Timeline of the 2010 Atlantic hurricane season
Encyclopedia
The 2010 Atlantic hurricane season
2010 Atlantic hurricane season
The 2010 Atlantic hurricane season was the third most active Atlantic hurricane season on record, tying with the 1887 Atlantic hurricane season, 1995 Atlantic hurricane season and the 2011 Atlantic hurricane season. It had the most number of named storms since the 2005 season and also ties with the...

 was a hyperactive year in which nineteen tropical storm
Tropical cyclone
A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor...

s formed, the most since 2005
2005 Atlantic hurricane season
The 2005 Atlantic hurricane season was the most active Atlantic hurricane season in recorded history, repeatedly shattering numerous records. The impact of the season was widespread and ruinous with an estimated 3,913 deaths and record damage of about $159.2 billion...

. Although Hurricane Alex formed on June 25, 2010, the season officially began on June 1 and ended on November 30. The seasons last storm, Hurricane Tomas
Hurricane Tomas
Hurricane Tomas was the nineteenth named storm and twelfth hurricane of the 2010 Atlantic hurricane season. Tomas developed from a tropical wave east of the Windward Islands on October 29. Quickly intensifying into a hurricane, it moved through the Windward Islands and passed very near Saint...

, dissipated on November 7.

The season had twenty-one tropical depression
Tropical cyclone
A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor...

s, of which nineteen intensified into tropical storms, twelve became hurricanes
Tropical cyclone
A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor...

, and five became major hurricanes. The high amount of activity throughout the basin was linked to the formation of La Niña
La Niña
La Niña is a coupled ocean-atmosphere phenomenon that is the counterpart of El Niño as part of the broader El Niño-Southern Oscillation climate pattern. During a period of La Niña, the sea surface temperature across the equatorial Eastern Central Pacific Ocean will be lower than normal by 3–5 °C...

, which decreases wind shear
Wind shear
Wind shear, sometimes referred to as windshear or wind gradient, is a difference in wind speed and direction over a relatively short distance in the atmosphere...

. The two most significant storms of the season, in terms of loss of life and damage, were Hurricanes Igor and Tomas. Hurricane Igor was a large Cape Verde-type hurricane
Cape Verde-type hurricane
A Cape Verde-type hurricane is an Atlantic hurricane that develops near the Cape Verde islands, off the west coast of Africa. The average hurricane season has about two Cape Verde-type hurricanes, which are usually the largest and most intense storms of the season because they often have plenty of...

 and was also the strongest storm of the season, reaching maximum sustained wind
Maximum sustained wind
The maximum sustained winds associated with a tropical cyclone are a common indicator of the intensity of the storm. Within a mature tropical cyclone, they are found within the eyewall at a distance defined as the radius of maximum wind, or RMW. Unlike gusts, the value of these winds are...

s of 155 mph (250 km/h). The storm was later retired, along with Tomas, in the spring of 2011, after causing unprecedented damage in Newfoundland
Newfoundland
Newfoundland usually refers to either:* Newfoundland, the former name of Newfoundland and Labrador, a Canadian province in the eastern part of Canada* Newfoundland , an island that forms part of the province of Newfoundland and Labrador...

. Tropical Storm Bonnie
Tropical Storm Bonnie (2010)
Tropical Storm Bonnie was a weak tropical storm that brought squally weather to the northern Caribbean Sea and Gulf Coast of the United States in July 2010. The third tropical cyclone and second named storm of the 2010 Atlantic hurricane season, Bonnie developed as a tropical depression from a...

 was the only tropical storm to make landfall
Landfall (meteorology)
Landfall is the event of a tropical cyclone or a waterspout coming onto land after being over water. When a waterspout makes landfall it is reclassified as a tornado, which can then cause damage inland...

 in the United States during the 2010 season.

This timeline includes information that was not operationally released, meaning that information from post-storm reviews by the National Hurricane Center
National Hurricane Center
The National Hurricane Center , located at Florida International University in Miami, Florida, is the division of the National Weather Service responsible for tracking and predicting weather systems within the tropics between the Prime Meridian and the 140th meridian west poleward to the 30th...

, such as a storm that was not operationally warned upon, has been included. This timeline documents tropical cyclone
Tropical cyclone
A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor...

 formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season.

June

June 1
  • 0400 UTC (12:00 a.m. AST) – The 2010 Atlantic hurricane season officially begins.

June 25
  • 1800 UTC (2:00 p.m. EDT) – Tropical Depression One develops from an area of low pressure approximately 80 mi (128.7 km) north-northeast of Puerto Lempira, Honduras
    Puerto Lempira
    Puerto Lempira is the capital of the Gracias a Dios department in northeastern Honduras, located on the shores of the Caratasca Lagoon. Though it does not have paved roads, it is the largest town in the La Mosquitia region....

