* WHAT. Flooding caused by a glacier-dammed lake outburst is expected. * WHERE. The Salmon River near areas around mile marker 9 of the Salmon River highway. * WHEN. Until 930 PM AKDT Thursday. * IMPACTS. Minor flooding in low-lying and poor drainage areas. River or stream flows are elevated. * ADDITIONAL DETAILS. - At 931 PM AKDT, a trained weather spotter reported that the river water is murky/muddy, flowing quickly, is about 4 ft above its normal level & has risen rather quickly, the river flow is getting rough, making surf/waves in its flow, & trees on the edge of the riverbank are starting to erode into the river, indicating that a glacier-dammed lake outburst in areas around mile marker 9 of the Salmon River highway is occurring. Water is not crossing over the road at this time. Minor flooding is ongoing or expected to begin shortly, especially near the Salmon River. - Inherent uncertainty in initial glacier lake volume will result in varying crest height and timing. - Some locations that will experience flooding include. Hyder.
