The Nation’s Weather

…Wet weather and below average temperatures expected the next few days
from the Central to Southern Plains, east through the Lower Mississippi
Valley, Ohio Valley, Southern to Central Appalachians, Southeast and
Mid-Atlantic…

…Much above average temperatures to build late week into this weekend
from California into the Great Basin as an early season heatwave
develops…

A wet weather pattern will continue over the next few days across a large
portion of the Lower 48 from the Central to Southern Plains, east into the
Lower Mississippi Valley, Ohio Valley, Southern to Central Appalachians,
Southeast and Mid-Atlantic. Rains currently falling from the Lower Lakes
into the Mid-Atlantic Wednesday afternoon will shift northeastward into
the Northern Mid-Atlantic, New York State and New England Wednesday night
into Thursday. At the same time, the next round of heavy rains will
continue to expand eastward across the Central and Southern Plains tonight
and into the Lower Missouri Valley, Ohio Valley and Lower Mississippi
Valley Thursday into Friday, and across the Central to Southern
Appalachians and into the Mid-Atlantic by Friday afternoon/evening.
Thunderstorms are possible with this broad area of potentially heavy rains
with severe weather also possible from the Central to Southern Plains,
east into the Lower Mississippi Valley and Southeast over the next two
days. Across these region, large hail and high winds have the greatest
probability of occurring, with tornadoes a lesser probability. For most
of these areas, this is a continuation of a wet pattern that has been in
place for much of the month with much above average observed precipitation
having occurred, especially from the Central to Southern Plains into the
Lower Mississippi Valley. This next round of potentially heavy rains is
in response to a broad mid to upper level closed low centered over the
Upper Mississippi Valley, with its effects stretching far to the south
and east of the circulation center. In addition to the potential for
additional heavy rains across these regions, high temperatures will remain
below average for the end of the work week and into the weekend for these
areas. There are signs, however, of a pattern change by the end of the
weekend into next week, with drier conditions from the central to eastern
U.S., and increasingly wet conditions across the Rockies into the Northern
Plains.

While wet and cool conditions stretch across large portions of the central
and eastern U.S. over the next few days, the opposite will be true for
much of the west. Much above average temperatures expected to build from
California into the Great Basin Thursday, Friday and Saturday, before
cooler temperatures begin to move in later in the weekend into next week
in response to the above mentioned pattern change on tap for the West. A
few record or near record high temperatures possible Friday across
California into southern Nevada, with a more widespread record high
potential on Saturday from California into Nevada, eastern Oregon, central
to southern Idaho, western Montana and northern Utah. This early season
heatwave will be producing moderate to major heat related impacts across
these regions. Heat advisories are currently in effect across much of
central to northern California, while Extreme Heat watches are in effect
for southern Nevada into southeast California, with these advisories and
watches affecting nearly 15 million people.

Oravec

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