…Locally heavy snow and snow squalls possible for the Great Lakes and
Northeast through Wednesday…
…Flooding rain and severe thunderstorms possible from the southern
Plains to the Mid/Lower Mississippi Valley Wednesday into Thursday…
…Well above average temperatures expected across much of the Central and
Eastern U.S., while below average temperatures linger in southern
California and the Southwest…
A slow moving low pressure system will gradually push east across the
Southwest and into the southern Plains over the next few days. This system
will produce some wintry weather in the Four Corners states, but a lack of
moisture may limit precipitation amounts. The heaviest snow is expected
late tonight through Thursday in the higher elevations in northern New
Mexico and southern Colorado where more than 6 inches of snow could fall.
As the system emerges in the Plains Wednesday into Thursday, it will
trigger widespread showers and thunderstorms from the southern Plains to
the Mid/Lower Mississippi Valley. There will be a risk of severe
thunderstorms in Texas, and potential storm hazards could include hail and
damaging wind gusts. Isolated to scattered instances of flash flooding
will also be possible from Central/North Texas to the Mid-Mississippi
Valley, especially in urban and poor drainage areas and places with
training/repeat convection.
While the slow low impacts the south-Central U.S., a swift moving Clipper
type low pressure system will swing across the Great Lakes and Northeast,
bringing wintry weather to these regions. A leading cold front will sink
south across the Northeast today, then the main low will dip into the
northern Great Lakes tonight, swing across the northeast on Wednesday, and
push offshore Wednesday night. Snow squalls will be possible as these
features move across the Great Lakes and Northeast, which would create
intense bursts of heavy snowfall with gusty winds, resulting in low
visibility and dangerous driving conditions. Moderate to locally heavy
snow accumulations are expected from the Great Lakes into New England
today through Wednesday.
Temperatures will be below average across southern California and the
Southwest under the influence of the upper low, and below average
temperature are also expected across portions of the Great Lakes and
Northeast after a cold front sinks south into these regions today.
Sandwiched between the Southwest and Northeast corners of the nation, much
of the Central and Eastern U.S. will experience well above average
temperatures through Thursday. The highest anomalies will be in the
north-Central U.S. where highs are forecast to be 15-25 degrees above
normal, which could challenge a few daily high temperature records in the
northern Plains and Upper Midwest.
Dolan
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
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