…There is a Slight Risk of excessive rainfall over parts of the
Central/Southern Plains and the Middle/Lower Mississippi Valley on Friday
and Saturday…
…There is a Slight Risk of severe thunderstorms over parts of the
Central/Southern Plains and the Middle/Lower Mississippi Valleys on Friday
and Saturday…
…There is a Critical Risk of fire weather over the Southwest on Friday…
Upper-level energy extending from the Great Lakes to Northern New England
will slowly move into Southeastern Canada by Sunday. The system will
produce scattered rain and showers over the region through Sunday.
Meanwhile, a front extending from the Southern Plains into the Central
Rockies and southwestward into the Great Basin will be quasi-stationary
through Sunday. Moisture flowing northward out of the Gulf of America will
overrun the eastern part of the boundary, creating showers and
thunderstorms with 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 through
Saturday 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, there is a risk of the showers and thunderstorms being
severe. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe
thunderstorms over parts of the Central/Southern Plains and the
Middle/Lower Mississippi Valley through Saturday 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, mainly over the Central
High Plains.
The setup will be the same as on Saturday, with moisture flowing northward
over the Southern Central Plains and the Middle/Lower Mississippi Valley.
Showers and thunderstorms will continue to develop over the
Central/Southern Plains and the Middle/Lower Mississippi Valley, producing
heavy rain. Therefore, the WPC has issued a Slight Risk (level 2/4) of
excessive rainfall over parts of the Central/Southern Plains and the
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.
Likewise, there is a risk of the showers and thunderstorms being severe.
Therefore, the SPC has issued a Slight Risk (level 2/5) 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. However, there is an
increased risk of hail, two inches or greater over the area.
Elsewhere, upper-level energy will produce showers and thunderstorms over
parts of the Northern/Central Rockies through late Saturday night. In
addition, daytime heating will create scattered showers and thunderstorms
over parts of the Northern Intermountain Region on Friday and the Great
Basin on Saturday.
Further, a very dry and deeply mixed air mass will support relative
humidity reductions to around 10-15 percent (as low as 5-10 percent), and
sustained winds 15-20 mph across much of Arizona into New Mexico prompted
a Critical Risk of fire weather over the region on Friday.
Ziegenfelder
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
