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IMERG rainfall from the Pakistan Floods 2020
In the last week of August 2020, Pakistan's largest city, Karachi, received over 8 inches of rainfall according to NASA's IMERG dataset, causing destructive flooding in the region. The amount of rain that fell that week is roughly equivalent to the amount that Karachi typically receives in an entire year, based on IMERG's 19-year global climatology. In a typical year, most of Karachi's rain will fall in July and August, but the rainfall during the week of August 23rd was unusually heavy. The top panel of the three panels in this image shows the depth of the 7-day rainfall accumulation in
IMERG Rainfall Totals from Hurricanes Marco and Laura
The northern Gulf Coast, specifically Louisiana, saw two tropical cyclones make landfall in the same week just days apart. The two systems, however, could not have been more different when they arrived. Despite forming a day later, Marco was the first system to make landfall on the Gulf Coast. Marco originated from a tropical easterly wave that was moving from the central to the western Caribbean. After becoming a tropical depression (TD) on the 20th of August, TD #14 turned northwestward the following day as it approached the coast of Central America and moved into the northwest Caribbean
GPM Overpass of Hurricane Laura 8/27/20
After crossing western Cuba, Tropical Storm Laura emerged into the Gulf of Mexico where warm water, low wind shear and a moist environment made conditions ideal for intensification. As it made its way through the Gulf of Mexico Laura strengthened - from a category 1 hurricane with sustained winds of 75 mph on the morning of Tuesday August 25th, to a powerful category 4 storm, with sustained winds of 150 mph on the evening of Wednesday August 26th - an increase of 75 mph in just 36 hours. At this point Laura was nearing the coast of western Louisiana, and made landfall near Cameron, Louisiana
GPM Overpass of Hurricane Laura 8/26/20 10:00pm CT
Hurricane Laura began as a tropical depression on August 21st near the U.S. Virgin Islands, and over the next several days rapidly intensified to a dangerous category 4 hurricane at it moved towards the U.S. Gulf Coast. Laura made landfall as strong category 4 hurricane near Cameron, Louisiana shortly after midnight on August 27, 2020, bringing extreme rainfall, storm surge, and winds up to 150 mph. The NASA / JAXA GPM Core Observatory satellite flew over Hurricane Laura shortly before it made landfall at 10:00pm CT on Wednesday, August 26th, then again at 7:42am CT on Thursday, August 27th
Hurricane Laura on August 27, 2020
Update on August 28, 2020: During its approach to Louisiana, Hurricane Laura dramatically intensified from Category 2 to 4 (105 mph to 150 mph) between at 1AM and 7PM Central Time (CDT) on August 26, 2020. In the updated movie below, the precipitation falling from Laura is shown through 10:30PM CDT, August 27, as estimated by NASA's IMERG algorithm. To open the animation in a separate window, click here. On August 26, Laura became the first North Atlantic hurricane to reach "major hurricane" status this year, meaning that it reached category 3 on the Saffir-Simpson hurricane-intensity scale

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