The Joint Typhoon Warning Center has issued a Tropical Cyclone Formation Advisory (TCFA) for disturbed weather located southwest of Chuuk in the tropical Pacific. MIMIC Total Precipitable Water fields, above, show the development of a circulation near 150oE Longitude and 5oN Latitude between 0000 UTC 17 May and 0000 UTC 19 May. At present the system... Read More
TROPICS (Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of SmallSats) satellite observations include microwave data at 12 different frequencies between 91.6 and 204.8 GHz. (Click here for a Satellite Book Club presentation on TROPICS). A TROPICS launch occurred from New Zealand in early May (link), boosting two satellites into orbit; a second launch is pending. In addition, TROPICS Pathfinder... Read More
The animations above show thundershower development over the Big Island of Hawai’i on 11 May 2023. LightningCast Probabilities correctly diagnosed the increasing lightning threat, with elevated probabilities (50%) occurring before the first observed Geostationary Lightning Mapper (GLM) flash at 2136 UTC. LightningCast gave situational awareness on this day. (The images... Read More
JMA Himawari-9 Infrared Window (10.4 µm) images of Cyclone Mocha in the Bay of Bengal on 13 May 2023 (above) displayed cold clouds surrounding an eye that gradually became more cloud-cleared — with isolated cloud-top infrared brightness temperature values of -90ºC and colder (yellow pixels embedded within dark purple regions).... Read More
