The GPM core observatory satellite had a good early morning look at newly formed tropical storm Ulika on September 27, 2016 at 5:26 AM HST (1526 UTC). Ulika was located in the central Pacific Ocean less than 975 nautical miles east-southeast of Hilo, Hawaii. GPM found that Ulika contained some very powerful convective storms and a well defined center of circulation. GPM's Dual-Frequency Precipitation Radar (DPR) discovered that some strong convective storms inside the tropical storm were dropping precipitation at a rate of over 187 mm (7.4 inches) per hour. A GPM radar slice through the center

Three typhoons have battered Taiwan in the past few weeks. Super Typhoon MERANTI, the strongest typhoon of the year, caused havoc as it passed to the south of Taiwan on September 14, 2016. Typhoon Malakas clipped northeastern Taiwan a few days later. Typhoon Megi has now caused injuries, deaths and destruction as it passes over northeastern Taiwan. The GPM core observatory satellite passed over on September 26, 2016 at 2231 UTC when typhoon Megi was approaching Taiwan from the Philippine Sea. Megi was intensifying with maximum sustained wind speeds estimated at 100kts (115 mph). The typhoon's

We have discovered that the gauge analysis was erroneously omitted from the "production" 3B42/43 products starting with January 2016 due to issues with handling a change of data format. Thus, the production 3B42/43 are being re-computed. This does not affect the TMPA-RT suite of products, since no month-to-month gauge data are used. Note this issue also affects the current Version 3 IMERG Final Run products for January 2016. They are being recomputed as well. The current Version 3 IMERG Early and Late Runs are not affected. An update will be provided here when the corrected products are ready.

UPDATE 9/27/16: January 2016 IMERG has been regenerated and posted. This was necessary due to an error that omitted the gauge analysis in the Final products. Also, 3B42/3B43 have been recomputed and posted. Let me know if you have any further questions. --- PPS has removed the January 2016 GPM IMERG and January through June 2016 3B42/3B43 TMPA products from our ftp archive: ftp://arthurhou.pps.eosdis.nasa.gov/ and STORM: https://storm.pps.eosdis.nasa.gov/storm/ The GPM science team discovered that the IMERG final products for Jan 2016 and the Jan-Jun 2016 TMPA 3B42/3B43 products for which we

Tropical Depression Karl's strength has fluctuated. Karl formed on September 14th in the eastern Atlantic, strengthened to tropical storm intensity on September 16th and was downgraded to a tropical depression yesterday. The GPM core observatory satellite had an outstanding view of Karl when it passed above today at 1201 UTC (8:01 AM EDT). Data collected by GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments uncovered heavy rainfall inside storms within the tropical depression. DPR found that powerful convective storms near Karl's center of circulation were