Hurricane Raymond (1989)
Encyclopedia
Hurricane Raymond was the strongest 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...

 of the 1989 Pacific hurricane season
1989 Pacific hurricane season
-Tropical Storm Adolph:The first storm of the season developed out of a weak area of low pressure situated about 570 mi south-southwest of Acapulco, Mexico. Tracking towards the west, the circluation briefly dissipated on May 30, before redeveloping the following day into Tropical...

, peaking as a strong Category 4 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...

. Forming out of a tropical wave
Tropical wave
Tropical waves, easterly waves, or tropical easterly waves, also known as African easterly waves in the Atlantic region, are a type of atmospheric trough, an elongated area of relatively low air pressure, oriented north to south, which move from east to west across the tropics causing areas of...

 on September 25, the tropical depression slowly tracked northwest before becoming nearly stationary the next day. Shortly after, the depression intensified into Tropical Storm Raymond and took a general westward track. Gradually intensifying, Raymond attained hurricane-status on September 28 and attained its peak intensity on October 31, with winds of 145 mph (233.4 km/h) and a barometric pressure of 935 mbar (hPa; 27.61 inHg). Steady weakening then took place and by October 3, Raymond turned northeast towards land. The storm continued to weaken as it accelerated and eventually made landfall on the Baja California Peninsula as a tropical storm late on October 4 and a second landfall in Sonora
Sonora
Sonora officially Estado Libre y Soberano de Sonora is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided into 72 municipalities; the capital city is Hermosillo....

, Mexico. Shortly after, Raymond weakened to a depression as it tracked inland. The remnants of the system persisted until October 7 when it dissipated over the Central United States.

Due to the rapid motion of the storm, little impact was felt in Mexico. Moderate rain fell in association with Raymond, peaking at 4.72 in (119.9 mm) in Nogales
Nogales, Sonora
Heroica Nogales , more commonly known as Nogales, is a city and its surrounding municipality on the northern border of the Mexican State of Sonora. The municipality covers an area of 1,675 km², and borders to the north the city of Nogales, Arizona, United States, across the U.S.-Mexico border...

. There, flooding destroyed a bridge and nearby store, leaving $250,000 in damage. The remnants of Raymond produced more significant damage in the United States. Tucson, Arizona
Tucson, Arizona
Tucson is a city in and the county seat of Pima County, Arizona, United States. The city is located 118 miles southeast of Phoenix and 60 miles north of the U.S.-Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 1,020,200...

 recorded 4.5 in (114.3 mm) of rain from the storm, resulting in flash flooding that reached a depth of 2 ft (0.6096 m) in some places. In nearby Willcox
Willcox, Arizona
Willcox is a city in Cochise County, Arizona, United States. According to 2006 Census Bureau estimates, the population of the city is 3,769. Professional wrestler Ted Dibiase lived his formative years in Willcox, as did singer Tanya Tucker.-History:...

, flood waters inundated roughly 75% of the city. High winds from the storm also resulted in one fatality after a mobile home was destroyed. In all, damage throughout Arizona amounted to $1.5 million.

Meteorological history

Hurricane Raymond originated out of a tropical wave
Tropical wave
Tropical waves, easterly waves, or tropical easterly waves, also known as African easterly waves in the Atlantic region, are a type of atmospheric trough, an elongated area of relatively low air pressure, oriented north to south, which move from east to west across the tropics causing areas of...

 that also spawned Hurricane Hugo
Hurricane Hugo
Hurricane Hugo was a classical, destructive and rare Cape Verde-type hurricane which struck the Caribbean islands of Guadeloupe, Montserrat, St. Croix, Puerto Rico and the USA mainland in South Carolina as a Category 4 hurricane during September of the 1989 Atlantic hurricane season...

 in early-September. With little convective development
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...

, the wave tracked westward across the Atlantic Ocean
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

, entering the 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....

 several days later. By September 22, shower and thunderstorm activity increased as it crossed Central America
Central America
Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

 and entered the eastern Pacific basin
Pacific hurricane
A Pacific hurricane or tropical storm is a tropical cyclone that develops in the northeastern part of the Pacific Ocean. For organizational purposes, the northern Pacific Ocean is divided into three regions: the eastern, , central , and western...

