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

• Broad areas of severe thunderstorms threaten routes today through Wednesday from the northern Plains and Midwest into the Ohio Valley and Mid-Atlantic, with damaging winds, hail, and tornadoes possible.
• Repeated heavy rain could produce flash flooding from Indiana and Ohio into West Virginia today and especially Tuesday, with rainfall totals up to 6 inches and saturated ground worsening runoff.
• Heat impacts the Southwest, and a broad area from Kansas into the lower Mississippi Valley today. Temperatures in the desert southwest may reach 112 degrees, with heat index values up to 111 in Missouri and Illinois.

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:

— Southern Nevada, central and southeastern California, and western Arizona, including Death Valley National Park, Las Vegas, and Yuma: Extreme Heat Warnings today, with actual temperatures 105 to 110 degrees in the San Joaquin Valley and apparent temperatures up to 120 degrees in southeastern California and western Arizona. I-5, I-8, I-10, I-11, I-15, I-40 impacted.

— Central and Southern California coasts: Coastal Flood Advisories during evening high tides today through Thursday, with up to 1.6 feet of inundation above ground possible along San Francisco, San Pablo, and Monterey bays. Minor tidal flooding may cover low-lying roads and parking areas farther south through Wednesday.

Weather Impacts Mountain:

— East-central and parts of southeast Idaho, much of Wyoming, and adjacent southwestern South Dakota: Red Flag Warnings today, with gusts outside of thunderstorms to 30 mph and thunderstorm outflow gusts to 55 mph supporting rapid and erratic fire spread. I-15, I-25, I-80, I-84, I-90, US-14, US-16, US-18, US-20, US-26 impacted.

— South-central and southeastern Colorado, including Colorado Springs and Pueblo: Heat Advisories today, with temperatures exceeding 105 degrees.

— Northeast and east-central Colorado: Isolated severe thunderstorms with damaging wind and hail are possible today. I-70, I-76, I-80, US-6, US-24, US-30, US-34, US-36, US-40, US-50, US-287, US-385 potentially impacted.

— South-central and southeastern Arizona, including Tucson and Organ Pipe Cactus National Monument: A Flood Watch today, with rainfall rates exceeding 1 inch per hour and isolated rates of 2 inches or more per hour. Flash flooding may cover urban roads, poor-drainage areas, and low-water crossings. I-10, I-19 potentially impacted.

— South-central and southeastern Arizona: Isolated severe thunderstorms with damaging wind gusts are possible today. I-8, I-10, I-17, I-19, US-60, US-70, US-89, US-191 potentially impacted.

— South-central and southeastern Arizona: Flash flooding is possible Tuesday and again Wednesday as persistent heavy rain affects the region. I-10, I-19, US-89, US-191 potentially impacted.

— Parts of central and northwestern New Mexico, including Albuquerque: A Heat Advisory today, with temperatures up to 102 degrees making daytime travel and outdoor stops more difficult.

Weather Impacts Central:

— East-central Kansas, just south of Kansas City: A FLASH FLOOD WARNING continues through late this morning. Between 1.5 and 2 inches of rain has fallen, rates of 1 to 2 inches per hour are expected, and another 0.5 to 1.5 inches is possible; flooding of highways, streets, underpasses, and low-lying areas is ongoing or expected shortly. I-35, US-50, US-56 and surrounding highways may be impacted.

— Southern North Dakota, South Dakota, Nebraska, northern Kansas, southern Minnesota, southern Wisconsin, Iowa, northern Missouri, and most of Illinois: Scattered severe thunderstorms with damaging winds, large hail, and a tornado possible this afternoon and evening. The greatest risk of severe weather will be across south-central North Dakota, much of South Dakota, southwestern Minnesota, northwestern Iowa, and northern Illinois. I-29, I-35, I-39, I-41, I-43, I-55, I-57, I-70, I-72, I-74, I-76, I-80, I-88, I-90, I-94 potentially impacted.

— Central and southern North Dakota, most of South Dakota, northern Nebraska, Minnesota along and south of I-94, southern Wisconsin, Iowa, and much of Illinois: Scattered severe thunderstorms with damaging winds and a tornado are possible Tuesday afternoon and evening. The greatest risk of severe weather will be across northern Illinois. I-29, I-35, I-35E, I-35W, I-39, I-41, I-43, I-55, I-57, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

— Much of South Dakota, Nebraska, northern Kansas, Iowa, northern, central and eastern Missouri, Illinois, Kentucky, and north-central and eastern Tennessee: Scattered severe thunderstorms with damaging wind and hail are possible Wednesday afternoon and evening in the Plains, with isolated severe wind farther east. The greatest risk of severe weather will be across southwestern South Dakota and western Nebraska. I-24, I-29, I-35, I-39, I-40, I-44, I-49, I-55, I-57, I-64, I-65, I-69, I-70, I-72, I-74, I-76, I-80, I-88, I-90, I-94 potentially impacted.

