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Named Storm Summary - 2007
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Preview of 2007
 
The 2007 Atlantic hurricane season got off to an early start with Subtropical Storm Andrea forming in early May. It impacted the East Coast from North Carolina to Florida with high waves, beach erosion and strong winds, but overall, little rain for the drought-stricken Southeast.

How the rest of the hurricane season will pan out is yet to be seen, of course. But tropical weather researchers have produced their outlook for storm formation: above average.

The National Oceanic and Atmospheric Association (NOAA) announced its outlook for a "high probability" of an above average season. NOAA predicts 13-17 named storms, seven to 10 of which will become hurricans, and three to five of those category 3 or higher.

NOAA officials stress they can not predict how many hurricanes will make landfall or where. But NOAA administrator Vice Admiral Conrad C. Lautenbacher, Jr., USN (Ret.) said, "It takes just one hurricane to make it a bad year."

A forecast by noted Colorado State University researchers Philip J. Klotzbach and William M. Gray predicts 17 named storms, nine of them hurricanes, and five of those major hurricanes -- category 3 or higher.

NOAA also stresses the need for preparation, especially given the fact that 153 million people live within 50 miles of the U.S. coast, and many of them in hurricane-prone areas.

 

What Happened this year:

Named Storms

14

Hurricanes

6

Major Hurricanes

2

A less than predicted outcome...

Andrea - Tropical Storm

  Starting Early... Andrea started life on May 9...

 

Summary - Andrea

Barry - Tropical Storm

 

Summary - Barry
 

Chantal - Tropical Storm

 

Summary - Chantal

Dean - Cat 5 Hurricane

 


  Summary - Dean

Erin - Tropical Storm

 


  Summary - Erin

Felix - Cat 5 Hurricane

 

 
Summary - Felix

Gabrielle - Tropical Storm

 

Summary - Gabrielle

Humberto - Cat 1 Hurricane

 

Summary - Humberto

Ingrid - Tropical Storm

 

Summary - Ingrid
 

Jerry - Tropical Storm

 

Summary - Jerry

Karen - Tropical Storm

 

Summary - Karen


Lorenzo - Cat 1 Hurricane

 

Summary - Lorenzo


Melissa - Tropical Storm

 

Summary - Melissa

Noel - Class 1

 
 

Summary - Noel

Olga
 
OGLA FORMED AFTER THE SEASON ENDED... DECEMBER 12

Named Storm Summary - Olga

Pablo
 
No Named Storm this year
Rebekah
 
No Named Storm this year
Sebastien
 
No Named Storm this year
Tanya
 
No Named Storm this year
Van
 
No Named Storm this year
Summary of 2007
 
As the 2007 Atlantic hurricane season officially comes to a close on November 30, NOAA scientists are carefully reviewing a set of dynamic weather patterns that yielded lower-than-expected hurricane activity across the Atlantic Basin. As a result, the United States was largely spared from significant landfalling storms. However several noteworthy events took place, including two back-to-back Category 5 hurricanes hitting Central America and the rapid near-shore intensification of the single U.S. landfalling hurricane.

Below expectations 

 

May

Subtropical Storm Andrea developed off the southeastern coast of the United States on May 9 prior to start of the official Atlantic hurricane season (June 1), becoming the first named storm in May since 1981. Andrea had maximum sustained winds of 50 mph (43 knots) and immediately weakened to a depression on May 10. Storms that occur prior to the official start of the hurricane season are not uncommon. As recently as 2003, a tropical storm developed earlier in the season when Tropical Storm Ana formed on April 22.

June

Tropical Storm Barry developed in the southeastern Gulf of Mexico on June 1. Peak intensity was 60 mph (52 knots) with a minimum pressure of 997 mb. Beneficial rains fell in parts of Florida and Georgia.

The development of two named storms prior to the end of June is not an unusual occurrence. The 2007 season was the 23rd season since Atlantic Basin records began in 1851 that two or more named storms formed prior to the end of June.

may/June summary

 

July

On July, an area of low pressure developed near the Bahamas and tracked to the north-northeast. As it organized, it was upgraded to a tropical depression late on July 30. By July 31, the system strengthened into Tropical Storm Chantal south of Nova Scotia. It became extratropical late that same day as it moved over the cool waters of the north Atlantic towards Newfoundland. Peak intensity was 50 mph (43 knots) with a minimum pressure of 994 mb.

Tropical cyclone activity in the Atlantic Basin during July was near average with one tropical storm.

