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

• Remnants of Isaias: Although Isaias is now a ‘post-tropical cyclone’, it still packs a punch: Widespread flooding, a few tornadoes and still-damaging winds threaten the Southeast and Carolinas today.
• Tropical Storm Rachel: Landfall expected tonight near the U.S.–Mexico border, bringing lash flooding and strong gusty winds to Southern California and the Southwest.
• Major Montana Winter Storm: Up to 20 inches of snow and strong winds bring hazardous travel through Monday.

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:

— A small portion of north-central and central Oregon, southwestern Oregon, and a small portion of far northern California, including the Shasta, Scott and lower Klamath River valleys: Freeze Warnings and Freeze Watches Sunday and Monday morning for far northern California and Southwest Oregon. Morning low temperatures in the upper 20’s.

— Small portions of California’s Central Coast and Bay Area, including San Francisco, Monterey Bay, Big Sur, the San Francisco Bay shoreline and San Pablo Bay: Coastal Flood Advisories continue through Tuesday around San Francisco, Monterey Bay and Big Sur and through Wednesday near San Pablo Bay. High tides may produce up to 1.4 feet of inundation in low-lying shoreline areas, with road flooding, isolated closures, sneaker waves and breaking waves up to 16 feet.

— Northern, western and east-central Nevada and small portions of the California Deserts and central Sierra Nevada, including the Sierra Front, West Humboldt Basin and Lahontan Basin: Red Flag Warnings are in effect today. Southwest winds of 15 to 25 mph may gust 35 to 45 mph while humidity falls to 14 to 25 percent, allowing fires to spread rapidly. Routes potentially affected: I-80, US-6, US-50, US-93, US-95, US-395, CA-4, CA-89, CA-120.

— Eastern, central and southern Nevada; portions of the California Deserts and a small portion of the Bay Area; and northwestern, west-central and southwestern Arizona, including Death Valley and the lower Colorado Valley: Wind Advisories span the weekend. Bay Area gusts near 45 mph ease this morning; eastern Nevada may see 50 mph gusts and blowing dust with visibility near one mile or less today into Monday; and the desert region expects 45 to 55 mph gusts Sunday, with tree limbs and scattered power outages possible. Routes potentially affected: I-8, I-10, I-11, I-15, I-40, I-80.

— Southern, eastern and central Nevada; the California Deserts and Southern California; and northwestern and west-central Arizona, including Death Valley, the Mojave Desert, Las Vegas Valley, Ruby Mountains and East Humboldt Range: Flood Watches cover much of the region through Sunday night. Flash flooding, low-water-crossing inundation, and debris flows near Nevada burn scars are possible. Routes potentially affected: I-5, I-8, I-10, I-11, I-15, I-40, I-80.

— A small portion of the California Deserts and a portion of south-central and southeastern Nevada: An isolated severe-weather threat covers a small portion of the California Deserts today, where an isolated severe wind gust is possible. Sunday, the risk extends into south-central and southeastern Nevada, with isolated severe wind gusts and a brief tornado possible during the morning. Routes potentially affected: I-8, I-10, I-11, I-15, I-40, US-60, US-93, US-95, CA-62, CA-78, CA-86.

— A small portion of the California Deserts and a portion of Southern California, including the San Diego coast, inland valleys and mountains, Coachella Valley, San Gorgonio Pass and Joshua Tree National Park: Tropical Storm Watches and Flood Watches are in effect as Rachel approaches. Current coastal and valley wind forecasts remain below tropical-storm force with gusts to 30 mph, while mountains and deserts may gust to 55 mph; inland valleys and mountains could receive 1 to 3 inches or locally more, with rainfall rates near one inch per hour and flash flooding possible. Routes potentially affected: I-5, I-8, I-10, I-15, US-395, CA-2, CA-18, CA-62, CA-78, CA-86, CA-138.

