GOES-18 Airmass RGB imagery, above, from 1500-1820 UTC on 28 October, show light snow over much of central Alaska as a storm system moves into the state. Temperatures at 500 mb, below, derived from NUCAPS profiles (as shown in the toggle), show a tongue of warmer air positioned with the cloud feature (shown as white) in... Read More

MIMIC TPW fields for the first half of 22 October (at which point the data feed from NOAA/NESDIS was interrupted) shows the Samoan Islands within an isolated region of relatively dry air with moisture moving in from the east. GFS fields showing the Galvez Davison Index (GDI) that is sometimes... Read More

Parts of northern Alaska were under a Winter Storm Warning for much of the weekend, as shown below by the red regions to the north of Fairbanks. (The red regions around the Seward Peninsula were regions where a High Wind Warning had been cancelled after strong winds weakened. This toggle of MetopB and MetopC ASCAT winds from 0530-0630 UTC on 13 October (source)... Read More

Visible imagery over Hurricane Milton after sunrise on 7 October, above, shows a compact system about 100 miles northwest of the Yucatan Peninsula. The predicted track of the storm center is superimposed on the imagery. Note that Milton’s sustained winds at 1500 UTC, 135 knots, represents an 80-knot increase over... Read More