Severe Weather Alerts: Storms, Snow, and Heat Across U.S.

Significant severe-weather outbreak developing from the Gulf Coast to the Mid-Atlantic today and Monday: Severe storms late today through Monday may bring damaging winds and tornadoes from Arkansas and Missouri to the Southeast and Mid-Atlantic.
Major winter storm in the Upper Midwest: Blizzard and Winter Storm Warnings from Minnesota and Wisconsin into Iowa and northern Illinois through Monday may produce 8–18 inches of snow, pockets of ice, and whiteout conditions.
Widespread high winds across the Plains and Rockies: High Wind Warnings with gusts 60–70 mph from Wyoming and Colorado into the central and southern Plains may create hazardous crosswinds.

From the RV Mobile Command Center in Brunswick GA:

Here are the relevant National Weather Service Warnings, Watches and Advisories that will impact RV and Road travel over the next several days.

Scroll down to the always-updating graphics immediately below this forecast for the latest information and for weather impacts that do not meet NWS Alert criteria.

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Weather Impacts Pacific Time Zone:

— Flood Warnings continue along I-5 in western Washington through midday, early evening, and in spots through Monday morning. High water near the Skookumchuck and Chehalis Rivers may flood low spots and secondary roads near the corridor, with localized delays around the south Sound and southwest Washington.

— Flood Advisories remain in effect through the afternoon near I-90 in southeast Washington and north-central Idaho, and near I-84 in northeast Oregon and southeast Washington. Minor flooding, runoff, and snowmelt may leave water over low-lying roads and slow travel in vulnerable areas.

— A Winter Weather Advisory begins late evening and continues through Monday midday in the Washington Cascades along I-5. Snow totals up to 8 inches may leave higher passes snow covered with reduced visibility and slower travel overnight into Monday morning.

— Heat Advisories begin Monday midday across much of California and continue through Monday night in parts of the I-5 corridor, then through Friday night across broader stretches of I-5, I-8, I-10, I-15, I-40, and I-80. Highs in the 80s to low 90s near the coast and low to mid 90s inland, with 95 to 105 in hotter interior valleys and deserts, may create dangerous heat stress for travelers.

— Extreme Heat Watches follow in parts of California beginning Monday night or Thursday and continuing through Friday night. A broader desert heat event also develops later in the week near the lower Colorado River and Mojave corridors, with temperatures up to around 106 possible on routes tied to I-10, I-15, and I-40.

Weather Impacts Mountain Time Zone:

— High Wind Warnings remain the main travel hazard from Wyoming and Colorado into New Mexico and west Texas. Gusts of 60 to 70 mph continue through afternoon or evening on exposed stretches of I-25, I-70, I-76, I-80, I-10, and I-20, including Sherman Summit on I-80, Eisenhower Tunnel on I-70, Glorieta Pass on I-25, and Tijeras Pass on I-40, where hazardous crosswinds will be difficult for high-profile vehicles.

— Wind Advisories continue across Utah and adjacent high terrain through late morning or midday. Gusts to 60 to 65 mph may make travel difficult near Cedar Mountain Summit on I-15, Parleys Summit on I-80, and along I-70 in Utah.

— Winter weather continues in the central Rockies and northern High Plains. Winter Weather Advisories through this morning or afternoon may bring 3 to 10 inches around Vail Pass on I-70, 4 to 8 inches near Sherman Summit on I-80, and lighter snow with blowing snow along I-25 in Wyoming, while Winter Storm Warnings and Blizzard Warnings continue from I-94 in North Dakota into I-29 and I-90 across South Dakota with reduced visibility and dangerous travel in open country.

— Red Flag (high fire danger) Warnings begin around midday and continue through late evening from New Mexico into west Texas. Dry air and gusty winds may support rapid fire spread near I-25, I-40, I-10, and I-20, with some corridors also seeing blowing dust and sudden visibility drops.

— High Wind Warnings also extend across the southern High Plains through late evening, with gusts to 65 mph near I-27, I-35, I-40, and I-44 in the Texas and Oklahoma Panhandles. Crosswinds and areas of blowing dust may sharply worsen driving conditions.

