Enhanced Risk for Severe Thunderstorms Across the Upper Midwest; Flash Flooding Possible from the Upper Midwest to Southern Plains and Desert Southwest Through Friday

Portions of the Upper Midwest will see an increased threat for severe thunderstorms through this evening, with a few strong tornadoes possible. The same region remains on alert for additional flash flood concerns. Heavy rainfall may lead to flash flooding across the Desert Southwest today, and Southern Plains by Friday. Finally, Major-to-record river flooding continues across the Carolinas.

Last Update: 343 AM AKDT Thu Sep 20 2018

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Anchorage, AK Local Forecast Office

193NM SSW Saint Matthew Island AK

Marine Zone Forecast

Synopsis: A 1008 mb low at 51N 177W moves to 58N 178W at 992 mb by Fri morning and then to 60N 170W at 983 mb by Sat morning.

S wind up to 20 kt becoming SE 15 to 30 kt in the afternoon. Seas 7 ft. Patchy fog. Rain.
SE wind 15 to 30 kt. Seas 8 to 13 ft. Patchy fog. Rain.
W wind 15 to 30 kt. Seas 9 to 14 ft.
Fri Night
W wind 20 to 35 kt. Seas 10 to 17 ft.
W wind 15 to 30 kt. Seas 8 to 13 ft.
Sun Through Mon
W wind up to 15 kt. Seas 4 to 7 ft.
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Last Update: 343 AM AKDT Thu Sep 20 2018
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