…An active severe weather pattern to continue from the Upper Mississippi
Valley/Great Lakes, into the Ohio Valley and Mid to Lower Mississippi
Valley over the next few days…
…Heavy rain possible across the Northern Plains into Friday, with heavy
rains and flash flooding possible for portions of the Ohio and Tennessee
Valleys on Friday…
…Above to much above average temperatures to stretch from the Central to
Southern Plains to the east coast, with record high temperatures to
continue from South and East Texas into the Southeast and Florida. Below
average temperatures expected from the Northern Plains into the Northern
Rockies and Pacific Northwest…
A very favorable large scale pattern will persist across the mid section
of the nation over the next few days to support an active severe
thunderstorm pattern for a large region from the Great Lakes, south
through nearly all of the Mississippi Valley, Ohio Valley and Tennessee
Valley regions. Thunderstorms are beginning to enhance Thursday afternoon
across southern Minnesota, with this activity expected to continue to
blossom into the evening and overnight hours tonight as they push eastward
into the Upper Mississippi Valley and Great Lakes. This will be followed
by another round of thunderstorms Friday afternoon from the Upper
Mississippi Valley/Great Lakes, southward into the Mid Mississippi
Valley/Ohio Valley and Tennessee Valley regions. With both rounds of
thunderstorms, large hail, damaging winds and tornadoes will be possible.
In addition to the severe weather threat, heavy rains and flash flooding
are possible, especially on Friday across portions of the Ohio and
Tennessee Valley regions. By Saturday, the threat of severe weather will
shift south into the Southern Plains and eastward to the Mid-Atlantic with
calmer weather on tap from the Tennessee/Ohio Valleys, northward into the
Great Lakes/Upper Mississippi Valley.
Heavy rains also possible from northern South Dakota into North Dakota
Thursday night through Friday where an area of persistent light to
moderate rainfall intensity will occur. Severe weather not a threat
across these areas, with only a marginal risk of some flooding.
Large portions of the Lower 48 from the Central to Southern Plains, east
to the east coast will experience above the much above average
temperatures as the work week ends and the weekend begins. This large
region of above to much above average temperatures will produce Moderate
to Major Heat Risks across these regions. The greatest risks will be
across the southern tier from East and South Texas, eastward along the
Gulf Coast, into the Southeast and Florida. Across these regions, there
will be potential for both record high afternoon temperatures Friday and
Saturday and record high morning temperatures Friday, Saturday and Sunday
mornings.
In contrast to the much above average temperatures across much the central
to eastern U.S…below average temperatures expected from the Upper
Mississippi Valley into the Northern Plains, Northern Rockies and Pacific
Northwest Friday and Saturday. Below average temperatures will also be
developing by the end of the weekend from the Southwest, through the Great
Basin and persisting across the Northern Rockies and Northern Plains in
association with the next strong mid to upper level system moving inland
off the eastern Pacific.
Oravec
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
