The Nation’s Weather

…There is a Slight Risk of excessive rainfall over parts of the Southern
Plains, the Lower Mississippi/Tennessee Valleys/Southeast/southern
Mid-Atlantic, and Ohio Valley/Central Appalachians on Tuesday…

…There is a Slight Risk of severe thunderstorms over parts of the
Southern Plains and Lower Mississippi Valley/Southeast on Tuesday and the
Southern High Plains on Wednesday…

A wave of low pressure over the Tennessee Valley will move to the Lower
Great Lakes by Thursday. One more day of moisture will flow northward out
of the Gulf of America and overrun the boundary, creating showers and
thunderstorms with heavy rain over parts of the Southern Plains.
Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive
rainfall over parts of the Southern Plains through Wednesday morning. The
associated heavy rain will create mainly localized areas of flash
flooding, with urban areas, roads, small streams, and low-lying areas the
most vulnerable.

Furthermore, severe thunderstorms will develop over parts of the Southern
Plains. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe
thunderstorms over parts of the Southern Plains through Wednesday morning.
The hazards associated with these thunderstorms are frequent lightning,
severe thunderstorm wind gusts, hail, and a few tornadoes. However, there
is an increased risk of hail, two inches or greater, over the region.

Moreover, a second area of heavy rain will develop over parts of the Lower
Mississippi Valley to the Southeast and southern Mid-Atlantic. Therefore,
the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over
parts of the Lower Mississippi Valley to the Southeast and southern
Mid-Atlantic through Wednesday morning. The associated heavy rain will
create mainly localized areas of flash flooding, with urban areas, roads,
small streams, and low-lying areas the most vulnerable.

Similarly, there will be a second area of severe thunderstorms over parts
of the Lower Mississippi Valley to the Southeast. Therefore, the SPC has
issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the
Lower Mississippi Valley to the Southeast through Wednesday morning. The
hazards associated with these thunderstorms are frequent lightning, severe
thunderstorm wind gusts, hail, and a few tornadoes.

Furthermore, a third area of heavy rain will develop over parts of the
Ohio Valley/Central Appalachians. Therefore, the WPC has issued a Slight
Risk (level 2/4) of excessive rainfall over parts of the Ohio
Valley/Central Appalachians through Wednesday morning. The associated
heavy rain will create mainly localized areas of flash flooding, with
urban areas, roads, small streams, and low-lying areas the most vulnerable.

In addition, rain and showers will develop over parts of the Upper Midwest
and the Mid-Atlantic on Tuesday. During the late afternoon and early
evening, upper-level energy will create scattered showers and
thunderstorms over the Central/Southern Rockies.

On Wednesday, the wave of low pressure moves into the Lower Great Lakes,
developing showers and thunderstorms over the Ohio/Tennessee Valleys and
the Mid-Atlantic. Furthermore, upper-level energy will aid in producing
showers and thunderstorms over parts of the Central/Southern Rockies and
Upper Midwest during the late afternoon and early evening. Overnight
Wednesday, rain will develop over parts of the Northeast.

A second wave of low pressure will also move southeastward out of the
Texas Panhandle to the Central Gulf Coast by Thursday morning. The system
will produce showers and severe thunderstorms over Southern High Plains.
Therefore, the SPC has issued a Slight Risk (level 2/5) of severe
thunderstorms over the Southern High Plains from Wednesday through
Thursday morning. The hazards associated with these thunderstorms are
frequent lightning, severe thunderstorm wind gusts, hail, and a few
tornadoes.

Meanwhile, a front over the Pacific will move near the Pacific Northwest
by Thursday morning, producing scattered rain over parts of the Northwest.

Ziegenfelder

Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php