July Summary

August

On August 13, Tropical Depression Four formed in the eastern Atlantic Ocean off the coast of Africa. This tropical depression became organized as it moved west and was upgraded to Tropical Storm Dean. As Dean progressed westward, it continued to intensify and was classified as the first 2007 Atlantic hurricane on August 16. The hurricane passed into the Caribbean near Martinique and Saint Lucia as a Category 2 hurricane on August 17.

Dean continued to strengthen and reached Category 5 status by late on August 20, and it made landfall as a Category 5 hurricane on August 21 on the Yucatan Peninsula of Mexico near Costa Maya in a sparsely populated area. After weakening over the peninsula, Dean passed again over open water in the southwestern part of the Gulf of Mexico, enabling it to strengthen back to a Category 2 hurricane before making landfall a second time near Tecolutla on August 22. Peak intensity was 165 mph (144 knots) with a minimum pressure of 906 mb. Dean was responsible for roughly 40 deaths and major damage across the southern and central Caribbean with the largest tolls in Mexico and Haiti.

A tropical depression formed on August 14 about 425 miles east-southeast of Brownsville, Texas, and about 425 miles east of La Pesca, Mexico. It organized enough to be classified the next day as a tropical storm and given the name Erin. Erin weakened and crossed the Texas coast near Lamar on August 16 as a tropical storm and later became extratropical. The remnants of Erin continued northwestward through Texas and turned north and tracked over the south-central U.S., causing extensive flooding in Oklahoma on August 19. Peak intensity was 40 mph (35 knots) with a minimum pressure of 1003 mb.

On August 31, a westward-moving tropical depression formed east of the Windward Islands. It organized enough to be classified the next day as Tropical Storm Felix and intensified later that day into a hurricane.

Three tropical cyclones formed in the Atlantic Basin during August. Two of these cyclones became named storms and one of these, Dean, reached major hurricane status. The number of tropical storms and hurricanes was slightly below average for August.

August Summary

September

Hurricane Felix continued to move westward over very warm waters and intensified into a Category 5 storm by late on September 2. Felix weakened briefly overnight and then strengthened into a Category 5 storm again before it struck northeastern Nicaragua on September 4. The rugged terrain of Central America weakened the storm significantly such that it was downgraded to a tropical depression on September 5. The strongest winds in Hurricane Felix were 165 mph (144 knots), and its lowest pressure was 929 mb.

Media reports indicate that Felix was responsible for more than 100 deaths in Nicaragua and Honduras. The hurricane caused major damage in the landfall area in Northeastern Nicaragua with many buildings damaged or destroyed along the coast near and north of Puerto Cabezas. Additional significant damage occurred due to inland flooding over portions of Central America. Felix also produced minor damage on Grenada, Aruba, Bonaire, and Curacao. An area of low pressure off the Carolina coast developed into Subtropical Storm Gabrielle on September 7. Reconnaissance aircraft data suggested the presence of a weak warm core on the 8th, prompting a reclassification of Gabrielle as a tropical storm. The system passed over the Outer Banks of North Carolina on the ninth, and weakened to a depression the next day as it moved northeast. The final advisory was issued on September 11. The strongest winds in Tropical Storm Gabrielle were 50 mph (44 knots), and its lowest pressure was 1004 mb.

Hurricane Humberto began as an area of disorganized showers and thunderstorms off the coast of western Cuba on September 8. These storms moved slowly west-northwestward across the Gulf of Mexico and organized enough to be classified as Tropical Depression Nine on the morning of September 12. Within a few hours, the tropical depression had strengthened into Tropical Storm Humberto. The system turned northward and continued to intensify until it reached hurricane status early in the morning of September 13. Hurricane Humberto made landfall near High Island, Texas, as a Category 1 hurricane. The storm rapidly weakened as it traveled northeast over land and dropped heavy amounts of rain on Louisiana, Mississippi, Alabama, and parts of Georgia and the Carolinas. Humberto is blamed for the death of a man who was killed by a falling carport in Bridge City, Texas. The strongest winds in Hurricane Humberto were 85 mph (73 knots), and its lowest pressure was 986 mb.

A tropical wave 1,130 miles east of the Lesser Antilles developed into Tropical Depression Eight on September 12 at the same time that the system that later became Humberto developed. Unlike Tropical Depression Nine, this depression developed slowly and did not become Tropical Storm Ingrid until September 14. Ingrid was weakened by strong upper-level winds and reclassified as a depression on September 15. The storm continued to grow increasingly disorganized and the final advisory was issued on September 17. The strongest winds in Tropical Storm Ingrid were 45 mph (40 knots), and its lowest pressure was 1004 mb.

