Travel & RV Weather Forecast Sunday 4 December

  • Accumulating snow slowly spreads into the Inter-Mountain West and Northern Rockies.
  • Heavy snow persists across the central and southern Sierra-Nevada mountains.
  • Locally heavy rain will be possible today over parts of southeastern Arizona.
  • Heavy rains develop Monday across the Tennessee Valley.

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Southern WA; northwest, north-central OR; northern ID: Winter Weather Advisories through this evening. Up to 3 inches snow and some mixed precipitation. Greatest accumulations above 500 feet. Gusts to 40 mph, especially this morning in the Columbia River Gorge. I-5, I-84, US-395 impacted.

— Southeast OR: Winter Weather Advisory continues through this morning. 1-3 inches snow.

Portions of northwest and north-central CA: Winter Weather Advisories through Monday morning. 4-12 inches above 3000 feet and 2-6 inches snow below 3000 feet. I-5 impacted.

Northeast CA: Winter Weather Advisory this afternoon through late tonight. Up to 2 snow, except 2-4 inches west of US-395. US-395 impacted.

CA Sierra Nevada Mountains: Winter Storm Warnings through late tonight. Total snow accumulations 1-3 feet and wind gusts 50-60 mph. I-80, US-50 impacted.


— North-central ID; much of central and southern MT: Winter Weather Advisories midday today through Monday afternoon. Snow accumulations generally 2-5 inches. I-15, I-90 impacted.

— Southern and southwest ID: Winter Weather Advisories this morning. Up to 2 inches snow expected. Some freezing rain south of Boise. I-84 impacted.

— Northwest and west-central WY including Wind River Range: Winter Weather Advisories this morning through Monday morning. Accumulations will range from 2-4 inches in the valleys to 6-11 inches at higher elevations. Wind gusts to 40 mph over the mountain passes.

— North-central UT in and around the Wasatch Mountains: Winter Weather Advisories midday today through Monday morning. Snow accumulations generally 4-8 inches. I-80 impacted.

— South-central WY Sierra Madre and Snowy Mountain Ranges: Winter Weather Advisories this evening through Monday night. Up to 6-12 inches snow and blowing snow. Advisories are south of I-80.

— Southeast WY: High Wind Warnings midday today through midday Monday. Gusts to 60 mph. I-25, I-80 impacted.

— Southeast AZ: Rain, heavy at times today and tonight. Marginal risk of flash flooding. I-10, I-19 potentially impacted.

— Southeast and south-central AZ south of I-10. Dense Fog Advisories this morning. I-19 impacted.

— South-central NM Guadalupe and Delaware Mountains: High Wind Watch for Monday afternoon. Gusts to 65 mph.


— Southern TN; northeast MS; northern AL; northwest GA: Risk of Flash Flooding due to heavy rains Monday afternoon and Tuesday. I-24, I-59, I-65, I-75 potentially impacted.


— No significant weather impacts to RV travel today or Monday.

Severe Weather and Tropical Watches and Warnings

— See for the latest Tornado and Severe Thunderstorm WATCHES

— See for the latest Tropical Cyclone WARNINGS and information.

— See for the latest Tornado, Severe Thunderstorm, and Flash Flood WARNINGS.

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