High Wind — Deltana and Tanana, Alaska

2012-09-04 · Deltana and Tanana, Alaska

Wider weather episode

A 970 mb low pressure center in the south central Bering Sea on the morning of the 4th moved to Kotzebue by the evening of the 5th and weakened to 990 mb. The associated weather front moved across the eastern Interior on the night of the 4th through the 5th, moving into Canada by late afternoon on the 5th. The resulting strong chinook flow over the Alaska Range produced high winds in and near the Alaska Range.

Zone 223: At Delta Junction there was a peak wind gust to 66 kt (76) mph at the Delta Junction ASOS during the evening of the 4th. The wind frequently gusted over 52 kt (60 mph) from approximately 1700AKST through 0000AKST on the 5th.

Zone 224: It was estimated that the wind gusted as high as 56 kt (65 mph) at the Robertson River Bridge at 1100AKST on the 5th. Some trees were knocked over by the high wind.

Zone 225: There was a peak wind gust to 55 kt (63 mph) at Otto Lake at 1615AKST on the afternoon of the 4th. Based on the peak wind gust at Otto Lake, it is likely that the wind gusted in excess of 70 mph at the Antler Creek DOT site at MP 244 along the Parks Highway.

Source: NOAA Storm Events Database, event_id 398314. Narrative written by the NWS forecast office that issued the report.