| |
KF5JRV > WX 04.05.21 14:36l 66 Lines 3161 Bytes #999 (0) @ USBBS
BID : 14542_KF5JRV
Read: GUEST
Subj: NWS USA WX Forecast - May 04
Path: IZ3LSV<IQ2LB<IK1NHL<CX2SA<OK2PEN<NA7KR<N1URO<K3CHB<K5DAT<N7HPX<KF5JRV
Sent: 210504/1135Z 14542@KF5JRV.#NWAR.AR.USA.NA BPQ6.0.20
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
352 AM EDT Tue May 04 2021
Valid 12Z Tue May 04 2021 - 12Z Thu May 06 2021
...Severe thunderstorms and flash flooding likely across the Deep South
today...
...Unsettled weather to be found throughout much of the eastern U.S. until
a cold front exits the region on Wednesday...
...Dry and unseasonably warm temperatures continue in the West...
The main weather story for today is located across the Deep South, where
severe thunderstorms and flash flooding are likely to cause impacts. A
cold front responsible for the active weather currently stretches from the
Ohio Valley to the Southern Plains. Several areas of showers and
thunderstorms are already found ahead of this frontal boundary, with new
convection expected later today as it progresses east-southeast. Ample
moisture ahead of this cold front will allow for thunderstorms to
strengthen rapidly and produce downpours capable of dropping several
inches of rain. This amount of rain in a short amount of time can lead to
rapid water rises in low-lying areas. Additionally, some locations across
the Deep South have experienced a wet spring thus far; therefore,
additional rain may magnify flooding concerns. WPC has highlighted
portions of southern Mississippi and southwest Alabama as having a
Moderate Risk of excessive rainfall/flash flooding. Instances of flash
flooding are also possible farther north and into the Tennessee Valley.
Along with heavy rain, several thunderstorms traversing the Deep South
will have the capability of producing damaging wind gusts, large hail, and
isolated tornadoes. The Storm Prediction Center has issued an Enhanced
Risk of severe thunderstorms across the Deep South and lower Tennessee
Valley. Damaging wind gusts are the most likely hazard associated with the
clusters of developing thunderstorms, especially from southern Mississippi
into west-central Alabama.
Areas of scattered showers and thunderstorms will also be found across
much of the eastern United States today as a warm and humid airmass
remains in place. There is an outside chance a few of these storms could
turn severe in the Ohio Valley and Mid-Atlantic. By Wednesday, the
aforementioned cold front will swing through the East Coast and usher in
much cooler and drier weather, with the only remaining showers lingering
across northern New England Wednesday night.
Throughout western and central sections of the country, a weak impulse of
upper-level energy will cross the Northern Rockies today before entering
the central Plains on Wednesday. Light rain and mountain snow will
accompany the system. Meanwhile, no precipitation is expected across the
West as upper-level ridging remains situated over the region. High
temperatures are forecast to reach the 80s and 90s (10 to 20 degrees above
average for this time of year) across the Desert Southwest and San
Joaquin/Sacramento valleys today, with even warmer temperatures expected
on Wednesday.
Snell
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
Read previous mail | Read next mail
| |