— Central and southern Kansas, much of Oklahoma, north-central Texas, much of Missouri, central and southern Illinois, southwestern Indiana, western Kentucky, western Tennessee, northern, central and eastern Arkansas, northeastern Louisiana, and much of western Mississippi: Extreme Heat Warnings and Heat Advisories are in effect today, continuing through Wednesday in eastern Kansas, Missouri, and parts of Illinois and through Thursday in southeastern Missouri, southern Illinois, southwestern Indiana, and western Kentucky. Heat index values may reach 111 degrees in Missouri and Illinois. I-35, I-44, I-49, I-55, I-64, I-70 impacted.

— Northern and central Wisconsin: Dense Fog Advisories this morning, with visibility of one-quarter mile or less in places. Rapid visibility changes may make driving difficult. I-39, I-94, US-2, US-8, US-10, US-45, US-51 impacted.

— Far eastern Iowa and northern Illinois: Repeated heavy storms Tuesday may produce rainfall rates up to 3 inches per hour and local totals up to 6 inches, with prior rain increasing the flash-flood threat. I-39, I-55, I-57, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

— Northern and central Illinois into northwestern Indiana: A Flood Warning and Flood Advisories continue this morning after 2 to 3 inches of rain, with more than 4 inches near Dwight and up to 3 inches elsewhere. Standing water and flooding of roads and streets may be slow to recede. I-39, I-55, I-57, I-80, I-88, US-24 impacted.

— Northeastern Illinois: Two to three rounds of heavy storms today may produce rainfall rates up to 3 inches per hour where storms merge or train, creating a flash-flood threat. I-39, I-41, I-43, I-55, I-57, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

Weather Impacts East:

— Southern Michigan and northern Indiana: A combination of Flood Watches and a Flood Advisory continue this morning. More than 2 inches has fallen in parts of Michigan, totals may exceed 4 inches, and another 2 inches is possible elsewhere; poor-drainage roads, urban areas, and low-water crossings may flood. I-69, I-80, I-90, I-94, I-96, US-24, US-27, US-30, US-31, US-131 impacted.

— Southern Michigan, Indiana, Ohio, northern Kentucky, most of West Virginia, much of New York along and south of I-90, New Jersey, Pennsylvania, Maryland, the District of Columbia, Delaware, and northern Virginia: Scattered severe thunderstorms with damaging winds and a tornado are possible this afternoon and evening. I-57, I-64, I-65, I-66, I-68, I-69, I-70, I-71, I-74, 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-94, I-95, I-96, I-97, I-99 potentially impacted.

— Southern Michigan, Indiana, Ohio, central and eastern Kentucky, northeastern Tennessee, West Virginia, southern New Jersey, western and southern Pennsylvania, Maryland, the District of Columbia, Delaware, Virginia, and central and northern North Carolina: An organized line of severe thunderstorms may produce damaging winds, with a tornado possible Tuesday afternoon and evening. I-26, I-40, I-57, I-64, I-65, I-66, I-68, I-69, I-70, I-71, I-73, I-74, I-75, I-76, I-77, I-78, I-79, I-80, I-81, I-83, I-85, I-87, I-90, I-94, I-95, I-96, I-97, I-99 potentially impacted.

— Most of Indiana and adjacent southern Michigan, Ohio, central and eastern Kentucky, West Virginia, southwestern Pennsylvania, far-western Maryland, and western and southwest Virginia: Repeated heavy storms Tuesday may produce rainfall rates up to 3 inches per hour and local totals up to 6 inches, with earlier rain likely to saturate the ground. The greatest flash-flood risk will be across a small area of southeastern Ohio and southwestern West Virginia. I-26, I-57, I-64, I-65, I-68, I-69, I-70, I-71, I-74, I-75, I-76, I-77, I-79, I-80, I-81, I-90, I-94, I-99 potentially impacted.

— Most of Indiana, southwest Ohio, Kentucky, northern and eastern Tennessee, southwestern West Virginia, southern and southwest Virginia, most of North Carolina, and northern South Carolina: Isolated severe thunderstorms with damaging wind gusts are possible Wednesday afternoon and evening. I-20, I-26, I-40, I-64, I-65, I-69, I-70, I-71, I-73, I-74, I-75, I-77, I-79, I-80, I-81, I-85, I-87, I-90, I-94, I-95 potentially impacted.