    .

June 26
  • 0600 UTC (2:00 a.m. EDT) – Tropical Depression One strengthens into Tropical Storm Alex.
  • 0000 UTC June 27 (7:00 p.m. CDT June 26) – Tropical Storm Alex makes landfall near Belize City, Belize with maximum sustained winds
    Maximum sustained wind
    The maximum sustained winds associated with a tropical cyclone are a common indicator of the intensity of the storm. Within a mature tropical cyclone, they are found within the eyewall at a distance defined as the radius of maximum wind, or RMW. Unlike gusts, the value of these winds are...

     of 60 mph (95 km/h).

June 30
  • 0000 UTC (7:00 p.m. CDT June 29) – Tropical Storm Alex strengthens into a Category 1 hurricane on the Saffir-Simpson hurricane scale
    Saffir-Simpson Hurricane Scale
    The Saffir–Simpson Hurricane Scale , or the Saffir–Simpson Hurricane Wind Scale , classifies hurricanes — Western Hemisphere tropical cyclones that exceed the intensities of tropical depressions and tropical storms — into five categories distinguished by the intensities of their sustained winds...

    , the first of the season.


July

July 1
  • 0000 UTC (7:00 p.m. CDT June 30)– Hurricane Alex strengthens into a Category 2 hurricane.
  • 0200 UTC (9:00 p.m. CDT June 30)– Hurricane Alex attains its peak winds of 110 mph (177 km/h) and a minimum barometric pressure of 946 mbar (27.9 inHg); the storm concurrently makes landfall near Soto la Marina, Mexico at that intensity.
  • 0600 UTC (1:00 a.m. CDT)– Hurricane Alex weakens to a Category 1 hurricane.
  • 1200 UTC (7:00 a.m. CDT)– Hurricane Alex weakens to a tropical storm.

July 2
  • 0000 UTC (7:00 p.m. CDT July 1)– Tropical Storm Alex weakens to a tropical depression in the state of San Luis Potosi
    San Luis Potosí
    San Luis Potosí officially Estado Libre y Soberano de San Luis Potosí is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 58 municipalities and its capital city is San Luis Potosí....

    .
  • 0600 UTC (1:00 a.m. CDT)– Tropical Depression Alex degenerates into a non-convective
    Atmospheric convection
    Atmospheric convection is the result of a parcel-environment instability, or temperature difference, layer in the atmosphere. Different lapse rates within dry and moist air lead to instability. Mixing of air during the day which expands the height of the planetary boundary layer leads to...

     remnant low pressure area over the mountainous terrain of mainland Mexico.

July 8
  • 0000 UTC (7:00 p.m. CDT July 7) – Tropical Depression Two forms 290 mi (465 km) southeast of Brownsville, Texas
    Brownsville, Texas
    Brownsville is a city in the southernmost tip of the state of Texas, in the United States. It is located on the northern bank of the Rio Grande, directly north and across the border from Matamoros, Tamaulipas, Mexico. Brownsville is the 16th largest city in the state of Texas with a population of...

     and simultaneously attains its peak intensity with winds of 35 mph (55 km/h) and a minimum barometric pressure of 1005 mbar (hPa; 29.68 inHg).
  • 1400 UTC (9:00 a.m. CDT) – Tropical Depression Two makes landfall near the southern end of South Padre Island, Texas
    South Padre Island, Texas
    South Padre Island is a town in Cameron County, Texas, United States. It is part of the Brownsville–Harlingen Metropolitan Statistical Area. It may be included as part of the Brownsville–Harlingen–Raymondville and the Matamoros–Brownsville metropolitan areas. The population was 2,816 at the...

     with winds of 35 mph (55 km/h).

July 9
  • 0600 UTC (1:00 a.m. CDT) – Tropical Depression Two degenerates into a non-convective remnant low pressure area over northeastern Mexico.

July 22
  • 0600 UTC (1:00 a.m. EDT) - Tropical Depression Three developed in the vicinity of the Bahamas.
  • 2315 UTC (7:15 p.m. EDT) - Tropical Depression Three intensified into Tropical Storm Bonnie as it made landfall on Ragged Island, Bahamas with winds of 40 mph (65 km/h).


