Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
1233 AM EST Sun Nov 28 2021

Valid 12Z Sun Nov 28 2021 - 12Z Tue Nov 30 2021

...Heavy lake enhanced snow downwind from the Great Lakes and snow for
parts of New England and The Central Appalachians...

...Temperatures will be 15 to 30 degrees above average over parts of the
Northern Rockies and Northern/Central High Plains...

A plume of moisture will continue to stream into the Pacific Northwest
through Monday morning. This moisture will produce moderate to isolated
heavy rainfall over parts of the Northwest today. With most of the
heaviest rainfall having fallen on Saturday, the risk for flash flooding
has been downgraded to a marginal for today. That being said, parts of the
Olympics and northern Cascades can expect to receive several more inches
of rainfall through tonight. The associated rain will create localized
areas of flash flooding, affecting places that experience rapid runoff
with heavy rain. On-and-off periods of rain showers are to continue across
the region through Tuesday.

Meanwhile, an Alberta clipper will cross the Midwest and into the interior
Northeast today producing snow across much of the Great Lakes region and
into the Northeast/Central Appalachians through Monday.  Downwind from
Lakes Superior, Michigan, Huron, and Erie, the snow will be heavy,
including parts of Michiganâ€s eastern Upper Peninsula and the northern
third of the Lower Peninsula, northeastern Ohio, northwestern
Pennsylvania, and western New York State, likewise, through Monday.
Snowfall totals are likely to range between 4-8 inches with locally higher
totals expected downwind of the lakes, particularly Lake Eerie where they
may receive upwards of a foot or more of snow through Monday afternoon.
Winds are expected to pickup across New England as this clipper system
deepens over the Northeast/Canadian maritime on Monday.

Also, moisture off the Western Gulf of Mexico and upper-level energy will
produce light rain and scattered thunderstorms over parts of the Southern
Plains/Lower Mississippi Valley through tonight. Furthermore, upper-level
ridging over the Northwest will allow temperatures to be 15 to 30 degrees
above average over parts of the Northern Rockies and Northern/Central
Plains, expanding into parts of the Southern Plains and Mississippi Valley
through Tuesday while below average temperatures will be shift into the
East Coast on Monday.

Kebede/Ziegenfelder


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