TRMM

Tropical storm Ingrid in the southern Gulf Of Mexico was strengthening when the TRMM satellite flew over on September 13, 2013 at 2008 UTC (4:08 PM EDT). A band of very strong convective storms north of Ingrid's center was observed by TRMM's Precipitation Radar (PR) instrument to contain rain falling at the rate of over 143 mm/hr (~5.6 inches). Powerful thunderstorms in this area were also found by TRMM PR to reach heights above 16km (~9.9 miles). These "hot towers" are often a sign that a tropical cyclone will intensify.

Tropical Storm Gabrielle passed close to Bermuda on Wednesday and has now moved out of the TRMM satellite's coverage area (40N-40S). Tropical depression Gabrielle is currently moving over the open waters of the North-Atlantic toward Newfoundland and is predicted to be absorbed by a front tomorrow. A red tropical storm symbol shows the location of Gabrielle's nearly rain free center when TRMM passed above on Thursday September 12, 2013 at 2249 UTC (6:49 PM EDT).

Southwesterly wind shear has taken it's toll on hurricane Humberto. An eye was no longer distinct in data collected when the TRMM satellite passed over on September 12, 2013 at 1625 UTC (12:25 PM EDT). An analysis derived from TRMM Microwave Imager (TMI) and Precipitation Radar (PR) data shows that most of the precipitation with Humberto was then located in the northwestern quadrant. TRMM found that the most intense rain was falling at a rate of over 99mm/hr (~3.9 inches) at 22.4 North 28.7 West near Humberto's center. TRMM PR also found that the highest storm towers were reaching heights of

Tropical storm Gabrielle was at a distance of about 50km (~31 miles) to the south-southwest of Bermuda on September 11, 2013 at 0041 (September 10, 2013 8:41 PM EDT) when the TRMM satellite flew above. A rainfall analysis from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) is shown overlaid on an enhanced infrared image from the satellite's Visible and InfraRed Scanner (VIRS). A band of light to moderate rainfall extends to Bermuda from a large area of heavy rainfall in the eastern side of Gabrielle. A red tropical storm symbol shows the surface location of tropical storm Gabrielle

The TRMM satellite flew directly above tropical storm Gabrielle on September 10, 2013 at 2124 UTC (5:24 PM EDT) as the storm approached Bermuda. TRMM's Precipitation Radar (PR) data found that rain was falling at a rate of over 127mm/hr (~5 inches) in a line of intense storms southeast of Bermuda. TRMM PR also found that the tallest thunderstorms, reaching to heights above 15.5km (~9.6 miles), were located in an area close to Gabrielle's center of circulation. Click here to see a simulated 3-D (Quicktime) flyby animation over Gabrielle approaching Bermuda using TRMM PR data. Click here to see

Tropical storm Gabrielle dissipated to below tropical depression intensity on September 5, 2013. Gabrielle has regenerated and was again classified this morning as a tropical storm by the National Hurricane Center (NHC). This image shows a rainfall analysis using TRMM Microwave Imager (TMI) and Precipitation Radar (PR) data collected by two orbits of the satellite. The earlier orbit was on September 10, 2013 at 0136 UTC and the second orbit occurred at 0313 UTC. The heaviest rain, falling at a rate of 54mm/hr (~2.1 inches), was found by TRMM PR in a feeder band spiraling into Gabrielle from

The National Hurricane Center (NHC) upgraded a low pressure center south of Puerto Rico to tropical depression number seven on September 4, 2013 at 2100 UTC (5:00 PM EDT). The tropical depression was then again upgraded to tropical storm Gabrielle on September 5, 2013 at 0300 UTC (September 4, 2013 11 PM EDT). Gabrielle was subsequently downgraded today to a tropical depression at 1500 UTC (11 AM EDT). The TRMM satellite's Microwave Imager (TMI) had a fairly good look at tropical storm Gabrielle very early this morning at 0614 UTC (2:14 AM EDT). TRMM's TMI found rain falling at a rate of over

The TRMM satellite had an excellent daytime view of strong tropical storm Humberto on September 10, 2012 at 1636 UTC (~12:36 PM EDT). Rainfall derived from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data are shown overlaid on a combination visible/infrared image from TRMM's Visible and InfraRed Scanner (VIRS). TRMM PR found that the heaviest rainfall associated with Humberto was not near the center of circulation but in convective storms west of the storm. Tropical Storm Humberto's highest winds were about 55kts (~63 mph) at the time of this TRMM pass and the National Hurricane

As predicted by the National Hurricane Center (NHC) tropical depression Nine formed with a strong tropical wave that moved from the African coast to an area south of the Cape Verde Islands. The low pressure center was designated tropical depression Nine at 2100 UTC (5PM EDT). The TRMM satellite flew directly above the developing tropical depression earlier at 1651 UTC (12:51 PM EDT). This TRMM pass found rain falling at a rate of over 101mm/hr (~4 inches) near the center of the developing tropical depression. TRMM's PR instrument was used to show a 3-D view of TD9. Radar reflectivity values

A low pressure center associated with a strong tropical wave near the African coast of Senegal may become a tropical depression south of the Cape Verde islands in the next five days. The TRMM satellite collected data used in the image above when it flew over this tropical disturbance on September 7, 2013 at 0257 UTC.