…Another day of heavy rain and severe weather expected across the
central U.S. before shifting east into the Arklatex, Mid-Mississippi
Valley and Midwest by Monday night…
…Mountain snow moving across the Intermountain West and Rockies today
will begin to taper off on Monday as the next round of mountain snow and
wind quickly overspreads the Pacific Northwest on Monday…
…Above average temperatures approaching record levels will shift east
from the Plains today towards the Mississippi Valley by Monday with no
rain in sight along the 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
central to eastern Oklahoma into portions of northwestern Arkansas and
southern Missouri. 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
Monday night.
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. 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 entering 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 by Monday, with 80s along the Gulf Coast States. When
compared to early November climatology, the Midwest is expected to
experience temperatures well above average on Monday. The anomalous
warmth will then spread across the Ohio Valley into the Great Lakes by
Monday night into early Tuesday as showers and thunderstorms ahead of the
cold front reach into the Midwest.
Kong/Snell
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php