2007 Pacific hurricane season

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2007 Pacific hurricane season
All the storms of the season
All the storms of the season
Formation of the
first storm		 May 26, 2007
Dissolution of the
last storm		 October 23, 2007
Strongest storm Flossie - 949  hPa  ( mbar ), 120  kn  (220  km / h )
Tropical lows 15th
Storms 11
Hurricanes 4th
Severe hurricanes ( Cat. 3+ ) 1
Total number of victims 39 total
Total damage $ 80 million   (2007)
Pacific hurricane seasons
2005 , 2006 , 2007 , 2008 , 2009

The 2007 Pacific hurricane season officially began on May 15 and ended on November 30. It is during this period that most tropical storms form , as only then are suitable conditions such as warm ocean , humid air, and little wind shear available for tropical cyclones to form. All storms that form north of the equator and east of 180 ° west longitude belong to this basin. Storms that form further west are no longer called hurricanes but typhoons and are part of the 2007 Pacific typhoon season .

The 2007 Pacific hurricane season remained well below the average in terms of hurricane activity ( ACE ) (−60.2%). If one considers the entire northern hemisphere, the activity was the lowest since 1977. In addition, there was in the first half of the year between April 6 (tropical storm Kong-rey) and May 13 (cyclone Akash) the longest period with 37 days without a global one Cyclone activity since satellite observation began. The number of hurricanes was also comparatively low, only in 1977 (22 storms), 1979 and 1988 (26 storms), and 1999 (27 storms) fewer hurricanes were observed.

Storms in the Atlantic are listed here .

Accumulated Cyclone Energy (ACE)

ACE (10 4 kt 2 ) - storm:
1 5.30
(17.6)		 Flossie 7th 1.98 Barbara
2 7.84 Henriette 8th 1.42 Juliette
3 5.81 Ivo 9 1.18 Gil
4th 4.32 Kiko 10 0.613 Alvin
5 2.77 Cosme 11 0.49 Erick
6th 2.40 Dalila
Total: 34.2 (17.6)

The table opposite shows the ACE for every storm this year. The ACE describes the energy of a tropical storm by multiplying the strength of a storm with its duration, i.e. long-lasting storms and strong storms have a high ACE value.

Values ​​written in brackets refer to the course in the Central Pacific Basin, while the numbers without brackets show the values ​​of the storms in the East Pacific.

Storms

Tropical storm Alvin

Tropical storm
Alvin 29 may 2007 1709Z.jpg Alvin 2007 track.png
Duration May 27th - May 31st
intensity 35 kn (65 km / h ) (1 minute) , 1003 hPa

On May 24, a nearly stationary depression formed 885 km southwest of Manzanillo . The system was able to organize itself better thanks to the good high winds . By May 26th, the low had developed well-defined circulation , but the associated convection was quite small. On May 27, the convective activity of the system increased dramatically and the first tropical depression of the season was created. The slowly west pulling system could for the time being, due to poor thermodynamic conditions do not increase and an emerging fault put the system in such a way to that an expert from the NHC indicated that the system is not enough convection have to make it further than tropical cyclone classify can. However, on May 28, the convection was able to regenerate and the system was finally able to intensify into a tropical storm on May 29. On the same day, the convection was again limited and the center of the storm could no longer be clearly located on satellite images . Eventually Alvin was downgraded back to a tropical depression on May 30th and degenerated to a residual depression the next day.

Tropical storm Barbara

Tropical storm
02EBARBARA 2007 at 40kt 1002mb.jpg Barbara 2007 track.png
Duration May 29th - June 2nd
intensity 45 kn (85 km / h ) (1 minute) , 1000 hPa

On May 27, an area of ​​unorganized convection emerged in the Gulf of Tehuantepec . The next day a small low pressure area formed in the system and as the system moved northwards it was able to organize itself better. On May 29, the system finally organized itself into a tropical depression. The newly formed tropical cyclone was initially stationary and on May 30th, supported by warm water temperatures, slight wind shear and unstable air stratification, intensified into a tropical storm. It was only the third time after 1956 and 1984 that two named systems formed in May.

