Today Through the Fourth Friday (22 to 28 days) Weather Outlook for the U.S. and a Six-Day Forecast for the World: posted June 17, 2024
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 after about 4 p.m. New York time but it is unlikely to have changed very much from the morning update. The images in this article automatically update.
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
Mon Jun 17 2024
Valid 12Z Mon Jun 17 2024 – 12Z Wed Jun 19 2024…Heavy rain and severe thunderstorms possible today across the
north-central Plains, shifting north into the northern Plains and northern
Minnesota late tonight into Tuesday……Heavy rain and severe thunderstorms will shift farther south from the
central Plains to the upper Midwest Tuesday night to Wednesday morning……A heat wave will expand from the central Plains across the Great Lakes,
Ohio Valley and the Northeast today and remain across the Northeast
through midweek……Heavy rain threat emerging along the central Gulf Coast today,
following by an increasing heavy rain threat toward the Texas Gulf Coast
later Tuesday and especially Wednesday……Late-season wet snow will persist across the high-elevations of the
northern Rockies for the next couple of days...A very active weather pattern will continue for the next couple of days
with additional cold air intrusion and jet stream energy traversing the
northwestern U.S. The battle zone will continue to be over the
north-central U.S. where a cluster of thunderstorms containing severe
weather and heavy rain is expanding across the northern Plains.
Meanwhile, a low pressure system is forecast to develop over the central
High Plains and intensify as it heads toward and reaches the upper Midwest
by Tuesday morning. The threat of heavy rain and severe weather will lift
farther north into the northern Plains and the upper Midwest on Tuesday.
By Tuesday night, while the low pressure center will rapidly eject into
southern Canada, a sharp front trailing south and southwest from the low
will likely trigger an axis of heavy rain and severe thunderstorms from
the central Plains to the upper Midwest from Tuesday night into Wednesday
morning.The cold air intrusion and jet stream energy across the northwestern U.S.
will also bring a round of late-season wet snow across the high-elevations
of the northern Rockies through the next couple of days where Winter Storm
Warning and Winter Weather Advisories are in effect. In addition, this
energetic system will also bring quite a bit of wind across the Great
Basin and the northern Rockies today, reaching into the central Rockies
and northern Plains by Tuesday morning behind a sharp cold front.In stark contrast to the cool/cold, windy, rainy and even snowy weather
across the Northwest, a heat wave is quickly emerging ahead of the low
pressure system from the central Plains, upper Midwest, and into the Ohio
Valley. The heat will surge into the Northeast by Tuesday where high
temperatures well up into the 90s are forecast as far north as Vermont and
New Hampshire. By Wednesday afternoon, some locations in interior New
England could see temperatures topping the century mark, which will break
daily records at certain locations. Across the Four Corners region,
critical fire danger conditions are anticipated today under persistently
dry conditions fueled by gusty winds with the approach of the sharp front.Farther south from Central America across southern Florida and through the
western Atlantic, a plume of tropical moisture lurking across these areas
is beginning to head toward the central Gulf Coast region today. Showers
and embedded thunderstorms associated with this moisture plume are
expected to bring an increasing threat of heavy rain first along the
central Gulf Coast region during the next couple of days, with a gradual
westward shift in the heavy rainfall axis toward the western Gulf Coast
later on Tuesday and especially by Wednesday. Meanwhile, the National
Hurricane Center continues to monitor the potential for a tropical cyclone
to form over the southwestern Gulf of Mexico through the next few days.
It appears that east to northeasterly winds will gradually strengthen
especially along the Louisiana and Texas Gulf Coasts through the next
couple of days as pressure is forecast to fall gradually in the Gulf of
Mexico.