Showing posts with label TRMM SATELLITE. Show all posts
Showing posts with label TRMM SATELLITE. Show all posts

Wednesday, November 20, 2013

TROPICAL CYCLONE 04B HEADS FOR SOUTHEASTERN INDIA

Right:  NASA's TRMM satellite saw broken bands of thunderstorms with moderate rainfall (yellow, orange) in the northern and eastern quadrants of Tropical Cyclone 04B on Nov. 19, 2013 in this image overlaid on ESA's METEO-7 Satellite.  Image Credit: NRL/NASA/ESA

FROM:  NASA 
Tropical Cyclone 04B Forms in Northern Indian Ocean
Cyclone 04B

NASA's TRMM satellite saw broken bands of thunderstorms with moderate rainfall (yellow, orange) in the northern and eastern quadrants of Tropical Cyclone 04B on Nov. 19, 2013 in this image overlaid on ESA's METEO-7 Satellite.
Image Credit: NRL/NASA/ESA.

The fourth tropical cyclone of the Northern Indian Ocean season formed and is headed for landfall in a couple of days in southeastern India. NASA's TRMM satellite saw broken bands of thunderstorms with moderate rainfall in the northern and eastern quadrants of Tropical Cyclone 04B on Nov. 19.

Tropical Cyclone 04B was located just 180 nautical miles south-southeast of Visakhapatnam, India near 15.0 north and 84.5 east at 1500 UTC/10 a.m. EST on Nov. 19. 04B had maximum sustained winds near 35 knots/40 mph/64 kph and is moving to the west at 8 knots/9.2 mph/14.8 kph.

Satellite imagery showed that the low-level center is organized and there is convection (building thunderstorms) flaring around the storm's center and there is broken bands of thunderstorms around the northern quadrant of the storm. TRMM satellite data showed rainfall rates were as high as 1.2 inches/30.4 mm per hour.
A microwave image from Nov. 19 at 1058 UTC/5:58 a.m. EST showed that the cyclone is well-defined and has curved bands of thunderstorms along the western quadrant.

The Joint Typhoon Warning Center or JTWC expects 04B to track slowly west slowly intensify before making landfall in India as a tropical storm. The JTWC expects landfall between Ongole south to Nellore, both cities in the southern India state of Andhra Pradesh late on Nov. 21.

Friday, November 8, 2013

NASA'S IMAGE OF SUPER-TYPHOON HAIYAN

Right:  TRMM saw Haiyan's center was less organized after having passed over the larger Philippines island of Panay, although a large area of heavy rain (shown in ed) is now located just south of the center. Haiyan was estimated to be 145 knots (~167 mph), still equivalent to a Category 5 hurricane.
Image Credit: NASA/SSAI, Hal Pierce

FROM:  NASA, 
Haiyan (Northwestern Pacific Ocean)

Super-typhoon Haiyan, equivalent to a Category 5 hurricane on the U.S. Saffir-Simpson scale, struck the central Philippines municipality of Guiuan at the southern tip of the province of Eastern Samar early Friday morning at 20:45 UTC (4:45 am local time). NASA's TRMM satellite captured visible, microwave and infrared data on the storm.

Haiyan made landfall as an extremely powerful super typhoon, perhaps the strongest ever recorded at landfall, with sustained winds estimated at 195 mph (315 kph) by the Joint Typhoon Warning Center.  Previously, Hurricane Camille, which struck the northern Gulf Coast in 1969, held the record with 190 mph sustained winds at landfall. After striking Samar, Haiyan quickly crossed Leyte Gulf and the island of Leyte as it cut through the central Philippines.
NASA's Tropical Rainfall Measuring Mission or TRMM satellite captured an image of Haiyan just as it was crossing the island of Leyte in the central Philippines. Data was taken at 00:19 UTC (8:19 a.m. local) November 8, 2013 and showed the horizontal distribution of rain intensity within the Haiyan. Rain rates in the center of the swath were generated from the TRMM Precipitation Radar (PR), and those in the outer swath were from the TRMM Microwave Imager (TMI). The data was put together at NASA's Goddard Space Flight Center in Greenbelt, Md. where rain rates were overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS).  It showed that Haiyan still had a well-defined eye surrounded by a symmetric area of moderate rain with several rainbands wrapping in from the south. The symmetric rain area around the eye is a testament to the storm's intensity--the stronger the storm, the more the features are smeared uniformly around the center.  At the time of the image, Haiyan's sustained winds were estimated to have dropped slightly to 160 knots/~185 mph from crossing Leyte.

TRMM passed over Haiyan about 10 hours later on Nov. 8 at 10:08 UTC/5:08 a.m. EDT/6:08 p.m. Philippines local time. Haiyan was passing south of Mindoro as it was beginning to exit the Philippines.  The center was less organized after having passed over the larger Philippines island of Panay, although a large area of heavy rain (shown in red) is now located just south of the center. At the time of this image, Haiyan's intensity was estimated to be 145 knots/~167 mph, still equivalent to a Category 5 hurricane. TRMM is a joint mission between NASA and the Japanese space agency JAXA.

On Nov. 8 at 1500 UTC/11 a.m. EDT/12 a.m. Nov. 9 Philippines local time, Haiyan's maximum sustained winds had dropped to 135 knots/155.4 mph/250 kph. It slowed a bit, moving to the west at 20 knots/23.0 mph/37.0 kph. Although Haiyan was centered near 11.8 north and 120.6 east, about 170 miles south of Manila, its extent covered most of the Philippines.

So far, four fatalities have been reported as a result of the storm, but these are preliminary as communication to many areas was knocked out.  Haiyan is expected to continue moving in a general westward direction over the next 1 to 2 days before likely striking central Vietnam.

Thursday, December 6, 2012

TYPHOON BOPHA ANIMATION FROM NASA

FROM: NASA



3-D Animation of Typhoon Bopha
This 3-D animation of NASA's TRMM satellite data showed Typhoon Bopha tracking over the Philippines on Dec. 3 and moving into the Sulu Sea on Dec. 4, 2012. TRMM saw heavy rain (red) was falling at a rate of over 85 mm (~3.5 inches) per hour near the center, and powerful storms near the center were reaching heights above 16 km (~9.9 miles). Credit-SSAI-NASA, Hal Pierce

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