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

• Multiple rounds of heavy rain may cause flash flooding in southeastern Virginia, the Carolinas, and parts of Georgia this afternoon and evening, with the strongest storms producing rainfall rates up to 3 inches per hour.
• Heat persists into the weekend across southern Nevada, central and southern California, and Arizona, with widespread temperatures above 100 degrees, and up to 118 degrees in the lower Colorado River Valley.
• Scattered severe storms with damaging winds threaten the northern Great Basin, northern Rockies, and northern Plains Saturday, with large hail also possible across parts of the northern Plains.

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:

— Parts of Nevada: Isolated severe thunderstorms may produce damaging winds today. I-11, I-15, I-40, I-80, US-6, US-50, US-93, US-95 potentially impacted.

— Northeastern Nevada: Scattered severe thunderstorms are possible Saturday, with damaging wind gusts the main threat. I-80, US-6, US-50, US-93 potentially impacted.

— Southern Nevada, central and southern California, and western Arizona, including Las Vegas, Death Valley National Park, and Joshua Tree National Park: Extreme Heat Warnings and Heat Advisories today, continuing Saturday in southeast California and southwest Arizona. Southern California coastal highs range from the mid-80s to around 102, while inland and desert highs reach 100 to 112, with the 115-to-118-degree heat focused on Death Valley and the Colorado River Valley. I-5, I-8, I-10, I-11, I-15, I-40 impacted.

— Central coast and parts of southern California north of Los Angeles: Red Flag Warnings today, with dry lightning and erratic outflow gusts up to 50 mph along the central coast and gusts up to 40 mph in interior southwestern California supporting rapid fire spread. I-5, US-101, CA-1, CA-2, CA-14, CA-25 impacted.

Weather Impacts Mountain:

— Southern Montana, southern Idaho, Wyoming, central and northern Utah, and northern Colorado: Scattered severe thunderstorms are possible Saturday, with severe wind gusts the main threat. The greatest risk of severe weather will be across far southeastern Idaho, southwestern Wyoming, and northern Utah. I-15, I-25, I-70, I-76, I-80, I-84, I-86, I-90, I-94 potentially impacted.

— Most of Wyoming and Utah, with far northern Colorado and far northwestern Arizona: Isolated severe thunderstorms today may produce damaging winds and hail. I-11, I-15, I-25, I-40, I-70, I-76, I-80, I-84, I-90 potentially impacted.

— Much of central and southern Arizona, including the Phoenix and Tucson metro areas; also Grand Canyon National Park below 4000 feet: Extreme Heat Warnings today, continuing Saturday across central and southern areas. High temperatures will reach 104 to 114 degrees, while lower elevations of Grand Canyon National Park reach 107 to 112 degrees. I-8, I-10, I-17, I-19, US-60, US-70, US-93, US-180, US-191 impacted.

Weather Impacts Central:

— Western, central and southern North Dakota, South Dakota, and western Nebraska: Isolated severe thunderstorms may produce damaging winds and hail today. I-29, I-76, I-80, I-90, I-94, US-2, US-6, US-12, US-14, US-16, US-18, US-20, US-26, US-30, US-34, US-52, US-81, US-83, US-85, US-212, US-281, US-385 potentially impacted.

— Central and southern North Dakota, most of South Dakota, and the Nebraska Panhandle: Scattered severe thunderstorms may produce damaging winds and large hail Saturday. The greatest risk of severe weather will be across southern North Dakota and northern South Dakota. I-80, I-90, I-94, US-12, US-14, US-16, US-18, US-20, US-26, US-30, US-52, US-83, US-85, US-212, US-281, US-385 potentially impacted.

— North Dakota, northern, central and eastern South Dakota, central and eastern Nebraska, northwestern Kansas, eastern, central and southern Minnesota, west-central and southwestern Wisconsin, and northern and west-central Iowa: Isolated severe thunderstorms are possible Sunday. I-29, I-35, I-35E, I-35W, I-39, I-70, I-80, I-90, I-94 potentially impacted.

