Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 AM EDT Sat Oct 29 2022

Valid 12Z Sat Oct 29 2022 - 12Z Mon Oct 31 2022

...A low pressure system will bring a quick round of heavy rain and severe
thunderstorms across the lower Mississippi Valley through tonight

...The low pressure system will then spread unsettled weather into the
eastern U.S. Sunday and into Monday...

...Approaching frontal system will spread rain and high elevation snow
into the Pacific Northwest...

A low pressure system tracking through the southern tier of the country
will trigger additional showers and thunderstorms across the region today.
 The strongest thunderstorms with heavy downpours are forecast to be near
the central Gulf Coast region where a warm front and a cold front meet. 
The threat of severe thunderstorms decreases farther to the north across
the Mississippi Valley.  However, a swath of moderate to heavy rain is
expected from eastern Arkansas into northwestern Mississippi where the low
pressure center is forecast to move through.  The rain will nonetheless
help to alleviate the ongoing moderate to severe drought across the
region.  While locally heavy rain is expected, the progressive nature of
the low pressure system will limit the threat of flash flooding.  By
Sunday, much of the active weather will shift northeastward into the
Tennessee and Ohio Valleys.  The threat of heavy rain and strong
thunderstorms are expected to gradually decrease in these areas as the low
pressure system slowly weakens.  By Monday morning, rain and a few
thunderstorms should reach into the central and southern Appalachians as
well as the lower Great Lakes.

Over the Pacific Northwest, the next round of precipitation is forecast to
reach the area on Sunday as a frontal system edges closer from offshore. 
The precipitation will likely become heavy across the higher terrain of
the Olympic Mountains and the northern Cascades Sunday night where snow is
possible at the highest elevations.  Some of the precipitation could reach
into the northern Rockies by Monday morning.

The majority of the U.S. mainland should enjoy tranquil weather conditions
for this weekend into Monday as a couple of strong high-pressure systems
dominate the Intermountain West as well as the Northeast. Above-average
high temperatures are forecast to span the Northern Tier from the Plains
to New England, with highs into the 50s and 60s as we head into Halloween.

Kong


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