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KF5JRV > WX 29.04.21 13:16l 72 Lines 3192 Bytes #999 (0) @ USBBS
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Subj: NWS USA WX Forecast - Apr 29
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Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
340 AM EDT Thu Apr 29 2021
Valid 12Z Thu Apr 29 2021 - 12Z Sat May 01 2021
...There is a Slight risk of severe thunderstorms from parts of the
northern Mid-Atlantic to the Tennessee Valley/Southern Appalachians
through Friday morning...
...There is a Slight risk of excessive rainfall over the ArkLaTex region
through Friday morning.
...There is a chance for record-breaking high minimum temperatures over
the East and below-average temperatures over the Southern Rockies/Southern
High Plains...
A slow-moving front, spanning from the Northeast westward to the Ohio
Valley and then southwest to the Middle/Lower Mississippi Valley and the
Southern Plains will move off the East and Gulf Coast by Saturday.
Showers and thunderstorms will develop along and ahead of the boundary
from the Northeast to the lower Mississippi Valley through early Friday
morning. The SPC has issued a Slight risk of severe thunderstorms from
parts of the northern Mid-Atlantic to the Tennessee Valley/Southern
Appalachians through Friday morning. The main hazards with the severe
thunderstorms are frequent lightning, high wind gusts, hail, and possible
tornadoes. The thunderstorms will have heavy rain associated with them.
The WPC has issued a Slight risk of excessive rainfall over the ArkLaTex
region through Friday morning. The heavy rain will produce scattered
areas of flash flooding, with urban areas, roads, and small streams being
the most vulnerable.
Rain will develop over the Northeast/Mid-Atlantic on Friday morning,
extending into parts of the Ohio Valley during the afternoon on Friday.
The rain will end over the Mid-Atlantic/Ohio Valley by Friday evening.
Wet snow will develop over parts of Upstate New York on Friday night. The
rain will taper off over New England by Saturday morning as light snow
moves into the higher elevations of Northern New England. Also, on
Friday, the showers and thunderstorms will continue over parts of the
Lower Mississippi Valley and the Southern Plains through Saturday morning.
In the warm sector, south of the front, there is a chance for
record-breaking high minimum temperatures over the Mid-Atlantic/Ohio
Valley on Thursday morning.
Meanwhile, an upper-level low over the Southern Rockies will move into
Northern Mexico on Thursday. The cold air associated with the upper-level
low will allow temperatures to be 10 to 20 degrees below average over
parts of the Southern Rockies/Southern High Plains. Elsewhere, a front
moving onshore over the Pacific Northwest on Friday afternoon will produce
light rain over parts of the Northwest overnight Friday.
Ziegenfelder
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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