Today Through the Fourth Friday (22 to 28 days) Weather Outlook for the U.S. and a Six-Day Forecast for the World: posted March 18, 2024
It is difficult to find a more comprehensive Weather Outlook anywhere else with the ability to get a local 10-day Forecast also.
This article focuses on what we are paying attention to in the next 48 to 72 hours. The article also includes weather maps for longer-term U.S. outlooks and a six-day World weather outlook which can be very useful for travelers.
First the NWS Short Range Forecast. The afternoon NWS text update can be found here but it is unlikely to have changed very much. The images in this article automatically update.
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
342 AM EDT Mon Mar 18 2024
Valid 12Z Mon Mar 18 2024 – 12Z Wed Mar 20 2024…A few rounds of lake effect snow forecast downwind of the Great Lakes
over the next few days...…Cold morning temperatures bring a frost/freeze risk to parts of the
Mid-South and Southeast on Tuesday……Record breaking warmth continues across the Pacific Northwest and
northern Great Basin…The new workweek will start off by featuring a weather pattern consisting
of high pressure stretching southward from the northern Plains to the Gulf
Coast. As a result, continuous cold northwest flow will create lake effect
snow chances throughout the Great Lakes today before the next clipper
system swings over the region and into northern New England by early
Wednesday. Accumulating snow is expected across the typical snow-belts
downwind of lakes Erie and Ontario, as well as into northern Michigan,
where Winter Weather Advisories have been issued. Snow showers could
expand into the Interior Northeast and northern New England on Wednesday
as the aforementioned clipper system swings eastward, with the potential
for accumulating snowfall particularly in the elevated terrain.This push of cold air underneath and just east of the high pressure
settling over the Deep South on Tuesday will allow for subfreezing
temperatures to extend as far south as the Lower Mississippi Valley and
Southeast. Frost/freeze conditions could damage and/or kill any
unprotected sensitive vegetation, prompting Freeze Watches and Warnings to
extend from Arkansas to the Carolinas. This cold isn’t anticipated to be
long-lived as temperatures gradually warm by midweek.Conversely, well above average spring warmth is expected to continue
throughout the Northwest through Tuesday with highs reaching into the 70s.
These temperatures could threaten daily record highs today in Portland, OR
and Spokane, WA. One final day of summer-like warmth is also expected in
southern Florida today ahead of a cold front as highs approach 90 degrees.
This front may spark thunderstorms that could contain isolated hail and
damaging winds for parts of the Florida Peninsula. Lastly, light shower
activity is forecast to continue across southern Texas, as well as
scattered rain and mountain snow showers through the Southwest over the
next few days as an upper level low meanders over the region.