. By September 24, the wave had become sufficiently organized for the Dvorak Technique
Dvorak technique
The Dvorak technique is a widely used system to subjectively estimate tropical cyclone intensity based solely on visible and infrared satellite images. Several agencies issue Dvorak intensity numbers for cyclones of sufficient intensity...

 to be implemented on the system. 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...

 (NHC) estimated that the wave spawned Tropical Depression Twenty One-E about 200 miles (321.9 km) south of Acapulco
Acapulco
Acapulco is a city, municipality and major sea port in the state of Guerrero on the Pacific coast of Mexico, southwest from Mexico City. Acapulco is located on a deep, semi-circular bay and has been a port since the early colonial period of Mexico’s history...

, Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

. Operationally, the NHC did not begin issuing advisories on the depression until September 26; at that time, the system's outflow
Outflow (meteorology)
Outflow, in meteorology, is air that flows outwards from a storm system. It is associated with ridging, or anticyclonic flow. In the low levels of the troposphere, outflow radiates from thunderstorms in the form of a wedge of rain-cooled air, which is visible as a thin rope-like cloud on weather...

 developed and the depression was nearly stationary as a mid-level low
Low pressure area
A low-pressure area, or "low", is a region where the atmospheric pressure at sea level is below that of surrounding locations. Low-pressure systems form under areas of wind divergence which occur in upper levels of the troposphere. The formation process of a low-pressure area is known as...

 over Mexico moved south. Shortly after, the depression was upgraded to a tropical storm and given the name Raymond by the NHC.

Raymond maintained a small area of deep convection around the center of circulation; however, outflow gradually became restricted due to the upper-level trough
Trough (meteorology)
A trough is an elongated region of relatively low atmospheric pressure, often associated with fronts.Unlike fronts, there is not a universal symbol for a trough on a weather chart. The weather charts in some countries or regions mark troughs by a line. In the United States, a trough may be marked...

 over Mexico. Southerly 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...

 around the storm began to increase late on September 27 in response to a cutoff low developing over southern Texas
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

 and northern Mexico; this led to a decrease in shower and thunderstorm activity with the system, preventing intensification. By this time, the storm had resumed a general westward track. The following day, the storm intensified into a hurricane, the ninth and final of the season, after an eye
Eye (cyclone)
The eye is a region of mostly calm weather found at the center of strong tropical cyclones. The eye of a storm is a roughly circular area and typically 30–65 km in diameter. It is surrounded by the eyewall, a ring of towering thunderstorms where the second most severe weather of a cyclone...

 developed. Throughout September 29, the eye became more defined on satellite imagery, indicating intensification. Later that day, Raymond strengthened into a Category 4 hurricane. Early on October 1, Raymond reached its peak intensity with winds of 145 mph (233.4 km/h) and a barometric pressure of 935 mbar (hPa; 27.61 inHg). Shortly after, the eye increased in size but became less symmetrical, indicating that the storm was beginning to weaken.

By October 2, convection surrounding the eye warmed and Raymond was downgraded to a Category 3 hurricane as it began to slow in a weak steering environment. Early the next day, the now Category 2 hurricane turned northeast and quickly accelerated in response to an approaching long-wave trough
Trough (meteorology)
A trough is an elongated region of relatively low atmospheric pressure, often associated with fronts.Unlike fronts, there is not a universal symbol for a trough on a weather chart. The weather charts in some countries or regions mark troughs by a line. In the United States, a trough may be marked...

. Later on October 3, the cyclone further weakened to a Category 1 storm as an eye was no longer present in the circulation. Increasing wind shear and decreasing water temperatures sped up the rate of weakening as Raymond approached the Baja California Peninsula
Baja California Peninsula
The Baja California peninsula , is a peninsula in northwestern Mexico. Its land mass separates the Pacific Ocean from the Gulf of California. The Peninsula extends from Mexicali, Baja California in the north to Cabo San Lucas, Baja California Sur in the south.The total area of the Baja California...

