Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 PM EDT Sun Oct 23 2022

Valid 00Z Mon Oct 24 2022 - 00Z Wed Oct 26 2022

...A robust low pressure system is bringing the first widespread wintry
weather event across the northern and central Rockies into the northern
High Plains...

...Severe weather is possible tonight over the eastern portion of the
northern to central Plains...

...Another low pressure system will bring a quick round of heavy rain,
strong to severe thunderstorms across the central U.S. Monday and
Tuesday...

A low pressure system exiting the northern and central Rockies is forecast
to intensify further and continue to bring the first wintry weather event
into the northern High Plains through tonight.  A cold air mass from
western Canada will be ushered into the region behind the intense low
pressure system, resulting in rain changing to a period of accumulating
snow across the northern High Plains.  Northwesterly winds are expected to
strengthen to gale force with stronger gusts.  The storm is forecast to be
near peak intensity Monday morning as it tracks northeastward into
southern Canada, bringing improving conditions with the snow and winds
gradually tapering off later on Monday.  Behind the storm, much below
normal temperatures will be surged all the way through the western U.S.
and into much of the northern and central Plains, replacing near record
high temperatures upward to 90 degrees over the central Plains this
afternoon, to below freezing by Tuesday morning.

Meanwhile, Hurricane Roslyn has made landfall and weaken rapidly over the
mountainous terrain of central Mexico.  Higher level moisture associated
with the remnants of Roslyn is forecast to interact with the trailing cold
front associated with the deep cyclone over the northern Plains.  This
interaction is forecast to trigger the formation of a new low pressure
system over the southern Plains on Monday.  Rain and thunderstorms are
expected to quickly develop and expand across the southern Plains toward
the Mississippi Valley on Monday as this low pressure system deepens along
the front.  Excessive rainfall and severe thunderstorms are possible on
Monday into early on Tuesday ahead of this system.


Kong


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