Typhoon Conson (2004)

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Typhoon Conson
Typhoon ( JMA )
Category 3 Typhoon ( SSHWS )
Typhoon Conson on June 8th
Typhoon Conson on June 8th
Emergence June 4, 2004
resolution June 11, 2004
Peak wind
speed
150  km / h (90  mph ) (10 minutes sustained)
185  km / h (115  mph ) (sustained for 1 minute)
Lowest air pressure 960  hPa ( mbar )
dead 2 confirmed, 30 reported
Property damage US $ 3.8 million (2004)
Affected
areas 		Philippines , Taiwan , Hong Kong and Japan
Season overview:
2004 Pacific typhoon season

Typhoon Conson ( WMO name : 0404 , JTWC name : 07W , PAGASA name: Frank ) was the first of a record-breaking ten typhoons to impact Japan during the 2004 Pacific typhoon season . Consun formed in early June 2004 from a tropical depression near the northern Philippines and slowly migrated northwards. The storm, steadily intensifying, reached typhoon strength late on June 7th according to the criteria of the Joint Typhoon Warning Center and a few hours later according to the information of the Japan Meteorological Agency .

After the typhoon turned northeast, it grazed Taiwan and reached its greatest intensity on June 9, with ten-minute winds of 150 km / h. Once at its peak, the typhoon continued to weaken and sweep over Okinawa before being downgraded to a tropical storm the next day. Shortly after the landfall on June 11th in Kōchi Prefecture , Conson became extra-tropical . The extra-tropical residual low moved further in a northeasterly direction and was last mentioned when crossing the date line on June 14th. In the Philippines, Okinawa, Taiwan and Japan, the storm brought heavy rains and strong gusts of wind. Floods caused 30 reported fatalities in the Philippines, otherwise property damage was minor.

Storm course

Typhoon train track

Early on June 4, the Joint Typhoon Warning Center (JTWC) began observing a low-pressure area with atmospheric convection located about 780 km south-southeast of Hong Kong. During the day, after the system had developed significantly, the JTWC designated the system as Tropical Depression 07W, and at the same time the Japan Meteorological Agency (JMA) began observing the system as a Tropical Depression. The system slowly migrated to the southeast and steadily intensified. It was classified as a tropical storm by U.S. Navy meteorologists at 12:00 UTC the next day. Around this time, the storm came under the responsibility of the Philippine Atmospheric, Geophysical and Astronomical Services Administration and was named Frank . Twenty-four hours later, 07W made its closest approach to the Philippines , passing Manila some 295 km away . A few hours later, the JMA also classified the system as a tropical storm and gave it the name Conson , suggested by Vietnam . It is the name of a picturesque place in this state known for the mountain, pine forest, river courses and several historical structures.

A ridge over the center of the Philippines caused Conson to turn north. The storm intensified further and according to the criteria of the JTWC, Conson reached the strength of a typhoon on June 7th at 18:00 UTC. The JMA also classified Consun as a typhoon twelve hours later. An eye about 28 km in diameter formed as the cyclone turned to the northeast. The operational projections up to this point assumed a landfall in southern Taiwan , but the turn to the northeast spared the island from a direct hit. Shortly thereafter, the JTWC upgraded the typhoon to Category Two on the Saffir-Simpson Hurricane Wind Scale , which reached one-minute sustained winds of 155 km / h. The eye appeared a bit disorganized and the cloud cover around the center warmed up, but the next day the typhoon reorganized and was classified in category three by the JTWC, since the one-minute continuous wind speeds reached 185 km / h. The intensification was the result of the influence of an approaching trough and increased poleward outflow . It was around this time that the system left PAGASA's area of ​​responsibility and therefore the meteorologists in Manila published their last warning about the hurricane.

Typhoon Conson around the time of its greatest intensity on June 9th

Because Conson passed over the warm waters of the Kuroshio , the typhoon intensified. As the typhoon responded to the influence of a baroclinic zone, the forward speed increased. A short time later, the JMA found that Conson had reached its peak intensity with ten-minute wind speeds of 150 km / h and a minimum air pressure in the center of 960  hPa ( mbar ). During the day, the typhoon passed over Okinawa and lost its force. On June 10th, Typhoon Conson began transitioning to an extra-tropical cyclone. As the train speed continued to increase, the low pressure center was freed from the shower and thunderstorm activity on the southern edge of the circulation. At around 12:00 UTC, circulation and convection fell apart, which resulted in a tropical storm a few hours later at JMA and JTWC to graduate the typhoon.

