Travel & RV Weather Forecast Tuesday 20 December

** Heads Up ** High impact winter storm and associated arctic front will create dangerous conditions for RV travel from the Rockies to the Ohio Valley Wednesday through Friday. If you are traveling on I-20, I-40 or I-80 Wednesday night or Thursday, be prepared for wind chills of zero, -25 and -50 deg F, respectively.

Snow for much of Washington and the northern Rockies today and tonight.
Major winter storm and Arctic Front brings snow to the Midwest and western Great Lakes, and high winds and dangerously cold wind chill values to the Rockies and Plains.
Big warm-up for the entire country starts after Christmas.

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Pacific:

— Northwest and western WA: Winter Storm Warnings and Advisories through late tonight. Accumulations will range from an inch or two in the low elevations, to 10-24 inches in the mountains. I-5, I-90 impacted.

— Eastern WA; northern ID; northeast OR: Winter Storms Warnings and Advisories through Wednesday. 2-8 inches additional snowfall. I-84, I-90 impacted.

— OR Cascades: Winter Weather Advisories this morning continuing through tonight. Snow accumulations generally 4-10 inches.

Mountain:

— Western and southern MT; central and southeast ID; western WY; north-central UT: Winter Storm Warnings, Watches and Advisories through Wednesday night. Snow accumulations generally 3-8 inches in the valleys and low elevations to 8-24 inches in the mountains. Wind gusts 35-55 mph and windchill values as low as -50 deg F. I-15, I-80, I-84, I-90 impacted.

— MT; eastern and southeast ID; much of WY; north-central and eastern CO: Wind Chill Watches and Warnings Wednesday afternoon through Friday. Windchill values -50 to -60 deg F. I-15, I-25, I-70, I-80, I-84, I-90, I-94 impacted.

— Southern and southeast WY: High Wind Warnings and Watches Wednesday along I-80 from east of Cheyenne to Evanston and along I-25 to Casper. Gusts 60-75 mph. Wind chill values -40 to -50 deg F. I-25 ,I-80 impacted.

— Central and north-central CO and adjacent south-central WY: Winter Storm Warnings (WY) and Watches Wednesday afternoon and Wednesday night. 4-15 inches snow, wind gusts 60-65 mph and wind chill values -50 to -60 deg F. I-70, I-80 highly impacted.

— South-central CO and north-central NM west of the I-25 corridor and north of Santa Fe: High Wind Watch Wednesday evening through Thursday morning. Gusts to 60 mph.

— East-central and northeast NM: Wind Chill Watch late Wednesday night through Friday morning. Wind chill values as low as -25 deg F. I-25, I-40 impacted.

Central:

— Most of ND; SD; southeast MN; western IA; NE; most of OK and MO; northern AR; TX Panhandle: Wind Chill Watches and Warnings associated with the Arctic Front late Wednesday through Friday morning. Wind chill values will be around -25 deg F on I-40; -40 deg F on I-70 and -50 deg F on and north of I-80. I-29, I-35, I-40, I-44, I-70, I-80, I-90, I-94 impacted.

— Eastern MN; western and southern WI; central and northern IL; most of IA; central and northern MO; most of eastern and northern KS; south-central NE: Winter Storm Watches Thursday and Friday. Accumulations generally 2 to 6 inches and wind gusts to 50 mph. Major highways impacted include I-35, I-39, I-43, I-55, I-57, I-70, I-72, I-74, I-80, I-88, I-90, I-94.

— Central and northern AL: Wind Chill Watch late Thursday night through Saturday morning. Wind chill values zero to -10 deg F. I-20, I-22, I-59, I-65, I-85 impacted.

Eastern:

— Northern and central IN and adjacent southwest MI and northwest OH: Winter Storm Watches Thursday evening through Saturday morning. Precipitation starts as snow, sleet and freezing rain before becoming all snow late Thursday night. Accumulations of 6 inches or more are possible. Wind gusts 50-55 mph. I-65, I-69, I-70, I-74, I-75, I-80/90, I-94, OH Turnpike, IN Toll Road impacted.

— Portions of northeast WV and far-western MD: Winter Storm Watch Thursday. Heavy wintery precipitation possible with snow accumulations greater than 6 inches and ice accumulations of 1/4 inch or more. I-68 impacted.

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 Tuesday afternoon 20 December
Likelihood of winter weather impacting RV travel Tuesday or Tuesday night 20 December
Wind gusts Wednesday afternoon 21 December
Likelihood of winter weather impacting RV travel Wednesday or Wednesday night 21 December
Wind chill values Thursday morning 22 December
Likelihood of winter weather impacting RV travel Thursday or Thursday night 22 December
Total snowfall amounts through Thursday night 22 December
Total precipitation amounts through Thursday night 22 December