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KF5JRV > WW 03.02.18 14:48l 64 Lines 3122 Bytes #999 (0) @ WW
BID : 5037_KF5JRV
Read: GUEST
Subj: NWS USA WX Forecast - Feb 3
Path: IW8PGT<IR2UBX<SR1BSZ<OK0NBR<OK2PEN<SV1CMG<PI8BDG<AB0AF<KF5JRV
Sent: 180203/1226Z 5037@KF5JRV.#NWAR.AR.USA.NA BPQ6.0.14
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
131 AM EST Sat Feb 03 2018
Valid 12Z Sat Feb 03 2018 - 12Z Mon Feb 05 2018
...Unsettled weather with locally heavy rain and snow will continue over
the Pacific Northwest and the Northern Rockies...
...A new storm developing over the Midwest will bring a threat of snow to
areas of the Great Lakes, Central Appalachians and Northeast by the end of
the weekend...
...Arctic air will pour south across the Northern Plains and Upper
Midwest...
Moist onshore flow associated with a series of storm systems will keep
much of the Pacific Northwest to the Northern Rockies in an unsettled, and
wet pattern through the weekend and into early next week. This will bring
locally heavy rain to coastal Washington while the higher elevations to
the east will have heavy snow. Areas of the Washington Cascades, and
especially the interior ranges of the Northern Rockies including the
Bitterroots, Tetons and Big Horns will see as much as 2 to 3 feet of fresh
snow through Monday. For the rest of the Western U.S., mild and dry
conditions are expected to continue. Temperatures across the Southwest,
Great Basin and California will generally be near or above average.
Meanwhile, very cold air initially in place over portions of the Eastern
U.S. will quickly erode as high pressure advancing over the Mid-Atlantic
region today moves offshore the East Coast by Sunday. This will allow
temperatures to begin to moderate as southerly winds begin to return.
However, as this area of high pressure moves offshore, a complex storm
system will be developing over the Central Plains and Middle Mississippi
Valley as some of the energy impacting the Northwest U.S. drops southeast.
Multiple waves of low pressure will impact the broader Midwest through the
weekend which will allow for a swath of accumulating snow across the Great
Lakes, Central Appalachians and the Northeast. It appears that
temperatures should warm up just enough across the Mid-Atlantic region for
generally a cold rain to fall here, but some snow initially along with
pockets of freezing rain can be expected. More widespread and heavier rain
is expected farther south from the Tennessee Valley to the Gulf Coast
states and including interior areas of the Southeast as a separate area of
low pressure impacts this region and draws a more substantial axis of
moisture north in off the Gulf of Mexico.
Another blast of arctic air will plunge south from Canada late this
weekend and arrive over the much of the Northern U.S. In fact, over areas
of the Northern Plains and Upper Midwest, daytime temperatures will
struggle to get out of the single digits and nighttime lows will be well
below zero. These temperatures coupled with the wind will result in
dangerously cold windchill values. Some of this very cold air will settle
southeast across portions of the Central and Eastern U.S. going into the
early part of next week.
Orrison
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
73 de Scott KF5JRV
Pmail: KF5JRV@KF5JRV.#NWAR.AR.USA.NA email: KF5JRV@ICLOUD.COM
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