…There is a Slight Risk of severe thunderstorms over parts of the
Central Plains on Friday…
…There is a Slight Risk of excessive rainfall over parts of the Central
Plains and Middle Mississippi Valley on Friday and the Central/Southern
Plains and Middle/Lower Mississippi Valley on Saturday…
…There are Excessive Heat Warnings and Heat Advisories over parts of
Central/Southern California, Southwest, and the Great Basin…
Upper-level energy, a weak front, and a surge of moisture moving northward
over the Southern Plains into the Central Plains will trigger showers and
severe thunderstorms over parts of the Central Plains. Therefore, the SPC
has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of
the Central Plains through Saturday morning. The hazards associated with
these thunderstorms are frequent lightning, severe thunderstorm wind
gusts, hail, and a few tornadoes. In addition, there is an added threat
of hail, two inches or greater, over central Nebraska and north-central
Kansas.
Furthermore, the showers and thunderstorms will create heavy rain over
parts of southeastern Nebraska, northeastern Kansas, southwestern Iowa,
and northwestern Missouri. Therefore, the WPC has issued a Slight Risk
(level 2/4) of excessive rainfall over parts of the Central Plains/Middle
Mississippi Valley. 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.
On Saturday, as the front progresses eastward across the Plains into the
Mississippi Valley, showers and strong to severe thunderstorms will
develop over parts of the Central/Southern Plains and the Middle/Lower
Mississippi Valley. Therefore, the SPC has issued a Marginal Risk (level
1/5) of severe thunderstorms over parts of the Central/Southern Plains and
the Middle/Lower Mississippi Valley from Saturday through Sunday morning.
The hazards associated with these thunderstorms are frequent lightning,
severe thunderstorm wind gusts, hail, and a few tornadoes.
The showers and thunderstorms will also develop heavy rain over parts of
the Central/ Southern Plains and Middle/Lower Mississippi Valley.
Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive
rainfall over parts of the Central/Southern Plains and Middle/Lower
Mississippi Valley from Saturday through Sunday 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, an upper-level low over the Great Lakes/Northeast will help
produce rain over parts of the Great Lakes and the Northeast through
Sunday. Another area of upper-level energy will help create showers and
thunderstorms over parts of the Southeast through Sunday.
Furthermore, upper-level ridging over California and the Southwest helps
spawn Excessive Heat Warnings and Advisories over parts of
Central/Southern California, the Southwest, and the Great Basin.
Visit www.weather.gov/safety/heat and check local media and government
websites for information on cooling centers. Limit outdoor activity and
stay hydrated.
Ziegenfelder
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php