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Incline Club [1999 Season Newsletter Index] inclineclub.com | Medical Services Institute - 1999 Hurricane Resources wemsi.org | - Essential Safety - Winter 1999... atlanticinstitute.com | Hurricane Season medical needs ocalaregional.com |
The 1999 Atlantic hurricane season officially began on June 1, 1999, and lasted until November 30, 1999. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. The 1999 season set a record by having five storms reach Category 4 strength, which was later tied by the 2005 season. Hurricane Floyd was the deadliest United States hurricane since Hurricane Agnes in 1972, killing 57 people and causing billions in damage as it moved northward along the Atlantic coast. Hurricane Lenny killed 17 as it tracked eastward across the Caribbean, the first hurricane known to do so for an extended time. Lenny, reaching peak winds of 155 mph (249 km/h) just 13 days before the end of the season, was the strongest Atlantic hurricane in the month of November. The deadliest storm of the season by far, however, was a weak tropical depression in October that caused devastating floods in Mexico. [edit] Storms[edit] Tropical Storm Arlene
Main article: Tropical Storm Arlene (1999) A mid- to upper-level low developed along the tail end of a diffuse front in the central Atlantic Ocean in early June. While moving northward, it generated convection, and developed a small low-level circulation. Based on increased outflow and organization, it was classified as Tropical Depression One on June 11, and under generally favorable conditions it strengthened into Tropical Storm Arlene on the 12th while several hundred miles southeast of Bermuda. The storm moved roughly northwestward, reaching peak winds of 60 mph (97 km/h) before coming within 115 miles (185 km) of Bermuda on the 17th. It turned north and away from the island where upper level shear caused Arlene to dissipate on June 18. No damages were reported. Arlene was only notable because it developed in the deep tropics in the Atlantic in June, the first such storm since 1979's Ana.[1] [edit] Tropical Depression Two
The season's second tropical cyclone developed out of a tropical wave that moved off the west coast of Africa on June 20. The wave tracked generally toward the west, through the Atlantic and into the Caribbean Sea. By June 30, cyclonic turning was noted as the system reached the western Caribbean. On July 2, a weak surface circulation was found as the system entered the Bay of Campeche. Later that day, the low had become sufficiently organized to be declared Tropical Depression Two.[2] The depression quickly reached its peak intensity with winds of 35 mph (55 km/h) and a minimum pressure of 1004 mbar (hPa). Upon attaining this intensity, the system made landfall near Tecolutla, Mexico, early on July 3. Several hours later, the National Hurricane Center stopped monitoring the system as it dissipated over land.[2] The remnants of the system were monitored by the Mexico National Weather Service until July 5, at which time it entered the Pacific Ocean.[3] The system dropped heavy rain on the area amounting to a maximum of 20.37 in (517 mm) at Tanzabaca, Mexico.[4] Roughly 14.6 in (370 mm) of this fell in a 24-hour span.[3] Despite the heavy rainfall, no damage was reported in relation to Tropical Depression Two.[2] [edit] Hurricane Bret
Main article: Hurricane Bret (1999) A tropical depression that formed in the Bay of Campeche on August 18 reached tropical storm strength late on August 19. Bret moved north, and strengthened into a145 mph (233 km/h) Category 4 hurricane on August 22. As it approached Texas, Bret turned to the northwest, and made landfall as a Category 3 hurricane at Padre Island on August 23, becoming the first major hurricane to hit Texas since Hurricane Alicia in 1983. The storm continued inland and dissipated over northern Mexico on August 25. Damage is estimated at $60 million, which is rather low for a hurricane of this intensity. Hurricane Bret made landfall in the sparsely populated Kenedy County, Texas, missing Brownsville, Texas, to its south and Corpus Christi, Texas, to its north. The hurricane dissipated quickly after its last advisory for the city of Laredo, Texas.[5] Along the Texas coastline, Bret threatened several cities, resulting in the evacuation of 180,000 residents. Numerous shelters were opened throughout the region and prisons were evacuated. In nearby Mexico, roughly 7,000 people evacuated the coastline ahead of the storm. Bret made landfall in a sparsely populated region, resulting in relatively little damage in comparison to its intensity. Nevertheless, seven people were killed by the storm, four in Texas and three in Mexico. Most of the deaths were due to car accidents caused by slick roads. In all, the storm caused $15 million (1999 USD; $19.7 million 2009 USD) in damages.[5] [edit] Hurricane Cindy
