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Planning to travel this week? Here’s what could impact your route.

• Repeated thunderstorms may flood roads, washes, canyons, and burn scars across much of Utah, Arizona and western Colorado today into Tuesday.
• Severe storms could disrupt travel across the northern Plains and eastern Rockies today and tonight, with damaging winds, hail, and a possible tornado.
• Watching a weak area of low pressure south of Louisiana as it drifts towards the Texas coast for possible development over the next few days.

Your route’s weather may vary from the general forecast — check your exact trip

This free daily forecast is separate from a paid RV Weather SureRoute subscription. SureRoute checks the weather along your specific route and travel timing.

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Significant travel weather for the next 2-3 days.

Weather Impacts Pacific:

— Southwestern coastal California near Santa Barbara: Wind Advisory today with northwest wind gusts up to 50 mph. US-101 impacted.

Weather Impacts Mountain:

— Eastern Montana, eastern Wyoming, and northeast and east-central Colorado: Isolated severe thunderstorms with damaging winds are possible today and tonight. I-25, I-70, I-76, I-80, I-90, I-94 potentially impacted.

— Far southern Wyoming, much of Utah, western Colorado, most of Arizona, and northwestern New Mexico: Flash flooding is possible today into Monday as storms may train or backbuild. Roads, urban areas, washes, canyons, and burn scars are especially vulnerable. I-8, I-10, I-15, I-17, I-19, I-40, I-70, I-80, I-84 potentially impacted.

— Central and southern Utah, including Capitol Reef and Zion National Parks, and much of Arizona: Flood Watches continue today and Monday, extending into early Tuesday across central and northern Arizona. Saturated ground in parts of Utah will increase runoff, while training storms in Arizona may produce isolated totals of 1 to 3 inches at rates over 1 inch per hour, flooding low-water crossings, washes, canyons, and urban roads. I-8, I-10, I-15, I-17, I-19, I-40, I-70 potentially impacted.

— Central and northeast Utah and adjacent northwestern Colorado: Isolated severe thunderstorms with strong winds and hail are possible today and tonight. I-15, I-70, US-6, US-40, US-50, US-89, US-191 potentially impacted.

— Much of Utah, western Colorado, much of Arizona, and northwestern New Mexico: Flash flooding is possible Monday into Tuesday as scattered monsoon storms may merge or train, producing rainfall rates up to 2 inches per hour. Urban roads, canyons, dry washes, burn scars, and favored terrain are especially vulnerable. I-8, I-10, I-15, I-17, I-19, I-40, I-70, I-80, I-84 potentially impacted.

— Northeastern Colorado: Isolated severe thunderstorms with damaging winds are possible Monday. I-70, I-76, I-80, US-6, US-24, US-30, US-34, US-36, US-40, US-85, US-287, US-385 potentially impacted.

Weather Impacts Central:

— North Dakota, much of South Dakota, western and south-central Nebraska, northwestern Kansas, and much of western and central Minnesota: Isolated severe thunderstorms with damaging winds, hail, and a possible tornado are expected today and tonight. I-29, I-70, I-76, I-80, I-90, I-94 potentially impacted.

— Much of Nebraska, northwestern Kansas, southwestern Wisconsin, and much of Iowa: Isolated severe thunderstorms with damaging winds and hail are possible Monday. I-29, I-35, I-39, I-70, I-76, I-80, I-90, I-94 potentially impacted.

— Central, northern, and northeastern Oklahoma: Heat Advisories today bring heat-index values up to 107 degrees, making daytime travel and outdoor stops more difficult.

— Southern Wisconsin, central and northern Iowa, and northern Illinois: Isolated severe thunderstorms are possible Tuesday. I-29, I-35, I-39, I-41, I-43, I-55, I-57, I-74, I-80, I-88, I-90, I-94 potentially impacted.

Weather Impacts East:

— Southern Michigan, northern Indiana, northern Ohio, western Connecticut, western, central and southern New York, New Jersey, Pennsylvania, Delaware, Maryland, and the District of Columbia and northern Virginia: Scattered severe thunderstorms are possible Tuesday. I-57, I-65, I-66, I-68, I-69, I-70, I-71, I-75, I-76, I-77, I-78, I-79, I-80, I-81, I-83, I-84, I-86, I-87, I-88, I-90, I-91, I-94, I-95, I-96, I-97, I-99 potentially impacted.