The system eventually moved in a southeastern direction and lost most of the organized convection on May 31st. It almost degenerated into a residual low. The system was finally able to strengthen again and on June 2, as a tropical storm hit the Mexican - Guatemalan border overland and caused only minor damage.

Tropical Depression Drei-E

Tropical depression
TD Three-E 2007 2036Z June11.jpg Three-E 2007 track.png
Duration June 11th - June 12th
intensity 30 kn (55 km / h ) (1 minute) , 1004 hPa

On the evening of June 9th, the NHC first recognized a wide, unorganized low pressure area a few hundred kilometers southwest of Acapulco . The shower activity of the system was able to organize itself better during the night, but for the time being, despite the good development conditions, the system was not able to intensify into a tropical low pressure area. Eventually, on July 11th, the system gained enough organization to be classified as a tropical depression. However, the system quickly reached an area with more stable air and colder sea ​​temperatures and could never amplify itself into a tropical storm. On June 13th it degenerated to a residual low.

Tropical low pressure area Vier-E

Tropical depression
TD Four-E 2007 2100Z July9.jpg Four-E 2007 track.png
Duration July 9th - July 11th
intensity 30 kn (55 km / h ) (1 minute) , 1006 hPa

On July 9th, an area of ​​increased convective activity developed about 1,170 km south of Manzanillo . The environmental conditions allowed the system to organize itself better, and a well-defined depression area arose in the fault . On the same day the system was classified as a tropical depression. On July 10, the convection of the system weakened, but was able to re-form despite poor development conditions. On July 11th, after the system had again lost most of the convection, it degenerated to a residual low.

Tropical Depression Five-E

Tropical depression
TD Five-E 2007 2100Z July14.jpg Five-E 2007 track.png
Duration July 14th - July 15th
intensity 30 kn (55 km / h ) (1 minute) , 1006 hPa

On July 11, shortly after the tropical depression Vier-E had degenerated to a residual depression, a new tropical fault developed about 350 miles south of Acapulco . While the NHC recognized that the tropical disturbance had potential for further development, the flow conditions in the area did not encourage it. On July 12th, however, the system was able to develop deep convection over the center and on July 14th Dvorak evaluations showed that the system had intensified into a tropical depression . However, the tropical cyclone quickly reached an area of ​​cooler waters and high vertical wind shear, and finally broke up on July 15 without ever reaching tropical storm strength.

Hurricane Cosme

Category 1 hurricane
Cosme 16 july 2007 1945Z.jpg Cosme 2007 track.png
Duration July 14th - July 22nd
intensity 65 kn (120 km / h ) (1 minute) , 987 hPa

Two hours after the Tropical Depression Five-E had been classified a tropical gained disorder a surface circulation and enough organized deep convection to also as a tropical depression classified to be.

The system began to organize itself better and was finally able to intensify into a tropical storm on July 15th. On July 16, Cosme intensified with the first hurricane in 2007. However, cooler water temperatures and severe wind shear caused a rapid weakening shortly thereafter. Still, the system was able to continue to form organized convection and held tropical storm strength for another day before weakening into a tropical depression as it crossed into the central Pacific . Cosme then moved northwest , and finally drifted 295 km south of the Big Island , Hawaii on July 21, causing heavy rain and gusts of wind of 65 km / h. On July 22nd, Cosme began to disintegrate.

Tropical storm Dalila

Tropical storm
Dalila 25 july 2007 2100Z.jpg Dalila 2007 track.png
Duration July 22nd - July 27th
intensity 50 kn (95 km / h ) (1 minute) , 995 hPa

On July 20th, a tropical disturbance was first detected , south-southwest of the Gulf of Tehuantepec . The NHC gave the system good chances of slow development, and on July 22, after the ground circulation of the disturbance became more pronounced, the NHC classified the system as the seventh tropical depression of the season.

