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.


Severe Weather and Tropical Watches and Warnings

— See https://rvweather.com/warnings-watches-and-advisories/#SPC_Tornado_Watch for the latest Tornado and Severe Thunderstorm WATCHES

— See https://rvweather.com/warnings-watches-and-advisories/#NWS_Tornado_Warning for the latest Tornado, Severe Thunderstorm, and Flash Flood WARNINGS.

— See https://rvweather.com/warnings-watches-and-advisories/#NHC_Hurricane_Advisory for the latest Tropical system WARNINGS and information.



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