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KF5JRV > WX 03.06.21 08:06l 61 Lines 2836 Bytes #999 (0) @ USBBS
BID : 16303_KF5JRV
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Subj: NWS USA WX Forecast - Jun 01
Path: IZ3LSV<IQ2LB<IK1NHL<CX2SA<EA2RCF<LU9DCE<LU4ECL<VK4TUB<NA7KR<N1URO<
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Sent: 210601/1135Z 16303@KF5JRV.#NWAR.AR.USA.NA BPQ6.0.20
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
348 AM EDT Tue Jun 01 2021
Valid 12Z Tue Jun 01 2021 - 12Z Thu Jun 03 2021
...Record-breaking heat found across the western United States to start
the month of June...
...Flash flooding and severe weather possible across portions of the Lower
Mississippi Valley and Southern Plains today...
...Scattered showers and thunderstorms advance eastward into the Ohio and
Tennessee valleys on Wednesday...
The western United States is wasting no time to start meteorological
summer as high temperatures are forecast to soar well above average from
the Desert Southwest to the Pacific Northwest through at least Thursday.
Simmering and record-breaking heat will be particularly likely today from
central California to northwest Oregon, before expanding into the northern
Great Basin on Wednesday. Highs are expected to reach into the triple
digits across the Sacramento and San Joaquin valleys of California, as
well as portions of southwest Oregon and the Desert Southwest. High
temperatures into the 90s should spread as far north as central Washington
and potentially north-central Montana on Wednesday. A few locations at
risk of experiencing daily record high temperatures today and Wednesday
include: Fresno and Redding, CA; Medford and Portland, OR; as well as
Spokane, WA and Boise, ID. Excessive Heat Warnings and Heat Advisories
have been issued for areas where heat-related illness is possible if
simple precautions are not taken.
Farther east, a weak area of low pressure currently located over northeast
Texas is forecast to slowly move east-northeast over the next few days and
enter the Ohio Valley by Thursday morning. Showers and thunderstorms will
likely develop along and ahead of an associated cold front as in influx of
moisture streams northward from the Gulf of Mexico. Thus, severe weather
and flash flooding will remain a concern today across the Lower
Mississippi Valley and portions of the Southern Plains. WPC has issued a
Slight Risk of Excessive rainfall that stretches from southern Missouri to
Louisiana, where chances of downpours leading to flash flooding are
greatest.
By Wednesday, showers and thunderstorms are forecast to shift into the
Ohio and Tennessee valleys, while also lingering throughout central and
southern Texas. A few thunderstorms will be capable of producing damaging
wind gusts and isolated tornadoes between northern Mississippi and
southwest Ohio. Isolated instances of flash flooding are also an
anticipated concern throughout the aforementioned regions due to high
rainfall rates and the potential for local rainfall amounts over 2 inches.
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
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