Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
251 PM EDT Mon Sep 25 2023

Valid 00Z Tue Sep 26 2023 - 00Z Thu Sep 28 2023

...Wet weather expected across portions of the Pacific Northwest, Upper
Mississippi Valley into the Mid-West and much of Florida into southern
Georgia...

...Below average temperatures expected across the Northwest and from
Southern New England into the Mid-Atlantic...

...An end to the recent string of record highs over the Southern Plains,
but above average temperatures to persist through the Rockies, Southwest,
Central to Southern Plains and Middle to Lower Mississippi Valley...


A strong area of low pressure across the northeast Pacific is expected to
keep the weather pattern cool and wet over the next few days across the
Pacific Northwest.  The current area of rain stretching from northwest
California, northward across western Oregon and western Washington state
will be followed by a second area of precipitation moving into the Pacific
Northwest on Tuesday night into early Wednesday morning.  These periods of
rainfall are much needed as much or Oregon and Washington state are
experiencing severe to extreme drought conditions.  In addition to the
rainfall, temperatures will be below average with highs 10 to 20 degrees
below average from northern California into much of Oregon, Washington and
northern Idaho.  Below average temperatures also expected to persist from
southern New England, south into the Mid-Atlantic as a nearly stationary
area of low pressure off the Mid-Atlantic coast keeps these areas in
clouds and occasional showers.

A separate slow moving mid to upper level low will also keep wet
conditions from portions of the Upper Mississippi Valley into the Mid-West
as it moves slowly southeastward over the next few days.  The clouds and
rainfall across these area will also keep temperatures slightly below
average. 

In contrast to the cooler than average temperature regions, above average
temperatures will persist across the Rockies, Southwest, Central to
Southern Plains and into the Middle to Lower Mississippi Valley.  While
temperatures will be as much as 10 degrees above average across these
regions, no record highs are expected, bringing an end to the recent
string of record highs across portions of the Southern Plains.

Wet weather also likely over the next few days across nearly all of
Florida into southern Georgia as an upper level low sits across the Gulf
of Mexico and pumps above average moisture values northward.  These heavy
rains may produce isolated areas of flash flooding, especially in
urbanized regions.

Oravec

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