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

• Significant flash-flood threat across the Southwest and southern Rockies through Wednesday, with widespread heavy rain and locally severe flooding.
• Heavy rain and flash-flood risk expands into the central and southern Plains Tuesday and Wednesday, with the greatest threat across Texas, Oklahoma and Kansas.
• Widespread dense fog across the Upper Midwest and Great Lakes this morning, with visibility dropping to a quarter mile in many areas.

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:

— Coastal portions of northern Washington, including San Juan County and the western Whatcom County lowlands: A Wind Advisory is in effect from 2 a.m. to 2 p.m. Tuesday. South winds of 20 to 30 mph may gust to 45 mph, with possible downed tree limbs and a few power outages. Routes potentially affected: I-5.

— Southeastern California, southern Nevada, and northwestern Arizona, including the upper Colorado River Valley and Lakes Mead, Mohave, and Havasu: A Flood Watch continues through early Tuesday for thunderstorms capable of flash flooding, including flooded low-water crossings. A Slight Risk of excessive rainfall applies today in southern Nevada. Routes potentially affected: I-11, I-15, I-40, US-93, US-95, CA-62.

— Southern California, including the Santa Barbara County coast, Santa Ynez Mountains, Ventura County mountains, and Interstate 5 Corridor: A Wind Advisory is in effect from 6 p.m. today to 6 a.m. Tuesday. North winds of 15 to 30 mph may gust to 45 mph, with possible downed limbs and isolated power outages. Routes potentially affected: I-5, US-101, CA-138.

— Coastal California from San Francisco and Monterey Bays to the Los Angeles, Orange County, and San Diego County coasts, including the North Bay shoreline, Big Sur, Malibu, and Catalina and Santa Barbara Islands: Coastal Flood Advisories are in effect. San Francisco and Monterey Bay shorelines may see up to 1.2 feet of inundation through Thursday; Los Angeles and Ventura County beaches and nearby islands face moderate flooding and 4- to 7-foot surf through Tuesday, while minor flooding, 3- to 5-foot surf and local 7-foot sets continue along Orange and San Diego County beaches through Wednesday

Weather Impacts Mountain:

— A portion of northwest Montana, including the East Glacier Park Region and Northern High Plains: A High Wind Watch is in effect from late tonight through Tuesday evening. Southwest winds of 30 to 50 mph could gust to 75 mph. Routes potentially affected: US-2, US-89.

— Central, southern, and southeastern Utah and western, south-central, and southeastern Colorado, including the Wasatch Plateau, San Rafael Swell, Bryce Canyon, Zion, Canyonlands, Lake Powell, San Juan Mountains, Upper Rio Grande Valley, southern Sangre de Cristo Mountains, and southeastern Colorado plains: Flood Watches cover the region. Southern Utah may receive 1 to 2 inches through Tuesday evening; watches continue in western and south-central Colorado through late Tuesday night and shift into southeastern Colorado Tuesday through Wednesday afternoon. Routes potentially affected: I-15, I-25, I-70, US-6, US-40, US-50, US-84, US-85, US-89, US-160, US-163, US-191, US-287, US-385, US-491, US-550.

— Much of Arizona: Flood Watches cover much of Arizona through Tuesday evening, with flooding possible at low-water crossings, washes, creeks, burn scars, roads, and underpasses. Southeastern valleys may receive 1 to 2 inches and the Sky Islands and White Mountains 2 to 4 inches; Central La Paz and south-central Arizona could see rainfall rates above 1 inch per hour tonight into Tuesday. Routes potentially affected: I-10, I-15, I-17, I-19, I-40, US-60, US-70, US-89, US-89A, US-93, US-95, US-160, US-163, US-180, US-191.

— Most of New Mexico and far-west Texas: Flood Watches are in effect from this afternoon or evening through late Tuesday night or Wednesday morning. Saturated soils will heighten flash flooding in arroyos, burn scars, urban areas, low-water crossings, creeks, and rivers; southern New Mexico and far-west Texas could receive repeated rainfall totaling up to 4 inches. Routes potentially affected: I-10, I-25, I-40, US-54, US-56, US-60, US-62, US-64, US-70, US-82, US-84, US-87, US-90, US-180, US-285, US-380, US-491, US-550.

Weather Impacts Central:

— Eastern North Dakota and northwestern Minnesota: A Slight Risk of excessive rainfall is in effect today as showers and thunderstorms may produce flash flooding. Routes potentially affected: I-29, I-94, US-2, US-10, US-52, US-59, US-281.

— Southeastern South Dakota, central and eastern Nebraska, western and central Kansas, the Oklahoma Panhandle and western Oklahoma, central and western Texas, southwestern and south-central Minnesota, and north-central and western Iowa: Flood Watches are in effect Tuesday into Wednesday for southwestern Kansas, northwestern Oklahoma, the Texas Panhandle, and northwestern Texas. Tuesday’s broader excessive-rain threat spans the full region, with the greatest risk across north-central and northwestern Texas and far western Kansas; repeated storms may produce several more inches over recently soaked ground. Routes potentially affected: I-10, I-20, I-27, I-29, I-35, I-40, I-70, I-76, I-80, I-90.

