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KF5JRV > WX 22.12.16 13:48l 53 Lines 2361 Bytes #999 (0) @ USA
BID : 7382_KF5JRV
Read: GUEST
Subj: NWS USA WX Forecast 12/22
Path: IW8PGT<CX2SA<XE1FH<N9PMO<NS2B<KF5JRV
Sent: 161222/1215Z 7382@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.13
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
237 AM EST Thu Dec 22 2016
Valid 12Z Thu Dec 22 2016 - 12Z Sat Dec 24 2016
...Heavy to excessive rainfall possible on Thursday for portions of the
Southwest...
...Heavy to excessive rainfall possible along the California coast on
Friday...
...Heavy snowfall possible across the higher terrain of the Sierras and
into the Intermountain West...
An upper level system just off the Southwest U.S. coast this morning will
continue to spread heavy rainfall and higher elevation snow as it moves
inland on Thursday over much of the Southwest and southern Rockies.
Excessive rainfall and flash flooding is possible across portions of
central Arizona into far western New Mexico. As the upper system slides
eastward into the Southern High Plains by Friday, it should tap into Gulf
of Mexico moisture and spread precipitation as it moves eastward from the
Plains to the Northeast Friday and Saturday. The best chance for organized
rainfall will be to the north of a warm front from the Lower Mississippi
Valley into the Tennessee Valley on Friday. In the northern portion of the
precipitation shield, it should be cold enough for snow from the Upper
Mississippi Valley to the Great Lakes. Generally light accumulations are
expected in these areas on Friday.
Meanwhile, another system pushing eastward through the eastern Pacific
will bring precipitation into the Western states by Thursday night. On
Friday, a steady stream of moisture focused into California could bring
very heavy rainfall and the potential for flash flooding along the coast,
with heavy snowfall expected in the higher terrain of the Sierras. As the
system pushes eastward across the West, conditions should begin to dry out
by the weekend along the coast, but another round of rain and mountain
snow will spread eastward into the Intermountain West and the Southwest
Friday night and into Saturday.
Elsewhere, a departing system out of the Northeast on Thursday may spread
some light snowfall across the lower Great Lakes and New England. At the
same time, a lingering frontal boundary will keep mainly light rain in the
forecast along coastal Florida as well as the western Gulf coast.
Santorelli
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
73 Scott KF5JRV
KF5JRV.#NWAR.AR.USA.NA
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