— Western Florida Panhandle near Fort Walton Beach and Destin: A Flood Advisory continues through early this morning after 2 to 3 inches of rain, with up to 1 additional inch expected. Minor flooding may cover low-lying and poor-drainage roads. US-98 impacted.

Weather Impacts East:

— Eastern Kentucky, much of West Virginia, far-western Maryland, and western Pennsylvania: Dense valley fog this morning may reduce visibility below one-quarter mile, with improvement expected after 9 a.m. EDT. I-64, I-70, I-75, I-76, I-77, I-79, I-80 impacted.

— Down-east Maine: A Dense Fog Advisory this morning may reduce visibility to one-quarter mile or less, making driving difficult. US-1 impacted.

— Much of interior Maine: Isolated severe thunderstorms may produce damaging winds today. I-95, US-1, US-2, US-201 potentially impacted.

— Southern Connecticut and southeastern New York, including New York City, Long Island, and the lower Hudson Valley: Fog this morning may reduce visibility below one mile and locally to one-quarter mile or less. I-84, I-87, I-91, I-95, US-6, US-7, US-202, CT-2 impacted.

— Southern New Jersey, eastern Maryland, the District of Columbia, Delaware, most of Virginia, North Carolina, northern South Carolina, and northern Georgia: Isolated severe thunderstorms may produce damaging winds today. I-20, I-26, I-40, I-64, I-66, I-70, I-73, I-74, I-75, I-76, I-77, I-81, I-83, I-85, I-87, I-95, I-97 potentially impacted.

— Southeastern Virginia, central and eastern North Carolina, much of South Carolina, and adjacent southeastern Georgia: Flash flooding is possible this afternoon and evening as multiple rounds of heavy rain produce 2 inches or more, with the strongest storms capable of rainfall rates up to 3 inches per hour. Urban roads and low crossings may flood. I-16, I-20, I-26, I-40, I-64, I-73, I-74, I-77, I-85, I-87, I-95 potentially impacted.

Tropical Weather Outlook for the next 7 days:

— Tropical Storm Dolly is forecast to weaken into a tropical wave before reaching the Leeward Islands this weekend, with heavy rain possibly reaching the Virgin Islands and Puerto Rico Sunday and Monday. This system is not currently expected to threaten the continental United States.

— Tropical Storm Karina is forecast to strengthen into a hurricane over the weekend as it moves northwest and then west over the eastern Pacific. This system is not currently expected to threaten the continental United States.

— Tropical Storm Lowell is forecast to strengthen into a hurricane over the weekend as it turns west over the eastern Pacific. This system is not currently expected to threaten the continental United States.

Extended Hazard Outlook

Outlook Sunday August 30th through Thursday September 3rd:

— Sunday, August 30 through Thursday, September 3: From Kansas, Oklahoma, and Texas through Missouri and the lower Mississippi, Tennessee, and southern Ohio Valleys into the Deep South: Hazardous heat may create challenging travel 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-75, I-85.

— Tuesday, September 1 through Thursday, September 3: Georgia, South Carolina, North Carolina, and southeastern Virginia: Hazardous heat may create challenging travel conditions. Major highways potentially affected include I-20, I-40, I-74, I-75, I-85, I-87, I-95.

Extended Outlook September 4th through 10th:

— Friday, September 4 through Saturday, September 5: Pacific Northwest and northern Rockies, extending into northern California and northwestern Nevada: Much below normal temperatures may develop, creating cold-weather travel concerns. Major highways potentially affected include I-15, I-84, I-90.

— Friday, September 4 through Monday, September 7: Most of Arizona, and southwestern New Mexico: Heavy precipitation may develop, creating localized flooding and difficult travel. Major highways potentially affected include I-8, I-10, I-25.

— Friday, September 4 through Tuesday, September 8: From Colorado and New Mexico through the central and southern Plains, Mississippi and Ohio Valleys, Southeast, and Mid-Atlantic: Extreme heat may develop across this broad area. Major highways potentially affected include I-4, 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-87, I-95.

Confidence in the Extended Outlook:

Confidence is average for the earlier period, with generally good agreement on the large-scale pattern. Confidence decreases later in the outlook as timing and placement differences increase and uncertainty in the broader circulation and precipitation pattern grows.

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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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