…Heavy rain, flash flooding and severe weather threat associated with an
intensifying low pressure system will sweep across the Arklatex region
today, reaching into the interior South tonight…
…The low pressure system will bring an expanding heavy rain and high
wind threat into much of the eastern U.S. on Thursday with severe weather
threat across 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 morning…
A low pressure system is currently consolidating over southern Texas as a
dynamic upper-level trough is getting ready to move off northern Mexico
and then vigorously interact with moisture returning from the Gulf of
Mexico. The clusters of strong to severe thunderstorms that have already
formed and impacted the western Gulf states are just a precursor of what
the system may produce later today when it is forecast to intensify
rapidly with thunderstorms erupting over the Arklatex region. These
thunderstorms are expected to contain very heavy rain, hail, high winds,
and the possibility of tornadoes across the interior South through tonight
as a potent cold front is forecast to sweep across from west to east. The
low pressure system itself is forecast to intensify, expand and track
toward the northeast for the next couple of days, with moderate to heavy
rainfall engulfing much of the eastern U.S. by Thursday. The heaviest
rainfall is expected to impact the central to eastern Gulf coast region
today through Thursday morning, with another heavy rain axis from the
Arklatex region to the Midwest following the center of the intensifying
low pressure system. The low pressure system is forecast to intensify and
expand further Thursday night into Friday morning, bringing high winds
into much of the eastern U.S. as well as the Great Lakes, Midwest and the
Ohio Valley. Thunderstorms should exit the Southeast by Friday morning as
the cold front moves off the coast. However, the Mid-Atlantic and
virtually the entire Northeast will likely be engulfed by moderate to
heavy rain along with high winds especially just ahead of the potent cold
front trailing south from the center of the intense and expanding low
pressure system.
Outside of the intensifying low pressure system, relatively quiet weather
is expected for the next couple of days with a stable upper ridging
building into the western U.S. Scattered rain and snow showers are
expected to fall across the northern Rockies and northern High Plains
today before reaching into the northern Plains as a clipper system swings
across these areas. Light precipitation is forecast to reach the Pacific
Northwest Thursday night with the arrival of the next Pacific system.
Otherwise, improvement in the fire weather threat is expected across the
southern High Plains where elevated fire danger is confined to the Texas
Big Bend today, followed by portions of the central Plains on Thursday.
Kong
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php