Weather Outlook for the U.S. for Today Through at Least 22 Days and a Six-Day Forecast for the World: posted October 28, 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 (up to four weeks) 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 Oct 28 2024
Valid 12Z Mon Oct 28 2024 – 12Z Wed Oct 30 2024…Moderate to heavy snow over parts of the Northern/Central Rockies on
Tuesday……Temperatures will be 20 to 30 degrees above average over parts of the
Plains and Mississippi Valley……There is a Marginal Risk of severe thunderstorms over parts of the
Upper/Middle Mississippi Valley and Central/Southern Plains on Tuesday…A front extending from the Northern Plains to the Great Basin and Southern
California will move eastward to the Upper Mississippi Valley/Upper Great
Lakes southwestward to the Southern High Plains by Wednesday. Ahead of the
front, temperatures will be 20 to 30 degrees above average over parts of
the Plains and Mississippi Valley.In the wake of the front, onshore flow off the Pacific will produce rain
over the Pacific Northwest and Northern California through Tuesday night.
In addition, scattered light snow will develop over the highest elevations
of the Cascades, the Sierra Nevada Mountains, the Northern Intermountain
Region, and the Great Basin through Wednesday. Lower-elevation rain will
also develop over parts of the Great Basin, Southwest, and
Northern/Central Rockies.Further, intensifying upper-level energy over the Four Corners Region will
aid in producing moderate to heavy snow over parts of the Northern/Central
Rockies and higher elevations of the eastern Great Basin on Tuesday.Meanwhile, southeasterly flow off the Gulf of Mexico will create scattered
rain over parts of the Western Gulf Coast on Monday. On Tuesday, the
atmosphere along the Western Gulf Coast will become more unstable, so
showers and thunderstorms will develop over parts of the Western Gulf
Coast. Similarly, easterly flow off the Atlantic will produce rain over
parts of Florida on Monday. On Tuesday, the atmosphere will become more
unstable, so showers and thunderstorms will develop over parts of Florida.Moreover, moist air will pool ahead of the front over the Great Lakes on
Monday, creating showers and thunderstorms. Rain will develop over parts
of the Northeast on Tuesday into Wednesday morning and also over parts of
the Northern/Central Plains and Upper Mississippi Valley on Tuesday.Additionally, moisture will pool along the boundary over parts of the
Upper/Middle Mississippi Valley to Central/Southern Plains, producing
strong to severe thunderstorms. Therefore, the SPC has issued a Marginal
Risk (level 1/5) of severe thunderstorms over parts of the Upper/Middle
Mississippi Valley to Central/Southern Plains from Tuesday into Wednesday
morning. The hazards associated with these thunderstorms are frequent
lightning, severe thunderstorm wind gusts, hail, and a minimal threat of
tornadoes.