KF5JRV > WX 07.04.17 13:27l 54 Lines 2379 Bytes #999 (0) @ USA
BID : 13599_KF5JRV
Read: GUEST
Subj: NWS USA WX Forecast 4/7
Path: IW8PGT<CX2SA<N9PMO<NS2B<KF5JRV
Sent: 170407/1215Z 13599@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.13
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
339 AM EDT Fri Apr 07 2017
Valid 12Z Fri Apr 07 2017 - 12Z Sun Apr 09 2017
...Heavy rain and mountain snow expected over portions of the western U.S.
Friday and Saturday...
...Gusty winds along with rain and snow showers should begin to gradually
diminish across the Northeast and Mid-Atlantic states...
...Temperatures will remain above normal beneath an upper ridge shifting
from the Great Plains to the Mississippi Valley over the next few days...
A deep surge of moisture ahead of a strong Pacific system entering the
Western U.S. will continue to support heavy rain and mountain snow over
the favored terrain of the Pacific Northwest and California early
Friday...with multiple feet of snow expected along the higher peaks of the
Sierra Nevada range. The deep surface low associated with the storm will
lift northeastward towards Vancouver Island while the anomalous plume of
moisture shifts southward through California Friday into Saturday.
However...periods of heavy precipitation...including late season snowfall
accumulations in the higher elevations...will still be possible as the
system's cold front presses farther inland over the Western U.S. this
weekend.
The same storm that brought widespread severe weather to the eastern third
of the Nation over the past few days is expected to lift through the
Northeast on Friday. The greatest instability and any chance for severe
weather will be well offshore...but strong winds surrounding the storm's
surface low should help trigger rain and snow showers downwind of the
Great Lakes and along the upslope side of the central and northern
Appalachians. Activity should gradually diminish across the region as the
surface low weakens and lifts towards Canada Friday night into Saturday.
Also...below normal temperatures across much of the eastern U.S. on Friday
should begin to moderate by the weekend.
Elsewhere across the nation...above normal temperatures are expected
beneath an upper ridge sliding eastward from the Great Plains to the
Mississippi Valley Friday and Saturday...with daytime temperatures
reaching 15 to 20 degrees above normal over portions of the Northern
Plains and Upper Midwest.
Gerhardt
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
73 Scott KF5JRV
KF5JRV.#NWAR.AR.USA.NA
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