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KF5JRV > WX 21.04.21 10:35l 74 Lines 3300 Bytes #999 (0) @ USBBS
BID : 13944_KF5JRV
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Subj: NWS USA WX Forecast - Apr 21
Path: IZ3LSV<IQ2LB<IK1NHL<CX2SA<OK2PEN<NA7KR<ZL2BAU<GB7YEW<AB0AF<W0ARP<
KF5JRV
Sent: 210421/0835Z 13944@KF5JRV.#NWAR.AR.USA.NA BPQ6.0.20
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
418 AM EDT Wed Apr 21 2021
Valid 12Z Wed Apr 21 2021 - 12Z Fri Apr 23 2021
...A low pressure system will continue to bring wet snow across northern
New England through Thursday morning...
...Light snow lingers across central Rockies as another surge of cold air
brings additional snowfall into the northern Rockies...
...Subfreezing record cold temperatures this morning across much of the
south-central U.S. will shift to parts of the eastern U.S. Thursday
morning...
...Fire weather threat increasing over the Desert Southwest as well as
over the Southeast U.S. coast today...
Much of the active weather today will be associated with an intensifying
low pressure system which is forecast to move across the central
Appalachians and into New England through tonight. A swath of wet snow is
expected to expand northeastward near the Canadian border from New York
into northern New England through Friday morning as the storm center
passes just to the south. Total snowfall amounts of 6 to 10 inches are
forecast in these areas with up to 12 inches possible near the northern
tip of Maine. Further south in the Mid-Atlantic to southern New England,
some showers and embedded thunderstorms are expected this afternoon as a
cold front moves quickly through the region. In fact, the Storm
Prediction Center has issued a Slight Risk of severe thunderstorms for the
Mid-Atlantic coast to southern New England for today.
In the wake of the developing storm system, unseasonably cold air will
continue to surge into the central U.S. toward the eastern U.S, leading to
widespread Freeze Watches and Warnings that cover much of the central
U.S., Midwest and the interior eastern U.S. Numerous daily record low
temperatures are forecast to be tied or broken this morning and Thursday
morning as temperatures dip to below freezing, around 20-25 degrees below
average for late April. Residents in these areas are encouraged to take
preventative measures to mitigate the impacts of sub-freezing temperatures
on vulnerable vegetation if possible. By Friday, the cold airmass will
moderate as it drifts east, although low temperatures will remain around
10 degrees below normal in the Central U.S., with lows hovering in the
mid-30's to 40's.
In the western U.S., a low pressure system will bring lingering light snow
across the central Rockies for the next few days while another surge of
cold air from western Canada reaches the northern Rockies/High Plains on
Thursday. Temperatures will once again tumble, along with a quick burst
of snow, as the cold front passes through much of Montana by Thursday
evening. The snow should move further south into Wyoming by Friday
morning.
Meanwhile, active weather across southern Florida is expected to gradually
move offshore as drier air arrives behind a front. The dry, windy
conditions behind the front are forecast to increase the threat of fire
over the Carolinas today. In addition, fire weather threat will be
increasing in Desert Southwest over the next three days as low pressure
deepens to the north.
Kong
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
73, Scott KF5JRV
Pmail: KF5JRV @ KF5JRV.#NWAR.AR.USA.NA
Email: KF5JRV@GMAIL.com
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