As discussed in this blog post, heavy rainfall had been occurring across the Samoan Islands on 14 December 2023. The South Pacific Convergence Zone (SPCZ) remained in the vicinity of the Samoan Islands on 16 December (surface analyses) — and 1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Infrared images (above) showed another round of deep convection that produced heavy... Read More
GOES-18 (GOES-West) Nighttime Microphysics RGB and daytime True Color RGB images from the CSPP GeoSphere site (above) displayed the cyclonic circulation of an actinoform cloud feature as it moved westward toward Hawai`i on 03 July 2023.A closer view using GOES-18 “Red” Visible (0.64 µm) and Day Cloud Phase Distinction RGB images (below) showed the actinoform cloud as it... Read More
Southern Wisconsin experienced the convergence of 3 cooling mechanisms during the afternoon hours of 16 May 2023: (1) the arrival of a dense band of smoke aloft — transported southward from wildfires in Alberta and Saskatchewan — which reduced incoming solar radiation, (2) a southward-moving cold front and (3) the inland surge... Read More
1-minute Mesoscale Domain Sector GOES-16 (GOES-East) Visible/Infrared Sandwich RGB images (above) showed thunderstorms that produced a few clusters of large hail (up to 3.00 inches in diameter: SPC Storm Reports) in the St. Louis, Missouri area on 13 May 2023.There were also several reports of heavy rainfall — GOES-16 Visible/Infrared Sandwich RGB images at 1956 UTC UTC, 2100 UTC and 2124 UTC... Read More
