Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
207 AM EST Sun Nov 20 2022

Valid 12Z Sun Nov 20 2022 - 12Z Tue Nov 22 2022

...Heavy lake effect snow downwind from the Great Lakes winds down today...

...Below average temperatures in the East and South today before
moderating this week...

Periods of heavy lake effect snow will wind down downwind of the Great
Lakes tonight. Additional accumulations of 2-4" are expected downwind of
lakes Michigan, Huron, Superior and Erie, while up to a foot and a half of
snow is possible with locally higher amounts downwind of lake Ontario
through tonight. Gusty winds and bouts of lighting may cause hazardous
driving conditions across upstate New York today. Heavy snow should taper
off by Monday morning when winds are expected to pick up again with the
arrival of another low pressure system over northern/central Ontario.
Winter Storm Warnings and Winter Weather Advisories remain in effect for
parts of the eastern UP and western Michigan. Lake Effect Snow Warnings
and Winter Weather Advisories continue for downwind areas of Lakes Erie
and Ontario.

Elsewhere, surface high pressure over much of the lower 48 will generate
below average temperatures for portions of the East and South today before
things begin moderating a bit across the rest of the country. Light winds
and dry conditions will produce poor air quality over much of the Pacific
Northwest early this week. Hard Freeze and Freeze Warnings are in effect
for some of the mountains and valleys of southern and central California,
while Red Flag Warnings are in effect for parts of Los Angeles and Ventura
Counties through this morning. A stationary front draped between Florida
and Cuba will be the focus for thunderstorm activity over southern Florida
for the next few days.


Kebede


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