Main article: Hurricane Cindy (1999) A tropical wave moved off the coast of Africa on August 18, and quickly developed into Tropical Depression Four on the 19th while around 300 miles (480 km) east-southeast of the Cape Verde Islands. Persistent westerly shear initially inhibited development, but a decrease in the shear allowed the depression to strengthen into a tropical storm on the 20th. Cindy quickly attained hurricane status, and weakened back to a tropical storm due to an increase in the shear. The unfavorable conditions abated, and Cindy quickly strengthened into a 140 mph (230 km/h) Category 4 hurricane while 430 miles (690 km) east-southeast of Bermuda. Shear increased as Cindy turned to the northeast, and the storm dissipated on August 31 as it merged with an extratropical cyclone about 1,000 miles (1,600 km) west of the Azores.[6] [edit] Hurricane Dennis
Main article: Hurricane Dennis (1999) Dennis was traced to a tropical wave moving off the African coast on August 17. The wave continued west-northwestward until it gained tropical depression status on August 23 and then a tropical storm on the same day. Located at the eastern end of an elongated trough, Dennis was affected by westerly shear. Despite the unfavorable conditions, the storm intensified, and reached hurricane status on August 26 over the Bahamas. Due a trough, Dennis moved very erratically. After passing through the Bahamas, the shear decreased, and Dennis was able to reach Category 2 strength on the 28th. A trough brought Dennis north and northeastward, causing it to parallel the Florida through North Carolina coastlines. While east of Florida Dennis reached its peaked as a Category 2 hurricane, though the wind field never resembled a classical tightly wound hurricane. The eyewall was around 35 miles wide at its height. Dennis weakened as it continued northeastward, but still brought hurricane force winds to the North Carolina coast on August 30. Hurricane Dennis eventually became involved with a cold front, causing vertical shear and cool, dry air to impact the circulation. A ridge of high pressure to its north caused Dennis to stall, leading the cyclone to weaken to a tropical storm on September 1 over the unfavorable conditions. Dennis soon strengthened again as it turned to the west-northwest, and made landfall near Harkers Island, North Carolina, on September 5 just below hurricane strength. The storm rapidly weakened over land, and turned northward through Virginia. It became extratropical on September 7, and was absorbed by a larger extratropical on the 8th over Canada. In all the storm was responsible for producing hurricane-force winds along the North Carolina coast along with beach erosion. The hurricane caused $157 million in damage, and killed 4 people. The heavy rains from Dennis also set the stage for destructive flooding from Hurricane Floyd about two weeks later.[7] [edit] Tropical Storm Emily
Emily formed on August 24 from the same cluster of tropical waves that spawned Hurricanes Cindy and Dennis. The storm moved roughly north until the 28th when it was absorbed by Hurricane Cindy. Emily never directly affected land and there is no damage reported in association with it.[8] [edit] Tropical Depression Seven
Tropical Depression Seven began from a tropical wave in the western Gulf of Mexico on September 5. It became better organized as it moved north-northwestward, and hit the town of La Pesca, Tamaulipas, on the 6th before intensifying further. The storm caused heavy rainfall, though damage and death totals are unknown. In Texas, its remnants produced light rainfall, peaking at 3.35 in (85 mm) in Harlingen, Texas.[9] [edit] Hurricane Floyd
Main article: Hurricane Floyd Hurricane Floyd was a large and powerful Cape Verde-type hurricane that was first named on September 8 while about 750 n mi east of the Leeward Islands. Floyd slowly intensified and headed west-northwest, staying well north of the Lesser Antilles. On September 11, Floyd turned and began moving almost due west and began to strengthen. On the 13th, Floyd was a strong Category 4 hurricane with winds of 155 mph (249 km/h), just short of reaching Category 5.[10] At this point, Hurricane Floyd was just east of the Bahamas. Floyd weakened slightly as it moved into the islands, striking Eleuthera Island and later making landfall on Abaco Island on the 14th while at the low end of the Category 4 range. Floyd turned north and paralleled the coast of Florida until making landfall near Cape Fear as a Category 2 storm on September 16. It returned to the ocean near Norfolk, Virginia and traveled up the coasts of the Delmarva Peninsula and New Jersey as a tropical storm. It passed over Long Island and into New England.[10] Floyd caused record rainfall across the east coast, with Wilmington, North Carolina and Philadelphia, Pennsylvania setting 24-hour rainfall records of 15.06 in. and 6.63 in. respectively. Portions of New England had rainfall totals nearing 11 in. Floyd generated 9–10 foot storm surges across North Carolina. There are 57 deaths directly blamed on Floyd, 56 in the United States and one on Grand Bahama. Most of the deaths were due to freshwater flooding in North Carolina. Floyd was one of the costliest hurricanes on record, with an estimated $4.5 billion in damage.[10] [edit] Hurricane Gert
