234 
FXUS01 KWBC 141930
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
229 PM EST Sun Dec 14 2025

Valid 00Z Mon Dec 15 2025 - 00Z Wed Dec 17 2025

...Heavy snow over parts of the Lakes Erie/Ontario coastline...

...There is a Slight Risk of excessive rainfall over parts of the
Pacific Northwest on Monday...

...Cold temperatures over the eastern third of the country on
Monday...

The high pressure will bring temperatures 10 to 15 degrees below
average over the Eastern third of the country on Monday.
Upper-level energy will produce light to moderate snow over parts
of Michigan, tapering off by Monday evening. See the WPC Heavy
Snow Discussion for details and amounts. Additionally,
lake-effect/lake-enhanced snow will develop downwind from the
Great Lakes through late Monday afternoon.

Meanwhile, onshore flow over the Pacific Northwest will produce
rain on Sunday and heavy rain Monday into Tuesday. Therefore, the
WPC has issued a Slight Risk (level 2/4) of excessive rainfall
over the Pacific Northwest from Monday into Tuesday morning. The
associated heavy rain will create mainly localized areas of flash
flooding, with urban areas, roads, small streams, and burn scars
being the most vulnerable. The rain will continue over the
Northwest through Tuesday evening. After the associated front
moves over the area on Monday afternoon into Tuesday, moderate to
heavy snow will develop over parts of the Cascades into the
Northern Rockies.

Ziegenfelder

Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php

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