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KF5JRV > WX 11.05.21 15:36l 67 Lines 3116 Bytes #999 (0) @ USBBS
BID : 14884_KF5JRV
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Subj: NWS USA WX Forecast - May 11
Path: IZ3LSV<IQ2LB<IK1NHL<CX2SA<OK2PEN<NA7KR<ZL2BAU<GB7YEW<AB0AF<W0ARP<
KF5JRV
Sent: 210511/1135Z 14884@KF5JRV.#NWAR.AR.USA.NA BPQ6.0.20
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
359 AM EDT Tue May 11 2021
Valid 12Z Tue May 11 2021 - 12Z Thu May 13 2021
...Widespread rain and thunderstorms will persist across the Gulf Coast
states...
...Ongoing snow in the Central Rockies and Wind River Mountains/Tetons
could continue through the day today...
...Much below normal temperatures should remain across much of the U.S.,
with Florida and the West Coast the exceptions...
A meandering frontal boundary is forecast to remain across the Gulf Coast
states and eventually slowly sink southward on Wednesday into Thursday.
Moist inflow from the Gulf of Mexico interacting with the front should
help create additional widespread showers and thunderstorms in those
areas, especially through tonight. An inch or two of rain, with locally
higher amounts possible, is expected for portions of eastern Texas into
the Lower Mississippi Valley and the Southeast. This rainfall and wet
antecedent conditions will lead to the potential for scattered flash
floods in those areas, and a Slight Risk of excessive rainfall as well as
a Flash Flood Watch are in place through tonight. Strong to severe
thunderstorms are also a possibility. Some showers and thunderstorms are
possible Wednesday, though are expected to lessen in coverage later
Wednesday into Thursday as the front gets suppressed.
Upper-level energy and cold temperatures will support continued snowfall
across higher elevations of the Wind River Mountains/Tetons and the
Central Rockies today. Another several inches of late-season snow are
possible especially in central Colorado. Snow should end by tonight as the
supporting upper-level energy moves east out of the region. However, some
light rain could continue in the Central Plains. Meanwhile in the
Northeast, persistent surface low pressure systems could cause light to
moderate precipitation through Wednesday. Mainly rain is expected, but
higher elevations could see some mix or light snow.
Another couple of days of cooler than normal temperatures are forecast for
the central and eastern U.S. behind the potent cold front and underneath a
cool high pressure system. This morning, Frost Advisories and Freeze
Warnings are once again in effect for portions of the Great Lakes region,
and also stretch into the Northern/Central Plains and Upper Midwest. High
temperatures are expected to be in the 40s in the Central High Plains,
with some areas 30+ degrees below normal today, and potential for record
low maximum temperatures to be set in the south-central U.S. That
potential for setting records of low maximum temperatures should spread to
the Carolinas on Wednesday. Meanwhile, Florida can expect warm
temperatures south of the front, and the West Coast will also see building
warmth with above normal temperatures over the next few days. One more day
of an Elevated Risk of fire weather is expected in northern California and
New Mexico.
Tate
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@gmail.com
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