A large and slow-moving storm system across the Ohio Valley and Mid-South will be responsible for a soggy and stormy weekend across the East.
Today
Showers and thunderstorms will be most widespread along the storm’s cold front, which will stretch from upstate New York to the Ohio Valley, Lower Mississippi Valley and eastern Texas. A few of these storms will have the potential to turn severe with large hail and damaging winds, but they will otherwise be heavy rainmakers.
Rain will spread eastward into New England, the Mid-Atlantic and the Middle and Deep South as the warm and humid air mass ahead of the front triggers showers and thunderstorms. Areas along and west of I-95 are likely to be dodging thunderstorms by afternoon, so have secondary outdoor plans.
Speaking of showery weather, a disturbance moving into the Pacific Northwest will dive southward across the Great Basin, bringing rain from eastern Washington to Nevada and even into the High Desert Southwest.
Between these two storms, an area encompassing the Rockies and Plains, and even most of the Great Lakes, will enjoy pleasant weather today as high pressure builds into place behind the departing storm.
Temperatures will be at their coolest across the Great Lakes, where 40s, 50s and 60s will be common. May sunshine will help push temperatures across the Plains into the 70s and even 80s, while warm air ahead of the Eastern storm will propel temperatures well into the 80s as far north as southern New England. A few spots in the Carolinas and Mid-Atlantic could even flirt with 90 degrees!
Across the West, cloud cover will play the primary role in determining temperatures. Sunny spots like southern California and Rockies will see 70s and 80s, while the Pacific Northwest and Great Basin struggles to get out of the 50s and lower 60s.
Sunday
The pesky Eastern storm will continue to make for weather trouble on Sunday. The heaviest rain will make its way toward the Eastern Seaboard, with thunderstorms possible from New England to Florida. Meanwhile, a disturbance tagging along behind the main storm will help to trigger rain and a few thunderstorms across the eastern Great Lakes and upper Ohio Valley.
For Sunday, the West will also see a carbon-copy of Saturday’s weather. Rain will creep eastward into Montana and the western Rockies, while maintaining its grip on the Great Basin. Colder air associated with this storm may even mean a few wet snowflakes for the highest elevations of the Rockies and Sierra.
There will be two ribbons of sunshine on Sunday. One will stretch from the Dakotas and eastern Montana to the Gulf Coast, while the other will extend along the Pacific coast.
Chilly 50sw and lower 60s will be found from Illinois to northern New England, with upper 60s and 70s common from the Mid-South to the Mid-Atlantic. Unlike previous days, the 80s will be limited to the Gulf Coast, Florida and the southern Carolinas. The spot to be will be in the Plains, where 70s and 80s will surge as far north as the Canadian border, while much of the interior West struggles to get out of the 50s and lower 60s. The sun-filled West Coast will see cool temperatures along the coast, with milder 70s and 80s in the interior.
