As an anomalously-deep Kona low moved northwest of and then west of Hawai`i during the 04-07 December 2021 period, it began to tap moisture from the Pacific ITCZ and channel it northward across the islands — setting the stage for a prolonged heavy rainfall event (which produced the wettest December day on record at Honolulu). Hourly MIMIC TPW images viewed... Read More

As cold arctic air moved across the still-unfrozen waters of Lake Sakakawea on 06 December 2021, a lake effect cloud plume was seen downwind (southeast) of the lake in GOES-16 (GOES-East) Night Fog BTD (10.3 – 3.9 µm) and Day Snow Fog RGB images (above).In a comparison of NOAA-20 VIIRS True Color RGB, False Color RGB and Infrared Window (11.45... Read More