Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
258 AM EST Fri Feb 23 2018
Valid 12Z Fri Feb 23 2018 - 12Z Sun Feb 25 2018
...Heavy rain possible from parts of the Southern Plains northeastward to
the Eastern Ohio Valley...
...Heavy snow possible over parts of the Upper Mississippi Valley/Upper
...Heavy snow possible over the Cascades and Northern Rockies...
...Rain/freezing rain possible over parts of interior New England...
A storm over the Upper Great Lakes/Upper Mississippi Valley will move
northeastward into Southeastern Canada overnight Friday. The system pulls
a front extending roughly from the Western Ohio Valley to the Western Gulf
Coast that will move eastward off the Northeast/Northern Mid-Atlantic
Coast then westward to a wave of low pressure over the Middle Mississippi
Valley by Saturday evening. Snow will develop over parts of the Northern
Plains to the Upper Mississippi Valley/Upper Great Lakes that will lift
northeastward into Canada by Friday evening. Showers and thunderstorms
will develop along and ahead of the front from the Western Gulf
Coast/Southern Plains to the Ohio Valley that will lift northward into
parts of the Middle/Lower Mississippi Valley by Friday evening.
Additional showers and thunderstorms will also develop over parts of the
Central Gulf Coast by Friday evening. In addition, rain will develop over
parts of the Central Appalachians into the Mid-Atlantic that will move
into parts of the Northeast by Friday evening with snow developing over
parts of Northern Maine. The rain will move off the Northeast
Coast/Northern Mid-Atlantic Coast by Saturday morning. A region of
rain/freezing rain will develop over parts of interior New England Friday
into Friday evening.
Meanwhile, a developing wave of low pressure over the Southern High Plains
will move northeastward to the Middle Mississippi Valley by Saturday
evening. The associated front will move from the Southern
Rockies/Southwest will also move northeastward to the Middle Mississippi
Valley southwestward to the Western Gulf Coast by Saturday evening. The
storm will produce snow over parts of the Great Basin/Southwest and the
Central Rockies that will move northeastward into parts of the Central
Plains and Central/Southern Rockies by Saturday morning. The snow will
move into parts of the Northern Plain/Upper Mississippi Valley by Saturday
evening. Overnight Friday, showers and thunderstorms will develop along
and ahead of the associated boundary over the Southern Plains into
Saturday morning. The showers and thunderstorms will move into the
Middle/Lower Mississippi Valley by Saturday evening.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php