July 23
  • 0515 UTC (12:15 a.m. EDT) - Tropical Storm Bonnie made landfall on Andros Island, Bahamas
    Andros, Bahamas
    Andros Island is an archipelago within the archipelago-nation of the Bahamas, the largest of the 26 inhabited Bahamian Islands. Geo-politically considered a single island, Andros has an area greater than all the other 700 Bahamian islands combined...

     with winds of 45 mph (75 km/h).
  • 0600 UTC (1:00 a.m. EDT) - Tropical Storm Bonnie attained its peak intensity with winds of 45 mph (75 km/h) and a minimum barometric pressure of 1005 mbar (hPa; 29.68 inHg).
  • 1430 UTC (11:35 a.m. EDT) - Tropical Storm Bonnie made landfall near Elliott Key
    Elliott Key
    Elliott Key is the northernmost of the true Florida Keys , and the largest key north of Key Largo. It is located entirely within Biscayne National Park, in Miami-Dade County, Florida, east of Homestead, Florida...

    , Florida
    Florida
    Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

     with 45 mph (75 km/h) winds.
  • 1800 UTC (5:00 p.m. EDT) - Tropical Storm Bonnie weakens to a tropical depression over southwest Florida.

July 25
  • 0000 UTC (5:00 p.m. EDT) - Tropical Depression Bonnie dissipates over the northern Gulf of Mexico.

August

August 2
  • 1200 UTC (8:00 a.m. AST) – Tropical Depression Four forms 1275 mi (2,051.9 km) east of Barbados
    Barbados
    Barbados is an island country in the Lesser Antilles. It is in length and as much as in width, amounting to . It is situated in the western area of the North Atlantic and 100 kilometres east of the Windward Islands and the Caribbean Sea; therein, it is about east of the islands of Saint...

    .

August 3
  • 0600 UTC (2:00 a.m. AST) – Tropical Depression Four intensifies into Tropical Storm Colin
    Tropical Storm Colin (2010)
    Tropical Storm Colin was the fourth depression and third named storm of the 2010 Atlantic hurricane season. It was the first tropical cyclone to threaten Bermuda since Hurricane Bill a year earlier, although it dissipated before making landfall on the island....

     965 mi (1,553 km) east of the Leeward Islands
    Leeward Islands
    The Leeward Islands are a group of islands in the West Indies. They are the northern islands of the Lesser Antilles chain. As a group they start east of Puerto Rico and reach southward to Dominica. They are situated where the northeastern Caribbean Sea meets the western Atlantic Ocean...

    .
  • 1800 UTC (2:00 p.m. AST) – Tropical Storm Colin degenerates into a trough of low pressure.

August 5
  • 1200 UTC (8:00 a.m. AST) – The remnants of Colin regenerate into a tropical storm 320 mi (515 km) north-northeast of San Juan, Puerto Rico
    San Juan, Puerto Rico
    San Juan , officially Municipio de la Ciudad Capital San Juan Bautista , is the capital and most populous municipality in Puerto Rico, an unincorporated territory of the United States. As of the 2010 census, it had a population of 395,326 making it the 46th-largest city under the jurisdiction of...

    .
  • 2100 UTC (4:00 p.m. AST) – Tropical Storm Colin attained its peak intensity with winds of 60 mph (95 km/h) and a minimum pressure of 1005 mbar (hPa; 29.68 inHg).

August 8
  • 0000 UTC (8:00 p.m. AST August 7) – Tropical Storm Colin weakens to a tropical depression 195 mi (313.8 km) south-southwest of Bermuda
    Bermuda
    Bermuda is a British overseas territory in the North Atlantic Ocean. Located off the east coast of the United States, its nearest landmass is Cape Hatteras, North Carolina, about to the west-northwest. It is about south of Halifax, Nova Scotia, Canada, and northeast of Miami, Florida...

    .
  • 1200 UTC (8:00 a.m. EDT)  – Tropical Depression Colin dissipates less than 115 mi (185.1 km) southwest of Bermuda.

August 10
  • 1800 UTC (2:00 p.m. EDT) – Tropical Depression Five develops in the southeastern Gulf of Mexico.


August 11
  • 0000 UTC (12:00 a.m. EDT August 10) - Tropical Depression Five attained its peak intensity with winds of 35 mph (55 km/h) and a minimum pressure of 1008 mbar (hPa; 29.77 inHg).
  • 0600 UTC (2:00 a.m. EDT) – Tropical Depression Five dissipates in the northern Gulf of Mexico.

August 21
  • 1800 UTC (2:00 p.m. AST) – Tropical Depression Six developed near Cape Verde
    Cape Verde
    The Republic of Cape Verde is an island country, spanning an archipelago of 10 islands located in the central Atlantic Ocean, 570 kilometres off the coast of Western Africa...

    .

August 22
  • 0600 UTC (2:00 a.m. AST) – Tropical Depression Six strengthens into Tropical Storm Danielle.

August 23
  • 1800 UTC (2:00 p.m. AST) – Tropical Storm Danielle strengthens into a Category 1 hurricane.

