Strong Thunderstorms Isolated Hail, Severe Wind, Heavy Rain, Flash Flooding +Winter Weather Alaska

Heavy Rain and Flooding Threat in the Central U.S.; Winter Weather in Northern Alaska
Strong thunderstorms and heavy rain may produce flash flooding across the south-central Plains and lower Mississippi Valley today. The North Slope in Alaska will see the potential for wintry weather through today with ice accumulations possible on roadways. Incoming storms will bring long duration rainfall and strong winds to most of Southcentral Alaska through Friday
Strong thunderstorms, with an isolated hail and severe wind threat,
are possible across parts of southern Oklahoma and northern Texas to
the Arklatex this afternoon and evening. Isolated severe
thunderstorms will also be possible across eastern Colorado and the
adjacent High Plains.

...Southern Oklahoma/North Texas to ArkLaTex...
Showers/thunderstorms are prevalent this morning across
northern/eastern Oklahoma into the Ozarks to the north-northeast of
a warm front. Within a belt of moderately strong northwesterly flow
aloft, a shortwave trough will continue to dig southeastward from
the south-central Plains toward the Ozarks by this evening. Related
dynamical response and the early day convection will shunt the front
southward later today, with ample heating/moderate destabilization
on the southwest flank of this boundary.

While mid-level temperatures are seasonally warm (-4C at 500 mb),
and lapse rates are not that steep, severe hail and damaging wind
gusts can be expected with the more robust convection as general
intensification occurs by mid/late afternoon. A few initial
supercells may occur, and some tornado risk could also exist with
convection immediately along the boundary and east of the weak
surface front. Clustering/upscale-quasi-linear growth should occur
by early evening as storms progress southeastward and continue to
pose a damaging wind risk for a time this evening.

...Eastern Colorado and adjacent High Plains...
The large-scale pattern is not expected to change appreciably as
upper ridging will hold across the southern/central Rockies.Potentially life-threatening flooding setup puts millions on alert from Plains to Deep South
Rounds of torrential rain and thunderstorms from the Plains to the Deep South are leading to a potentially dangerous setup that could produce life-threatening flash flooding on Thursday.

It’s an active weather pattern that the FOX Forecast Center said would remain in place across the region through the rest of the workweek and into the #LaborDay holiday weekend.
sources
weather gov
goes star
NWS