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 5, 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
Tue Mar 05 2024
Valid 12Z Tue Mar 05 2024 – 12Z Thu Mar 07 2024…A wet weather pattern for large areas to the east of the Mississippi
River……Heavy higher elevation snows continue for northern portions of the West
Tuesday with improving conditions by Wednesday……Much above average temperatures expected for much of the lower 48 to
the east of the Rockies over the next few days…Widespread showers and thunderstorms bringing areas of moderate rainfall
continue this morning along a slow-moving cold front stretching from the
Great Lakes into the Middle and Lower Mississippi Valley. Storm chances
will shift into the Lower Great Lakes southwestward through the Ohio and
Tennessee Valleys through the day Tuesday as the front makes some eastward
progress. To the south, another frontal boundary along the Gulf Coast will
lift northward, bringing with it additional Gulf moisture and storm
chances into the Southeast. A wave of low pressure is expected to develop
along the boundary overnight Tuesday as the system shifts northeastward
into the Carolinas. More widespread moderate to locally heavy rainfall is
expected through the region with an isolated threat of flash flooding.
Meanwhile, a coastal low in the Mid-Atlantic will continue northward
bringing light to moderate showers from the Mid-Atlantic into New England
Tuesday. By Wednesday, the low pressure system over the Southeast will
begin to better organize and shift northeastward along the coast towards
the Mid-Atlantic/New England. The frontal system over the Great Lakes will
move eastward into the Northeast as well, helping to focus a renewed round
of heavier showers along a northeastward axis from the coastal
Mid-Atlantic through New England. A Slight Risk of Excessive Rainfall
(level 2/5) is in place for portions of southern New England where the
heaviest rainfall will overlap wet antecedent conditions and areas with
higher stream flows, which may result in some scattered instances of flash
flooding. Some wintry precipitation may mix in north of the cold front
over northern New England overnight Wednesday.One more day of heavy higher elevation/mountain snows continues in the
West as an energetic jet stream sits over a quasi-stationary boundary and
an influx of Pacific moisture focused through northern California and the
southern Pacific Northwest into the northern Great Basin and Rockies.
Several more inches of snow are forecast in the regional mountain ranges
from the southern Cascades and northern Sierra east to the Tetons in
Wyoming. Colder air settling in with the front has brought snow levels
lower, bringing snow to interior lower elevation valley locations as well
from southern Oregon into western Idaho. Another Pacific storm system
dropping southward along the California Coast will help to shift the
influx of Pacific moisture southward by Wednesday, finally bringing
improving conditions as snowfall tapers off. Along the coast, some
locally heavy rainfall is expected Tuesday for northern California,
shifting southward with the system into southern California Wednesday.
Here, more sensitive conditions due to recent high profile rainfall events
may lead to an isolated but nonzero threat of flash flooding.Elsewhere, an upper-level shortwave will help to deepen/better organize a
low pressure/frontal system lingering over the Northern Plains Wednesday,
leading to increasing precipitation chances. Some accumulating snowfall
looks possible along the Canadian border from northern North Dakota into
northern Minnesota by early Thursday. Further south, another organizing
frontal system will also bring increasing precipitation chances to the
Central and Southern Plains, with some showers and thunderstorms forecast
overnight Wednesday into early Thursday.High temperatures will remain well above average by 10-20 degrees for the
lower 48 east of the Rockies through midweek. Some even greater anomalies
will be found in the Upper Ohio Valley/Lower Great Lakes Tuesday as
temperatures once again reach into the 70s, 25-35 degrees above average.
The cold front passing through by Wednesday will make temperatures
relatively cooler, but still above average, with highs in the upper 40s to
low 60s. The warmest temperatures will be found along the western Gulf
Coast into southern Texas with highs in the mid-80s to low 90s. A few
daily record-tying/breaking highs may be reached in both locations.
Otherwise, along the East Coast, forecast highs range between the 40s and
50s in New England, 50s and 60s in the Mid-Atlantic, 60s and 70s for the
Southeast, and 70s and 80s into Florida. For central portions of the
country, highs will be in the 40s and 50s for the Northern Plains/Upper
Midwest, 50s and 60s from the Central Plains through the Middle
Mississippi Valley and into the Lower Ohio Valley, and the 60s and 70s for
the Southern Plains and Lower Mississippi Valley. In the West, highs will
remain near or below average as mean troughing remains in place, with
temperatures ranging from the 20s and 30s for the Northern
Rockies/adjacent High Plains, 30s and 40s for the Great Basin and Pacific
Northwest, 50s and 60s for California, and 60s and 70s in the Southwest.