August 25
  • 1200 UTC (8:00 a.m. AST) – Tropical Depression Seven forms southwest of Cape Verde.
  • 2100 UTC (5:00 p.m. AST) – Tropical Depression Seven strengthens into Tropical Storm Earl.

August 26
  • 0600 UTC (2:00 a.m. AST) – Hurricane Danielle strengthens into a Category 2 hurricane.

August 27
  • 0600 UTC (2:00 a.m. AST)  - Hurricane Danielle strengthens into a Category 3 hurricane, the first major hurricane of the season.
  • 1800 UTC (2:00 p.m. AST)  - Hurricane Danielle strengthens into a Category 4 hurricane. Simultaneously, Hurricane Danielle attained its peak intensity with winds of 135 mph (215 km/h) and a minimum barometric pressure of 942 mbar (hPa; 27.82 inHg).


August 28
  • 0000 UTC (8:00 p.m. AST August 27) – Hurricane Danielle weakens to a Category 3 hurricane.
  • 0600 UTC (2:00 a.m. AST) – Hurricane Danielle weakens to a Category 2 hurricane.

August 29
  • 0600 UTC (2:00 a.m. AST) – Hurricane Danielle weakens to a Category 1 hurricane.
  • 1230 UTC (8:30 a.m. AST) – Tropical Storm Earl strengthens into a Category 1 hurricane.

August 30
  • 0300 UTC (11:00 p.m. AST August 28) – Hurricane Earl
    Hurricane Earl (2010)
    Hurricane Earl was a long-lived, powerful tropical cyclone which became the first major hurricane to threaten New England since Hurricane Bob in 1991. The fifth named storm of the 2010 season, Earl developed out of a tropical wave roughly west of the Cape Verde Islands on August 25...

     strengthens into a category 2 hurricane.
  • 1200 UTC (5:00 p.m. AST) – Tropical Depression Fiona (operationally considered a tropical storm at this time) developed 1035 miles (1665 km) east of the Leeward Islands.
  • 1500 UTC (11:00 a.m. AST) – Hurricane Earl strengthens into a category 3 hurricane.
  • 1800 UTC (2:00 p.m. AST) – Tropical Depression Fiona strengthens to Tropical Storm Fiona
    Tropical Storm Fiona (2010)
    Tropical Storm Fiona was the eighth tropical depression and sixth tropical storm in the 2010 Atlantic hurricane season. A weak and disorganized storm, it originated from a tropical wave that moved into the Atlantic Ocean late on August 25. After struggling to develop, it became a tropical storm on...

    .
  • 1800 UTC (2:00 p.m. AST) – Hurricane Danielle weakened back to a tropical storm.
  • 2100 UTC (5:00 p.m. AST) - Hurricane Earl strengthens into a category 4 hurricane.

August 31
  • 0000 UTC (8:00 p.m. AST August 30) – Tropical Storm Danielle becomes extratropical 475 mi (770  km) southeast of Cape Race
    Cape Race
    Cape Race is a point of land located at the southeastern tip of the Avalon Peninsula on the island of Newfoundland, Canada. Its name is thought to come from the original Portuguese name for this cape, "Raso", or "bare"...

    , Newfoundland
    Newfoundland and Labrador
    Newfoundland and Labrador is the easternmost province of Canada. Situated in the country's Atlantic region, it incorporates the island of Newfoundland and mainland Labrador with a combined area of . As of April 2011, the province's estimated population is 508,400...

    , Canada
    Canada
    Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

    .

September

September 1
  • 0600 UTC (2:00 a.m. AST) - Tropical Depression Nine developed to the southwest of Cape Verde
    Cape Verde
    The Republic of Cape Verde is an island country, spanning an archipelago of 10 islands located in the central Atlantic Ocean, 570 kilometres off the coast of Western Africa...

    .
  • 1200 UTC (8:00 a.m. AST) – Tropical Storm Fiona attains its minimum pressure of 997 mbar (hPa; 29.44 inHg).
  • 1200 UTC (8:00 a.m. AST) - Tropical Depression Nine intensified into Tropical Storm Gaston. Simultaneously, Tropical Storm Gaston attained its peak intensity with maximum sustained winds of 40 mph (65 km/h) and a minimum pressure of 1005 mbar (hPa; 29.68 inHg).
  • 1800 UTC (2:00 p.m. AST) – Tropical Storm Fiona attains its peak winds of 65 mph (100 km/h).

  • 2100 UTC (5:00 p.m. EDT) – Hurricane Earl re-strengthens into a category 4 hurricane.

September 2
  • 0000 UTC (8:00 p.m. AST September 1) – Tropical Storm Gaston weakens to a tropical depression.
  • 1200 UTC (8:00 a.m. AST) – Tropical Depression Gaston degenerated into a remnant low.

