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

• Tropical Storm Bertha brings strong winds, flash-flooding rain, and storm surge to the northern Gulf Coast from western Florida through Louisiana today into Thursday.
• Numerous severe thunderstorms threaten travel from the Ohio Valley through the Northeast, Mid-Atlantic, and Carolinas today, with damaging winds, large hail, and tornadoes possible.
• Monsoon thunderstorms may flood roads and low crossings across Nevada, Arizona, Utah, Wyoming, and New Mexico today, with another Intermountain West flash-flood threat Wednesday.

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

— Washington, northern Oregon, and northern Idaho: Heat Advisories continue today through Thursday, with temperatures reaching 105 degrees in the Columbia Basin and around 100 degrees elsewhere, including Seattle, Portland, Spokane, and nearby inland areas.

— Central and east-central Oregon: A Red Flag Warning is in effect Wednesday, with isolated dry thunderstorms and outflow gusts up to 35 mph supporting rapid fire spread. US-20, US-26, US-97, US-395 impacted.

— Northeast, central and west-central Nevada and adjacent east-central California: Flood Watches are in effect today as thunderstorms produce rainfall rates around 1 inch per hour, while slow-moving or repeated storms may flood urban areas, burn scars, creeks, and low crossings near Lake Tahoe and Reno. I-80, US-6, US-50, US-93, US-95, US-395 impacted.

— Southern Nevada, Southern California, and northwestern and southwestern Arizona: Extreme Heat Watches and Advisories starting Wednesday and continuing through Monday, with temperatures potentially reaching 120 degrees in Death Valley National Park, 118 in Southern California deserts, 116 near Joshua Tree National Park and the lower Colorado River, and around 93 degrees along the Santa Barbara coast and inland Los Angeles coast. I-5, I-8, I-10, I-11, I-15, I-40 impacted.

Weather Impacts Mountain:

— Southwest Montana, central and southeast Idaho, western and central Wyoming, much of Utah, and western and central Colorado: Flash flooding is possible Wednesday as numerous thunderstorms develop in deep monsoon moisture, with the heaviest rain favored in western Wyoming and northern Utah. I-15, I-25, I-70, I-80, I-84, I-86 potentially impacted.

— Much of Wyoming, including Yellowstone and Grand Teton National Parks: Flood Watch continues today through Thursday, with slow-moving thunderstorms capable of flooding creeks, streams, and low-lying areas; Wednesday afternoon and evening are the most likely periods for flooding. I-25, I-80, I-90, US-14, US-16, US-20, US-26, US-30 impacted.

— Much of Utah, including Bryce Canyon, Capitol Reef, and Zion National Parks: Flood Watch continues today and Wednesday, with flash flooding possible in slot canyons, dry washes, burn scars, urban areas, and other low-lying locations. I-15, I-70, US-6, US-40, US-50, US-89, US-191 impacted.

— Northern, eastern, and southeastern Arizona: Flood Watches are in effect today, with localized totals of 1 to 3 inches and rainfall rates of 1 to more than 2 inches per hour over saturated ground; flash flooding may cover dry washes, creeks, slot canyons, and low-water crossings. I-10, I-17, I-19, I-40, US-60, US-70, US-89, US-93, US-191 impacted.

— South-central Arizona, including Phoenix: Extreme Heat Watch starting Thursday through Monday, with afternoon temperatures of 105 to 115 degrees. I-8, I-10, I-17, US-60 potentially impacted.

— South-central New Mexico: A Flood Watch is in effect today, with rainfall rates over 1 inch per hour falling on saturated ground and increasing the risk of flash flooding at low-water crossings and poor-drainage areas. US-70, US-380 impacted.

Weather Impacts Central

— Coastal Louisiana, Mississippi, and Alabama: Tropical Storm Warnings, Tropical Storm Watches, and Storm Surge Watches are in effect today, with local gusts up to 45 mph. Storm surge may reach 2 to 4 feet above ground along southeastern Louisiana and coastal Mississippi beginning Wednesday, with 1 to 3 feet around coastal Alabama; additional rainfall of 1 to 3 inches may flood low roads and coastal access points. I-10, I-12, I-55, I-65, US-43, US-49, US-61, US-90, US-190 impacted.

— Florida Panhandle coast: Tropical Storm Watches and a Coastal Flood Advisory are in effect today and Wednesday, with gusts up to 35 mph, additional rainfall of 1 to 3 inches, storm surge up to 2 feet above ground, and breaking surf of 3 to 11 feet capable of flooding low coastal roads. I-10, US-98, US-231 impacted.

