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River Flooding in Southwest Alaska

By Scott Bachmeier •

Landsat-8 False Color RGB mage + Google Maps background [click to enlarge]

Landsat-8 False Color RGB image + Google Maps background [click to enlarge]

A Landsat-8 False Color Red-Green-Blue (RGB) image as viewed using RealEarth (above) showed areas of flooding (water = darker shades of blue) along portions of the Innoko River and the Iditarod River in Southwest Alaska on 05 May 2020. Much of southwestern Alaska had received above-average winter season snowfall — and rapid snow melt was contributing to this river flooding.

The Suomi NPP VIIRS River Flood Areal Extent product over that same region (below) indicated several areas of 81-90% flooding coverage (red enhancement).

Suomi NPP VIIRS River Flood Areal Extent product [click to enlarge]

Suomi NPP VIIRS River Flood Areal Extent product [click to enlarge]

Categories: Heavy rain / flooding, Landsat, RealEarth, Red-Green-Blue (RGB) images, Suomi NPP, VIIRS