Despite relatively stable air stratification and constant wind shear , the system was able to intensify into a tropical storm on July 23 and finally reached its peak strength as a moderate tropical storm on July 24. Over the next three days, Dalila reached an area with cooler sea temperatures and degenerated to a residual low on July 27th.

Tropical Storm Erick

Tropical storm
Erick 01 aug 2007 1825Z.jpg Erick 2007 track.png
Duration July 31st - August 2nd
intensity 35 kn (65 km / h ) (1 minute) , 1004 hPa

On July 28, a tropical fault occurred about 1,530 km south of Baja California and moving in a westerly direction. The next day, a wide area of ​​low pressure formed, but light wind shear initially hampered the development of the system. On the morning of July 31, the system was finally able to establish deep convection over the center and the NHC ranked the system as the eighth tropical depression of the season. On August 1, the system was upgraded to Tropical Storm Erick based on Dvorak observations . Nevertheless, due to persistent vertical wind shear , Erick was unable to gain any further strength and finally broke up on August 2nd.

Hurricane Flossie

Category 4 hurricane
Flossie 11 aug 2007 2015Z.jpg Flossie 2007 track.png
Duration August 8th - August 16th
intensity 120 kn (220 km / h ) (1 minute) , 949 hPa

On August 2, a tropical fault formed about 970 km south-southeast of Acapulco . Showers and thunderstorms increased associated with a small depression , and as the system continued to be organized, the National Hurricane Center determined on August 6 that it could become a tropical depression the following day. The system was classified as Tropical Depression Nine-E on August 8, approximately 2025 km from the southern tip of Lower California , and later that day was upgraded to Tropical Storm Flossie. The storm developed an eye that had good flow of cirrus clouds in all quadrants. On August 10, the eye became more pronounced and Flossie was upgraded to a hurricane. Hurricane Flossie intensified rapidly overnight and was a major hurricane on the morning of August 11th. Shortly thereafter, the storm exceeded 140 degrees west longitude into the central Pacific.

In the central Pacific basin, the storm continued its west course towards the Hawaiian Islands . On the afternoon of August 11th, Flossie reached wind speeds of 220 km / h , moved into an area with growing vertical shear winds on August 12th, and the hurricane weakened slightly. However, the storm did not lose as much force as was originally forecast, and the CPHC issued a hurricane warning for the Big Island the next morning .

Eventually, as the storm approached the Big Island on August 13, Flossie took the wind shear toll and weakened into a hurricane that was on the low end of Category 3. On late August 14, Flossie was downgraded to a tropical storm and on August 16 to a tropical depression with no damage on land.

Tropical storm Gil

Tropical storm
Gil 29 aug 2007 1825Z.jpg Gil 2007 track.png
Duration August 29th - September 2nd
intensity 40 kn (75 km / h ) (1 minute) , 1001 hPa

Tropical Depression Ten-E formed on August 29 west of Manzanillo , Mexico and became Tropical Storm Gil that afternoon. Gil led to the flooding of Culiacan , Sinaloa . There a 14-year-old boy was washed away by the water of a river that flooded the place up to 1.5 m high. Gil was downgraded to a tropical depression on August 30th. On September 2, the system dissolved.

Hurricane Henriette

Category 1 hurricane
Henriette 04 sept 2007 1745Z.jpg Henriette 2007 track.png
Duration August 30th - September 6th
intensity 75 kn (140 km / h ) (1 minute) , 972 hPa

A weather disturbance became the Tropical Depression Elf-E on August 30 about 400 km southeast of Lower California. After the increase in wind speeds during September 4th, the NHC upgraded Henriette to Category 1 hurricane. After further intensification, the storm reached the Baja California peninsula near José del Cabo on the night of September 5 as a category 2 hurricane and brought heavy rains that claimed four lives. After reaching the coastline, Henriette quickly lost strength and was downgraded to a tropical storm. Within the next 24 hours, the system over the mainland disintegrated.