In the early hours of June 11, the JTWC reported that the storm just south of Japan had become completely extra-tropical. The JMA led Conson as a minimal tropical storm until after the landfall in the prefecture of Kōchi and reclassified the system over land to an extra-tropical storm. This continued to move northeast, but remained weak and was last mentioned in the offshore weather warnings when it crossed the international date line near the Aleutian Islands on June 14.

Differences between the storm warning centers

The Japan Meteorological Agency uses ten minute sustained winds, while the Joint Typhoon Warning Center uses one minute wind speeds to assess the severity of a storm. The arithmetical conversion factor between the two methods is 1.14. The ten-minute top wind speed Consons determined by the JMA was 150 km / h, which corresponds to a one-minute wind speed of 160 km / h. The one-minute peak wind speed determined by the JTWC is 185 km / h or converted into ten-minute wind speeds 155 km / h. The National Meteorological Center of China estimated the peak wind speed to be 150 km / h (ten minutes) and 160 km / h (one minute).

Preparations and implications

Philippines

TRMM satellite image of Typhoon Conson on June 8th

On June 7, the Philippine Atmospheric, Geophysical and Astronomical Services Administration launched Public Storm Signal No. 1 for most of Luzon . When Conson intensified into a typhoon, Public Storm Signal No. 3 and school operations in the affected region were stopped. As the typhoon passed the Philippines, it dumped heavy rain there, which reached 333.8 mm in Iba . Limited flooding and power outages occurred in Manila. 30 deaths were reported in Luzon due to the flooding caused by the rains. However, the number of deaths is uncertain, as the World Meteorological Organization stated in its seasonal report that there were no victims caused by Conson. Apart from the floods, only minor property damage was reported.

Taiwan and Hong Kong

Warnings of strong winds and heavy rains have been issued for Taiwan. Schools and shops in the south remained closed on June 9th and 10th as the typhoon passed. Some domestic flights have been canceled. Rail and ferry traffic was stopped before the storm hit. Since Conson was at times closer than 800 km, Hong Kong was ready for a storm. However, there were only a few isolated showers in Hong Kong due to the storm. The Taiwanese authorities checked the flood gates on the island on June 8 and found that 68 were missing. Since the hydraulic engineering experts on the island pointed out that this threatened unnecessary damage, 42 of the missing flood gates were replaced by June 9th. Fishing trawlers returned to ports during the storm. A crisis team was set up to coordinate search and rescue operations during and after the typhoon passed through. The rain caused by the typhoon peaks at 262.5 mm in the district of Ilan . The storm caused only minor property damage in Taiwan, with one person slightly injured. Although the storm caused heavy rainfall in parts of the island , the amount of rain was insufficient to end the drought in the southern parts of the island.

Japan

TRMM satellite image taken by Conson on June 10th during transition to an extra-tropical cyclone

On the way to the northeast, Conson moved towards Okinawa , so schools were closed there and public transport was interrupted before the approach of the storm. The Japan Meteorological Agency warned residents of heavy rain and strong winds. A United States Navy base in Okinawa was put on alert as the storm approached, as winds of 50 knots were expected. Before the storm hit, some of the islands had more than 250 mm of rain. The heavy rain, which reached 212.5 mm on Naha , caused floods and landslides. The islands' highest sustained winds were recorded on Tarama-shima at 137 km / h and the strongest gusts on Miyako-jima at 185 km / h. Although Consun went into an extra-tropical cyclone during its impact on Japan, it caused heavy rainfall and strong winds on Kyushu . The highest amount of precipitation there with 277.5 mm and gusts of 146 km / h was recorded in Tanegashima , the strongest continuous wind speed of 109 km / h was recorded in Murotomisaki .

