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Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Overview

This "northwest flow" event (i.e. flow aloft was from the northwest) lead to a number of damaged houses, outbuildings, power poles, trees and other vegetation due to strong outflow winds and two separate microbursts originating from the same supercell thunderstorm. This supercell developed just east of Dumas, Texas and moved south through Amarillo and Canyon. Initially the supercell produced very large hail to the size of baseballs north of Amarillo, and would drop 2 inch hail in Amarillo. The storm produced its first microburst as it started becoming outflow dominant in southern Amarillo where some power poles were damaged. The second more powerful microburst occurred just south of Amarillo and would lead to some considerable damage with winds up to 90 mph estimated based on damage between Amarillo and Canyon along and near county road 1541. During this time, the storm also dumped 2 to 6 inches of mostly dime size hail (although the were some reports of hail up to the size of golf balls as well) along its path. Another storm would become severe briefly near Spearman producing ping-pong ball size hail, but dissipated within an hour or so.

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Looking north from 3 east of Canyon around 8:45 PM CDT by Aaron Ward Radar reflectivity and base velocity of the storm at 8:53 PM CDT.  Looking north from 3 east of Canyon around 8:55 PM CDT by Aaron Ward
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