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Encyclopedia > Joint Typhoon Warning Center

The Joint Typhoon Warning Center (JTWC) is a joint United States NavyUnited States Air Force task force located at Naval Maritime Forecast Center in Pearl Harbor, Hawaii. The JTWC is responsible for the issuing of tropical cyclone warnings in the North West Pacific Ocean, South Pacific Ocean and Indian Ocean for United States Department of Defense interests, as well as U.S. and Micronesian civilian interests within the command's area of responsibility (AOR). The JTWC provides support to all branches of the U.S. Department of Defense and other U.S. government agencies. Their products are intended for the protection of primarily military ships and aircraft as well as military installations jointly operated with other countries around the world.[1] Image File history File links Npmoc. ... USN redirects here. ... The United States Air Force (USAF) is the aerial warfare branch of the United States armed forces and one of the seven uniformed services. ... This article is about the harbor in Hawaii. ... Official language(s) English, Hawaiian Capital Honolulu Largest city Honolulu Area  Ranked 43rd  - Total 10,931 sq mi (29,311 km²)  - Width n/a miles (n/a km)  - Length 1,522 miles (2,450 km)  - % water 41. ... Cyclone Catarina, a rare South Atlantic tropical cyclone viewed from the International Space Station on March 26, 2004 Hurricane and Typhoon redirect here. ... The United States Department of Defense (DOD or DoD) is the federal department charged with coordinating and supervising all agencies and functions of the government relating directly to national security and the military. ... The United States Department of Defense, abbreviated DoD or DOD and sometimes called the Defense Department, is a civilian Cabinet organization of the United States government. ...

Contents

History

Radar image of Typhoon Cobra

The beginning of the formation of a typhoon warning center in the Pacific occurred in the wake of Typhoon Cobra in December 18, 1944. A small but significant typhoon east of the Philippines, Typhoon Cobra led to the largest naval disaster in United States history with 790 lives lost, and was the worst United States military loss from a tropical cyclone impact since 1889. Due to this typhoon, weather stations were established in Caroline Islands, and eventually in Manila, Iwo Jima, and Okinawa. New weather central offices (for coordinating data) were established at Guam and Leyte.[2] JTWC was originally established in 1959 at Nimitz Hill, Guam combined the efforts of the former naval centers located in Guam, Hawaii, and the Philippines with the Air Force center in Japan.[3] In November 1962, Typhoon Karen destroyed the building housing the Fleet Weather Center/Joint Typhoon Warning Center. It relocated in a more typhoon-proof building in 1965.[4] It was relocated to Pearl Harbor on January 1, 2000 due to the 1995 Base Realignment and Closure (BRAC) round. Image File history File links Download high-resolution version (700x707, 130 KB) Originally captured on radar by a ship in the United States Navy, taken from NOAA Photo Library. ... Image File history File links Download high-resolution version (700x707, 130 KB) Originally captured on radar by a ship in the United States Navy, taken from NOAA Photo Library. ... is the 352nd day of the year (353rd in leap years) in the Gregorian calendar. ... 1944 (MCMXLIV) was a leap year starting on Saturday. ... Lowest pressure ≤907 mbar Damage Three destroyers lost Fatalities 790 U.S., unknown elsewhere Areas affected Philippine Sea Part of the 1940-1944 Pacific typhoon seasons Typhoon Cobra, also known as the Typhoon of 1944, was the United States Navy designation for a tropical cyclone which struck the United States... Year 1889 (MDCCCLXXXIX) was a common year starting on Tuesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Thursday of the 12-day slower Julian calendar). ... Year 1959 (MCMLIX) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... Nimitz Hill is the home of the United States Navy Commander Naval Forces Marianas located on the southern half of the island of Guam. ... Official language(s) English, Hawaiian Capital Honolulu Largest city Honolulu Area  Ranked 43rd  - Total 10,931 sq mi (29,311 km²)  - Width n/a miles (n/a km)  - Length 1,522 miles (2,450 km)  - % water 41. ... Lowest pressure 897 mbar Damage $250 million (1962 USD) $1. ... Year 1965 (MCMLXV) was a common year starting on Friday (link will display full calendar) of the 1965 Gregorian calendar. ... is the 1st day of the year in the Gregorian calendar. ... 2000 (MM) was a leap year starting on Saturday of the Gregorian calendar. ... Year 1995 (MCMXCV) was a common year starting on Sunday (link will display full 1995 Gregorian calendar). ... Base Realignment and Closure (BRAC) is a process of the United States federal government directed at the administration and operation of the US Armed Forces, used by the United States Department of Defense and Congress to close excess military installations and realign the total asset inventory in order to save...