— Southeastern Nebraska, northeastern Kansas, and adjacent northwestern Missouri: Flash flooding is possible Thursday from locally heavy rainfall. I-29, I-35, I-49, I-70, I-80, US-6, US-30, US-34, US-36, US-50, US-56, US-59, US-71, US-77, US-136, US-281 potentially impacted.

— Southern Kansas, much of Oklahoma, northwest, north-central and eastern Texas, southern Missouri, southern Illinois, western Kentucky and adjacent southwest Indiana, western and central Tennessee, Arkansas, Louisiana, Mississippi, and northern Alabama: Extreme Heat Warnings and Advisories are in effect today, with heat index values as high as 116 degrees. I-2, I-20, I-22, I-24, I-30, I-35, I-40, I-44, I-45, I-49, I-55, I-57, I-64, I-69, I-69E impacted.

— Southeastern Missouri, southeastern Illinois, Kentucky and Tennessee, and northeastern Arkansas: Scattered severe thunderstorms are possible this afternoon and early evening, with damaging winds the primary threat and large hail and tornadoes also possible. I-22, I-24, I-40, I-55, I-57, I-59, I-64, I-65, I-69, I-70, I-75 potentially impacted.

— Middle Tennessee: A Flood Watch covers this evening through Wednesday morning, with torrential thunderstorms capable of several inches of rain and flash flooding of low roads, creeks, and streams. I-24, I-40, I-65, US-31E, US-64, US-70, US-127, US-412 impacted.

Weather Impacts East

— Most of Indiana, Ohio, Kentucky and Tennessee, West Virginia, most of Vermont, much of Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania, Maryland, the District of Columbia, Delaware, Virginia, North Carolina, Upstate South Carolina, and northern Georgia: Numerous severe thunderstorms are possible this afternoon and early evening, with swaths of damaging wind the primary threat and large hail and tornadoes also possible. The greatest risk of severe weather will be across southern and eastern Ohio, north-central Kentucky, most of West Virginia, most of Pennsylvania, New Jersey, Maryland, the District of Columbia, Delaware, and northern Virginia. I-24, I-26, I-40, I-59, 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-84, I-85, I-86, I-87, I-88, I-89, I-90, I-91, I-93, I-94, I-95, I-96, I-97, I-99 potentially impacted.

— Central, southern and eastern Ohio, central and eastern Kentucky, northeastern Tennessee, West Virginia, Massachusetts, Rhode Island, Connecticut, southeastern New York, most of Pennsylvania, New Jersey, Maryland, the District of Columbia, Delaware, and Virginia: Flash flooding is possible today, with thunderstorms capable of rainfall rates near 2 inches per hour and flooding of urban roads and low crossings. I-26, I-40, I-64, I-65, I-66, I-68, 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-85, I-86, I-87, I-88, I-90, I-91, I-93, I-95, I-97, I-99 potentially impacted.

— Southern and eastern Ohio, central and eastern Kentucky, much of West Virginia, southwestern Pennsylvania, and southwestern Virginia: Flood Watches cover today and Wednesday, with training thunderstorms capable of 2 to 4 inches of rain and flash flooding of urban roads, poor-drainage areas, and low-water crossings. I-64, I-65, I-68, I-70, I-71, I-75, I-76, I-77, I-79 impacted.

— Maine, most of New Hampshire, most of Massachusetts, Rhode Island, Connecticut, tsoutheastern New York and Long Island, most of New Jersey, southeastern Pennsylvania, central and eastern Maryland, the District of Columbia, Delaware, most of Virginia, most of North Carolina, and northern South Carolina: Scattered severe thunderstorms are possible Wednesday, primarily with damaging wind gusts, while a tornado is also possible. The greatest risk of severe weather will be across the southern DELMARVA Peninsula, Virginia east of the Blue Ridge Mountains, and north-central and northeast North Carolina. I-20, I-26, I-40, I-64, I-66, I-70, I-73, I-74, I-76, I-77, I-78, I-80, I-81, I-83, I-84, I-85, I-86, I-87, I-89, I-90, I-91, I-93, I-95, I-97 potentially impacted.

— New York City, northern and western New Jersey, southeastern Pennsylvania, and northern Delaware: Flood Watches cover today and Wednesday, with multiple rounds of storms producing 1 to 2 inches of rain, isolated totals of 3 to 4 inches, and peak rates of 2 to 3 inches per hour; urban and poor-drainage roads may flood quickly. I-76, I-78, I-80, I-87, I-95, US-13, US-30, US-40, US-202, US-322 impacted.

