…Heavy rain and severe weather expected across parts of the
south-central U.S. through Monday…
…Mountain snow moving across the Intermountain West and Rockies tonight
will begin to taper off on Monday as the next round of mountain snow and
wind quickly overspreads the Pacific Northwest early this week…
…Above average temperatures approaching record levels will build across
the Mississippi Valley, Great Lakes, and East Coast…
The ongoing active weather system over the south-central U.S. will
continue to trigger additional rounds of heavy rain and severe weather for
the remainder of today, with the heaviest rainfall expected to impact
northern Texas, central to eastern Oklahoma, northwestern Arkansas and
southern Missouri. Thunderstorms are likely to produce areas of damaging
winds, large hail, as well as a few tornadoes into Monday centered around
eastern Oklahoma as a warm and unstable airmass anchors over the region.
The Storm Prediction Center has issued an Enhanced Risk (level 3/5) of
severe thunderstorms in order to further highlight this potential. More
energy ejecting from the upper-level trough currently spreading mountain
snow across the Intermountain West will eventually consolidate a low
pressure system over the central High Plains by tonight. This low pressure
system will track northeastward across the central Plains followed by
another low pressure system to develop over the south-central Plains on
Monday. This second system is forecast to push a cold front farther
eastward Monday night, ending the heavy rain threat across Oklahoma but
shifting the heavy rain and severe weather threats into the Arklatex
region, Mid-Mississippi Valley and Midwest by the beginning of the
workweek.
The upper trough will usher colder than normal temperatures through much
of the western U.S. for the next couple of days with mountain snow passing
through the Intermountain region today, followed by the central and
southern Rockies on Monday. Meanwhile, a rather strong low pressure
system from the Pacific Ocean will quickly spread the next round of
coastal rain into the Pacific Northwest on Monday followed by a good dose
of mountain snow farther inland along with quite a bit of wind. The
mountain snow will reach into the northern Rockies Monday night into
Tuesday morning as the low pressure system redevelops over the northern
High Plains. The greatest chances (>80%) for over 8 inches of snowfall in
a 24-hour period is forecast over the northern Cascades on Monday and
northern Rockies on Tuesday. Be sure to prepare for winter driving
conditions if traveling throughout these elevated mountain ranges and stay
tuned to the latest local weather forecast.
Warmer and mostly dry conditions will be felt east of the Mississippi
River through early next week, besides rain chances throughout parts of
the Midwest and Great Lakes. A large high pressure system centered over
the Great Lakes is forecast to slide eastward and off the New England
coastline by Monday, ushering in warm southerly flow on the western
periphery. This will support widespread above average high temperatures
into the upper 60s and 70s from the central/southern Plains to the
Mid-Atlantic early this week, with 80s along the Gulf Coast States. When
compared to early November climatology, the Midwest and upper Ohio Valley
is expected to experience temperatures well above average. The anomalous
warmth will eventually spread to the East Coast by Election Day as showers
and thunderstorms ahead of the cold front continue throughout the Midwest
and Mississippi Valley.
Snell
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
