Travel & RV Weather Forecast Wednesday 20 July

Dangerous heat today across the southern Plains, lower Mississippi Valley and lower Ohio Valley.
Excessive heat today in central California and along the Colorado River in the Southwest Thursday and Friday.
Scattered severe thunderstorms will impact the lower Great Lakes and Ohio Valley today.
Scattered severe thunderstorms possible Thursday across eastern New York and New England.

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Pacific:

— Central CA San Joaquin Valley: Excessive Heat Warnings through this evening. High temperatures 102-108 deg F. I-5, CA-99 impacted.

— Much of interior southeast CA lower elevation deserts; southern NV: Excessive Heat Warnings Thursday and Friday. High temperatures 110-120 deg F. I-8, I-10, I-15, I-40 impacted.

Mountain:

— South-central and southwest UT; much of western AZ: Excessive Heat Warnings Thursday and Friday. High temperatures 105-120 deg F. I-15, I-40 impacted.

Central:

— Central and eastern OK; central, north-central and northeast TX; northern LA; west-central and northwest MS; western TN: Excessive Heat Warnings through this evening. High temperatures 105-110 deg F and heat index values as high as 115 deg F. I-10, I-20, I-30, I-35, I-40, I-44, I-45, I-49, I-55 impacted.

— Central MS and central AL: Scattered severe thunderstorms possible Thursday. Damaging winds are the main threat. I-20, I-22, I-55, I-59, I-65, I-85 potentially impacted.

Eastern:

— Southeast MI; eastern and southeastern IN; OH; north-central KY: Widely scattered severe thunderstorms possible today. Damaging winds gusts are the main threat, although isolated hail and a tornado or two are also possible. I-64, I-69, I-70, I-71, I-74, I-75, I-76, I-77, I-80/90/OH Turnpike, IN Toll Road, I-94 potentially impacted.

— Eastern NY; CT; RI; MA; VT; NH; most of ME along and west of I-95: Scattered severe thunderstorms possible Thursday. Damaging winds are the main threat. I-84, I-87, I-89, I-91, I-93, I-95, NY Thruway, Mass Pike potentially impacted.

— Central and northern GA; upstate SC; central NC: Scattered severe thunderstorms possible Thursday. Damaging winds are the main threat. I-16, I-20, I-40, I-75, I-77, I-85, I-95 potentially impacted.