tropical cyclones

Tropical Storm 27W Forming

Tropical Cyclones can form in the western Pacific Ocean at any time during the year but they occur most frequently during the months of June through November so tropical storm 27W is a little unusual. The TRMM satellite saw what was then tropical depression 27W on 13 December 2011 at 1533 UTC. It was upgraded to a Tropical storm by the Joint Typhoon Warning Center (JTWC) the next day at 0900 UTC. TRMM's Microwave Imager (TMI) shows that moderate rainfall was located in clusters of strong convective storms within the developing tropical cyclone. Tropical storm 27W has been predicted to

Another Possible Tropical Cyclone Approaches Oman

On November 2011 at 1541 UTC the TRMM satellite passed over another stormy area heading toward Oman from the Arabian sea . Another tropical cyclone may be forming in this area less than a week after deadly tropical storm Keila hit Oman. A rainfall analysis from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) is shown in the image above. Rainfall derived from PR data, shown in a lighter shade, reveals that an area of extremely heavy rainfall was located in the center of this stormy area. TRMM's PR data were again used to show the 3-D structure of this stormy area. Some of these very

Potential Tropical Cyclone Development In The Caribbean

The TRMM satellite passed over an area of disturbed weather in the southern Caribbean Sea between Nicaragua and Jamaica on 21 October 2011 at 0929 UTC. The National Hurricane Center (NHC) has given this area a high chance (60%) of becoming a tropical cyclone over the weekend. Data from TRMM's Precipitation Radar (PR) instrument were used to make the 3-D image above that shows that a cluster of strong convective storms in the southern part of this area were higher than 15 km (~9.3 miles). The heavy rainfall in this area of deep convection releases heat, known as latent heating, into these

TRMM Used to Examine the Bay of Bengal Tropical Cyclone

The accurate measurement of the tropical rainfall around the globe is one of the main objectives of the TRMM satellite. The TRMM satellite has also proven useful for global monitoring of tropical cyclone development. The images above were made from data received by the TRMM satellite when it passed over tropical cyclone 02B in the eastern Bay Of Bengal on 19 October 2011 at 2340 UTC. The image above shows a rainfall analysis that was made from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data. It shows that moderate to heavy rainfall associated with 02B was extending

TRMM Views Area Of Possible Tropical Cyclone Development

The TRMM satellite flew over an area of disturbed weather in the southeastern Gulf Of Mexico on 17 October 2011 at 1310 UTC (9:10 AM EDT). The National Hurricane Center (NHC) has given this area of low pressure a medium chance (40%) of becoming a tropical cyclone during the next 48 hours. A rainfall analysis from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data shows that a large area of rainfall associated with this disturbance extends from the northern tip of Mexico's Yucatan Peninsula to the southwest coast of Florida. Several stormy areas within this disturbed weather are

Tropical Cyclones bring Heavy Rains to the Far East

Over a period of 10 days, a series of three tropical cyclones brought heavy rains and devastating flooding to parts of the Philippines, southern China and Vietnam. The first of these storms to form--and the most devastating--was Typhoon Nesat, which began in the central Philippine Sea. This storm intensified as it tracked westward reaching Category 3 intensity just before making landfall on the northern Philippines island of Luzon early on the morning of the 27th of September. It brought heavy rains and widespread flooding to the region and was initially blamed for 56 fatalities in the

Two Tropical Cyclones Near Japan

The TRMM satellite flew over two tropical cyclones near Japan on 18 September 2011. Typhoon Sonca, shown above, was seen off the east coast of the main Japanese island of Honshu at 1805 UTC while moving away from Japan toward the north-east. Sonca was still a powerful typhoon with wind speeds of about 85 knots (~98 mph) at that time but Sonca weakened to a tropical storm on 19 September 2011 while moving over the colder waters of the northern Pacific Ocean to the north-east of Japan. TRMM saw tropical storm Roke a little later at 1840 UTC. TRMM Precipitation Radar (PR) data shows that Roke

TRMM Sees TD13 Forming

The TRMM satellite viewed the thirteenth tropical depression of the Atlantic hurricane season on Thursday 1 September 2011 at 1309 UTC (9:09 AM EDT) when it was still forming. The National Hurricane Center (NHC) has predicted that TD13 will intensify and become a tropical storm (Lee) today. The tropical storm is predicted by the NHC to slowly move toward the northwest and cause heavy rainfall over the states along the northern Gulf Of Mexico's coast. One area of heavy rainfall in the middle of the Gulf Of Mexico was in the center of the area viewed by TRMM's Precipitation Radar (PR). Some of
TRMM image of hurricane Irene intesifying as it nears the Bahamas
UPDATE: Monday, August 29th, 2011 Irene Drenches Northeastern United States UPDATE: Friday, August 26th, 2011 Irene Passes Through the Bahamas, Heads Towards Cape Hatterus Wednesday, August 24th, 2011 After becoming a small hurricane while passing over Puerto Rico, Irene re-emerged over the warm, open waters of the western Atlantic northwest of the Dominican Republic on the morning of August 22nd. The storm quickly showed signs of intensifying as deep convective towers arose near the center of Irene, releasing heat into the core of the system. In response, Irene's central pressure fell and...