Tropical Depression Ten formed in part from a decaying frontal boundary that became stationary off the Southeast Coast on September 17. On September 18 an upper-level low formed over Florida and the eastern Gulf of Mexico while a westward-moving wave was moving over the Bahamas. These features combined to produce a weak area of low pressure over the western Bahamas later that day. This system moved slowly westward over Florida and into the eastern Gulf September 19-20. On September 21 thunderstorm activity increased near the surface low and a subtropical depression formed about 45 miles southwest of Apalachicola, Florida. This system was reclassified as tropical depression as it moved northwestward, but it maximum winds never exceeded 35 mph. Tropical Depression Ten made landfall near Fort Walton Beach, Florida, and dissipated with minimal impacts.

In the early morning of September 23, an extratropical area of low pressure was classified as a subtropical depression about 1,060 miles west of the Azores. This depression quickly strengthened into Subtropical Storm Jerry later that morning and was reclassified as a tropical storm early on September 24. Tropical Storm Jerry weakened later on September 24 as it moved over cooler waters, then re-intensified back into a tropical storm later that day before being absorbed by a vigorous extratropical cyclone. The strongest winds in Tropical Storm Jerry were 40 mph (35 knots), and its lowest pressure was 1000 mb.

Karen began as a very large tropical wave off the coast of Africa that slowly organized into a tropical depression on September 25. Later that same day, the storm strengthened into Tropical Storm Karen. The strongest winds in Tropical Storm Karen originally were estimated at 70 mph (60 knots), and its lowest pressure was 990 mb. But post-storm analysis found the winds were stronger than originally thought --- 75 mph (65 knots). So the National Hurricane Service upgraded Karen to a hurricane two months after the storm ended. The storm never threatened land and dissipated just east of the Leeward Islands.

An area of convection that had been moving about the western Caribbean was classified as a tropical depression on the evening of September 25. The system moved slowly south and southwest into the Bay of Campeche and intensified rapidly on September 27 to Tropical Storm Lorenzo. The system reached hurricane status early that evening and made landfall in central Mexico the next morning as a Category 1 hurricane. The strongest winds in Hurricane Lorenzo were 80 mph (70 knots), and its lowest pressure was 990 mb.

On September 28, an area of low pressure near the Cape Verde islands developed into a tropical depression. This storm strengthened the next morning and became Tropical Storm Melissa. The storm weakened into a tropical depression and then a remnant low on September 30. The strongest winds in Tropical Storm Melissa were 45 mph (40 knots), and its lowest pressure was 1003 mb.

Eight tropical storms formed in the Atlantic Basin during September. This tied 2002 for the record of the most formations during the month. Four of the storms became hurricanes, but only one of these became a major hurricane. Although the number of tropical storms and hurricanes was above average for September, most of these tropical cyclones were relatively short-lived.

September Summary

October-November

Tropical Depression Fifteen formed in the middle Atlantic on October 11 about 860 miles east of Bermuda. The tropical depression would last into October 12 then quickly diminish to a remnant low as upper level wind shear tore the system apart with little impact to any land 905 miles east of Bermuda.

Tropical Storm Noel formed from a tropical wave that departed the West Coast of Africa on October 16. As this wave approached the Lesser Antilles, it began to interact with an upper-level trough located near Puerto Rico. This interaction lead to the formation of a broad surface low pressure area on October 23 about 150 miles east-northeast of the northern Leeward Islands. After forming, the low moved slowly westward to west-southwestward during the next couple of days with excessive heavy rain from Puerto Rico to Hispaniola (Haiti and The Dominican Republic) to Cuba. Major flooding would ensue from this storm. Strong upper-level westerly winds that initially inhibited additional development of the low decreased on October 27. This resulted in the formation of a tropical depression early on October 28 about 200 miles south of Port au Prince, Haiti. The depression turned northwestward and strengthened to a tropical storm shortly thereafter. Flooding rains continued to swamp Hispaniola and Cuba. A tragic story was unfolding with many homes and villages being flooded and reports of many killed in the deluges. The maximum winds increased to 60 mph before Noel made landfall along the south coast of Haiti early on October 29. The low-level circulation of Noel became disrupted over Haiti and the center reformed near the northwestern coast of Hispaniola a few hours later. After the center re-formed, Noel tracked westward and made another landfall in eastern Cuba early on October 30. Noel spent a little more than 24 hours over eastern Cuba before emerging over the Atlantic waters on October 31.

At the month's end, Noel was centered between Cuba and the Bahamas, about 160 miles south-southwest of Nassau. Noel would go down as one of the deadliest storms in the 2007 Atlantic Tropical Season due to mudslides and flash flooding across The Dominican Republic and Haiti. Media reports said 143 people were killed because of Noel, making it the deadliest storm for the season.