. Around 2300 UTC on October 4, the center of the storm made landfall in the municipality of Ensenada
Ensenada (municipality)
The municipality of Ensenada, with a land area of , takes up the majority of the state of Baja California. It is the largest in Mexico by area and the Americas. It contains all of Baja California apart from a strip at the north and, at the northeast extremity of the state, the municipality of...

 in Mexican state of Baja California
Baja California
Baja California officially Estado Libre y Soberano de Baja California is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is both the northernmost and westernmost state of Mexico. Before becoming a state in 1953, the area was known as the North...

 with winds of 50 mph (80.5 km/h). After briefly crossing the Gulf of California
Gulf of California
The Gulf of California is a body of water that separates the Baja California Peninsula from the Mexican mainland...

, the storm made its second and final landfall in the state of Sonora
Sonora
Sonora officially Estado Libre y Soberano de Sonora is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided into 72 municipalities; the capital city is Hermosillo....

 with winds of 40 mph (64.4 km/h). Shortly after moving inland, Raymond weakened to a tropical depression and quickly transitioned into an extratropical cyclone
Extratropical cyclone
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are a group of cyclones defined as synoptic scale low pressure weather systems that occur in the middle latitudes of the Earth having neither tropical nor polar characteristics, and are connected with fronts and...

 over Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

 in the Southwest United States. The upper-level remnants of the hurricane persisted until October 7 over the Midwest region.

Mexico

Around 0300 UTC on October 4, the Government of Mexico issued a tropical storm warning
Tropical cyclone warnings and watches
Warnings and watches are two levels of alert issued by national weather forecasting bodies to coastal areas threatened by the imminent approach of a tropical cyclone of tropical storm or hurricane intensity. They are notices to the local population and civil authorities to make appropriate...

 for areas between Punta Abreojos and San Carlos on the Pacific coast
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

 of Baja California
Baja California
Baja California officially Estado Libre y Soberano de Baja California is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is both the northernmost and westernmost state of Mexico. Before becoming a state in 1953, the area was known as the North...

 and for areas between Santa Rosalía
Santa Rosalía, Baja California Sur
Santa Rosalía is a city located on the Baja California peninsula, in the northern part of the Mexican state of Baja California Sur. It was named after Saint Rosalia, although the reason for the name is not quite clear since the Misión de Santa Rosalía is not located by the town, but rather in...

 to Loreto
Loreto, Baja California Sur
Loreto was the first Spanish settlement on the Baja California Peninsula. It served as the capital of Las Californias from 1697 to 1777, and is the current seat of the municipality of Loreto in the Mexican state of Baja California Sur...

 on the Gulf coast
Gulf of California
The Gulf of California is a body of water that separates the Baja California Peninsula from the Mexican mainland...

 of the Peninsula. Roughly twelve hours later, the warning was superseded by another tropical storm warning. The new warning was issued for areas between Punta Abreojos and El Rosario
El Rosario, Baja California
El Rosario is a small town on the west coast of the state of Baja California on Highway 1, 61 kmsouth of San Quintín and 119 km north of Cataviña. The census of 2010 reported a population of 1,704 inhabitants...

 on the Pacific coast and for areas between Santa Rosalia and Punta Final on the Gulf coast. In mainland Mexico, a tropical storm watch was issued for coastal areas of Sonora
Sonora
Sonora officially Estado Libre y Soberano de Sonora is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided into 72 municipalities; the capital city is Hermosillo....

 between Cabo Lobos and Puerto Penasco. By 1830 UTC, all of the watches and warnings were revised; on the Pacific coast of Baja California, the warning was in effect for areas between Punta Abreojos and San Juanico; on the Gulf coast, the warning was in effect for areas between Santa Rosalia and Punta Conception; the watch for coastal areas of Sonora was upgraded to a tropical storm warning for areas between Guaymas
Guaymas
Guaymas is a city and municipality located in the southwest part of the state of Sonora in northwestern Mexico. The city is located 117 km south of the state capital of Hermosillo, and 242 miles from the U.S. border, and is the principal port for the state. The municipality is located in the...

 and Cabo Lobos. Following Raymond's landfall in mainland Mexico, all warnings were discontinued by 1200 UTC on October 5.

