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Category: Microwave

Category 4 Hurricane Laura makes landfall in Louisiana

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.35 µm) images — with and without an overlay of GLM Flash Extent Density (above) showed Category 4 Hurricane Laura as it made landfall near Cameron, Louisiana around 0600 UTC on 27 August 2020. The GLM data showed intermittent lightning activity along the inner eyewall region of the hurricane.Strong outer convective bands ahead... Read More

Laura becomes a hurricane in the Gulf of Mexico

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.35 µm) images (above) showed Laura during the the 12-hour period after it intensified from a Tropical Storm to a Hurricane in the southern Gulf of Mexico at 1215 UTC on 25 August 2020. Numerous convective overshooting tops were observed, some exhibiting cloud-top infrared brightness... Read More

Heavy rainfall across Interior Alaska

An animation of Topography + GOES-17 (GOES-West) “Clean” Infrared Window (10.35 µm) images (above) showed a southward-moving band of clouds responsible for producing heavy rainfall across portions of Interior Alaska on 02 August 2020. Cloud-top infrared brightness temperatures were as cold as -58ºC (brighter shades of yellow).GOES-17 “Red” Visible (0.64 µm) images... Read More

Microwave Estimates of Total Precipitable Water

https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2020/07/MIMICTPW_LastTenDaysEPAC_end27July2020.rockanim.mp4 MIMIC TPW rocking animations from 17-27 July 2020 (and back) [click to play mp4 animation] Morphed Microwave Imagery at CIMSS (MIMIC) estimates of Total Precipitable Water are derived from microwave sensors such as AMSU and ATMS on different polar-orbiting platforms. MIRS retrievals are used to estimate Total Precipitable Water from each polar swath, and those swaths are then advected... Read More