— Extreme Heat Watches develop later this week across Arizona and southern Nevada, with the hottest conditions beginning Wednesday afternoon and lasting into the weekend on I-8, I-10, I-15, I-17, and I-19. Highs from 100 to 108 are possible, making desert travel unusually warm for mid-March.

Weather Impacts Central Time Zone:

— A major winter storm continues from Minnesota and Wisconsin south into Iowa and northern Illinois. Blizzard Warnings and Winter Storm Warnings continue through Monday morning or Monday afternoon on parts of I-35, I-39, I-43, I-80, I-90, and I-94, with 8 to 18 inches of snow in the hardest-hit areas, pockets of ice up to one to three tenths of an inch, and whiteout conditions where strong winds combine with falling and blowing snow.

— High Wind Warnings spread across much of the Plains and upper Midwest through tonight and into Monday morning. Gusts of 60 to 65 mph are common on I-29, I-35, I-70, I-80, and I-90 from Nebraska and Kansas into Iowa and Missouri, creating hazardous crosswinds for RVs and other high-profile vehicles.

— In the southern Plains, High Wind Warnings, Red Flag Warnings, and Blowing Dust Advisories continue through late evening from the Texas and Oklahoma Panhandles south into west and north Texas. Gusts to 65 mph may create dangerous crosswinds on I-27, I-35, I-40, and I-44, while dust may sharply reduce visibility and fire danger remains high.

— Wind Advisories expand across Arkansas, Louisiana, Mississippi, Tennessee, Kentucky, Illinois, Indiana, and Michigan beginning late this morning or this afternoon and continuing into Monday morning or midday. Gusts generally of 40 to 50 mph will make for difficult travel on corridors including I-24, I-40, I-55, I-57, I-64, I-65, I-69, I-71, I-74, I-75, I-80, and I-94.

— Flood Warnings continue along parts of the Wabash, White, Kaskaskia, Black Warrior, and other rivers through early this week. High water may affect low-lying roads near I-20, I-64, I-65, and I-69, with localized detours possible near river crossings.

— There is an enhanced severe-weather risk late this afternoon through tonight from the Mid South into the lower Ohio Valley. A developing squall line may produce widespread damaging wind gusts, with a couple of strong tornadoes possible from northeastern Arkansas and southeast Missouri into southern Illinois, western Kentucky, and Tennessee, affecting corridors including I-40, I-55, I-57, I-24, I-65, and I-69.

— A separate severe-weather corridor may also organize late tonight across the eastern Gulf Coast states. Supercells capable of tornadoes, some possibly strong, may affect travel from the Florida Panhandle into southeastern Alabama and adjacent Georgia, including I-10, I-65, and routes feeding toward I-75.

Weather Impacts Eastern Time Zone:

— Wind Advisories begin late this morning or this afternoon from Ohio and Pennsylvania into upstate New York, then spread into northern New England later tonight. Gusts of 45 to 55 mph will make travel difficult on I-68, I-70, I-71, I-75, I-76, I-77, I-79, I-80, I-81, I-84, I-86, I-87, I-89, and I-90 through Monday morning or Monday evening.

— High Wind Warnings begin this afternoon across parts of Pennsylvania and New York and continue into Monday, with gusts up to 60 mph on I-79, I-81, I-86, and I-90. High Wind Watches then develop Monday evening into Tuesday morning in southern New England on I-90 and I-93, where stronger southerly winds may create hazardous crosswinds.

— Flood Warnings continue along parts of eastern Ohio through the afternoon and in some spots through Monday morning. High water may affect roads near I-80 and nearby low-lying routes.

—There is a Moderate risk of severe thunderstorms on Monday from northern South Carolina across North Carolina into Virginia and Maryland, with broader significant severe potential extending from eastern Georgia and the Florida Panhandle into Pennsylvania. Tornadoes, some potentially strong, and particularly damaging winds are most likely Monday afternoon on corridors including I-20, I-26, I-77, I-81, I-85, I-95, and I-64.

— The severe-weather threat also reaches the eastern Gulf Coast late tonight. Supercells from the Florida Panhandle into adjacent Alabama and Georgia may produce tornadoes and hail near I-10, I-65, and I-75 before the severe-weather outbreak shifts east and north to the Southeast and Mid-Atlantic.

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Looking for real-time road conditions? Here’s a link, courtesy of the Federal Highway Administration, to all the individual State 511 websites.