Short Range Forecast Discussion...Corrected
NWS Weather Prediction Center College Park MD
1211 PM EST Sun Feb 25 2018
Valid 00Z Mon Feb 26 2018 - 00Z Wed Feb 28 2018
...Heavy rain/flash flooding possible near Louisiana today/tonight and
near northern Mississippi Tuesday...
...Heavy snow possible over parts of the Cascades, Northern Rockies, and
...Snow/freezing rain possible over parts of Northern New England...
A pair of cold fronts moving into the West will produce rain near the
coast and interior/higher elevation snow at times near the coastal ranges
and the northern Continental Divide through Tuesday. The pattern remains
unsettled due to cold air aloft sponsored by a pair of upper level
disturbances. Snow today and tonight is expected to be heavy which has
led to winter storm warnings for the Cascades and northern Continental
Divide, with greater than a foot of snow expected within the Oregon
Cascades. High Wind Watches are in effect east of the Divide for portions
of Wyoming into Sunday morning as the pressure gradient increases ahead of
the first frontal zone.
As a deep cyclone near the Great Lakes lifts through eastern Canada,
snow/freezing rain is deposited to its east within a cold airmass over
parts of Northern New York and interior New England this afternoon and
evening where winter weather advisories are currently in effect.
To the south, the combination of a pre-frontal trough and the tail end of
the cyclone's cold front keep the threat of heavy rain in the cards across
eastern Texas, Louisiana, and western Mississippi into this evening, along
with a marginal risk of severe weather per guidance from the Storm
As a cyclone aloft develops across the Southwest with time, return flow
from the Gulf of Mexico lifts the frontal zone northward into the Lone
Star State and brings a renewed threat of rain/thunderstorms to Texas
Tuesday morning which spreads northeast across the Southeast and Lower
Mississippi Valley during the day Tuesday. Some of the rain could be
heavy and poses a risk of flash flooding to areas around northern
Mississippi on Tuesday and Tuesday night.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php