September 3
  • 0000 UTC (8:00 p.m. EDT September 2) – Hurricane Earl weakens into a category 2 hurricane.
  • 1500 UTC (11:00 a.m. EDT) – Hurricane Earl weakens into a category 1 hurricane.

September 4
  • 0000 UTC (8:00 p.m. EDT September 3) – Tropical Storm Fiona weakens into a tropical depression.
  • 0300 UTC (11:00 p.m. EDT September 3) – Hurricane Earl weakens into a tropical storm.
  • 0300 UTC (11:00 p.m. EDT September 3) – Tropical Depression Fiona weakens into a remnant low southwest of Bermuda
    Bermuda
    Bermuda is a British overseas territory in the North Atlantic Ocean. Located off the east coast of the United States, its nearest landmass is Cape Hatteras, North Carolina, about to the west-northwest. It is about south of Halifax, Nova Scotia, Canada, and northeast of Miami, Florida...

    .
  • 1400 UTC (10:00 a.m. EDT) – Tropical Storm Earl makes landfall near Western Head, Nova Scotia
    Western Head, Nova Scotia
    Western Head is a community in the Canadian province of Nova Scotia, located in the Region of Queens Municipality . The Meteorological Service of Canada maintains a weather station in Western Head ID: CWWE....

     with 70 mph (110 km/h) winds.

September 5
  • 0300 UTC (11:00 p.m. EDT September 4) – Tropical Storm Earl becomes extratropical over the Gulf of Saint Lawrence
    Gulf of Saint Lawrence
    The Gulf of Saint Lawrence , the world's largest estuary, is the outlet of North America's Great Lakes via the Saint Lawrence River into the Atlantic Ocean...

    .
  • 1800 UTC (1:00 p.m. CDT) - Tropical Depression Ten developed in the western Gulf of Mexico.

September 6
  • 0600 UTC (1:00 a.m. CDT) – Tropical Depression Ten intensified into into Tropical Storm Hermine
    Tropical Storm Hermine (2010)
    Tropical Storm Hermine , was a rare basin-crossing tropical cyclone that caused widespread damage from Guatemala to Oklahoma in early September 2010. The system was first classified as Tropical Depression Eleven-E on September 3 in the Gulf of Tehuantepec...

    .

September 7
  • 0200 UTC (10:00 p.m. CDT September 6) – Tropical Storm Hermine attained its peak intensity with maximum sustained winds of 70 mph (110 km/h) and a minimum barometric pressure of 989 mbar (hPa; 29.21 inHg). Simultaneously, Tropical Storm Hermine made landfall near Matamoros, Tamaulipas
    Matamoros, Tamaulipas
    Matamoros, officially known as Heroica Matamoros, is a city in the northeastern part of Tamaulipas, in the country of Mexico. It is located on the southern bank of the Rio Grande, directly across the border from Brownsville, Texas, in the United States. Matamoros is the second largest and second...

    , Mexico at the same intensity.

September 8
  • 0000 UTC (7:00 p.m. CDT) – Tropical Storm Hermine weakened back into a tropical depression.
  • 1500 UTC (11:00 a.m. EDT) – Tropical Storm Igor forms south of the Cape Verde Islands.

September 9
  • 1800 UTC (1:00 p.m. CDT) - Tropical Depression Hermine degenerated into a remnant low over northern Oklahoma
    Oklahoma
    Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...

    .
  • 2100 UTC (5:00 p.m. EDT) – Tropical Storm Igor weakens into a tropical depression.

September 10
  • 1500 UTC (11:00 a.m. EDT) – Tropical Depression Igor restrengthens into a tropical storm.

September 11
  • 0300 UTC (11:00 p.m. EDT) – Tropical Storm Igor strengthens into a category 1 hurricane.

September 12
  • 0600 UTC (2:00 a.m. EDT) – Tropical Depression Twelve forms to the southeast of the Cape Verde Islands.
  • 1500 UTC (11:00 a.m. EDT) – Hurricane Igor
    Hurricane Igor (2010)
    Hurricane Igor was the most destructive tropical cyclone to strike the Canadian island of Newfoundland on record. The origins of Igor were within a broad area of low pressure that moved off the west coast of Africa on September 6, 2010. Tracking slowly westward, it developed into a tropical...

     strengthens to a category 2.
  • 1800 UTC (2:00 p.m. EDT) – Tropical Depression Twelve strengthens into a tropical storm and was named Julia.
  • 1830 UTC (2:30 p.m. EDT) – Hurricane Igor rapidly intensifies into a category 4 hurricane, skipping category 3.


