Today Through the Fourth Friday (22 to 28 days) Weather Outlook for the U.S. and a Six-Day Forecast for the World: posted February 29, 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
Thu Feb 29 2024
Valid 12Z Thu Feb 29 2024 – 12Z Sat Mar 02 2024…Heavy snow over parts of the Cascades, the Northern Intermountain
Region, Northern Rockies, Northern California, and Sierra Nevada
Mountains……Heavy lake-effect snow southeast of Lake Ontario and over the Upper
Great Lakes……Rain from the Gulf Coast to parts of northern Mid-Atlantic and shower
and thunderstorms along the Central Gulf Coast and Southeast…A second winter storm will impact the West Coast on Thursday and Friday.
The storm will create heavy mountain snow that will affect many passes.
Multiple feet of snow are likely (over 80% chance) for higher elevations,
especially above 5000 feet, including many Cascade and Sierra Nevada
Mountain passes. Extremely heavy snow rates surpassing 3 inches per hour
are likely.Furthermore, the storm will produce blizzard conditions in the Sierra
Nevada Mountains. In detail, strong winds will cause significant
blowing/drifting snow and whiteout conditions, making travel impossible in
the Sierra Nevada Mountains. There is a high chance (over 70%) of
substantial, long-lasting disruptions to daily life in the higher
elevations of the Sierra Nevada Mountains Friday-Saturday, where blizzard
conditions and 5+ feet of snow are expected.Moreover, in addition to the snow, coastal rain will develop over parts of
the Pacific Northwest Thursday into Saturday. Coastal rain will develop
over parts of California Thursday morning, continuing into Saturday.In addition, the widespread damaging wind will develop over the Western
U.S. Wind gusts of 55+ mph are forecasted across much of the West,
particularly across higher elevations and the Intermountain West, where
75+ mph gusts are possible. These winds would likely down trees and power
lines, resulting in power outages across affected areas.Further, cold air will lower snow levels Friday into Saturday. As the
storm moves south, snow levels will lower into some Northern California
and Sierra Nevada Mountain foothill communities. Much colder air is
forecast for Saturday, with temperatures 10-20 degrees below normal.Meanwhile, upper-level energy moving across the Great Lakes into the
Northeast will create lake-effect snow over the northeast portion of the
U.P. of Michigan, with the heaviest lake-effect snow southeast of Lake
Ontario on Thursday.Additionally, upper-level energy moving over the Southern Rockies will
move eastward to the Mid-Atlantic by Saturday, producing rain and
higher-elevation snow over the Southern Rockies Thursday. Overnight
Thursday, showers and thunderstorms will develop over parts of the
Southern Plains, moving into the Lower Mississippi, Tennessee, and
Southern Ohio Valleys and parts of the Southeast by Friday. The showers
and thunderstorms will continue over parts of the Southeast through
Saturday. On Friday, rain will move into parts of the Mid-Atlantic and
Ohio Valley, moving into parts of the Northeast by Saturday. Also, on
Friday, scattered pockets of rain/freezing rain will develop over the
highest elevations of parts of the Central/Southern Appalachians.