Individual evidence

  1. ↑ Nagai: Flood Report 2004 Japan and the World ( English , PDF ; 1.4 MB) International Flood Network. January 19, 2005. Retrieved February 27, 2009.
  2. ↑ Al Gore : An Inconvenient Truth ( English ), S. 83rd
  3. ↑ a b c d e f g h i j k l m n o p Gary Padgett: Monthly Weather Summary for Tropical June 2004 ( English ) 2000. 2. Typhoon September 2004. Retrieved on 27 February, 2009.
  4. ↑ a b c d e f g JTWC Best Track for Typhoon 07W (Conson) ( English ) Joint Typhoon Warning Center . 2005. Retrieved January 5, 2010.
  5. ↑ a b c d e f g JMA Best Tracks for 2004 ( English ) Japan Meteorological Agency . 2005. Archived from the original on July 9, 2011. 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 February 27, 2009. @1@ 2Template: Webachiv / IABot / www.jma.go.jp
  6. ^ A b Philippine Atmospheric, Geophysical and Astronomical Services Administration : PAGASA Track for Typhoon 'Frank' ( English ) Typhoon 2000. 2004. Accessed February 27, 2009.
  7. ↑ JTWC Prognostic Reasoning NR. 16 ( English ) Joint Typhoon Warning Center. June 8, 2004. Accessed on February 27, 2009.  ( 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  
  8. ↑ JTWC Prognostic Reasoning NR. 22 ( English ) Joint Typhoon Warning Center. June 10, 2004. Accessed on February 27, 2009.  ( 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  
  9. ↑ JTWC Prognostic Reasoning NR. 24 ( English ) Joint Typhoon Warning Center. June 10, 2004. Accessed on February 27, 2009.  ( 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  
  10. ↑ Joint Typhoon Warning Center: Frequently Asked Questions ( English ) 2005. Archived from the original on February 11, 2008. Information: 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 February 27, 2009. @1@ 2Template: Webachiv / IABot / metocph.nmci.navy.mil
  11. ↑ a b c d Asia-Pacific Daily Report ( English , PDF ; 214 kB) Pacific Disaster Management Information Network. June 7, 2004. Retrieved February 27, 2009.
  12. ↑ Philippine Daily Inquirer : Rains wash out school opening ( English ) Financial Times Ltd. . June 8, 2004. Retrieved February 27, 2009.
  13. ↑ Evelyn Macairan: No Massive Flooding in Metro, say MMDA ( English ) Philippine Headline News. June 8, 2004. Archived from the original on June 7, 2011. 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 February 27, 2009. @1@ 2Template: Webachiv / IABot / www.newsflash.org
  14. ↑ Earthweek: A Diary of the Planet ( English ) Pittsburgh Post-Gazette. June 13, 2004. Retrieved March 27, 2009.
  15. ↑ Droughts and Floods of 2004 ( English , DOC ; 116 kB) Meteo. 2005. Retrieved February 27, 2009.
  16. ↑ a b Typhoon Conson veers northeast ( English ) Taipei Times. June 10, 2004. Retrieved February 27, 2009.
  17. ↑ Typhoon Conson (0404) ( English ) Hong Kong Observatory . June 30, 2004. Retrieved February 27, 2009.
  18. ↑ The Weather of June 2004 ( English ) Hong Kong Observatory. July 5, 2004. Retrieved February 27, 2009.
  19. ^ Nation braces for Typhoon Conson ( English ) Taipei Times. June 9, 2004. Retrieved February 27, 2009.
  20. ^ Asia-Pacific Daily Report ( English , PDF ; 158 kB) Pacific Disaster Management Information Network. June 8, 2004. Retrieved February 27, 2009.
  21. ↑ Typhoon fails to quench reservoirs in nation's south ( English ) Taipei Times. June 11, 2004. Retrieved February 27, 2009.
  22. ↑ a b Typhoon Conson dumps heavy rain on southern Japanese islands ( English ) Associated Press. June 10, 2004. Retrieved February 25, 2009.
  23. ↑ Xinhua: Strong typhoon landing in south Japan ( English ) China Economic Net. June 11, 2004. Retrieved February 27, 2009.
  24. ^ Greg Tyler: Typhoon unlikely to hit Sasebo too hard ( English ) Stars and Stripes. June 12, 2004. Retrieved February 27, 2009.
  25. ↑ June 9, 2004 5:55 pm ( English ) Weather Matrix. June 9, 2004. Retrieved February 27, 2009.