— Most of Indiana, Ohio, north-central Kentucky, much of West Virginia, western Pennsylvania, and far-western Maryland: Two to three rounds of heavy storms today may produce rainfall rates up to 3 inches per hour where storms merge or train, creating a flash-flood threat. I-57, I-64, I-65, I-68, I-69, I-70, I-71, I-74, I-75, I-76, I-77, I-79, I-80, I-90, I-94, I-99 potentially impacted.

— Central and eastern Indiana, central and southern Ohio, northeast Kentucky, much of West Virginia, and far-southwestern Virginia: Organized storms may produce flash flooding Wednesday. I-64, I-65, I-69, I-70, I-71, I-74, I-75, I-77, I-79, I-81 potentially impacted.

— Eastern Tennessee, southeastern West Virginia, and southwestern Virginia: A Dense Fog Advisory and Special Weather Statements for fog this morning, with visibility falling to one-quarter mile or less. Rapid visibility changes may make driving difficult. I-26, I-40, I-64, I-75, I-77, I-81 impacted.

— Southwest Connecticut, southeastern New York, including New York City, and northeastern New Jersey: Heat Advisories today, with heat index values up to 98 degrees.

— South Florida: Heat Advisories today, with heat index values up to 110 degrees making daytime travel and outdoor stops more difficult.

— A tropical disturbance in the eastern and central tropical Atlantic has a 60 percent chance of developing during the next seven days while moving westward to west-northwestward. This system is not currently expected to threaten the continental United States.

Outlook Wednesday August 12th through Sunday August 16th:

— Wednesday, August 12 through Thursday, August 13: From New Mexico and southeastern Colorado through the central and southern Plains into Missouri and the lower Ohio Valley: Hazardous heat may create challenging conditions. Most of the broader area is a Wednesday concern, with southeastern New Mexico, southern Kansas, northern Oklahoma, and northwestern Texas continuing through Thursday. Major highways potentially affected include I-10, I-20, I-25, I-29, I-35, I-40, I-55, I-64, I-65, I-70.

— Wednesday, August 12 through Sunday, August 16: From southeastern Kansas, Oklahoma, and northern and southeastern Texas through Missouri and the Lower Mississippi Valley to the Southeast and Virginia: Hazardous heat may create challenging conditions. The Virginia extension is limited to Wednesday through Thursday, while southeastern Texas continues through Saturday. Major highways potentially affected include I-4, I-10, I-20, I-30, I-35, I-40, I-55, I-64, I-65, I-74, I-75, I-85, I-87, I-95.

— Thursday, August 13 through Friday, August 14: Southeastern Wyoming, much of Colorado, western Nebraska, and northwestern Kansas: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-25, I-70, I-76, I-80.

— Thursday, August 13 through Friday, August 14: From eastern Nebraska and Iowa through Missouri and Illinois into southwestern Indiana, with fringes of southeastern South Dakota and northeastern Kansas: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-29, I-35, I-55, I-64, I-70, I-74, I-80.

Extended Outlook August 17th through August 23rd:

.— Monday, August 17 through Thursday, August 20: From Utah and Arizona through the Rockies, northern and central Plains, Upper Midwest, Great Lakes and Ohio Valley into the Mid-Atlantic and Northeast: Heavy precipitation may develop, creating localized flooding and difficult travel. Major highways potentially affected include I-8, I-10, I-25, I-29, 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-84, I-85, I-87, I-90, I-91, I-94, I-95.

— Monday, August 17 through Sunday, August 23: From southeastern Colorado and eastern New Mexico across the central and southern Plains and into the Lower Mississippi Valley and Southeast through southeastern Virginia: Extreme heat may develop across this broad region. Extreme heat is expected Monday through Wednesday from southeastern Kansas, Oklahoma and southwestern Missouri through eastern Texas and the Lower Mississippi Valley into Alabama and the western Florida Panhandle. Major highways potentially affected include I-4, I-10, I-20, I-29, I-30, I-35, I-40, I-55, I-64, I-65, I-70, I-74, I-75, I-80, I-85, I-87, I-95.

Confidence in the Extended Outlook:

Confidence is generally good in the large-scale pattern. Uncertainty increases later in the earlier outlook regarding the exact placement of disturbances and heavy-rain areas, while broader agreement remains good for the extended period.

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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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