GOES-17 (GOES-West) Air Mass RGB and Mid-level Water Vapor (6.9 µm) images (above) showed an anomalously-deep Hurricane Force low pressure system as it approached the western Aleutian Islands and moved into the Bering Sea on 31 December 2020 (surface analyses). The peak wind gust at Shemya (PASY) was 72 knots (83 mph) at 09... Read More

GOES-16 (GOES-East) “Red” Visible (0.64 µm) images (above) revealed the formation of a mesovortex in northern Lake Superior on 28 December 2020. Mid-lake convergence — as depicted by RAP40 model surface winds — contributed to the development of this feature.ASCAT surface scatterometer winds from Metop-A at 1537 UTC (below) provided a... Read More

GOES-17 (GOES-West) True Color Red-Green-Blue (RGB) images created using Geo2Grid (above) showed the offshore transport of glacial silt across the Gulf of Alaska during the 17-18 November 2020 period. A strong pressure gradient between an inland dome of high pressure and a low pressure system off the coast of British... Read More

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 Hurricane Teddy as it rapidly intensified (ADT | SATCON ) to a Category 4 storm on 17 September 2020. The coldest cloud-top infrared brightness temperatures were in the -80 to -85ºC range.Metep-A ASCAT surface scatterometer wind... Read More