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Atmospheric River in the West; Strong Winds in the Northeast

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. today into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. today into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Overview

An anomalous August 2-3 severe weather event unfolded during the late evening and overnight Saturday into Sunday morning. The combination of ample moisture, instability, and highly anomalous wind shear provided the needed ingredients for severe storms, and an impulse in the northwest flow aloft helped produce the storms as a low level jet intensified. By 11 PM, scattered severe storms developed from Cimarron County, with additional storms pushing east into Oldham County from NM. These storms became severe quickly producing large to very large hail and damaging to destructive straight line winds. The worst storm rapidly strengthened as it moved towards Cactus, Sunray, and Dumas producing what was likely 90 to 100 mph straight line winds. Widespread damage was reported in Sunray to Dumas. The storms went on to produce damage consistent with 70-80 mph winds in Fritch and parts of Borger. The storm finally weakened later in the morning, but maintained severe status all the way to the southeast corner of the outlook area.
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