Travel & RV Weather Forecast Sunday 11 December

  • Heavy mountain snows, valley rains and strong winds move into southern California and the Southwest tonight and Monday.
  • Tuesday will be a high impact weather day from the Northern Plains and Upper Midwest to the Gulf Coast for snow, freezing rain, flash floods and a severe weather outbreak.
  • Snow today and tonight for much of New York State and surrounding areas.
  • ** New ** Complete list of phone numbers and websites for road conditions for all 50 states. Link at end of forecast.

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— North-central and central OR: Winter Weather Advisories through this evening. An additional 2-5 inches of snow, accompanied by some freezing rain. US-20, US-26, US-97 impacted.

— Northeast OR above 3000 feet: Winter Weather Advisory through Monday morning. 3-7 inches snow and some freezing rain.

CA Sierra Nevada: Winter Storm Warnings continue through early Tuesday morning. An additional 4-8 inches snow at 3500 feet and an additional 6 inches to 2 feet of snow at higher elevations. Wind gusts 50 mph or higher on exposed elevations. I-80, US-50 impacted.

Southern CA Ventura, Los Angeles and interior Santa Barbara County Mountains above 3500 feet: Winter Storm Warnings this afternoon through Monday evening. Snow accumulations will be 1-4 inches above 3500 feet, 4-8 inches above 5000 feet, and 8-16 inches above 7000 feet. Wind gusts to 35 mph. I-5, I-10, I-15 impacted.

Southern CA in and north of the greater Los Angeles area: Flood Watches and Advisories continue through this afternoon. I-5, I-10, US-101 potentially impacted.

Southern CA coastal and coastal mountains: High Wind Warnings and Advisories today. Gusts 35-40 mph except up to 65 mph in the mountains. I-5, I-8, I-10, I-15, US-101 impacted.

Southern CA Santa Ana Mountains: Winter Weather Advisory Monday. 1-6 inches snow above 3000 feet. I-15 impacted.

Southern CA Deserts including Death Valley and the Mojave Desert; southwest NV: Wind Advisories this morning. Gusts 45-55 mph. I-15, I-40, CA-58 impacted.

Southern CA San Diego County Mountains: Winter Storm Warnings Sunday evening through Monday evening. 3-10 inches snow and wind gusts 50-60 mph. I-8 impacted.

— Southern CA San Diego County Mountains and Deserts: Wind Advisories today and tonight. Gusts 35-45 mph. I-8, I-10 impacted.

Most of NV north of I-15 except west-central part of state: Winter Storm Warnings (central and east-central) and Advisories this morning. Winter Storm Warnings over eastern NV continue through this evening. Additional accumulations will range from a couple of inches west and north, to 8-15 inches in the eastern mountains. Wind gusts 35-65 mph. I-80, US-50 impacted.


Central and southwest MT; central and eastern ID; western WY; northern, northeast, central and southwest UT; northwest, central and southeast AZ: A combination of Winter Storm Warnings (ID, UT) and Advisories today and Monday for snow and high winds. Accumulations will range from a few inches in valleys and drier regions to 1-2 feet in the mountains. Snow levels even in AZ will be as low as 5000 feet. Wind gusts 30-50 mph. Most major roads impacted, including I-10, I-15, I-17, I-19, I-40, I-70, I-80, I-84 , I-90.

Western UT; northwest AZ: High Wind Warnings (parts of UT) and Advisories through this evening. Gusts 50-60 mph. I-15, I-40, I-80 impacted.

Eastern MT; northeast, east-central and south-central WY: Winter Storm Watches Monday afternoon through Wednesday night. Potential accumulations range from 4-8 inches across the plains of WY to 10-18 inches in MT and the mountains. Wind gusts to 35 mph. I-25, I-80, I-90, I-94 impacted.

Most of central and western CO: Winter Storm Warnings (southwest) and Advisories Monday through Wednesday above 8500 feet. 5-12 inches snow and wind gusts to 45 mph. I-70 impacted.

Northeast CO: Winter Storm Watch Monday night through Tuesday evening. 4-10 inches snow and wind gusts to 60 mph. I-70, I-76 impacted.

North-central NM vicinity Santa Fe and south-central NM: High Wind Watches Monday. Gusts to 60 mph. I-25 potentially impacted.


ND; SD except for southeast corner of state; north-central and western NE; western, central and northeast MN including the Arrowhead: Winter Storm Watches late Monday night through late Wednesday night. Snow and freezing rain with wind gusts 50-55 mph possible. Snow accumulation will range from a few inches in MN to 10–18 inches in the Dakotas. More snow and less freezing rain to the west; greatest freezing rain potential is over MN. I-29, I-35, I-80, I-90, I-94 impacted.

— Central KS; central OK; northern TX along and west of the I-35 corridor: Marginal risk of severe thunderstorms Monday and Monday night. I-20, I-35, I-40, I-44, I-70 potentially impacted.

Eastern TX; LA; southern AR; southwest MS: Significant potential for a severe weather outbreak, including tornadoes Tuesday and Tuesday night. I-10, I-12, I-20, I-30, I-49, I-55, I-59 potentially impacted.

Southwest MO; western TN; central and eastern AR; LA; MS: Heavy rains and thunderstorms Tuesday and Tuesday night with the risk of flash flooding. I-10, I-12, I-20, I-30, I-49, I-55, I-59 potentially impacted.

Parts of south-central LA: FLASH FLOOD WARNING just north of I-10 through mid-morning. I-49 potentially impacted.


Portions of eastern and central NY; northeast PA; western MA; central and western CT; extreme northern NJ: Winter Weather Advisories today and tonight. Accumulations will range from 1-2 inches above 1200 feet in northern NJ to 3-6 inches over much of NY and southwest New England. I-80, I-81, I-84, I-87, I-88, I-90, I-91, NY Thruway, Mass Pike impacted.

— Far-western MD: Winter Weather Advisory for some light freezing rain this morning. I-68 impacted.

** New: Access to real-time road information! **

Phone numbers and websites for road conditions in all 50 states. Courtesy of the Cheyenne WY Weather Forecast Office

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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