AWIPS images of Suomi NPP VIIRS 0.64 µm visible channel data (above) showed the development of early afternoon thunderstorms over the interior of Alaska as an upper-level low moved westward over the region on 19 June 2014.
An animation of VIIRS 11.45 µm IR channel images spanning the 18-19 June period (below) depicted large areas of cloudiness exhibiting cold cloud-top IR brightness temperature values in the -45 to -50º C range (darker red color enhancement). During this time some locations across the interior of Alaska received over 4 inches of rainfall, prompting the issuance of Flood Warnings for parts of the Goodpaster, Salcha, and Upper Chena Rivers.
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The Blended Total Precipitable Water (TPW) product (above; click image to play animation) showed areas where TPW values were in the 25-30 mm or 1.0 to 1.2 inch range (darker green to yellow color enhancement). The corresponding Percent of Normal TPW product (below; click image to play animation) indicated that these TPW values were generally in the 150-200% of normal range for this region and this time of year.
4 inches of rain is impressive. This was really interesting. thanks