Winter Weather Discussion – 2009-4-3

Winter Weather Discussion for March 26-28, 2009.
Valid: 03/26/2009.

Highlights:

– Significant snow event about to start.

– Blizzard conditions are ongoing in Colorado and will spread
southeast towards Oklahoma over the next few hours. Snowfall is
expected to be occurring in the panhandles by midnight.

– Conditions will rapidly deteriorate in the panhandles in northwest
Oklahoma during the overnight hours.

– Preparations should be rushed to completion.

– Confidence is high on expected snow accumulations across the state.

– See watch/warning configuration below.

Discussion:

Current radar imagery light rain has developed in the western Oklahoma
panhandle as of 18:53 CDT, given temperatures in the upper 40s.
However, about 40 miles northwest into Colorado temperatures are 32F.
As this air moves south, rain will turn to snow across the panhandle.
Recent product from the Storm Prediction Center indicates this
transition should occur by midnight. Presence of deep layer moisture
to the east of this system will provide a favorable environment for
heavy snow. Elevated instability will also favor convective snow
bands with snowfall rates up to 2 inches/hour.

Watch/Warnings:

Blizzard Warning: Cimarron and Texas
Winter Storm Warning:
BEAVER-HARPER-WOODS-ALFALFA-GRANT-ELLIS-WOODWARD-MAJOR-GARFIELD-ROGER
MILLS-DEWEY-CUSTER-BLAINE
Winter Storm Watch:
OKLAHOMA-LINCOLN-KAY-NOBLE-KINGFISHER-LOGAN-PAYNE-WASHITA-CADDO-CANADIAN-HARMON-GREER-KIOWA-JACKSON-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES-DELAWARE-CREEK-WAGONER

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About Putnam Reiter

Putnam has been storm chasing since 1990 and is a co-founder of Hook-Echo.com. For his day job, Putnam works in emergency management for information technology.
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