This website works best with a newer web browser such as Chrome, Firefox, Safari or Microsoft Edge. Internet Explorer is not supported by this website.

CIMSS Satellite Blog

MENU

Heavy rainfall across Interior Alaska

By Scott Bachmeier •

Topography + GOES-17 "Clean" Infrared Window (10.35 µm) images [click to play animation | MP4]

Topography + GOES-17 “Clean” Infrared Window (10.35 µm) images [click to play animation | MP4]

An animation of Topography + GOES-17 (GOES-West) “Clean” Infrared Window (10.35 µm) images (above) showed a southward-moving band of clouds responsible for producing heavy rainfall across portions of Interior Alaska on 02 August 2020. Cloud-top infrared brightness temperatures were as cold as -58ºC (brighter shades of yellow).

GOES-17 “Red” Visible (0.64 µm) images are shown below.

GOES-17 "Red" Visible (0.64 µm) images [click to play animation | MP4]

GOES-17 “Red” Visible (0.64 µm) images [click to play animation | MP4]

Blended Total Precipitable Water (TPW) and Percent of Normal TPW images during the 01-02 August time period (below) portrayed TPW values as high as 1.5 inches just north of Lake Minchumina — which was >190% of the normal value for this location and time of year.

Blended TPW and Percent of Normal TPW images [click to play animation | MP4]

Blended TPW and Percent of Normal TPW images [click to play animation | MP4]

A sequence of VIIRS Infrared Window (11.45 µm) images from NOAA-20 and Suomi NPP as viewed using RealEarth (below) revealed cloud-top infrared brightness in the -60 to -65ºC range (darker shades of red) within this cloud band.

VIIRS Infrared Window (11.45 ) images from NOAA-20 and Suomi NPP [click to enlarge]

VIIRS Infrared Window (11.45 µm) images from NOAA-20 and Suomi NPP [click to enlarge]


Categories: GOES-17, Heavy rain / flooding, Microwave, NOAA-20, RealEarth, Suomi NPP, VIIRS