…Heavy rains, severe weather and flash flooding possible across the
Southern Plains to the Lower Arkansas River Valley…
…Another shot of wintry weather on tap from the Upper to Eastern Great
Lakes into northern New York State and New England…
…Much above average temperatures likely across much of the central to
eastern U.S…
A strong slow moving mid to upper level low over the Southwest Tuesday
afternoon will be pressing steadily eastward tonight through Wednesday
across the Southwest, and into the Southern High Plains on Thursday.
This system is currently relatively moisture starved, resulting in only
light to moderate rain and snow amounts across large sections of Arizona,
New Mexico and far southern areas of Utah and Colorado. As this system
pushes eastward into the Southern High Plains on Thursday, much higher
moisture values currently across east Texas into the Gulf will be drawn
northward into this system. This will support an increasing area of
rainfall beginning early Thursday morning across central Texas into
central to eastern Oklahoma, spreading northeastward later Thursday across
Arkansas, Missouri, far western Tennessee, far western Kentucky into
southern Illinois and southern Indiana. Heavy rains likely across these
areas, leading to isolated instances of flash flooding. In addition,
thunderstorms in this area of heavy rains will also bring the threat of
severe weather across central to eastern Texas, southern Arkansas into
central to northern Louisiana and far western Mississippi.
More winter weather on tap for the northeast tier of the nation in the
wake of the strong front and snow squalls that pushed across portions of
the Northeast earlier Tuesday. The next storm system pushing out of south
central Canada into the Upper Great Lakes is already producing
accumulating snows across the Upper Great Lakes from the eastern Upper
Peninsula into the northern Lower Peninsula of Michigan. This next storm
is expected to push quickly east southeastward across the Upper Lakes into
northern New York State Tuesday night/early Wednesday and then across
northern New England later Wednesday. An area of accumulating snows
likely with this next low across western to Upstate New York into central
to northern New England, while lake effect snows are likely in the wake of
the low downwind of all of the Lakes. The heaviest forecast snow totals
in excess of 6 inches are possible from the Adirondacks of northern NY
State and into the Green and White Mountains of VT and NH. Snowfall
totals of 2-4″+ possible in the favored lake effect snow regions downwind
of Lake Superior, northern Lake Michigan, eastern Lake Erie and Lake
Ontario,
Temperature wise, much of the central to eastern U.S., save for northern
NY State into New England, will see much above average temperatures over
the next few days. The greatest temperature anomalies are forecast
Wednesday across the Northern to Central Plains into the Upper
Mississippi Valley and the Mid-Atlantic. Across these regions, high
temperatures may reach 10 to 15+ degrees above average. Even warmer than
average temperatures expected on Thursday across the Northern to Central
Plains/Upper Mississippi Valley region where high temperatures of 20 to 25
degrees above average are possible. Several record high temperatures are
possible on Thursday over southern Minnesota into much of Wisconsin. High
temperatures 10 to 15 degrees above average also possible Thursday across
the Lower Mississippi Valley. Below average temperatures over the next
few days will be confined to the Southwest into the Southern High Plains,
underneath the above mentioned strong mid to upper level low, and over far
northern NY State into New England associated with the above mentioned
winter weather.
Oravec
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
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