Typhoon Jewalat Batters Japan

The TRMM satellite had an excellent look at typhoon Jelawat on September 29, 2012 at 1944 UTC. Jelawat had already battered Okinawa with 75kt (~87mph) winds and was headed for the main islands of Japan. An analysis of rainfall from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments is shown overlaid on an enhanced infrared image from TRMM's Visible and InfraRed Scanner (VIRS). Rain is shown falling at a rate of over 90mm/hr (~3.5 inches) in strong feeder bands northwest of Jelawat's center of circulation. Jelawat was already causing light to moderate rainfall on the

Weakening Typhoon Prapiroon

The TRMM satellite again flew above typhoon Prapiroon in the western Pacific Ocean on October 15, 2012 at 0632 UTC. Prapiroon's sustained wind speeds had dropped to 70 kts (~81 mph) with a large and ragged eye being it's dominant feature. TRMM's Microwave Imager (TMI) data indicated that the most intense rain bands south of Prapiroon's eye were dropping rain at a rate of about 30-40 mm/hr (~1.2 to 1.6 inches).

TRMM Sees Prapiroon Near Japan

The TRMM satellite recently had good views of tropical storm Prapiroon when it was passing east of Japan. The TRMM satellite captured data on October 18, 2012 at 0845UTC and again at 1019 UTC. TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data show that rain associated with Prapiroon was falling at a rate of over 75mm/hr (~3 inches) in a feeder band northwest of the center of circulation. TRMM PR found radar reflectivity values above 50.770 dBz in that area. Some of the rainfall over Japan was being caused by a frontal system that was interacting with tropical storm Prapiroon
Map of tracking hurricane Irene
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GPM: Hurricanes Beyond the Tropics

Submitted by JacobAdmin on Tue, 08/28/2012
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On August 28, 2011, Tropical Storm Irene hit Vermont, causing widespread damage and the worst flooding in 75 years. Irene's impact in New England shows that tropical cyclones can greatly affect regions outside the view of TRMM. The Global Precipitation Measurement (GPM) mission will build upon TRMM's legacy by examining a larger swath of Earth with more sensitive instruments.


Typhoon Haikui Heading Toward China

The TRMM satellite had a good view of Typhoon Haikui on August 6, 2012 at 1857 UTC as it was moving toward China. At that time Haikui was a category one typhoon on the Saffir-Simpson hurricane intensity scale with wind speeds of 65 kts (~75 mph). Data from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments show bands of moderate to heavy rainfall around Haikui's large eye. TRMM PR data were also used to show a 3-D cross section through Haikui's eye. This view shows that intense rainfall (45 dBZ) was occurring in the eastern side of Haikui's eye. Typhoon Haikui weakened

Intensifying Typhoon Guchol Viewed By TRMM

Typhoon Guchol in the western Pacific Ocean is becoming increasingly more powerful and was seen by the TRMM satellite on Friday June 15, 2012 at 0443 UTC. The center of the intensifying typhoon was covered very well by TRMM's Precipitation Radar (PR) data. TRMM PR showed that very heavy rainfall was occurring in the eastern side of Guchol's eye wall. This 3-D image (looking toward the east) from TRMM PR data reveals that towering storms in the eastern side of Guchol's eye were reaching the amazing height of almost 17km (~10.56 miles). Intense rainfall in Guchol's eye wall was returning values

Pakhar Becomes a Typhoon

Tropical storm Pakhar was upgraded to typhoon intensity shortly after the TRMM satellite passed over head again on 29 March 2012 at 2114 UTC. An analysis of TRMM Microwave Imager (TMI) and Precipitation Radar (PR) rainfall are shown overlaid on an enhanced infrared image from the Visible and InfraRed Scanner (VIRS) instrument. TMI rainfall data indicated that the largest area of precipitation was located to the southwest of the storm's center. PR data shows that there were scattered powerful storms around Pakhar dropping rainfall at a rate of over 50mm/hr (~2 inches). Pakhar's is forecast to

Typhoon Pakhar Moving Toward Vietnam

The TRMM satellite flew almost directly over a newly formed tropical storm in the South China Sea on 29 March 2012 at 1122 UTC. Pakhar is the first typhoon to form in the northern hemisphere this year. The intensifying storm had wind speeds of about 45 kts (~52 mph) and was moving toward the west-northwest when viewed by this TRMM pass. Pakhar is predicted to be stronger with wind speeds of at least 60 kts (~69 mph) when it crosses into southeastern Vietnam on 31 March 2012. The rainfall analysis above used data from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments. It

Tropical Storm Nalgae Weakens

was a tropical storm and weakening rapidly when the TRMM satellite saw it on 4 October 2011 at 0624 UTC. This rainfall analysis from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) shows only scattered areas of light to moderate rainfall were present with Nalgae as it moved into the Gulf Of Tonkin west of Hainan. Click here to see earlier TRMM information about Nalgae.