Published: June 30,2015
Parts of the Pacific Northwest will sizzle this Fourth of July weekend while some in the East will be dodging Mother Nature's fireworks.
The overall pattern that took hold over last weekend – an upper-level ridge of high pressure in the West, and a southward dip in the jet stream in the East – is expected to remain in place through the holiday weekend.
This means much of the West will remain firecracker hot, while the central and eastern U.S. will find scattered showers and thunderstorms that may dampen holiday festivities at times. A few severe thunderstorms are likely as well.
(MORE: Western Heat Wave)
Below you will find the forecast details for each day.
Friday's Forecast
Friday's Forecast
One disturbance will move off the East Coast on Friday, but a stationary front will stay draped from Virginia and the Tennessee Valley into the central Plains.
A chance for scattered showers and thunderstorms exists along and near this frontal boundary. Isolated thunderstorms should also develop in parts of the Desert Southwest, Sierra and Great Basin.
Otherwise, mainly dry weather is expected over most of the Northeast, Great Lakes, Upper Midwest, and northern Plains.
(FORECAST: New York | Chicago | Atlanta | Seattle)
Highs and lows will be close to average for this time of year, except in the West where the abnormally hot conditions will persist.
Numerous record highs are in jeopardy throughout the holiday weekend in the Pacific Northwest inland from the coast, Great Basin, and valley locations of the northern Rockies, where highs in the 90s and 100s will dominate. East of the Rockies, high temperatures will be generally in the 80s and 90s, except in New England, the Great Lakes and Upper Mississippi Valley where highs will be in the 70s.
(MAPS: This Week's Forecast)
Potential Wet Travel:
- Interstate 95 south of Washington, D.C. to Jacksonville, Florida
- Interstate 75 from Cincinnati into south Georgia
- Interstate 40 from North Carolina to Texas and New Mexico
Fourth of July Forecast (Saturday)
Fourth of July Forecast
High pressure over the West will weaken a bit and become contaminated with mid-level moisture.
While parts of the East will see the chance of scattered showers and thunderstorms once again, it does not appear to be a washout, with most areas seeing storms of the hit and miss variety. Parts of the Plains will also see a few thunderstorms, and scattered thunderstorm coverage in the Rockies and Desert Southwest should be greater than Friday.
(FORECAST: Boston | Washington, D.C. | St. Louis | L.A.)
The good news is that the coverage of storms Saturday night will decrease in most areas with the loss of daytime heating.
The greatest chance of wet weather impacting firework displays will be found in parts of the Mid-Atlantic states, southern Appalachians and Plains. Even then, that chance appears less than 50 percent.
The rest of the East Coast, Great Lakes and much of the West will enjoy the best chance of having fireworks shows go off without a weather interruption, assuming it is not too dry in spots in the West for firework celebrations.
(MORE: Lightning Safety Tips)
The heat will continue in most of the West with temperatures up to 20 degrees above average in the interior Northwest and northern Rockies. Highs will once again climb into the 90s and lower 100s, with 60s and 70s along the immediate coast providing a good heat getaway idea.
Highs in the East will remain quite comfortable for early July, with 70s and 80s in the Midwest and Northeast with typical, muggy 90s in much of the Deep South.
Potential Travel T-Storms:
- Interstate 81 from Pennsylvania to Tennessee
- Interstate 40 from North Carolina to Arizona
- Interstate 25 from Wyoming to New Mexico
Sunday's Forecast
Sunday's Forecast
On Sunday, a cold front will slide from the northern Plains into the Upper Midwest, while a stationary front and prominent upper-level disturbance will be over the Ohio and Tennessee Valleys.
As a result, showers and thunderstorms remain a possibility from the Appalachians into the Ohio and Tennessee Valleys as well as into the mid-Mississippi Valley. A few thunderstorms will likely develop ahead of the approaching cold front in the eastern Dakotas, Minnesota and northwestern Wisconsin southwestward into Nebraska. Scattered thunderstorms will also flare up with the afternoon's heat in the Rockies, Desert Southwest, Great Basin and Sierra.
(FORECAST: Pittsburgh | Minneapolis | Dallas | Phoenix)
Highs will again soar into the 90s and 100s in the interior Northwest and northern Rockies,. The immediate West Coast will still be an escape from the worst of the heat.
(MAPS: 10-Day Temperature Forecast)
Locations from the Plains to the East Coast will see temperatures typical for this time of year, with highs mainly in the 80s. Any 90s should be confined to the Southeast, Deep South and central/southern Plains.
Potential Travel T-Storms:
- Interstate 70 from Ohio to St. Louis
- Interstate 65 from Tennessee to Chicago metro
- Interstate 94 in Minnesota, eastern North Dakota
- Interstate 10 in New Mexico and Arizona
MORE: Fourth of July Fireworks (PHOTOS)
No comments:
Post a Comment