Main article: Hurricane Gert (1999) Gert formed from an African tropical wave several hundred miles west of Cape Verde on September 12. Gert's track arced across the Atlantic, and it became a strong Category 4 storm on the 16th. Gert threatened Bermuda as a weakening Category 2 storm, but turned away to the north-northeast. On the 23rd Gert became extratropical and merged with another low pressure system off the coast of Newfoundland.[11] Gert caused isolated instances of hurricane force winds on Bermuda, but damage there was limited to coastal erosion. No deaths are directly attributable to Gert, although two people drowned in Maine when a large wave swept them into the ocean. This wave may have been generated by Gert, despite being thousands of miles away from Maine at the time.[11] [edit] Tropical Storm Harvey
Main article: Tropical Storm Harvey (1999) Tropical Storm Harvey formed in the eastern Gulf of Mexico about 300 n mi west-southwest of St. Petersburg, Florida on September 20. Shortly after, Harvey made landfall at Everglades City, Florida on the 21st with peak winds of 55 mph (89 km/h) and a pressure of 999 mb. After passing over Florida, Harvey merged with an extratropical cyclone over the northern Bahamas on September 22. Harvey was responsible for no deaths. Molasses Reef, Florida had a peak gust of 70 mph (110 km/h). Two tornadoes were associated with Harvey, one of which uproofed a house in Collier County. Damage was estimated at $15 million. [edit] Tropical Depression Eleven
Main article: Tropical Depression Eleven (1999) See also: October 1999 Mexico floods A tropical wave organized into Tropical Depression Eleven in the Bay of Campeche on October 4. Under weak steering currents, it drifted southward, then westward, remaining weak due to a broad surface trough over the eastern Gulf of Mexico. The depression merged with the trough on the 6th, though tropical storm force winds remained over coastal waters. The depression's large, unorganized circulation, in combination with previous rainfall along the Mexican coastline, resulted in the worst flooding in at least 40 years for the region with at least 384 casualties attributed to the resulting flood.[12] [edit] Tropical Depression Twelve
Tropical Depression Twelve developed from a tropical wave on October 6 between the Lesser Antilles and Cape Verde. It moved erratically to the west-northwest without developing. While this was going on, the low-level circulation was mostly of the west side of the convection, due to a lower-level trough to the depression's north. Convection diminished and dissipated on October 8 as the low level circulation became less well-defined. However the remnant low-level cloud swirl could be tracked going west-northwest for several days afterwards, until dissipating completely north of the Lesser Antilles. [edit] Hurricane Irene
Main article: Hurricane Irene (1999) Irene formed on October 12 from a broad trough of low pressure while south of the Isle of Youth. It headed north and passed over the Isle of Youth and western Cuba on the 14th. While over the Straits of Florida, Irene reached hurricane strength. The next day, it made landfall at Key West, Florida, and again near Cape Sable, Florida. Half a day later, Irene moved back over water near Jupiter, Florida as a minimal hurricane. It slowly strengthened as it paralleled the Florida through North Carolina. When Irene interacted with a trough from the west while over the warm Gulf Stream waters, the hurricane rapidly intensified to a peak of 110 mph (180 km/h), but it accelerated to the northeast, weakening over the cooler waters of the North Atlantic. On the 19th, Irene became extratropical near Newfoundland, and was absorbed by an extratropical low shortly thereafter .[13] Total damage in Florida was around $900 million (2005 USD). There were no direct deaths in the United States that are attributed to Irene, though there were eight indirect deaths. Damage in Cuba is not known. Irene also contributed slightly to ongoing flood problems in North Carolina in the aftermath of Hurricane Floyd.[13] [edit] Hurricane Jose
