Cold air over the Great Lakes (see the plot of 850-mb temperature from RAOB stations at 1200 UTC below; note the similarity in temperatures and wind speeds over the Great Lakes states) means Lake Effect Snow. The animation above (source) shows snow bands over western lower Michigan and also downwind... Read More
GOES-19 (Preliminary/Non-operational) Day Cloud Phase Distinction RGB images (above) — created using Geo2Grid — displayed supercooled “lake effect” clouds (shades of white) streaming southeast off Lake Sakakawea in northwestern North Dakota on 25 November 2024. A smaller cloud plume was also seen streaming southeast off Devils Lake in northeastern North Dakota. Existing snow cover appeared as shades of green... Read More
GOES-West imagery centered over the Samoan Islands, shown above in an animation, shows a region of rich moisture surrounding those islands (purple in the enhancement, which suggests values or 2-2.2″), but the islands themselves are within a dry pocket (TPW values closer to 1.7″, orange/rust in the enhancement used). Total... Read More
The distinct hot thermal signature (black to yellow to red pixels) of a new fissure eruption between Stóra-Skógfell and Sýlingarfell on the Reykjanes Peninsula in southwestern Iceland was apparent in 10-minute Full Disk scan GOES-16 (GOES-East) Shortwave Infrared (3.9 µm) images during the 20-24 November 2024 period (above). Station identifier BIRK is Reykjavik Airport, and... Read More
