…There is a Slight Risk of excessive rainfall over parts of the Southern
High Plains/Southern Rockies/Southwest and southern Mid-Atlantic as well
as Eastern Gulf Coast, on Wednesday and Eastern Gulf Coast on Thursday…
On Wednesday, a front along the Northeast Coast to Central Appalachians
and Tennessee/Lower Mississippi Valleys will have the northern portion of
the boundary dissipate east of the Northeast Coast by Thursday. The
southern part extending from the southern Mid-Atlantic/Southeast/Central
Gulf will become quasi-stationary along the Gulf and Southeast Coast by
Thursday evening and dissipate by Friday morning. Showers and
thunderstorms will develop along the boundary from the southern
Mid-Atlantic to the Southeast/Eastern Gulf Coast and will produce heavy
rain over parts of the southern Mid-Atlantic and Eastern Gulf Coast.
Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive
rainfall over parts of the southern Mid-Atlantic and a second area over
the Eastern Gulf Coast through Thursday 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.
On Thursday, showers and thunderstorms with heavy rain will develop over
parts of Florida. Therefore, the WPC has issued a Slight Risk (level 2/4)
of excessive rainfall over parts of the Eastern Gulf Coast from Thursday
through Friday 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. Further, showers and
thunderstorms will develop over parts of the Central Gulf Coast on
Wednesday and Thursday.
In addition, another front will move southward out of Eastern Canada by
Wednesday afternoon into the Upper Mississippi Valley/Great Lakes and
advance southeastward off the Northeast Coast by Friday. On Thursday, the
system will produce showers and strong to severe thunderstorms over the
Upper Mississippi Valley/Great Lakes on Wednesday and over the Northeast
and Great Lakes/Middle Mississippi Valley.
Meanwhile, a front moving over the Pacific Northwest on Wednesday advances
to the Northern High Plains/Northern Rockies and into the Great Basin by
Friday. On Wednesday, the boundary will produce showers and strong to
severe thunderstorms over parts of the Northern High Plains/Northern
Rockies/Northern Intermountain Region. Furthermore, as the front moves
into the Northern High Plains on Thursday, showers and strong to severe
thunderstorms will also occur over the region.
Additionally, on Wednesday, an upper-level low along the Central/Southern
California Coast will produce scattered showers and strong to severe
thunderstorms over parts of the Great Basin. Furthermore, upper-level
energy over the Southern Rockies with moisture streaming northwestward
over the Southern High Plains/Southern Rockies and Southwest will produce
showers and thunderstorms with heavy rain over the area. Therefore, the
WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts
of the Southern High Plains/Southern Rockies and Southwest through
Thursday 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.
Showers and thunderstorms will continue on Thursday over the
Central/Southern High Plains, Central/Southern Rockies, and Southwest.
Ziegenfelder
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
