Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
257 AM EST Sat Feb 04 2023

Valid 12Z Sat Feb 04 2023 - 12Z Mon Feb 06 2023

....Temperatures will be 10 to 30 degrees below average over parts of the
Northeast into the coastal Mid-Atlantic...

...Lake-effect snow downwind from the Great Lakes on Saturday...

...Snow over parts of the Cascades, Great Basin, Northern/Central Rockies,
Great Lakes and Northeast; heavy snow over the Sierra Nevada Mountains...

Cold high pressure over the Mid-Atlantic and northern New York State will
move eastward off the East Coast by early Sunday. The associated cold air
will produce temperatures 10 to 30 degrees below average over parts of the
Northeast into the coastal Mid-Atlantic through Sunday. Therefore, Wind
Chill Warnings and Wind Chill Advisories are across New York State and New
England. Temperatures will begin to moderate on Sunday.

Meanwhile, upper-level energy over the Great Lakes will aid in producing
lake-effect snow downwind from the Upper Great Lakes through late
Saturday. Elsewhere, a wave of low pressure over a front over southeastern
Florida will move southward, off the peninsula, by Saturday afternoon. The
low will produce light rain over parts of southern Florida through
Saturday. Easterly flow off the Atlantic will aid in creating light rain
along the east coast of Florida through Sunday. A wave of low pressure
develops along the front over parts of northeastern Florida on Sunday and
then moves northeastward off the Southeast Coast out over the Atlantic
Ocean by Monday.

Moreover, a front over the Eastern Pacific will move onshore over the West
Coast overnight Saturday and southeastward to the Central Plains by
Monday. On Saturday, the system will produce coastal rain and
higher-elevation snow over the Pacific Northwest. In addition, rain and
higher-elevation snow will move into parts of California overnight
Saturday. On Sunday, snow expands into the Great Basin as heavy snow falls
over the Sierra Nevada Mountains. Coastal rain and higher-elevation snow
will continue over most of the West Coast on Sunday evening. The snow will
also expand into the Northern/Central Rockies. The rain and
higher-elevation snow will taper off over California by Monday.

In the meantime, a front over South-Central Canada will move into the
Upper Midwest overnight Saturday. The front will move across the Great
Lakes and into the Northeast by Monday. The boundary will produce light
snow over parts of the Upper Great Lakes on Sunday afternoon. Overnight
Sunday, the snow will move into the Lower Great Lakes and Northern New
England. The snow will result in reduced visibility and hazardous driving
conditions.

Ziegenfelder

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