September 13
  • 2100 UTC (5:00 p.m. EDT) – Tropical Storm Karl formed in the western Caribbean Sea
    Caribbean Sea
    The Caribbean Sea is a sea of the Atlantic Ocean located in the tropics of the Western hemisphere. It is bounded by Mexico and Central America to the west and southwest, to the north by the Greater Antilles, and to the east by the Lesser Antilles....

    .

September 14
  • 1200 UTC (8:00 a.m. AST) – Tropical Storm Julia strengthens into a category 1 hurricane.

September 15
  • 0000 UTC (11:00 p.m. AST September 14) – Hurricane Julia strengthens into a category 2 hurricane.
  • 0600 UTC (12:00 a.m. AST) – Hurricane Julia strengthens into a category 3 hurricane.
  • 1200 UTC (8:00 a.m. AST) – Hurricane Julia strengthens into a category 4 hurricane. Simultaneously, Hurricane Julia attained its peak intensity with winds of 140 mph (220 km/h) and a minimum pressure of 948 mbar (hPa; 27.99 inHg).
  • 1245 UTC (7:45 a.m. CDT) – Tropical Storm Karl makes landfall north of Chetumal
    Chetumal
    Chetumal is a city on the east coast of the Yucatán Peninsula in Mexico. It is the capital of the state of Quintana Roo and the municipal seat of the Municipality of Othón P. Blanco...

    , Quintana Roo
    Quintana Roo
    Quintana Roo officially Estado Libre y Soberano de Quintana Roo is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 10 municipalities and its capital city is Chetumal....

    , with 65 mph (100 km/h) winds.

September 16
  • 0000 UTC (8:00 p.m. AST September 15) – Hurricane Julia weakens to a category 3 hurricane.
  • 1200 UTC (8:00 a.m. AST) – Hurricane Julia weakens to a category 2 hurricane.
  • 1500 UTC (10:00 a.m. CDT) – Tropical Storm Karl strengthens into a Category 1 hurricane.
  • 1800 UTC (2:00 p.m. AST) – Hurricane Julia weakens to a category 1 hurricane.
  • 2100 UTC (5:00 p.m. AST) – Hurricane Igor weakens to a category 3 hurricane.

September 17
  • 0300 UTC (10:00 p.m. CDT September 16) – Hurricane Karl strengthens into a category 2 hurricane.
  • 0900 UTC (04:00 a.m. CDT) – Hurricane Karl strengthens into a category 3 hurricane.
  • 1630 UTC (11:30 a.m. CDT) – Hurricane Karl makes landfall 10 miles (20 km) north of Veracruz, Mexico
    Veracruz, Mexico
    Veracruz, Mexico, may refer to:*The state of Veracruz, one of the 32 component federal entities of the United Mexican States*Veracruz, Veracruz, a major seaport and largest city in that state...

    , with 115 mph (185 km/h) winds.
  • 1800 UTC (1:00 p.m. CDT) – Hurricane Karl weakens to a category 2 hurricane.
  • 2100 UTC (4:00 p.m. CDT) – Hurricane Karl weakens to a category 1 hurricane.
  • 2100 UTC (5:00 p.m. AST) – Hurricane Igor weakens to a category 2 hurricane.

September 18
  • 0000 UTC (7:00 p.m. CDT September 17) – Hurricane Karl weakens to a tropical storm.
  • 0000 UTC (11:00 p.m. AST September 17) – Hurricane Julia weakens to a tropical storm.
  • 0300 UTC (10:00 p.m. CDT September 17) – Tropical Storm Karl weakens to a tropical depression.
  • 0900 UTC (4:00 a.m. CDT) – Tropical Depression Karl dissipates in southern Mexico.

September 19
  • 0600 UTC (2:00 a.m. AST) – Hurricane Igor weakens to a category 1 hurricane.

September 20
  • 1800 UTC (2:00 p.m. AST) – Tropical Storm Julia transitioned into an extratropical storm.
  • 0300 UTC (11:00 p.m. AST) – Tropical Depression Fourteen formed 530 mi (850 km) west of Cape Verde.

September 21
  • 1200 UTC (8:00 a.m. AST) – Tropical Depression Fourteen strengthens into Tropical Storm Lisa.
  • 2100 UTC (5:00 p.m. AST) – Hurricane Igor became extratropical east of Newfoundland and Labrador
    Newfoundland and Labrador
    Newfoundland and Labrador is the easternmost province of Canada. Situated in the country's Atlantic region, it incorporates the island of Newfoundland and mainland Labrador with a combined area of . As of April 2011, the province's estimated population is 508,400...

    .

September 22
  • 1800 UTC (2:00 p.m. AST) - Tropical Storm Lisa weakened back to a tropical depression.

