Travel & RV Weather Forecast Friday 2 September (and Labor Day Weekend outlook)

Excessive heat intensifies across southern and central CA and remains in place through the Labor Day weekend.
Localized flash flood threat continues today across the Big Bend region of Texas.
Tropical Storm Danielle poses no threat to the U.S. or Labor Day weekend travel plans.

Labor Day weekend outlook

Hot and dry for much of the West, Rockies, and Northern Plains — elevated fire danger.
Some monsoon rains reappear in Arizona over the weekend
Cooler and wetter than normal across Texas and the Southeast
Heaviest rains this weekend along the Texas and Louisiana coasts.
Dry, cool start to the weekend over the Midwest and Northeast, but rain and warmer temperatures move in by Monday, especially to the Midwest.
Tropical Storm Danielle has formed, and another named tropical system might form over the Atlantic; neither system will pose a threat to the U.S. or holiday travel plans.

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Pacific:

— Southern and much of interior Central CA; southern NV: Excessive Heat Warnings and Watches continuing through the Labor Day weekend and into early next week. 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 OR and northwest NV: Strong winds Saturday afternoon. Wind gusts 30-40 mph.

Mountain:

— Central and southern 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-19, I-40 potentially impacted.

— Portions of south-central AZ: Excessive Heat Warning Saturday through Monday. High temperatures 106-109 deg F. I-10, I-17 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.

— Northern and central WI; southeast MN; much of IA; southeast NE; northeast, central and western KS; northwest OK: Isolated strong to severe thunderstorms possible this afternoon and evening. Strong wind gusts and hail are the primary threats. I-29, I-35, I-43, I-70, I-80, I-90, I-94 potentially impacted.

Eastern:

— MI Upper Peninsula: Isolated strong to severe thunderstorms possible this afternoon and evening. Strong wind gusts and hail are the primary threats.