— Eastern and southern Nebraska, Kansas, Oklahoma, central and northern Texas, south-central and southeastern Minnesota, southwestern and south-central Wisconsin, Iowa, western Missouri, and northwestern Arkansas: The excessive-rain and flash-flood threat shifts east Wednesday across this broad corridor. The area at greatest risk includes parts of Oklahoma and central and northern Texas, where overlapping rounds of heavy rain could worsen flooding. Routes potentially affected: I-10, I-20, I-29, I-30, I-35, I-40, I-70, I-74, I-80, I-90, I-94.

— South-central Nebraska, western and central Kansas, much of Oklahoma, and central Texas: Severe thunderstorms are possible Wednesday afternoon and evening. The area at greatest risk centers on central and southern Oklahoma and central and northern Texas, with large hail, damaging winds, and perhaps a tornado or two; isolated hail and wind may extend into western and central Kansas and south-central Nebraska. Routes potentially affected: I-10, I-20, I-30, I-35, I-40, I-44, I-70, I-80.

— West-central and southwestern Kansas: A Dense Fog Advisory remains in effect this morning. Visibility may fall to one-quarter mile or less. Routes potentially affected: US-50, US-54, US-56, US-83, US-400.

— Central, southern, and eastern Minnesota, northern, central, and western Wisconsin, and northern and northeastern Iowa: Dense Fog Advisories cover broad portions of Minnesota and Wisconsin this morning, with visibility one-quarter mile or less. Locally dense fog also extends into northern and northeastern Iowa and additional parts of southeastern Minnesota and central Wisconsin this morning; northern Iowa visibility is generally around or below one mile. Routes potentially affected: I-35, I-35E, I-35W, I-90, I-94, US-2, US-8, US-10, US-12, US-18, US-20, US-45, US-51, US-53, US-59, US-61, US-63, US-69, US-71, US-141, US-169.

— Northeastern and east-central Illinois and northwestern Indiana: Dense Fog Advisories remain in effect this morning in northwestern Indiana, with visibility one-quarter mile or less. Additional locally dense fog is affecting northeastern Illinois through early to mid-morning. Routes potentially affected: I-39, I-55, I-57, I-65, I-72, I-74, I-80, I-88, I-90, I-94.

— Lake County, Illinois, along the Des Plaines River near Gurnee and Russell: A Flood Warning continues through this evening. Minor flooding is occurring and forecast, with the river expected to fall below flood stage this afternoon or evening. Routes potentially affected: I-94.

Weather Impacts East:

— North-central Indiana and south-central and southeastern Michigan, including the La Porte, Starke, Pulaski, White, Lafayette, Detroit, Ann Arbor, Flint, and Berrien County areas: Dense Fog Advisories cover parts of north-central Indiana this morning, with visibility as low as one-quarter mile. Locally dense fog elsewhere in southern Michigan may briefly reduce visibility to one-quarter mile or less this morning. Routes potentially affected: I-65, I-69, I-74, I-75, I-80, I-90, I-94, I-96.

— Eastern and south-central Kentucky, especially river, creek, and lake valleys: Locally dense valley fog may reduce visibility to one-quarter mile or less this morning, generally clearing by 9 a.m. Routes potentially affected: I-64, I-75, US-23, US-25E, US-27, US-60, US-68.

— Central and eastern Massachusetts and most of Rhode Island, including Cape Cod, the islands, Boston, Worcester, Providence, Newport, and Block Island: A Flood Watch continues through late tonight. Additional rainfall of 1 to 1.5 inches may cause urban flooding and rises on small rivers, streams, and other low-lying locations. Routes potentially affected: I-84, I-90, I-93, I-95, US-1, US-6, US-44, US-202.

— Coastal portions of central and eastern Massachusetts, including eastern Essex County, Boston, eastern Norfolk and Plymouth counties, Cape Cod, Martha’s Vineyard, and Nantucket: A Coastal Flood Advisory continues until midnight. Up to one-half foot of inundation may flood vulnerable lots, parks, and roads near shorelines and tidal waterways.

— Coastal central and southern Connecticut, Downstate New York and New York City, and eastern New Jersey, including Westchester, the Bronx, northern Long Island, Middlesex and Monmouth counties, Atlantic County, and Cape May: Coastal Flood Advisories continue through early to mid-afternoon. Waterfront areas in southern Connecticut and Downstate New York may see 1 to 2 feet of inundation; up to 1 foot is expected around New York City and eastern New Jersey, with up to one-half foot around Atlantic County and Cape May. Vulnerable roads and low-lying properties may flood.

