Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 PM EDT Tue Oct 26 2021

Valid 00Z Wed Oct 27 2021 - 00Z Fri Oct 29 2021

...The second phase of a nor'easter expected to bring high winds and heavy
rain to coastal New England tonight into Wednesday...

...An anomalous low pressure system expected to trigger severe weather
over the Plains on Wednesday, and stormy conditions across the South,
Southeast, and the Midwest on Thursday...

...Wet pattern continues across the Pacific Northwest and Rockies through
midweek...

An active weather pattern will bring rainy to stormy conditions across
many parts of the country during the next couple of days.  First of all, a
complex low pressure system that brought heavy rain near and around the
New York City area this morning is forecast to intensify rapidly as it
rotates back toward the southern New England coast tonight.  This second
phase of the nor'easter is expected to pack quite a punch of very strong
winds together with bands of heavy rain as they rotate around the cyclone
center and push onshore tonight.  Winds gusting to hurricane force is
possible later tonight near Cape Cod as the center of the nor'easter edges
closer.  All of southern New England westward to the New York
City/northern New Jersey will be under the threat of flash flooding
through tonight into early Wednesday.  The cyclone center is forecast to
begin moving back out to sea later on Wednesday with winds and rain
gradually diminishing Wednesday night into early Thursday.

Meanwhile, another energetic low pressure system is developing over the
High Plains.  This system will first ingest moisture and unstable air from
the Gulf of Mexico and will likely trigger rounds of severe thunderstorms
across the central and southern Plains ahead of a vigorous cold front and
dry line later tonight into Wednesday.  By Wednesday night, the threat of
severe weather will shift into the Deep South and down near the Gulf Coast
as an anomalously large and deep low pressure system continues to develop
in the mid-section of the country.  An axis of moderate to heavy rain is
also expected to extend north of the system across the Mid-MS Valley into
the Midwest.

Meanwhile, a series of low pressure systems will continue this seasonal
wet pattern for the Pacific Northwest over the next several days. Low
elevation rain and high elevation heavy snow will impact much of the
coastal Pacific Northwest and Cascades respectfully. A few inches of rain
are likely for the low elevations while 1-2 feet of snow is likely across
much of the highest peaks of the northern Cascades. Lighter snow amounts
are expected over much of the high Rocky Mountain peaks. High temperatures
will drop significantly today as high pressure builds over the West on the
backside of the severe weather system over the Plains. Highs are expected
to drop down to 15-25 degrees below average for much of the Great Basin
and California. Seasonal temperatures will return to the West on Wednesday.

Kong

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