Tropical Weather Outlook for the next 7 days:

-- A weak area of low pressure located about 100 miles south of the coast of southeastern Louisiana continues to produce disorganized showers and thunderstorms. Some slow development of this system is possible during the next few days as it drifts westward across the northern Gulf. Interests along the Louisiana and Upper Texas coasts should monitor the progress of this system.

— Hurricane Karina is 820 miles west-southwest of the southern tip of Baja California. This system is not currently expected to threaten the continental United States.

— Tropical Storm Lowell is 1,150 miles east-southeast of Hilo, Hawaii. This system is not currently expected to threaten the continental United States.

Extended Hazard Outlook

Outlook Tuesday September 1st through Saturday September 5th:

— Tuesday, September 1 through Saturday, September 5: From the central and southern Plains through the Mississippi and Tennessee valleys into much of the Southeast: Hazardous heat may create challenging conditions. Major highways potentially affected include I-10, I-20, I-29, I-30, I-35, I-40, I-55, I-64, I-65, I-70, I-71, I-74, I-75, I-80, I-85, I-87, I-95.

— Tuesday, September 1 through Wednesday, September 2: From eastern Iowa and Illinois through the southern Great Lakes and Ohio Valley into West Virginia and southwestern Pennsylvania: Hazardous heat may create challenging conditions. Major highways potentially affected include I-55, I-64, I-65, I-70, I-71, I-74, I-75, I-76, I-79, I-80, I-90, I-94.

— Tuesday, September 1 through Thursday, September 3: Much of North Carolina and Virginia, most of Maryland and Washington, D.C., with small extensions into northeastern West Virginia and southern Delaware: Hazardous heat may create challenging conditions. Major highways potentially affected include I-40, I-64, I-70, I-74, I-81, I-85, I-95.

— Wednesday, September 2: From Pennsylvania and New Jersey through New York into southern New England, with small extensions into northwestern Delaware and northeastern Maryland: Severe weather may create rapidly changing and hazardous travel conditions. Major highways potentially affected include I-70, I-76, I-80, I-81, I-84, I-87, I-90, I-91, I-95.

— Wednesday, September 2 through Thursday, September 3: From northeastern Pennsylvania and northwestern New Jersey through New York and much of New England: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-80, I-81, I-84, I-87, I-90, I-91, I-95.

Extended Outlook September 5th through 11th:

— Sunday, September 6: From the Pacific Northwest and northern California through Idaho, the Great Basin and Montana into northwestern Wyoming: Much below normal temperatures are possible, creating cold-weather travel concerns. Major highways potentially affected include I-15, I-80, I-84, I-90.

— Sunday, September 6 through Thursday, September 10: From southeastern California and the Southwest across the central U.S. into the Ohio Valley and Southeast: Extreme heat may develop, creating challenging conditions. Extreme heat is likely Sunday, September 6 through Tuesday, September 8 from the central and southern Plains through the Mississippi and Tennessee valleys into Alabama and northwestern Florida. Major highways potentially affected include I-8, I-10, I-20, I-25, I-29, I-30, I-35, I-40, I-55, I-64, I-65, I-70, I-71, I-74, I-75, I-76, I-79, I-80, I-81, I-85, I-95.

— Sunday, September 6 through Monday, September 7: Florida, Georgia and much of South Carolina, extending into southeastern Alabama and southeastern North Carolina: Heavy precipitation may develop, creating localized flooding and difficult travel. Major highways potentially affected include I-4, I-10, I-75, I-95.

Confidence in the Extended Outlook:

Confidence is generally average for the large-scale pattern in the earlier period, though there is some timing uncertainty. Confidence decreases to below average later as the pattern becomes less amplified and model uncertainty increases.

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Your route’s weather may vary from the general forecast — check your exact trip

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Weather Maps and National Outlooks

For current NWS hazards, severe-storm and hurricane outlooks, heavy-rain risk, wind, smoke, heat/winter risk, and other always-updating weather graphics, visit:

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

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