…Severe Weather and Excessive Rainfall concerns for parts of the
Upper/Middle Mississippi Valley and Great Plains through mid-week…
…Critical Fire Weather potential over portions of the Southern High
Plains on Wednesday…
…Cool and snowy in the Northwest; warmer across the Central and Eastern
U.S….
A pair of low pressure systems will bring showers and thunderstorm
activity to parts of the Central and Eastern U.S. respectively today. The
Central U.S. system will progress quickly through the Plains and into the
Upper/Middle Mississippi Valley today/tonight. The Storm Prediction Center
issued an Enhanced Risk (level 3/5) of Severe Thunderstorms for parts of
the Middle Missouri Valley into the Central Plains for this
afternoon/evening where very large hail, severe wind gusts and a few
tornadoes are expected. Some storms may produce heavy rain with high
rates, which is why a Slight Risk (at least 15%) of Excessive Rainfall
leading to Flash Flooding is in effect for parts of southeastern Kansas
into northeastern Oklahoma. Another area of low pressure is forecast to
develop out of the Southern Plains, and generate another round of storms
across the Plains and Mississippi Valley on Wednesday. SPC issued another
Enhanced Risk of Severe Thunderstorms over much of central Kansas and
northern Oklahoma while we have a broader Slight Risk of Excessive
Rainfall extending from northeastern Texas up into eastern Nebraska and
much of Iowa. A few tornadoes, very large hail and damaging winds are
possible from any severe storms that occur.
Meanwhile, a slow moving mid-level low anchored over the Northwest will be
the reason why they experience below average temperatures over the next
few days. Embedded shortwave energy will support high elevation snow for
the Cascades and Northern Rockies, where snowfall accumulations will be in
the general range of 6-12 inches with isolated higher amounts possible by
Thursday morning. An amplifying ridge over the Mid-Atlantic and Southeast
will support above average temperatures across most of the eastern third
of the country over the next several days. Strong southerly flow into the
Plains beneath the right exit region of the upper trough will promote
warming across the region over the next few days. Lee cyclogenesis will
contribute to dry and windy conditions across portions of the Southwest
and Southern High Plains, which will support a Critical Risk of Fires on
Wednesday.
Kebede
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
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