Since Raymond had significantly weakened prior to its first landfall, only minor impacts were recorded in Mexico. The fast forward speed of the storm limited the amount of rain in the Baja California Peninsula
Baja California Peninsula
The Baja California peninsula , is a peninsula in northwestern Mexico. Its land mass separates the Pacific Ocean from the Gulf of California. The Peninsula extends from Mexicali, Baja California in the north to Cabo San Lucas, Baja California Sur in the south.The total area of the Baja California...

, with only a small area receiving more than 3 in (76.2 mm). The highest rainfall was recorded in Nogales at 4.72 in (119.9 mm). In the city, the swollen Santa Cruz River destroyed a heavily traveled bridge, known as the Calle Obregon, and a store which was situated on the banks of the river. Mexican officials estimated damages in Nogales at $250,000.

United States

The day prior to Raymond's impacts in the United States, weather forecasts in Arizona indicated that heavy rainfall associated with the remnants of the storm were likely to trigger flash flooding and landslides, with rainfall rates reaching 0.5 in/h (12.5 mm/h). Flash flood watch
Flash flood watch
A Flash flood watch is issued by the National Weather Service when conditions are favorable for flash flooding in flood-prone areas where grounds are already saturated from recent rains....

es were issued for parts of southern Arizona as well as mountainous and northern parts of New Mexico between October 5 and 6. Rainfall in excess of 3 in (76.2 mm) fell in parts of southern Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

; with the highest in the state recorded near Tucson
Tucson, Arizona
Tucson is a city in and the county seat of Pima County, Arizona, United States. The city is located 118 miles southeast of Phoenix and 60 miles north of the U.S.-Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 1,020,200...

 at 4.5 in (114.3 mm). Several locations recorded wind gusts up to 35 mph (56.3 km/h); however, mountaintops possibly received winds in excess of 40 mph (64.4 km/h). The highest total in the United States was recorded in Independence, Kansas
Independence, Kansas
Independence is a city in and the county seat of Montgomery County, Kansas, United States. As of the 2010 census, the city population was 9,483.-Geography:...

 at 3.91 in (99.3 mm).

Fifteen streets in the city of Tucson were closed as floodwaters reached 2 ft (0.6096 m) in the worst hit areas. The Tucson Electric Power Company reported that parts of the city were without power for eight hours on October 5 due to the storm. The hardest hit area was Willcox
Willcox, Arizona
Willcox is a city in Cochise County, Arizona, United States. According to 2006 Census Bureau estimates, the population of the city is 3,769. Professional wrestler Ted Dibiase lived his formative years in Willcox, as did singer Tanya Tucker.-History:...

; roughly 75% of the city was under 2 ft (0.6096 m) of floodwaters. Runoff, mixed with sewage, contaminated a wastewater-treatment plant; cleanup took several days before the plant was operational. Several businesses were flooded, with the Wilcox Auction Barn and the Wapco Apple Packing Plant both containing about 1 ft (0.3048 m) of water. The Sulphur Springs Valley
Sulphur Springs Valley
The Sulphur Springs Valley is a major valley in the eastern half of Cochise County, Arizona. The valley covers an approximated vertical rectangle west of the Chiricahua Mountains–Dos Cabezas Mountains complex; the Chiricahua's have a valley to the northeast, San Simon Valley, and to the southeast,...

 Electric Company shut off power to flooded areas as a safety precaution. In Fort Huachuca
Fort Huachuca
Fort Huachuca is a United States Army installation under the command of the United States Army Installation Management Command. It is located in Cochise County, in southeast Arizona, about north of the border with Mexico. Beginning in 1913, for 20 years the fort was the base for the "Buffalo...

, power lines were downed, leading to early dismissal of army classes. One person was killed in relation to Raymond after being trapped in a mobile home which was destroyed by high winds. Flash flooding triggered by Raymond caused an estimated $1.5 million in damage throughout Arizona.

See also


External links

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