Noel's story would not end here as it would continue its historical trek into November, becoming the season's fifth hurricane. It pushed away from Cuba and became a minimal hurricane on November 1. It reached a maximum wind of 80 mph with a central pressure of 980 mb.

Noel then transitioned to an extratropial low pressure center and dramatically deepened to 966 mb as it raced along the eastern Seaboard. The lowest pressure would come in the Maritimes. The winds expanded and slammed eastern Long Island to eastern New England with wind gusts 50-90 mph. The highest winds came offshore and over the outer Cape. Considerable tree and power line damage was done in eastern New England before the storm spun into the Maritimes as a signifcant storm with wind gusts of 60-100+ mph. One gust in the Maritimes reached 112 mph in Nova Scotia.

Quite a storm with serious impacts in the Caribbean due to deadly flash flooding, Heavy beach erosion along the east coast of Florida, and Northeast to Maritimes with tree and power line damage.

October/November

Averages

The recent average seasonal activity (1995-2006) in the North Atlantic basin is 14.8 named storms, 8.2 hurricanes and 3.9 major hurricanes. These values represent an increase over the average of the preceding 25 years (1970-1994) of 8.6 named storms, 5 hurricanes and 1.5 major hurricanes.

The 2007 Atlantic Basin season as of November 28, 2007, had two tropical depressions, 14 named storms, six hurricanes and two major hurricanes, slightly below average for named storms and below average for hurricanes and major hurricanes versus the recent average (1995-2006), but above the long-term Atlantic Basin 25-year average for named storms and near average for hurricanes and major hurricanes.

Storm Summaries

Storm Tracks

All in all, one hurricane, one tropical storm and three tropical depressions struck the United States: Tropical Depression Barry came ashore near Tampa Bay, Fla., on June 2; Tropical Depression Erin hit southeast Texas on August 16 and Tropical Depression Ten came ashore along the western Florida panhandle on Sept. 21; Tropical Storm Gabrielle hit east-central North Carolina on Sept. 9, and Hurricane Humberto hit the upper Texas coast on Sept. 13.

Also this year, the U.S. was reminded of the dangers of inland flooding. "Texas and Oklahoma experienced deadly flooding when Erin dumped up to 11 inches of rain. Fresh water flooding is yet another deadly aspect of tropical cyclones," said Ed Rappaport, acting director of NOAA's National Hurricane Center.

Eight storms formed in the Atlantic Basin during September - tying September 2002 for having the most storm formations during any given month.

For the first time in recorded history, two Category 5 hurricanes made landfall in the Atlantic Basin during the same season. Hurricane Dean hit the Yucatan Peninsula near Costa Maya on Aug. 21 with 165 mph winds, followed by Hurricane Felix on Sept. 2, near Punta Gorda, Nicaragua, with 160 mph winds. With a central pressure of 906 millibars, Hurricane Dean had the third lowest pressure at landfall -- behind the Labor Day 1935 Hurricane in the Florida Keys and Hurricane Gilbert of 1988 in Cancun, Mexico. Dean is also the first Category 5 hurricane to make landfall in the Atlantic Basin since Hurricane Andrew hit South Florida in 1992.

Hurricane Humberto grew from a tropical depression with top winds of 35 mph into a hurricane with winds of 85 mph within 24 hours - only three others storms (Celia 1970, Arlene and Flora 1963) intensified faster during a 24-hour period from below tropical storm strength.

The 2007 Atlantic hurricane season produced the predicted number of named storms, but the combined number, duration and intensity of the hurricanes did not meet expectations," said Gerry Bell, Ph.D., lead seasonal hurricane forecaster at NOAA's Climate Prediction Center. "The United States was fortunate this year to have fewer strong hurricanes develop than predicted. Normally, the climate patterns that were in place produce an active, volatile hurricane season."

The climate patterns predicted for the 2007 hurricane season -- an ongoing multi-decadal signal (the set of oceanic and atmospheric conditions that have spawned increased Atlantic hurricane activity since 1995) and La Ni#a -- produced the expected below-normal hurricane activity over the eastern and central Pacific regions. However, La Ni#a's impact over the Atlantic was weaker than expected, which resulted in stronger upper-level winds and increased wind shear over the Caribbean Sea during the peak months of the season (August-October). This limited Atlantic hurricane formation during that period. NOAA's scientists are investigating possible climate factors that may have led to this lower-than-expected activity.

Information and data from:
The Weather Channel
National Hurricane Center -- NOAA
National Climatic Data Center -- NOAA
Climate Prediction Center -- NOAA
Colorado State University -- Philip J. Klotzbach and William M. Gray


             

Added in 2007

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