Three things to know about Travel & RV Weather Tuesday 14 March

** Heads Up ** Dangerous flooding likely in parts of California and Nevada today, as the latest big, wet storm impacts the region. For RV’ers traveling on I-68 or on the Pennsylvania Turnpike on the Allegheny Plateau, be aware of sudden snow squalls and high winds that can suddenly drop visibility to near zero. These are the conditions that can lead to multi-vehicle wrecks.

The US is book-ended by majors storms on the East (nor’easter) and West (Atmospheric River) coasts, with a quiet center.
High winds and flooding will be the major issues for California. Over a foot of snow for much of New York and interior New England.
Severe weather threat returns to southeast Oklahoma and the ARK-LA-TEX region Thursday.

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Where does the California storm go next? Click here for the extended outlook (updates every Tuesday, Thursday and Sunday)

Pacific:

— Northwest OR: Dense Fog Advisory this morning. I-5 impacted.

— CA Sierra Nevada: Winter Storm Warnings continue through Wednesday evening. Additional accumulations of 2-6 inches below 7000 feet and 1-3 feet at higher elevations. Wind gusts to 100 mph on ridge tops. Snow levels today will vary between 6000-8000 feet. I-80, US-50 impacted.

— Much of central and northern CA west of the Sierras and south of Redding: High Wind Warnings and Advisories through late this evening. Gusts 50-70 mph with highest winds along exposed coastline and ridge tops over 1000 feet. Major highways impacted include I-5, I-80, US-101, CA-1, CA-99.

— Southern CA north of Oceanside and west of US-365; most all of central and northern CA Flood Warnings, Watches and Advisories through Wednesday. More heavy rains, up to 3-6 inches in some locations, are expected today and tonight. There remains high potential for widespread significant, even catastrophic, flooding is likely. Highways in central and northern CA potentially impacted include I-5, I-10, I-15, I-80, US-101, US-395, CA-1, CA-99.

— Much of central and northern NV: Flood Warnings, Watches and Advisories through late Wednesday. A combination of heavy rain and snowmelt will produce the potential for widespread flooding across the state. I-80, US-6, US-50, US-93, US-95 potentially impacted.

— Virtually all of NV north of I-15 and Las Vegas: Wind Advisories midday today through midday Wednesday. Gusts to 50 mph. All NV highways, except I-15, impacted.

— Southern CA Mountains and valleys north and east of Los Angeles, south of I-40: Wind Advisories midday today through Wednesday evening. Gusts to 55 mph. I-5, I-15, I-10 impacted.

Mountain:

— North-central ID; much of western, central and northern MT; eastern ID and western WY; north-central, northeast, central and southwest UT: A combination of Winter Storm Warnings, Watches and Advisories today through early Thursday morning. Snow accumulations will generally be 4-12 inches in the valleys, lower elevations and high plains, a foot or more over the Passes, and 1-3 feet in the mountains. Wind gusts to 40 mph. I-15, I-70, I-80, I-84, I-90 impacted.

— Northwest MT along the Rocky Mountain Front; portions of central and southwest MT: High Wind Warnings through this afternoon. Gusts 60-75 mph. I-15, US-20 impacted.

— South-central MT Livingston and Beartooth Foothills: Wind Advisory through midday today. Gusts 50- 60 mph. I-90 impacted.

— Northeast WY and west-central SD Black Hills: High Wind Watch late tonight through Wednesday morning. Gusts to 60 mph. I-90 impacted.

— Portions of central, southern and eastern WY: High Wind Warnings and Watches midday today through Wednesday afternoon. Gusts 55-65 mph. I-25, I-80 impacted.

— Much of southern ID and western UT: Wind Advisories through midday Wednesday. Gusts 45-55. This region is just west of I-15 in UT. I-15 (ID), I-80, I-84 impacted.

— Central AZ: Flood Watch Wednesday morning through Thursday morning. Flooding from a combination of rainfall and snowmelt is possible. I-17, US-60, US-93 potentially impacted.

— Central and southwest CO and adjacent southeast UT; north-central NM: Winter Storm Warnings Watches and Advisories this evening through Thursday night. Snow accumulations will range from 6-24 inches with many areas seeing at least a foot of snow. Wind gusts 40-50 mph. I-25, I-70 impacted.

Central:

— Northwest WI: Winter Storm Watch Thursday afternoon through Friday night. 8-16 inches snow possible. Wind gusts to 45 mph.

— Much of central and eastern TX; southeast OK; west-central and southwest AR; northwest LA: Slight chance of severe thunderstorms Thursday. Large hail, damaging winds and a few tornadoes all possible. I-10, I-20, I-30, I-35, I-40, I-45, I-49 potentially impacted.

Eastern:

— Southwest OH, adjacent southeast IN and north-central KY: Winter Weather Advisories this morning. Maybe an inch of snow covering the roads. I-64, I-70, I-71, I-72, I-75 impacted.

— Portions of eastern WV; far-west MD; south-central PA west of I-99: Winter Weather Advisories through this afternoon. Snow accumulations 2-6 inches. Heaviest amounts along west-facing slopes. Wind gusts to 55 mph. Snow squalls and blowing snow may create areas of sudden, near-zero visibility. These can be extremely dangerous conditions. I-68, I-76 / PA Turnpike, US-219 impacted.

— Almost all of NY except NYC, Long Island and Buffalo; northeast PA; northwest NJ; VT and NH; CT, RI and MA except along immediate coast: Winter Storm Warnings and advisories (northern and southern edges) this evening through Wednesday morning. Total snow accumulation of 8-16 inches will be common, along with wind gusts 35-45 mph. I-80, I-81, I-84, I-86, I-87, I-88, I-89, I-90, I-91, I-93, I-95, Mass Pike, NY Thruway impacted. NYC should see mostly rain. Boston will start as rain but may see several inches of snow tonight.

— MA Coastline from Cape Cod north: High Wind Warning through Wednesday afternoon. Gusts to 60 mph. I-95, US-6, MA-3 impacted.

— Coastal CT and Long Island NY: Wind Advisories this evening through midday Wednesday. Gusts to 50 mph. I-95 impacted.

— South-central and southeast PA; northeast WV; MD; central and southern NJ; DE; DC; northern and northwest VA: Wind Advisories today and tonight. Gusts to 50 mph. Major highways impacted include I-64, I-66, I-68, I-70, I-76, I-78, I-80, I-81, I-83, I-84, I-95, US-13, PA and NJ Turnpikes, Garden State Parkway.

— Southwest VA and northwest NC: Wind Advisory midday today through Wednesday morning. Gusts to 50 mph. I-77 impacted.

Tornado safety information for RVers (what to do!):

Weather Safety Tips

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

Weather Hazards as of Tuesday morning 14 March.Click on graphic for real-time update.
Flash Flood Risk today 14 March
Wind gusts this afternoon 14 March
Likelihood of winter weather impacting RV travel today 14 March (west)
Likelihood of winter weather impacting RV travel today 14 March (east)
Wind gusts tomorrow afternoon 15 March
Likelihood of winter weather impacting RV travel Wednesday 15 March (west)
Likelihood of winter weather impacting RV travel Wednesday 15 March (east)
Severe thunderstorm risk Thursday 16 March
Wind gusts Thursday afternoon 16 March
Likelihood of winter weather impacting RV travel Thursday 16 March (west)
Likelihood of winter weather impacting RV travel Thursday 16 March (east)
Total snowfall accumulations through Thursday night 16 March
Total precipitation amounts through Thursday night 16 March