GPM

PPS will replace GPM Ka/Ku L1B products from JAXA and will reprocess the affected data including Level 2 and 3 data. If you have already obtained products with orbit#24203 from our archive or through a standing order, etc., please discard and use the replacement products when available. PPS will replace the following GPM Ka/Ku L1B data: GPMCOR_KAR_1806020955_1128_024203_1BS_DAB_05B.h5 GPMCOR_KUR_1806020955_1128_024203_1BS_DUB_05B.h5 PPS will reprocess the affected L2-3 downstream products. If you have obtained any of these products from our archive or through a Standing Order, etc., please

Alberto formed out of a broad area of low pressure at the surface that was located over and around the Yucatan Peninsula. Because the area of low pressure was under the influence of a nearby upper-level trough, Alberto was designated as a subtropical storm by the National Hurricane Center (NHC) on the morning of Friday May 25th, which is rather unusual as most subtropical storms form at higher latitudes. The storm initially formed just east of the Yucatan Peninsula. A large subtropical ridge over the southwestern Atlantic steered Alberto on a northward track, and the storm brushed the far

At 10:00 AM CDT today the National Hurricane Center (NHC) upgraded low pressure center (90L) to Subtropical Storm Alberto. Alberto moved over the waters of the northwestern Caribbean Sea. Alberto is expected to bring heavy rainfall and flash flooding to the northeastern Yucatan, western Cuba and Florida over the Memorial Day weekend. The GPM core observatory satellite passed above the Yucatan Peninsula on May 24, 2018 a 11:19 PM EDT (May 25, 2018 at 0319 UTC). With this pass GPM saw areas of heavy precipitation within the western Caribbean and in the Gulf Of Mexico west of Cuba. GPM's Dual

The second tropical cyclone in less than a week has formed in the western Arabian Sea early on May 22, 2018. This tropical cyclone called MEKUNU is intensifying as it heads toward Oman. The Joint Typhoon Warning Center (JTWC) predicts that MEKUNU will have winds of about 85 kts (98 mph) when it hits southwestern Oman in about three days. This will make it the equivalent of a category two hurricane on the Saffir-Simpson hurricane wind scale. Tropical cyclone MEKUNU follows on the heels of destructive and deadly tropical cyclone SAGAR that just made landfall over northwestern Somalia a few days

For close to two weeks the combination of a nearly stationary front and tropical moisture caused almost continuous precipitation over much of the Mid-Atlantic. Record amounts of rain fell over the eastern United States with over a foot of rain reported in some parts of the Mid-Atlantic. The excessive rain led to flooding along several rivers including the Potomac river. This image shows anomalous rainfall for the period from May 11-20, 2018. This analysis used climatology data that were based on measurements by the Tropical Rainfall Measuring Mission (TRMM) satellite from 1997- 2015. The TRMM

PPS received replacement GPM Ka/Ku L1B products from JAXA and will reprocess the affected data including Level 2 and 3 data. If you have already obtained products with orbit#23969 from our archive or through a standing order, etc., please discard and use the replacement products. PPS has replaced the following GPM Ka/Ku L1B data: GPMCOR_KUR_1805180849_1022_023969_1BS_DUB_05A.h5 GPMCOR_KAR_1805180849_1022_023969_1BS_DAB_05A.h5 PPS will reprocess the following L2-3 downstream products: 2AKa 2A.GPM.Ka.V7-20170308.20180518-S084951-E102226.023969.V05A.HDF5 2AKu 2A.GPM.Ku.V7-20170308.20180518

Last week Tasmanian's were evacuated, businesses were flooded and cars washed away as extreme rainfall accompanied a strong cold front and a low pressure system that spawned violent storms. Hobart city, located in southeastern Tasmania, received record breaking rainfall of more than 100 mm (3.93 inches) in a single day. A strong pressure gradient developed between the complex low pressure center over Tasmania and high pressure that was moving eastward over the Great Australian Bight (Southern Ocean). This strong pressure gradient resulted in destructively high south-easterly winds over

The STORM Swath-Based Analysis Tool ( https://storm.pps.eosdis.nasa.gov/storm/Analysis.jsp) is a better way to explore and order targeted Level 2 data. Select one or more instruments from a list going back to the beginning of the TRMM mission, provide a date range, and input a geographic region of interest. Once you hit "Get Granules for Chart," a graph will appear and data points will begin to display. These points represent the mean precipitation rate value for all of the pixels for that orbit of that instrument over that geographic region. Once the graph loading is paused or complete

This past week, something rather unusual happened off the coast of Chile: a rare subtropical storm formed in the Southeast Pacific Ocean. Cyclone season is winding down in the Southwest Pacific near Australia where it is common for several tropical storms to form every year, but in the Southeast Pacific tropical storms are unheard of. This particular storm is a subtropical storm, which is a sort of a hybrid between a tropical cyclone like a hurricane, which gets it energy primarily from the condensation of humid air that forms over warm ocean waters, and an extratropical storm, which has a

The Eastern Pacific hurricane season officially starts on May 15, 2018. A low pressure center located well to the southwest of the Baja California Peninsula may develop into this area's first tropical cyclone of 2018. Low vertical wind shear and warm ocean temperatures in the vicinity of the low are providing favorable conditions for this low's development into a tropical cyclone. If it develops it will be called Aletta. The GPM core observatory satellite passed over the center of the most intense convective storms in this potential tropical cyclone. Rainfall data collected by GPM's satellite