Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
300 PM EST Sun Jan 12 2025

Valid 00Z Mon Jan 13 2025 - 00Z Wed Jan 15 2025

...Critical fire weather conditions continue across the fire-ravaged
region of southern California...

...Clipper system to bring snow showers to the Great Lakes along with
renewed surge of arctic air into the upper Midwest and Ohio Valley...

...Rain will overspread the central Gulf states through tonight then
across the Florida Panhandle and southern Georgia on Monday...

The weather pattern across North America will favor a resurgence of arctic 
air across the northern and eastern U.S. over the next couple of days. The
latest wave of arctic air will continue to overspread the northern Plains
and into the upper Midwest behind a low pressure system that is forecast
to track across the Great Lakes through tonight.  Up to a few inches of
new snow can be expected across the upper Midwest, but for locations near
Lake Superior and downwind from Lake Michigan, 8 inches to possibly a foot
of snow could fall due to enhancement effects from the relatively mild
lake waters.  The lake-effect/enhanced snow will make a comeback for the
Snow Belt of the lower Great Lakes by Monday and into Tuesday behind an
arctic front with locally more than a foot of new snow possible.  Up to a
couple of inches of snow can also be expected across the Ohio Valley with
a few inches possible over West Virginia following the passage of the
arctic front. Given the renewed surge of arctic cold in its wake, high
temperatures will struggle to reach into the single digits and teens
across the northern Plains into Monday, spreading into the Ohio Valley by
Tuesday.  A clipper-like low pressure system will bring a swath of light
snow from the northern High Plains toward the Midwest Monday night into
Tuesday, along with a reinforcing surge of arctic air into the northern
Plains.

Meanwhile, snow showers are expected to linger across portions of the
northern Rockies into the High Plains through tonight and into much of
Monday ahead of the stationary portion of the arctic front with a foot of
new snow possible mainly near mountain peaks.

Fire weather will remain a high concern across fire-ravaged region of
southern California.  A resurgence of gusty winds is forecast tonight into
Monday across southern California as mid-level impulses sink south across
the western U.S., allowing for a re-tightening of the surface pressure
gradient and gusty downslope/offshore winds from the Desert Southwest into
southern California into Tuesday.

Along the Gulf Coast, an area of low pressure forming along a tightening
frontal boundary over the open Gulf waters will track eastward edging
toward the central Gulf Coast region.  Rain is expected to expand and
steadily move east across the central Gulf states through tonight.  By
Monday morning, rain will spread across the Florida Panhandle into
portions of southern Alabama/Georgia but rainfall intensity will diminish
throughout the day on Monday.  While some light rain may continue over
Florida near a frontal boundary Tuesday morning, much of the U.S. will see
relatively quiet weather.

Kong


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