Hurricane Ivo

Category 1 hurricane
Ivo 20 sept 2007 2055Z.jpg Ivo 2007 track.png
Duration September 18 - September 23
intensity 70 kn (130 km / h ) (1 minute) , 984 hPa

On September 18, the Tropical Depression Twelve-E formed 1080 km south of the tip of Lower California, which was classified a little later as Tropical Storm Ivo and on September 19 as Category 1 hurricane. The storm slackened as it approached the southern part of the Baja California Peninsula and on September 23, the NHC issued its final warning regarding the hurricane .

Tropical Depression Thirteen-E

Tropical depression
TD Thirteen-E 19 sept 2007 1808Z.jpg Thirteen-E 2007 track.png
Duration September 19 - September 20
intensity 30 kn (55 km / h ) (1 minute) , 1007 hPa

Tropical Depression Thirteen-E formed on September 19, southwest of the Baja California Peninsula . The system was unable to develop further due to a cool surface water temperature and wind shear and disintegrated on September 20th.

Tropical storm Juliette

Tropical storm
Juliette 30 sept 2007 1740Z.jpg Juliette 2007 track.png
Duration September 29th - October 2nd
intensity 50 kn (95 km / h ) (1 minute) , 997 hPa

The Tropical Depression Fourteen-E formed on September 29, west-southwest of Manzanillo . During the day it intensified into Tropical Storm Juliette, which peaked on September 30th with wind speeds of 85 km / h. The system began to weaken due to increasing wind shear. Juliette broke up on October 1st without posing any threat to the mainland.

Tropical storm Kiko

Tropical storm
Kiko 20 oct 2007 1800Z.jpg Kiko 2007 track.png
Duration October 15 - October 23
intensity 60 kn (110 km / h ) (1 minute) , 991 hPa

Tropical Depression Fifteen-E formed about 650 km southwest of Manzanillo on October 15 . It was classified as Tropical Storm Kiko the following day. The storm center remained almost in place and the system began to weaken due to wind shear. On October 17, the system again reached the intensity of a tropical storm, migrating east and northeast towards mainland Mexico, and issuing storm warnings began. On October 19, Kiko changed direction to northwest. The storm gained strength on its migration route along the Mexican coast and reached its greatest strength on October 21, just below the threshold of a hurricane. After that, the system weakened on a western course and disbanded on October 23.

Time overview of the season

Storm names

Names for all named storms that form in the northeast Pacific in 2007 are taken from the list below. This is the same list that was used during the 2001 Pacific Hurricane season , with the exception of Alvin, who replaced Adolph. Adolph had been deleted for reasons of political sensitivity. The name Alvin was first used for a storm in 2007.

  • Alvin
  • Barbara
  • Cosme
  • Dalila
  • Erick
  • Flossie
  • Gil
  • Henriette
  • Ivo
  • Juliette
  • Kiko
  • Lorena (not taken)
  • Manuel (not assigned)
  • Narda (not taken)
  • Octave (not awarded)
  • Priscilla (not awarded)
  • Raymond (not taken)
  • Sonia (not awarded)
  • Tico (not awarded)
  • Velma (not taken)
  • Valais (not awarded)
  • Xina (not awarded)
  • York (not taken)
  • Zelda (not taken)

Storms that form in the central Pacific, i.e. between the date line and the 140th degree of longitude, are named based on four consecutive lists of names. These names are used continuously. No name was given in the Central Pacific during the 2007 hurricane season.

The World Meteorological Organization has not removed any of the foregoing names from the list of tropical cyclone names , so those names will be used again during the 2013 Pacific hurricane season .