— A small portion of Southern California, including Malibu, Long Beach, Point Mugu, Port Hueneme and the San Diego-area coast: Coastal Flood Warnings continue through Sunday afternoon, with damaging seawater flooding possible at vulnerable south-facing beaches and significant flooding, erosion and road inundation farther south. Surf of 5 to 9 feet and strong rip currents peak Sunday; Coastal Flood Advisories then continue in some areas through Tuesday. Routes potentially affected: I-5, I-8, I-10, I-15, CA-1, CA-78.

Weather Impacts Mountain:

— Western, central and south-central Montana, including the Southern Rocky Mountain Front, MacDonald Pass, Little Belt, Highwood, Snowy, Judith, Big Belt, Bridger, Castle, Absaroka, Beartooth and Crazy Mountains, Butte and the Melville Foothills: Winter Storm Warnings today through Monday. Most areas expect 5 to 18 inches of wet snow, with 10 to 20 inches along the Southern Rocky Mountain Front and nearby high terrain; gusts of 35 to 45 mph may produce blowing snow, downed branches and isolated power outages. Routes potentially affected: I-15, I-90, US-12, US-87, US-89, US-191, US-212, US-287.

— Much of western and central Montana, including the East Glacier Park region, Northern High Plains, Flathead and Mission valleys, Helena and Gallatin valleys, Bitterroot and Sapphire Mountains, Livingston and Bozeman Pass: Winter Weather Advisories begin this evening and continue through Monday, with 2 to 6 inches in many valleys and lower elevations and 5 to 10 inches in mountains; gusts to 40 mph may bring blowing snow, poor visibility and isolated outages. A Wind Advisory brings 40 mph gusts to the Flathead and Mission valleys tonight. Routes potentially affected: I-15, I-90, US-2, US-12, US-87, US-89, US-93, US-191, US-287.

— Central, eastern and southern Idaho; much of Utah; and western, central and northern Arizona, including the Snake River Plain, Utah canyon country, Grand Canyon Country and the Mogollon Rim: Flood Watches cover the region into Monday. Idaho may receive 1 to 2 inches, locally 3, with flash flooding possible in washes, slot canyons and burn scars. Routes potentially affected: I-8, I-10, I-11, I-15, I-17, I-40, I-70, I-80, I-84, I-86.

— Northern, west-central and southern Utah, including the Wasatch Front, Great Salt Lake Desert, Sevier and upper Sevier valleys, Bryce Canyon Country and the central and southern mountains: Wind Advisories continue into Sunday morning with gusts of 50 to 55 mph. High Wind Watches then cover Sunday, with gusts near 60 mph in west-central and southern valleys and in excess of 70 mph across the central and southern mountains; property damage and power outages are possible. Routes potentially affected: I-15, I-70, I-80, I-84, US-6, US-40, US-50, US-89.

— Much of Arizona, and central and southern Utah: An isolated severe-weather threat covers western, central and south-central Arizona today, with isolated severe wind gusts possible. Sunday, an isolated severe-weather threat extends across much of Arizona and central and southern Utah, bringing isolated severe wind gusts and a brief tornado risk in the lower Colorado Valley. Routes potentially affected: I-8, I-10, I-11, I-15, I-17, I-19, I-40, I-70.

— Much of Arizona, including the Phoenix and Tucson areas, Sonoran Desert, Tohono O’odham Nation, Grand Canyon Country, Mogollon Rim and White Mountains: Wind Advisories Sunday, with south to southwest winds of 20 to 35 mph and gusts of 45 to 55 mph. Tree limbs and scattered power outages are possible, while desert blowing dust may sharply reduce visibility in spots. Routes potentially affected: I-8, I-10, I-17, I-19, I-40, US-60, US-70, US-89, US-89A, US-93, US-160, US-163, US-180, US-191.

Weather Impacts Central:

— Northeastern and east-central South Dakota and much of western, central and northern Minnesota: Warm, dry and windy weather will produce elevated to near-critical fire conditions today. Gusts of 25 to 45 mph and humidity of 25 to 40 percent may support rapid grass or crop-fire spread; blowing dust may reduce visibility in eastern South Dakota and southwestern Minnesota. Routes potentially affected: I-29, I-35, I-90, I-94, US-2, US-10, US-12, US-14, US-53, US-59, US-71, US-81, US-169, US-212, MN-61.

