As West Pacific Tropical Depression 02W — previously discussed in this blog post — intensified to become Tropical Storm Mawar at 1200 UTC on 20 May 2023, 2.5-minute rapid scan JMA Himawari-9 “Clean” Infrared Window (10.4 µm) images (above) showed pulses of cold overshooting tops that frequently exhibited infrared brightness temperatures in the -90... Read More
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
Visible imagery from near sunset on 16 May 2023, above, shows multiple horizontal cloud lines north of the islands of Oahu and Kauai. Each of the clouds lines is associated with a local modulation of the wind field in the SAR Wind field. The wind /Normalized Radar Cross Section fields are also available online... 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
