Thanks go out to Jason Alumbaugh from NWS Marquette, who sent the following in an email:“Previous shift here at NWS Marquette passed along interesting feature on satellite last night. Origin of the feature is approx. 49.23 N and 91.00 W (just west of CWDV – Upsala in Ontario) but eventually the... Read More

With a large dome of high pressure centered over Iowa/Missouri/Illinois (above), the stage was set for a night of strong radiational cooling across much of the Upper Midwest on 17/18 October 2018. Minimum temperatures were generally in the 20-40ºF range, with the coldest being 15ºF at Champion in the Upper Peninsula... Read More

A sequence of Infrared Window images from Terra/Aqua MODIS (11.0 µm) and NOAA-20/Suomi NPP VIIRS (11.45 µm) (above) showed Category 4 Hurricane Michael as it was making its approach toward the Florida coast during the nighttime hours preceding sunrise on 10 October 2018. The yellow pixels east of the eye on the 0724 UTC VIIRS image highlighted... Read More

* GOES-17 images shown here are preliminary and non-operational *A strong cold front (surface analyses | max/min temperatures) moved southward across the Plains states during the 03 October – 04 October 2018 period — and GOES-17 Upper-level Water Vapor (6.2 µm) images (above) revealed a distinct leeside frontal gravity wave as it propagated from southern Colorado... Read More