— A small portion of South Texas and East Texas, including the Coastal Bend: A Coastal Flood Advisory continues until 1 AM Monday, with minor seawater flooding of lots, parks and roads and isolated road closures possible.

— A small portion of southeastern Missouri, West and Middle Tennessee, northeastern and east-central Arkansas, northern and central Mississippi, a portion of northeastern Louisiana and a small portion of central Louisiana, and central and northwestern Alabama: Wind Advisories associated with the remnants of Isaias remain in effect today. Gusts of 40 to 50 mph may bring down tree limbs and cause scattered power outages, with the strongest gusts from the Mid-South into Mississippi, northeastern Louisiana and northwestern Alabama. Routes potentially affected: I-20, I-22, I-24, I-40, I-55, I-59, I-65, I-69, I-85.

— West and Middle Tennessee, northern Mississippi, and central and northern Alabama: Flood Watches continue through Sunday morning. Rainfall totals generally 1-4 inches with a few places seing up to 5-inch totals. Flooding of streams, low-lying roads and urban areas is possible. Routes potentially affected: I-20, I-22, I-24, I-40, I-55, I-59, I-65, I-85.

— A small portion of east-central Louisiana and a portion of southeastern Louisiana, the Mississippi Coast, and portions of the eastern and western Florida Panhandle: Coastal Flood Advisories continue today with minor to moderate flooding of lots, parks and roads. Along the Florida Panhandle, dangerous surf may reach 11 to 14 feet in some areas, with significant beach erosion and strong rip currents continuing into Sunday.

— Northern and northeastern Alabama: High Wind Warnings continue through early evening. East winds of 20 to 30 mph may produce localized gusts of 50 to 60 mph in north-central and northeastern Alabama, with gusts up to 45 mph farther east; downed trees, power lines and widespread outages are expected. Routes potentially affected: I-20, I-59, I-65, US-72, US-231, US-278, US-431.

— South-central and southeastern Alabama, including Andalusia, Elba, Enterprise, Geneva and the Pea River: Flood Warnings remain in effect. Four to 12 inches of rain has fallen in parts of the area, with ongoing or imminent flooding, numerous closed roads and rising streams; minor Pea River flooding near Elba is forecast tonight into Sunday, with a crest near 30.6 feet. Routes potentially affected: US-29, US-84, US-231.

— The western Florida Panhandle: Flood Warnings continue this morning after 6 to 12 inches of rain. Flooding is ongoing or imminent along rivers, creeks, urban drainage systems and other low-lying locations, even though additional heavy rain has ended in some areas. Routes potentially affected: I-10, US-98.

— A portion of the eastern Florida Panhandle: Severe thunderstorms are possible across the eastern Florida Panhandle today. Thunderstorms may produce tornadoes, with the threat spreading northeastward during the day. Routes potentially affected: I-10, US-19, US-27, US-98.

Weather Impacts East:

— A small portion of north-central and west-central Georgia, including Henry, Lamar, Pike and Spalding counties: A FLASH FLOOD WARNING continues until 11:45 AM EDT. Radar indicates 1.5 to 2.5 inches has fallen, with another 1 to 2 inches possible; flash flooding of small streams, streets, highways, underpasses and other low-lying areas is ongoing or expected shortly. Routes potentially affected: I-75, US-19, US-23.

— Michigan’s Upper Peninsula: A Red Flag Warning covers the western Upper Peninsula through Sunday evening, while elevated wildfire potential extends across most of the Upper Peninsula today. South winds may gust 30 to 35 mph with humidity near 32 percent, supporting rapid fire spread. Routes potentially affected: I-75, US-2, US-41, US-45.

— Southeastern Indiana and central, western and eastern Kentucky, including Lake Cumberland and the Pine, Black, Cumberland and Log mountains: Strong east to southeast winds develop today as Isaias approaches. Gusts of 30 to 40 mph are expected across southeastern Indiana and much of Kentucky, while a Wind Advisory covers southeastern Kentucky higher terrain with gusts of 35 to 50 mph through early Sunday. Routes potentially affected: I-64, I-65, I-71, I-75, US-23, US-25E, US-27, US-31, US-31E, US-60, US-68, US-421.