— Eastern Tennessee, southern and eastern Virginia, North Carolina, northern and central South Carolina, and northern Georgia: Flash flooding is possible Wednesday as another round of heavy thunderstorms affects roads and low crossings. I-20, I-24, I-26, I-40, I-59, I-64, I-73, I-74, I-75, I-77, I-81, I-85, I-87, I-95 potentially impacted.

— Southeastern North Carolina and northeastern South Carolina: Heat Advisories are in effect today, with heat index values up to 107 degrees creating dangerous heat for travel and outdoor stops.

— Much of North Carolina, South Carolina, and central and northern Georgia: Flash flooding is possible Thursday as very heavy rain continues near a stalled front, with repeated rainfall over areas affected on prior days increasing runoff and road-flooding concerns. I-16, I-20, I-26, I-40, I-73, I-74, I-75, I-77, I-85, I-87, I-95 potentially impacted.

— Southeastern South Carolina: A Dense Smoke Advisory continues through 10 a.m. today, with visibility of 1 mile or less and locally one-quarter mile or less making travel difficult. I-26, US-52 impacted.

— Florida Big Bend coast: A Wind Advisory and Coastal Flood Advisories are in effect today, with gusts up to 40 mph and minor coastal flooding capable of covering vulnerable shoreline roads. US-98 impacted.

Tropical Weather Outlook for the next 7 days:

— Tropical Storm Bertha is 110 miles south-southwest of Panama City, Florida, with maximum sustained winds of 50 mph. It may strengthen to 60 mph later today before moving westward near or along the northern Gulf Coast and gradually weakening through midweek. Rainfall of 2 to 4 inches, with isolated totals near 6 inches, may cause flash flooding from western Florida through southern Louisiana through Thursday; storm surge could raise water 2 to 4 feet above normally dry ground from the mouth of the Mississippi River to the Alabama-Florida border.

Outlook Thursday July 23rd through Monday July 27th:

— Thursday, July 23: Much of Washington, eastern Oregon, and western Idaho: Hazardous heat may create challenging conditions. Major highways potentially affected include I-84, I-90.

— Thursday, July 23 through Monday, July 27: From interior southern California and the Southwest through the southern Plains, Lower Mississippi Valley, Gulf Coast, and Florida: Hazardous heat may create challenging conditions. Major highways potentially affected include I-4, I-8, I-10, I-15, I-20, I-25, I-30, I-35, I-40, I-55, I-65, I-75, I-85, I-95.

— Thursday, July 23 through Monday, July 27: From the northern Rockies through the northern Plains and Upper Midwest: Hazardous heat may create challenging conditions. Major highways potentially affected include I-15, I-25, I-29, I-35, I-70, I-76, I-80, I-90, I-94.

— Thursday, July 23 through Saturday, July 25: Nebraska, Kansas, southwestern Iowa, and Missouri: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-29, I-35, I-70, I-80.

— Thursday, July 23 through Monday, July 27: From Louisiana and the central Gulf Coast through the Southeast into the Carolinas and southeastern Virginia: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-10, I-20, I-40, I-55, I-64, I-65, I-74, I-75, I-85, I-87, I-95.

Extended Outlook July 28th through August 3rd:

— Tuesday, July 28 through Sunday, August 2: Southwestern Oregon and northwestern California: Strong winds may develop, creating locally difficult driving. US-101, CA-1 impacted.

— Tuesday, July 28 through Monday, August 3: From southern California and the Intermountain West through the Rockies, Plains, and Upper Midwest into the Mississippi and Tennessee valleys and Florida: Extreme heat may develop, creating challenging conditions. Extreme heat is likely Tuesday, July 28 through Thursday, July 30 across the Southwest, central Rockies, central and southern Plains, and mid- and lower Mississippi Valley. Major highways potentially affected include I-4, I-5, I-8, I-10, I-15, I-20, I-25, I-29, I-30, I-35, I-40, I-55, I-64, I-65, I-70, I-74, I-75, I-76, I-80, I-84, I-90, I-94, I-95.

— Tuesday, July 28 through Thursday, July 30: From the central Gulf Coast through northern Florida, southern Georgia, and the coastal Carolinas: Heavy precipitation may develop, creating localized flooding and difficult travel. Major highways potentially affected include I-4, I-10, I-40, I-65, I-75, I-95.

Confidence in the Extended Outlook:

Confidence is above average for the earlier period because of good agreement on the large-scale pattern, although individual systems and local impacts remain less certain. Confidence decreases to average later as the pattern becomes less amplified and precipitation details become more uncertain.

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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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