…Snow develops across the upper Midwest to the upper Great Lakes today
as severe weather and heavy rain threat emerge across the Mid-South…
…More wet weather expected for the Pacific Northwest through Monday
before a drying trend sets in…
…Fire weather threat today across large portions of the Central to
Southern Plains…
A fairly deep low pressure system will be the main weather maker for the
eastern two-thirds of the country for the next couple of days as we head
into the new week. This system is currently consolidating over the
northern and central Plains with two separate centers of circulation as an
upper-level trough moves off the Rockies into the High Plains. Enough
cold air will be available to support moderate to locally heavy snow
mainly north of the low center across the upper Midwest today. The snow
will become more widespread tonight across the upper Great Lakes region as
the northern low becomes the main system. Upwards of 6 to 8 inches of new
snow with locally high amounts can be expected across the upper Midwest to
upper Great Lakes.
Farther south, a second low pressure center along a southern front will
help organize and trigger showers and thunderstorms this morning from
Missouri eastward into the Ohio Valley. A better chance of strong to
severe thunderstorms will arrive by late this afternoon into tonight
across the Deep South as the cold front associated with the northern low
catches up and merges with the southern front. The primary threats will
be damaging thunderstorm wind gusts, large hail, along with possible
tornadoes. The merged system will deliver a round of snow from upstate
New York to interior New England on Monday while scattered showers and
thunderstorms move through a large portion of the eastern U.S. before
colder and drier air will be ushered into the entire region behind a cold
front.
Meanwhile, moisture from a relatively active Pacific weather pattern will
continue to send moderate to heavy rain into the state of Washington today
and into Monday. By Monday night into Tuesday morning, the offshore
fronts are forecast to weaken and lift more northward toward western
Canada, leading to a drying trend for the Pacific Northwest. Much of the
rest of the western U.S. will be dry with a warming trend continuing
through the next couple of days under the influence of an upper-level
ridge. The warm air will spread into much of the Plains on Monday with
little precipitation despite the presence of a pair of fronts. Much of
the Great Lakes and Northeast will remain cold due to the passage of the
aforementioned low pressure system. Some wet snow this morning in Maine
will move off to the east behind a front as some lake-effect snow across
upstate New York should gradually taper off today with the arrival of a
high pressure system.
Kong
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
