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Hurricane Season 2008: Tropical Cyclone Rashmi (Indian Ocean)
 
Oct. 28, 2008

Bangladesh Cleaning Up After Cyclone Rashmi's Swath

Quikscat image of Rashmi from October 28, 2008> Larger image
Credit: NASA JPL
Tropical Storm Rashmi swept through Bangladesh leaving behind lots of downed trees, damaged crops and houses and power outages in several districts.

The Daily Star.net reported damages and power outages in Faridpur, Madaripur, Chandpur, Dhaka and adjoining districts. When Rashmi came ashore the first areas it hit were the Barguna, Patuakhali, Barisal, Bhola, Pirojpur, Jhalakathi, Bagerhat, Khulna and Satkhira districts.

There were numerous reports of fishermen missing, capsized boats, fish enclosures damaged, and livestock killed. One report from Reuters indicated that at least 1,000 head of cattle died on off-shore islands and coastal areas that experienced the storm surge of over 6 feet.

The remnants of Rashmi exited through Netrakona border in the evening hours of Oct. 27. The Netrokona district is situated in the northern part of Bangladesh near the Himalayan border.

QuikSCAT Peering Through Clouds at Rashmi's Winds

NASA's Quick Scatterometer satellite (QuikScat) has been watching Rashmi's winds as they swirl inside its clouds by using microwaves to peer into them. This image was captured on Oct. 26 at 12:46 UTC, or 8:46 a.m. EDT as its center was nearing the coast of Bangladesh.

QuikScat can determine the speed of the rotating winds. This image from QuikScat shows Hanna's wind speeds in different colors and wind direction are indicated by small barbs. White barbs point to areas of heavy rain. The highest wind speeds, are shown in purple, which indicate winds over 40 knots (46 mph).

Cloudsat image of Rashmi from Oct. 28, 2008> Larger image
Credit: NASA/JPL/Colorado State University/Naval Research Laboratory-Monterey
CloudSat Looks at Rashmi Sliced in Half

NASA's CloudSat satellite's Cloud Profiling Radar captured a sideways look across Rashmi on October 26 at 7:30 UTC (3:30 a.m. EDT).

The top image is from the MTSAT satellite at the same time. The image was supplied through the U.S. Naval Research Laboratory. The Multi-functional Transport Satellite (MTSAT) series fulfills a meteorological function for the Japan Meteorological Agency and an aviation control function for the Civil Aviation Bureau of the Ministry of Land, Infrastructure and Transport.

The image on the bottom is from NASA's CloudSat satellite. The red line through the MTSAT satellite image shows the vertical cross section of radar, basically what Rashmi's clouds looked like sideways. The colors indicate the intensity of the reflected radar energy. The top of Rashmi's clouds are over 14 kilometers or almost 9 miles high.

The white spaces between the three areas of clouds indicate open air (a break in the clouds). Rashmi's northeast quadrant was already weakening, so the storm wasn't a uniform circle all the way around, thus the open space.

The blue areas along the top of the clouds indicate cloud ice. Where the solid line (the ground or sea surface) along the bottom of the panel disappears is an area of heavy precipitation. It is likely that in the area the precipitation rate exceeds 30mm/hr (1.18 inches/hour) based on previous studies. Text credit: Rob Gutro/Goddard Space Flight Center


Oct. 27, 2008

Tropical Cyclone Rashmi Makes Landfall in Bangladesh

Rashmi makes landfall in Bangladesh Credit: NOAA/NASA GOES Project
> Larger image
The fourth tropical cyclone in the Indian Ocean basin made landfall late on October 26 in southern Bangladesh.

Tropical Storm Rashmi came ashore bringing heavy rains and winds of 83 kilometers per hour (52 mph), according to the U.S. Navy Joint Typhoon Warning Center. Reuters news services reported 2 deaths and many downed trees and power lines. BBC News also reported thousands of homes were damaged from Rashmi.

When Rashmi came ashore with 52 mph sustained winds, it was accompanied by a 2 meter (6.5 feet) storm surge above normal tide levels. That brought flooding to low lying coastal areas and some off-shore islands.

Cyclone Rashmi formed in the Bay of Bengal during the week of October 19. Rashmi has been raining on Bangladesh since Friday, Oct. 24 before finally making landfall two days later. After landfall making near Patharghata, a town in southwestern Bangladesh, it continued to move inland in a north-northeasterly direction, and weakening.

On Oct. 27 at 3:00 Zulu Time (Oct. 26 at 11:00 p.m. EDT), Rashmi had sustained winds near 40 knots (46 mph) and was speeding north-northeast near 21 knots (24 mph). At that time it was located 110 nautical miles east-northeast of Kolkata, India, near 23.8 degrees north latitude and 90.4 degrees east longitude. Rashmi is expected to dissipate late on October 27 inland.

NASA's TRMM Satellite Analyzes Rashmi's Scattered Rainfall

The image above was made from data captured by the Tropical Rainfall Measuring Mission (TRMM) satellite on October 26 at 23:06 Zulu Time (7:06 p.m. EDT) as it passed over the dissipating and scattered rainfall of Tropical Cyclone Rashmi from space. This TRMM image shows the horizontal pattern of rain intensity within Rashmi. The yellow, green and red areas indicate rainfall between 20 and 40 millimeters (.78 to 1.57 inches) per hour. The red area is considered moderate rainfall.

For more information about how TRMM looks at rainfall, visit NASA's TRMM website at: http://trmm.gsfc.nasa.gov/ . TRMM is a joint mission between NASA and the Japanese space agency JAXA.

Text credit: Rob Gutro, NASA's Goddard Space Flight Center