Severe Thunderstorms Threaten Upper Midwest and Great Lakes

Severe thunderstorms possible tonight into Tuesday night across the Upper Midwest and Great Lakes States. Large hail and damaging wind gusts are the primary hazards.
Strong to severe thunderstorms are likely across the southern to central Plains on Wednesday afternoon and evening, and will likely pose a large hail and severe wind threat.
Strong winds and low humidities today in Wyoming Colorado and the adjacent High Plains.

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:

— No significant impacts to road travel today or Tuesday.

Weather Impacts Mountain Time Zone:

— Southern Idaho. Wind Advisory. Beginning this afternoon through late evening. Winds 25 to 35 mph with gusts up to 55 mph and areas of blowing dust. Hazardous crosswinds for high-profile vehicles and reduced visibility in dust. I-15 and I-86 impacted.

— South-central Montana: Snow tonight. Up to an inch of snow on the Bozeman Pass. I-90 impacted.

— Marias Pass and the East Glacier region of northern Montana. Winter Weather Advisory through midday today. Snow accumulations between 2 and 6 inches near Marias Pass, additional snow up to 2 inches near East Glacier, and wind gusts 35 to 45 mph. Slick roads, areas of blowing snow, and slower travel over higher terrain. I-90 and I-15 impacted.

— North-central and eastern Colorado. Red Flag Warning beginning around midday today and continuing through late evening. Wind gusts 35 to 45 mph with very low humidity. I-25, I-70, I-76, and I-80 impacted.

— Southwest, central, and north-central Wyoming. Red Flag Warning through late tonight. Winds 20 to 35 mph with gusts 45 to 55 mph and very low humidity. I-25, I-80, and I-90 impacted.

— Southeast Wyoming into northeast Wyoming and adjacent western South Dakota. Red Flag Warning beginning this afternoon through late evening. Winds 15 to 25 mph with gusts 30 to 55 mph and very low humidity. I-90 impacted.

Weather Impacts Central Time Zone:

— Northeast North Dakota into northwest Minnesota. Light freezing rain and snow travel impacts this morning. Snow accumulation up to 2 inches with a light glaze of ice possible. Slick roads and slower travel, especially on bridges and elevated surfaces. I-29 impacted.

— Western and north-central Nebraska. Red Flag Warning beginning around midday through Tuesday morning. Wind gusts up to 35 mph with very low humidity. I-76 and I-80 impacted.

— Texas Panhandle. Red Flag Warning beginning this afternoon through late evening. South winds 15 to 25 mph with gusts up to 35 mph and very low humidity. I-40 impacted.

— Oklahoma. Wind Advisory beginning late this morning through late evening. South winds 15 to 30 mph with gusts up to 45 mph. Hazardous crosswinds for high-profile vehicles and scattered blowing debris. I-35, I-40, I-44, and I-75 impacted.

— Southeast Minnesota into Wisconsin, northern Illinois, and western Indiana. A few severe thunderstorms with large hail are possible tonight and early Tuesday morning. Strongest storms probable across southern Wisconsin and northern Illinois. I-35, I-39, I-43, I-55, I-57, I-65, and I-94 impacted.

— Eastern Iowa, southern and eastern Wisconsin and northern Illinois. Scattered severe thunderstorms are expected Tuesday afternoon into Tuesday night. Damaging wind gusts and hail are the primary hazards. I-39, I-43, I-55, I-57, I-65, I-72, I-80, I-90, and I-94 impacted.

— Texas Panhandle and western Oklahoma: Isolated severe thunderstorms possible Tuesday and Tuesday evening with localized wind and hail. I-27, I-40 potentially impacted.

— Central and east Texas into Oklahoma and eastern Kansas. Strong to severe wind gusts are likely Wednesday afternoon into Wednesday night. Primary hazards are severe winds and large hail. I-10, I-29, I-30, I-35, I-44, and I-45 impacted.

Weather Impacts Eastern Time Zone:

— Interior Massachusetts and adjacent southern New England. Elevated fire weather conditions. Through early evening. Dry air and southwest wind gusts 20 to 30 mph. Any fire starts could spread more quickly and create localized visibility issues near roadways. I-84, I-90, I-91, I-93, and I-95 impacted.

— Northern and eastern Maine. Winter Weather Advisory. Beginning Tuesday evening through Wednesday morning. Mixed precipitation with snow and sleet up to 2 inches and ice accumulations around one tenth to one quarter inch. Slippery roads and slower travel, especially into Wednesday morning. I-95 impacted.

— Lower Michigan. Isolated strong to severe thunderstorms are possible Monday afternoon into Monday night. Storm-related travel delays are possible. I-69, I-75, I-90, I-94 and I-96 impacted.

— The Ohio Valley and lower Great Lakes into the interior Northeast. Isolated strong to severe thunderstorms are possible Tuesday afternoon into Tuesday night. Damaging wind gusts and hail are the primary hazards. I-69, I-71, I-74, I-75, I-77, I-79, I-81, I-87, I-88, I-90, I-94, I-96, and I-99 impacted.

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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.