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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Pacific:

— 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.

Mountain:

— 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.

Central:

— 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.

Eastern:

—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 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/#NHC_Hurricane_Advisory for the latest Tropical Cyclone WARNINGS and information.

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

Wind gusts Sunday afternoon 11 December
Likelihood of winter weather impacting RV travel Sunday or Sunday night 11 December
Wind gusts Monday afternoon 12 December
Severe thunderstorm risk Monday and Monday night 123 December
Likelihood of winter weather impacting RV travel Monday or Monday night 12 December
Severe thundertorms risk Tuesday and Tuesday night 13 December
Flash Flood Risk Tuesday and Tuesday night 13 December
Likelihood of winter weather impacting RV travel Tuesday or Tuesday night 13 December
Total snowfall amounts through Tuesday night 13 December
Total precipitation amounts through Tuesday night 13 December