September 23
  • 0900 UTC (5:00 a.m. AST) – Tropical Storm Lisa weakens to a tropical depression.
  • 1200 UTC (8:00 a.m. AST) - Tropical Depression Lisa re-intensified into a tropical storm.
  • 1800 UTC (2:00 p.m. EST) – Tropical Depression Fifteen forms in the south-central Caribbean Sea.
  • 2100 UTC (5:00 p.m. EST) – Tropical Depression Fifteen strengthens into Tropical Storm Matthew
    Tropical Storm Matthew (2010)
    Tropical Storm Matthew was the fourth tropical cyclone to make landfall in Central America during the 2010 Atlantic hurricane season. Matthew, despite being a tropical storm, proved to be destructive. The fifteenth tropical cyclone and thirteenth named storm of the year, Matthew formed on...

    .

September 24
  • 2100 UTC (5:00 p.m. EDT) – Tropical Storm Matthew made landfall near Krukira, Nicaragua with winds of 50 mph (85 km/h).
  • 2100 UTC (5:00 p.m. AST) – Tropical Storm Lisa intensified into a category 1 hurricane.


September 25
  • 0000 UTC (8:00 p.m. AST) - Hurricane Lisa attained its peak intensity with maximum sustained winds of 85 mph (140 km/h) and a minimum pressure of 982 mbar (hPa; 29 inHg).
  • 1200 UTC (8:00 a.m. AST) – Hurricane Lisa weakens back into a tropical storm.
  • 1800 UTC (2:00 p.m. EDT) – Tropical Storm Matthew weakens back into a tropical depression.

September 26
  • 1200 UTC (8:00 a.m. AST) – Tropical Storm Lisa weakens back into a tropical depression.
  • 1500 UTC (11:00 a.m. EDT) – Tropical Depression Matthew dissipates over the Isthmus of Tehuantepec
    Isthmus of Tehuantepec
    The Isthmus of Tehuantepec is an isthmus in Mexico. It represents the shortest distance between the Gulf of Mexico and the Pacific Ocean, and prior to the opening of the Panama Canal was a major shipping route known simply as the Tehuantepec Route...

     in Mexico.
  • 1800 UTC (2:00 p.m. AST) – Tropical Depression Lisa degenerates into a remnant low.

September 28
  • 1500 UTC (11:00 a.m. EDT) – Tropical Depression Sixteen forms in the northwest Caribbean Sea.

September 29
  • 1500 UTC (11:00 a.m. EDT) – Tropical Depression Sixteen strengthens into Tropical Storm Nicole
    Tropical Storm Nicole (2010)
    Tropical Storm Nicole was a short-lived and asymmetric tropical cyclone that caused extensive damage in Jamaica during the 2010 Atlantic hurricane season. It was the sixteenth tropical cyclone and fourteenth named storm of the season, as well as the last of a record eight tropical storms to form in...

    .
  • 2100 UTC (5:00 p.m. EDT) – Tropical Storm Nicole dissipates over the Straits of Florida.

October

October 6
  • 0600 UTC (5:00 a.m. AST) – Subtropical Depression Seventeen develops north-northwest of Puerto Rico
    Puerto Rico
    Puerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...

    .
  • 1200 UTC (5:00 p.m. AST) – Subtropical Depression Seventeen intensified into Subtropical Storm Otto.


October 7
  • 1200 UTC (11:00 a.m. AST) – Subtropical Storm Otto transitioned into a fully tropical cyclone, reclassified as Tropical Storm Otto.

October 8
  • 1200 UTC (11:00 a.m. AST) – Tropical Storm Otto strengthens into a category 1 hurricane.

October 9
  • 0000 UTC (8:00 p.m. AST October 8) - Hurricane Otto attained its peak intensity with maximum sustained winds of 85 mph (140 km/h) and a minimum barometric pressure 976 mbar (hPa; 28.82 inHg).

October 10
  • 0000 UTC (8:00 p.m. AST October 9) – Hurricane Otto weakened back to a tropical storm.
  • 0600 UTC (2:00 a.m. AST) – Tropical Storm Otto transitions into an extratropical storm several hundred miles west of the Azores
    Azores
    The Archipelago of the Azores is composed of nine volcanic islands situated in the middle of the North Atlantic Ocean, and is located about west from Lisbon and about east from the east coast of North America. The islands, and their economic exclusion zone, form the Autonomous Region of the...

    .