Main article: Hurricane Jose (1999) Jose formed on October 8 while 400 miles (640 km) east of the Windward Islands. The storm quickly strengthened into a hurricane and over 2,000 people were evacuated from islands in its path. It moved northwest, and as the hurricane passed over Antigua, Saint-Barthélemy and St. Martin on the 20th and 21st. Over a foot of rain fell on St. Martin. It weakened to a tropical storm as it approached the U.S. Virgin Islands and as it neared Puerto Rico, Jose turned to the north-northeast. Jose remained on a near-straight line track into the north Atlantic until it lost its tropical characteristics on October 25. It then merged with a non-tropical system. Jose caused one death in Antigua and one in St. Martin. Extensive damage was reported in St. Martin from flooding and mud slides, but no dollar value is attached to this. Damage to the affected US areas was minimal.[14] [edit] Tropical Storm Katrina
Main article: Tropical Storm Katrina (1999) Katrina formed in the southern Caribbean as a tropical depression on October 27. On October 28, Hurricane Hunters reported well-defined circulation near Panama. The storm moved northwest and became Tropical Storm Katrina in the early afternoon hours on the 29th. Just barely reaching tropical storm status, the storm was only a tropical storm for six hours. The storm weakened to a tropical depression in the mid-evening hours of the same day.[15] It made landfall at Puerto Cabezas, Nicaragua, during the time it was a tropical storm. The storm only made things slighlty harder for the people of Nicaragua who were still recovering from Hurricane Mitch, which struck Nicaragua almost exactly one year earlier. The storm died over the Yucatan Peninsula on November 1 as it was absorbed by a cold front. In all, Katrina claimed no lives in Nicaragua, and only minor damage was reported. [edit] Hurricane Lenny
Main article: Hurricane Lenny Hurricane Lenny was a damaging late season hurricane first named on November 13 while in the western Caribbean Sea. Lenny tracked generally east over the Caribbean, and is the only storm recorded to have done so for an extended period of time and by November 15, Lenny had intensified to hurricane strength and was just south of Jamaica. Later that day, the National Hurricane Center upgraded Lenny to a Category 2 hurricane on the Saffir-Simpson Hurricane scale. It weakened back to a Category 1 storm, only to rapidly strengthen to its maximum pressure just as it made landfall on the south coast of Saint Croix on November 17. As a weakening but slow moving storm, Lenny made landfall at Saint Martin, Anguilla, Saint-Barthélemy, and Antigua on November 18 and November 19. Lenny weakened to a tropical depression in the open Atlantic two days later and dissipated on November 23.[16] Lenny brought more heavy rains to areas in the Leeward Islands that had been affected by Hurricane Jose just one month earlier, and brought more damage to areas struck by Hurricane Georges the previous year. Lenny also brought damaging surf to western shores of the entire Eastern Caribbean island chain, resulting in significant damage on a number of the islands. Many residents had to evacuate their homes as huge waves threatened — and in a number of cases (such as in St. Lucia) destroyed many buildings. There are seventeen deaths directly attributed to Lenny, including two in Colombia. Damage to the islands was considerable, totaling at $330 million Untied States dollars. Lenny's 155 mph (250 km/h) peak, just below Category 5 intensity on the Saffir-Simpson Hurricane Scale, makes it the strongest November hurricane on record in the Atlantic basin, although records before 1944 remain incomplete.[17] [edit] Accumulated Cyclone Energy (ACE) ranking
The table on the right shows the Accumulated Cyclone Energy for each storm in the season. The ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so hurricanes that lasted a long time (like Floyd), or powerful storms (like Gert and Lenny), have higher ACEs. [edit] Storm namesThe following names were used for named storms that formed in the north Atlantic in 1999. The names not retired from this list were used again in the 2005 season. It is the same list used for the 1993 season. A storm was named Lenny for the first (and only) time in 1999. Names that were not assigned are marked in gray.
[edit] RetirementSee also: List of retired Atlantic hurricane names The World Meteorological Organization retired two names in the spring of 2000: Floyd and Lenny. They were replaced in the 2005 season by Franklin and Lee. [edit] Season effectsThis is a table of the storms in 1999 and their landfall(s), if any. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but are still storm-related. Damage and deaths include totals while the storm was extratropical or a wave or low.
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