Travel & RV Weather Forecast Saturday 3 September

Excessive heat intensifies across southern and central CA and remains in place through Tuesday.
Significant potential for flash flooding Sunday night and Monday over parts of central Kentucky and Tennessee.
Tropical Storms Danielle and Early currently pose no threat to the U.S.

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Pacific:

— Southeast OR and northwest NV: Strong winds this afternoon. Wind gusts 30-40 mph.

— Southern and much of interior Central CA; southern NV: Excessive Heat Warnings and Watches continue through Tuesday. High temperatures will range from 100-110 deg F in the San Joaquin Valley to 105-115 deg F in the Mojave and southern Deserts and 115-123 deg F in Death Valley. Excessive Heat Warnings come into effect throughout the Sacramento Valley starting Sunday. I-5, I-8, I-10, I-15, I-40, CA-58, CA-99 among the highways impacted.

— Southeast CA and far-south NV: Isolated strong to severe thunderstorms possible this afternoon and evening. Strong wind gusts and hail are the primary threats. I-10, I-15, I-40 potentially impacted.

Mountain:

— Northwest AZ and south-central UT, Grand Canyon below 4000 feet and Glen Canyon below 5000 feet: Excessive Heat Warnings through Thursday. Temperatures may reach 105 deg F in Glen Canyon and up to 115 deg F in Phantom Ranch, Grand Canyon.

— West-central AZ: Isolated strong to severe thunderstorms possible this afternoon and evening. Strong wind gusts and hail are the primary threats. I-8, I-10, I-17, I-40 potentially impacted.

— Portions of south-central AZ: Excessive Heat Warning through Tuesday. High temperatures 105-110 deg F. I-10, I-17 impacted.

— Portions of north-central NM: Flash Flood Watches through this evening. Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations. I-25 potentially impacted.

Central:

— Portions of southwest TX: Flash Flood Watches continue through this evening for excessive rainfall. Flooding threat greatest in the Big Bend region, including Big Bend National Park. I-10 potentially impacted.

— Southeast MO; northeast AR; southern IL; extreme southwest IN; western KY; northeast TN: Isolated strong to severe thunderstorms possible this afternoon and evening. Strong wind gusts and hail are the primary threats. I-24, I-55, I-57, I-64, I-69 potentially impacted.

— Central KY and central TN: Heavy rains and flash flooding possible, starting Sunday and continuing through Monday. Up to 1-4 inches of rain expected. If you are camping near any small streams, creeks or low-lying areas, pay close attention to the forecast, any flood warnings, and directions from your local emergency management officials. Major highways potentially impacted include I-40, I-64, I-65, I-75.

Eastern:

— Heavy rains spread into PA, NY and southern New England late Sunday night and continuing through Labor Day. Up to 1-2 inches of rain possible in some locations, creating a possibility for localized flash flooding. f you are camping near any small streams, creeks or low-lying areas, pay close attention to the forecast, any flood warnings, and directions from your local emergency management officials.