October 11
  • 2100 UTC (5:00 p.m. EDT) – Tropical Storm Paula develops and makes landfall on the Honduran northern coast [ web|url=http://www.nhc.noaa.gov/archive/2010/al18/al182010.public.001.shtml?|title=Tropical Storm Paula Advisory Number 1|last=Brennan|date=October 11, 2010|publisher=National Hurricane Center|accessdate=October 12, 2010}}


October 12
  • 0900 UTC (5:00 a.m. EDT) – Tropical Storm Paula strengthens into a category 1 hurricane.
  • 1745 UTC (12:45 p.m. CDT) – Hurricane Paula
    Hurricane Paula (2010)
    Hurricane Paula was a small but strong hurricane that impacted several areas surrounding the western Caribbean Sea. The sixteenth named storm of the 2010 Atlantic hurricane season, Paula developed from an area of low pressure over the southwestern Caribbean in early October 2010...

     strengthens into a category 2 hurricane.

October 13
  • 2100 UTC (4:00 p.m. CDT) – Hurricane Paula weakens back to a category 1 hurricane.

October 14
  • 1500 UTC (11:00 a.m. EDT) – Hurricane Paula weakens back into a tropical storm.


October 15
  • 0900 UTC (5:00 a.m. EDT) – Tropical Storm Paula weakened back into a tropical depression over north-central Cuba.
  • 1500 UTC (11:00 a.m. EDT) – Tropical Depression Paula degenerates into a remnant low while emerging into the Straits of Florida.

October 21
  • 0300 UTC (11:00 p.m. EDT October 20) – Tropical Depression Nineteen forms in the northwest Caribbean Sea.
  • 1500 UTC (11:00 a.m. EDT) – Tropical Depression Nineteen strengthens into Tropical Storm Richard.

October 24
  • 1500 UTC (10:00 a.m. CDT) – Tropical Storm Richard strengthens into a category 1 hurricane.

October 25
  • 0045 UTC (7:45 p.m. CDT October 24) – Hurricane Richard makes landfall 20 mi (35 km) south of Belize City
    Belize City
    Belize City is the largest city in the Central American nation of Belize. Unofficial estimates place the population of Belize City at 70,000 or more. It is located at the mouth of the Belize River on the coast of the Caribbean. The city is the country's principal port and its financial and...

    , Belize with winds of 100 mph (160.9 km/h).
  • 0900 UTC (4:00 a.m. CDT) – Hurricane Richard weakens back to a tropical storm.
  • 1500 UTC (10:00 a.m. CDT) – Tropical Storm Richard weakens to a tropical depression.

October 26
  • 1500 UTC (10:00 a.m. CDT) – Tropical Depression Richard degenerates into a remnant low in the southern Gulf of Mexico.

October 29
  • 0300 UTC (11:00 p.m. AST October 28) – Tropical Storm Shary develops 350 mi (565 km) south of Bermuda.
  • 2100 UTC (5:00 p.m. AST) – Tropical Storm Tomas develops to the east of the Windward Islands.


October 30
  • 0900 UTC (5:00 a.m. EDT) – Tropical Storm Shary intensifies into a Category 1 hurricane.
  • 1500 UTC (11:00 a.m. EDT) – Tropical Storm Tomas intensifies into a Category 1 hurricane.
  • 2100 UTC (5:00 p.m. AST) – Hurricane Shary transitions into an extratropical cyclone as it weakened back to a tropical storm.

October 31
  • 0600 UTC (2:00 a.m. AST) – Hurricane Tomas intensifies into a Category 2 hurricane.
  • 1500 UTC (11:00 a.m. AST) – Hurricane Tomas weakens to a Category 1 hurricane.

November

November 1
  • 0300 UTC (11:00 p.m. AST) – Hurricane Tomas weakened back to a tropical storm over the east-central Caribbean Sea.


November 3
  • 0900 UTC (5:00 am AST) – Tropical Storm Tomas weakens to a tropical depression over the central Caribbean Sea.
  • 2100 UTC (5:00 p.m. AST) – Tropical Depression Tomas re-intensifies into a tropical storm.

November 5
  • 0900 UTC (5:00 a.m. EDT) – Tropical Storm Tomas re-intensifies to a hurricane.

November 6
  • 0900 UTC (5:00 a.m. EDT) – Hurricane Tomas weakens to a tropical storm.

November 7
  • 0000 UTC (8:00 p.m. EDT November 6) – Tropical Storm Tomas re-intensifies to a hurricane.
  • 1500 UTC (11:00 a.m. AST) – Hurricane Tomas weakens to a tropical storm.
  • 2100 UTC (5:00 p.m. AST) – Tropical Storm Tomas becomes extratropical.

November 30
  • 0359 UTC (11:59 p.m. AST) – The 2010 Atlantic hurricane season officially ended.

See also

  • List of Atlantic hurricanes
  • Timeline of the 2010 Pacific hurricane season
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