— Maryland’s Eastern Shore, southern coastal Delaware, and Virginia’s Eastern Shore, including the Maryland Beaches, Dorchester, Wicomico, and Somerset areas, Sussex County and Delaware Beaches, and Accomack and Northampton counties: A Coastal Flood Warning is in effect in southern Delaware through this afternoon, with around 1 foot of inundation and possible road closures. Coastal Flood Advisories cover Maryland’s Eastern Shore and Virginia’s Eastern Shore through this afternoon around Dorchester, Wicomico, and Somerset, with up to 1 foot of shallow flooding. Routes potentially affected: US-9, US-13, US-113, DE-1.

— Coastal North Carolina and coastal portions of eastern South Carolina, including Pender, New Hanover, and Brunswick counties, the lower Cape Fear River and Wilmington, Horry and Georgetown counties, and Charleston and coastal Colleton County: Coastal Flood Advisories are in effect through midday, lasting through this afternoon. along the lower Cape Fear River. Up to 1 foot of inundation may cover vulnerable roads and tidal areas from the Wilmington area through Horry and Georgetown counties; Charleston and coastal Colleton County may see up to one-half foot around the morning high tide.

— Atlantic coastal Florida from Duval and Flagler counties and the St. Johns River basin to Palm Beach, Broward, and Miami-Dade counties: Coastal Flood Advisories continue today. Minor flooding of lots, parks, and roads may persist along northeast Florida and the St. Johns River basin through this evening.; moderate coastal flooding and dangerous rip currents affect the Palm Beach, Broward, and Miami-Dade coasts through this afternoon.

— The Florida Keys, including the Upper, Middle, and Lower Keys: A Coastal Flood Warning remains in effect for the Upper Florida Keys through Tuesday morning, with major saltwater flooding, numerous possible road closures, and inundation of low-lying property and some infrastructure. A Coastal Flood Advisory covers the Middle and Lower Keys, where low-elevation streets and lots may flood and seawalls, docks, and storm drains may be overtopped. Routes potentially affected: US-1.

Tropical Weather Outlook for the next 7 days:

— Hurricane Polo southwest of Cabo San Lazaro, Mexico: Category 3 Hurricane Polo has 115 mph winds and is expected to cross Baja California Sur late today, then reach northwestern mainland Mexico tonight or early Tuesday as a hurricane. Its moisture will contribute to the Southwest and southern High Plains heavy-rain and flash-flood threat.

— Tropical Depression Fay, east-northeast of Bermuda, has 35 mph winds and should become post-tropical late Tuesday.

— A disturbance in the central Atlantic has a 50% chance of development within 48 hours and 60% within seven days. No threat to the continental US.

— Tropical Storm Rachel, south of Acapulco Mexico, has 45 mph winds and is forecast to become a hurricane Tuesday while remaining well offshore of southern Mexico.

Extended Hazard Outlook

Outlook Wednesday, September 30th through Sunday, October 4th:

— Wednesday, September 30 through Friday, October 2: From southeastern Colorado and northeastern New Mexico through the central and southern Plains into the Upper Midwest, Arkansas, and northwestern Louisiana: Heavy rain may create localized flooding and difficult travel across the broader area Wednesday, with the concern continuing through Friday across much of Texas and Oklahoma, most of Arkansas, and northwestern Louisiana. Major highways potentially affected include I-10, I-20, I-25, I-29, I-30, I-35, I-40, I-70, I-80, I-90, I-94.

— Thursday, October 1: From southeastern Kansas and northeastern Oklahoma through the mid-Mississippi Valley into the southern Great Lakes: Heavy rain may create localized flooding and difficult travel. Major highways potentially affected include I-29, I-35, I-55, I-64, I-65, I-70, I-74, I-80, I-90, I-94.

— Saturday, October 3 through Sunday, October 4: From southeastern Louisiana through the Tennessee and Ohio valleys into the southern Appalachians and northwestern Florida: Heavy rain may create localized flooding and difficult travel. Major highways potentially affected include I-10, I-20, I-40, I-55, I-64, I-65, I-71, I-75, I-85.

Extended Outlook Monday, October 5th through Sunday, October 11th:

— Monday, October 5 through Sunday, October 11: From Texas and the Gulf Coast through the Southeast and Mid-Atlantic into the Northeast: Heavy precipitation may develop across the broader area Monday through Wednesday, creating localized flooding and difficult travel. The concern may continue across most of Florida through Sunday. Major highways potentially affected include I-4, I-10, I-20, I-40, I-55, I-64, I-65, I-70, I-74, I-75, I-76, I-80, I-81, I-84, I-85, I-87, I-90, I-91, I-95.

Confidence in the Extended Outlook:

Confidence is above average in the earlier period, with reasonably similar large-scale guidance, though smaller-scale timing uncertainty grows toward the weekend. Confidence is average around the transition into the extended period and improves later because of good agreement on the amplified large-scale pattern.

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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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