Web links

Commons : 2007 Pacific hurricane season  - collection of images, videos, and audio files

Individual evidence

  1. ↑ Knabb: August 5 Tropical Weather Outlook (2) . National Hurricane Center. 2007. Accessed on August 8, 2007.  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: dead link / ftp.met.fsu.edu  
  2. ↑ Brown: August 6 Tropical Weather Outlook . National Hurricane Center. 2007. Accessed on August 8, 2007.  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: dead link / ftp.met.fsu.edu  
  3. ^ Rhome: Tropical Storm Flossie Discussion Two . National Hurricane Center. 2007. Retrieved August 11, 2007.
  4. ^ Franklin: Tropical Storm Flossie Discussion Five . National Hurricane Center. 2007. Retrieved August 11, 2007.
  5. ^ Roberts / Knabb: Hurricane Flossie Discussion Eight . National Hurricane Center. 2007. Retrieved August 11, 2007.
  6. ↑ Knabb: Hurricane Flossie Discussion Nine . National Hurricane Center. 2007. Retrieved August 11, 2007.
  7. ↑ Mainelli: Hurricane Flossie Discussion Eleven . National Hurricane Center. 2007. Retrieved August 11, 2007.
  8. ↑ Kodama: Hurricane Flossie Discussion Thirteen . Central Pacific Hurricane Center. 2007. Archived from the original on March 3, 2016. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 12, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  9. ↑ Kodama: Hurricane Flossie Forecast / Advisory Thirteen . Central Pacific Hurricane Center. 2007. Archived from the original on March 3, 2016. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 12, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  10. ↑ Kodama / Birchard: Hurricane Flossie Discussion Fourteen . Central Pacific Hurricane Center. 2007. Archived from the original on March 3, 2016. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 12, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  11. ↑ Kodama: Hurricane Flossie Discussion Seventeen . Central Pacific Hurricane Center. 2007. Archived from the original on March 3, 2016. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 12, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  12. ↑ Houston: Hurricane Flossie Discussion Nineteen . Central Pacific Hurricane Center. 2007. Archived from the original on March 3, 2016. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 13, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  13. ^ Donaldson: Hurricane Flossie Discussion Twenty-Three . Central Pacific Hurricane Center. 2007. Archived from the original on March 3, 2016. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 15, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  14. ^ Donaldson: Hurricane Flossie Discussion Twenty-Seven . Central Pacific Hurricane Center. 2007. Archived from the original on December 27, 2015. Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 15, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  15. ^ Browning: Hurricane Flossie Discussion Thirty-One . Central Pacific Hurricane Center. 2007. Archived from the original on March 3, 2016. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 16, 2007. @1@ 2Template: Webachiv / IABot / www.prh.noaa.gov
  16. ↑ BLAKE: Tropical Storm Gil Discussion Two . National Hurricane Center. August 29, 2007. Retrieved August 29, 2007.
  17. ↑ http://www.eluniversal.com.mx/notas/446021.html
  18. ↑ Blake / Avila: Tropical Depression 11-E Discussion One . National Hurricane Center. August 30, 2007. Retrieved August 30, 2007.
  19. ↑ Mundell / Pasch: Tropical Depression GIL Forecast Discussion 17 . National Hurricane Center. September 2, 2007. Retrieved September 2, 2007.
  20. ↑ Blake / Avila: Tropical Depression 11-E Discussion One . National Hurricane Center. August 30, 2007. Retrieved August 30, 2007.
  21. ↑ Mainelli: HURRICANE HENRIETTE DISCUSSION NUMBER 22A . National Hurricane Center. September 5, 2007. Retrieved September 5, 2007.
  22. ↑ Avila: HURRICANE IVO DISCUSSION NUMBER 7 . National Hurricane Center. September 19, 2007. Retrieved September 9, 2007.
  23. ↑ Thome: TROPICAL DEPRESSION THIRTEEN-E DISCUSSION NUMBER 3 . National Hurricane Center. September 20, 2007. Retrieved September 20, 2007.