Standards and practices

JTWC adheres to the World Meteorological Organization's (WMO) rules for storm names and adheres to acknowledged guidelines for intensity of tropical cyclones and tropical storms, with the exception of using the U.S. standard of measuring sustained winds for 1 min instead of the 10 min span recommended by the WMO (see Saffir-Simpson Hurricane Scale). The JTWC is not one of the WMO designated Regional Specialized Meteorological Centres, nor one of its Tropical Cyclone Warning Centres as its main mission is to support the United States Navy and remainder of the federal government. JTWC monitors, analyzes, and forecasts tropical cyclone formation, development, and movement year round.[5] Its area of responsibility covers more than 90% of the world's tropical cyclone activity. The World Meteorological Organization (WMO) is an intergovernmental organization with a membership of 187 Member States and Territories. ... This article is about weather phenomena. ... This article is about weather phenomena. ... The Saffir-Simpson Hurricane Scale is a scale classifying most Western Hemisphere tropical cyclones that exceed the levels of tropical depression and tropical storm and thereby become hurricanes; the categories it divides hurricanes into are distinguished by the intensities of their respective sustained winds. ... These centres are responsible for the distribution of information, advisories, and warnings regarding the specific program they have a part of, agreed by consensus at the World Meteorological Organization as part of the World Weather Watch. ... These five regional warning centers are part of the World Meteorological Organization tropical cyclone programme, and act to observe, name, and forecast tropical cyclones in their respective sections of the world, supplementing the work of the main Regional Specialized Meteorological Centres. ...


Staffing

The Center is currently manned by 32 U.S. Air Force and Navy personnel. The JTWC uses several satellite systems and sensors, radar, surface and upper level synoptic data as well as atmospheric models to complete its mission.[1] Seal of the Air Force. ... USN redirects here. ...


See also

Tropical cyclones Portal

Image File history File links Download high resolution version (1000x662, 320 KB) http://eol. ... National Weather Service Logo The U.S. National Hurricane Center is the division of National Weather Services Tropical Prediction Center responsible for tracking and predicting the likely behavior of tropical depressions, tropical storms and hurricanes. ... On September 11, 1992, Hurricane Iniki caused more than USD $3 billion of damage in Hawaii. ... The Philippine Atmospheric, Geophysical and Astronomical Services Administration, PAGASA, is a Philippine national institution dedicated to provide flood and typhoon warnings, public weather forecasts and advisories, meteorological, astronomical, climatological, and other specialized information and services primarily for the protection of life and property and in support of economic, productivity and... These centres are responsible for the distribution of information, advisories, and warnings regarding the specific program they have a part of, agreed by consensus at the World Meteorological Organization as part of the World Weather Watch. ... These five regional warning centers are part of the World Meteorological Organization tropical cyclone programme, and act to observe, name, and forecast tropical cyclones in their respective sections of the world, supplementing the work of the main Regional Specialized Meteorological Centres. ...

References

  1. ^ a b Joint Typhoon Warning Center. Joint Typhoon Warning Center Mission Statement. Retrieved on 2006-12-10.
  2. ^ Naval Historical Center. Typhoons and Hurricanes: Pacific Typhoon, 18 December 1944. Retrieved on 2006-12-10.
  3. ^ Richard Anstett. Post World War II Era. Retrieved on 2006-12-10.
  4. ^ Richard Anstett. JTWC Formation, 1958-1959. Retrieved on 2006-12-10.
  5. ^ Joint Typhoon Warning Center. Joint Typhoon Warning Center Frequently Asked Questions. Retrieved on 2006-12-10.

  Results from FactBites:
 
Joint Typhoon Warning Center - Wikipedia, the free encyclopedia (445 words)
The JTWC is responsible for the issuing of tropical cyclone warnings in the North West Pacific Ocean, South Pacific Ocean and Indian Ocean for United States Department of Defense interests.
The beginning of the formation of a typhoon warning center in the Pacific occurred in the wake of Typhoon Cobra in December 18, 1944.
JTWC was originally established in 1959 at Nimitz Hill, Guam combined the efforts of the former naval centers located in Guam, Hawaii, and the Philippines with the Air Force center in Japan.
2005 Pacific typhoon season: Information from Answers.com (3487 words)
Typhoon Sanvu (Huaning) formed as a tropical depression on the morning of August 10 at 0000 UTC (0800 PHT) 320 nautical miles east-northeast of Borongan on Samar Island inside the Philippine area of responsibility.
Typhoon Nabi (Jolina) passed to the east of the island of Okinawa, Japan, and made landfall in the Kagoshima Prefecture of Japan on September 6 as a Category 2 storm.
The Joint Typhoon Warning Center initiated warning for Tropical Depression 23W at 0900 UTC November 7, north-northwest of the Micronesian island of Yap.
  More results at FactBites »

 
 

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