Weather Thursday April 11 2024 Heavy weather in the east and southeast , fair in the midwest and western states

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Heavy rain, flash flooding and severe weather threat associated with a
strengthening storm system to continue this afternoon and tonight in the
Southeast...
...Powerful storm system to foster heavy rain and high wind potential over
much of the eastern U.S. on Thursday; severe weather and flash flood
threats forecast in parts of the Southeast and upper Ohio Valley...
...High winds along with widespread moderate to heavy rain expected to
impact the entire Eastern Seaboard into the Great Lakes Thursday night
into Friday; warming up in the West...
The second half of the work-week features an impressive early-mid April
storm system, currently tracking through the Deep South, that will head
northeast through the Lower Mississippi Valley this evening and head for
both the Tennessee and Ohio Valleys come Thursday morning. The central
Gulf Coast is the focus for the most dangerous weather this afternoon and
evening as organized thunderstorms track east through the region. The
Storm Prediction Center and Weather Prediction Center both issued Moderate
Risks for severe storms and Excessive Rainfall respectively, implying that
not only is flash flooding anticipated for parts of the central Gulf
Coast, but so are severe thunderstorms capable of producing tornadoes,
damaging wind gusts, and large hail. Meanwhile, periods of rain will be
common from the ArkLaTex and Ozarks this afternoon to the Ohio Valley and
Lower Great Lakes overnight.
By Thursday morning this strengthening storm system will direct its shield
of rain north into the eastern Great Lakes and Mid-Atlantic, then finally
into the Northeast by Thursday afternoon. Numerous showers are also still
expected in parts of the Lower Mississippi Valley and for much of the Ohio
and Tennessee Valleys. In terms of severe weather the upper Ohio Valley is
most at-risk, as evident with an expansive Slight Risk area and a smaller
Enhanced Risk area that is focused in eastern Ohio and western West
Virginia. Tornadoes and damaging winds are the primary modes of severe
weather of greatest concern through Thursday afternoon. Farther south, the
storm's cold front will act as a trigger for severe storms from the
Mid-Atlantic on south to northern Florida. SPC has a Slight Risk that
stretches from southern South Carolina on south to the Tampa, FL metro
area. There is also the threat for Excessive Rainfall and resulting flash
flooding from the Upper Ohio Valley on east through the northern
Mid-Atlantic. WPC has a large Slight Risk area in place for portions of
these regions, with metro areas such as Pittsburgh, Washington D.C.,
Baltimore, and Philadelphia all within the Slight Risk zone. In addition
to the rain and thunderstorms, gusty winds will be felt across much of the
eastern half of the U.S., especially in the central Appalachians and parts
of the Southeast where Wind Advisories are in place for tomorrow. By
Friday, while the severe threat backs down, there is a Slight Risk for
Excessive Rainfall in portions of northern New Hampshire and western
Maine. Gusty winds, as well as widespread showers are anticipated in the
Great Lakes and Mid-Atlantic during the day Friday.
In the West, a tranquil weather pattern this afternoon and through
Thursday along the West Coast will conclude as the next Pacific storm
system delivers showers and mountain snow to the Pacific Northwest by
Thursday night. The storm system dive south along the West Coast and a
frontal boundary will set up over the Northern Rockies. This will lead to
hit-or-miss showers from the Sierra Nevada and Oregon Cascades on east
through most of the northern Rockies Friday afternoon. Temperature-wise,
an expansive swath of unusually warm temperatures for mid-April will grow
east from the West Coast and the