The MIMIC Total Precipitable Water product during the period 0400 UTC on 06 March to 1200 UTC on 08 March 2023 (above) displayed the poleward transport of an atmospheric river (AR) that moved across Alaska and then the North Pole — eventually passing over Svalbard (located between Norway and Greenland). As this AR was... Read More

NOAA‘s GOES ABI has been monitoring the late year cold air outbreak over the contiguous US. Infrared ImageryDuring these extreme cold air outbreaks, it may seem like the infrared imagery “confuses” clouds and the cold ground, but this isn’t the case as the instrument just monitors the heat of the... Read More

GOES-17 (GOES-West) Upper-level Water Vapor (6.2 µm) images (above) include contours of AK-NAM40 model Max Wind isotachs — and showed the flow associated with an anomalously-strong jet stream, with its axis located just off the Arctic coast of Alaska on 03 December 2022.Plots of Utqiagvik (Barrow, PABR) rawinsonde data from 1200 UTC... Read More

A sequence of Suomi-NPP VIIRS Visible images (above) showed a large area of ice-free water in the western Beaufort Sea and eastern Chukchi Sea north of Alaska — with limited sea ice concentration as far north as 80º N latitude — on 13 September 2022.  False Color RGB images from... Read More