While parts of the East Coast and New England are still recovering from Hurricane Irene, a new storm is brewing in the Atlantic, Tropical Storm Katia. Katia began as an area of low pressure that had moved away from the coast of Africa south of the Cape Verde Islands in the central eastern Atlantic. This area of low pressure became the twelfth tropical depression of the season (TD #12) early on the morning of August 29th about 640 km (~400 miles) south-southwest of the Cape Verde Islands and about 1400 km (~870 miles) off the coast of Africa. Storms forming in this region are known as "Cape

The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center monitors rainfall over the global tropics. The analysis above shows MPA rainfall totals for the period from 20-29 August 2011. Hurricane Irene was dropping tremendous amounts of rainfall over the eastern United States during a part of this period and caused flooding from the Carolinas to the northeastern states. The heaviest rainfall totals of over 225 mm (~8.9 inches) were located in North Carolina where Irene first made landfall in the United States. Very heavy rainfall

The TRMM satellite had another very good daytime view of hurricane Irene on 27 August 2011 1750 UTC (1:50 PM EDT). The rainfall analysis shown on the right was derived from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data. It clearly shows the location of Irene's eye and the intense rainfall falling over Cape Hatteras east of the eye. Click here to see this image in Google Earth (kml).

The TRMM satellite saw hurricane Irene again on 26 August 2011 at 2023 UTC (4:23 PM EDT) when winds had weakened to about 85 kts (~98mph). This TRMM pass showed no clear eye but bands of heavy rainfall north of the center. Irene was predicted by the NHC to weaken a little more before coming ashore in North Carolina. See the 26 August 2011 2023 UTC image in Google Earth (kml).

On the afternoon of Tuesday, August 23rd, 2011, a 5.8 magnitude earthquake shook the Building 29 clean room which houses the GPM spacecraft. The following day, the team carefully inspected the I&T area and spacecraft. There was no visible damage or debris, and post-earthquake inspections identified no problems.

Hurricane Irene was seen affecting the Bahamas twice during the daytime by the TRMM satellite on Thursday 25 August 2011 at 1624 UTC ( 12:24 PM EDT) and at 2118 UTC ( 5:17 PM EDT). A rainfall analysis from TRMM's Microwave Imager (TMI) data shows that Irene's eye had moved to the north of the islands of the Bahamas by the second pass. TRMM' Precipitation Radar (PR) data shows that at this time Irene contained bands of intense thunderstorms dropping rain at the rate of over 50 mm/hr (~2 inches) north of the hurricane's eye. Irene weakened slightly today (Friday) from a category 3 to a strong

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 winds intensified, making it a Category 2 storm on the Saffir-Simpson hurricane intensity scale with sustained winds reported at 85 knots (~100 mph) by the National Hurricane Center by the end of the day

It's been a busy season so far in terms of tropical storms with seven named storms already in the Atlantic basin; however, none of them have had a very large impact as they have either been small, short-lived or remained at sea and none of them have intensified into a hurricane until now. Irene, which originated from a tropical wave that propagated off the west coast of Africa, became the 8th named storm of the season as it approached the Lesser Antilles on the 20th of August and the first hurricane of the season as it was passing over Puerto Rico on the morning of the 22nd. Now back over open

Tropical storm Harvey is dissipating inland over southern Mexico while hurricane Irene is drenching the island of Puerto Rico. Harvey's track is shown on the rainfall analysis above with appropriate tropical cyclone symbols in white. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (TMPA) at the NASA Goddard Space Flight Center provides quantitative rainfall estimates over the global tropics. An analysis of TMPA rainfall totals for the period August 15-22, 2011 is shown for the area transited by tropical storm Harvey. The highest rainfall total associated with Harvey was

The National Hurricane Center (NHC) issued it's first advisory for tropical storm Irene on 20 August 2011 at 2300 UTC (7 PM EDT). The TRMM satellite passed over the intensifying storm a little later on 22 August 2011 at 0024 UTC (8:24 PM EDT). Data collected with this orbit showed that Irene contained numerous powerful thunderstorms with TRMM's Precipitation Radar (PR) revealing that some thunderstorm towers near the center of the storm were reaching to heights above 15 km (~9.3 miles). The NHC has forecasted that Irene will become a hurricane within 36 hours while moving in a west