— A small portion of northwestern Tennessee, a small portion of north-central Tennessee and a portion of northern Tennessee, Southwest Virginia, western North Carolina, Upstate South Carolina and northern Georgia, including the Smokies and Blue Ridge: High Wind Warnings and Wind Advisories continue through early Sunday. Higher terrain in East Tennessee, Southwest Virginia and western North Carolina may gust to 60 or 70 mph, while northern Georgia may reach 50 mph and surrounding lower elevations 46 to 50 mph; downed trees, power lines and widespread mountain outages are possible. Routes potentially affected: I-20, I-24, I-26, I-40, I-59, I-75, I-81, I-85.

— East Tennessee, a small portion of Western Virginia, parts of southwest and south-central Virginia; western, eastern and coastal North and South Carolina; much of Georgia; and northwestern and west-central Florida: Flood Watches through Sunday. Southern Blue Ridge totals may reach 5 to 6 inches with landslides possible; Georgia and the eastern Carolinas could receive 3 to 8 inches in persistent bands; and coastal Georgia, South Carolina and northern Florida may see 1 to 3 inches of rain. Routes potentially affected: I-4, I-10, I-20, I-40, I-74, I-75, I-81, I-85, I-95.

— Central, southern and eastern Mountains of West Virginia; southwest and Blue Ridge Virginia; a small portion of western North Carolina; western Maryland; and southwestern and west-central Pennsylvania: Wind Advisories begin this afternoon and continue into Sunday. Most areas expect gusts of 40 to 55 mph, with isolated 60 mph gusts along favored West Virginia and Southwest Virginia ridgelines; tree limbs and scattered power outages are possible. Routes potentially affected: I-64, I-68, I-70, I-76, I-77, I-81.

— A portion of the Maine Southern Coast and a small portion of southern interior Maine: A Freeze Warning is in effect tonight and early Sunday morning, with temperatures as low as 29 degrees expected.

— Southern New Jersey, most of Maryland, the District of Columbia, Delaware, much of Virginia, and much of North Carolina, and central, eastern and the Lowcountry of South Carolina: A severe-weather threat develops Sunday afternoon and evening. Widely scattered severe storms may produce a few tornadoes and damaging wind gusts. Routes potentially affected: I-20, I-40, I-64, I-70, I-74, I-81, I-85, I-87, I-95.

— A small portion of central Maryland, including the Annapolis shoreline: A Coastal Flood Watch is in effect Sunday afternoon and evening. Tides 1.5 to 2 feet above normal may produce up to one foot of inundation, flooding low-lying waterfront roads and parking areas around Annapolis. Routes potentially affected: I-97, US-50, US-301.

— A small portion of western North Carolina and a small portion of Upstate South Carolina, including the Pigeon, French Broad and Broad rivers: Flood Advisories continue into Tuesday. Pigeon and French Broad headwaters may receive 4 to 9 inches with isolated 10- to 11-inch totals, while Broad River headwaters may see 6 to 8 inches, locally 10, before lower totals downstream; shallow flooding of low roads, campgrounds, parks and farmland is expected. Routes potentially affected: I-26, I-40, I-85, US-19, US-74.

— Eastern, coastal and central North Carolina, South Carolina, much of Georgia and a portion of northern Florida: A severe-weather threat covers the region today. The primary threat is tornadoes with supercells from the eastern Florida Panhandle northeastward through Georgia, South Carolina and into North Carolina, persisting into the evening. Routes potentially affected: I-10, I-16, I-20, I-26, I-40, I-73, I-74, I-75, I-77, I-85, I-95.

— Small portions of coastal and eastern North Carolina, Eastern and Lowcountry South Carolina, and a small portion of east-central Georgia and a small portion of southeastern Georgia, including the lower Cape Fear River and Charleston: A Coastal Flood Warning near Charleston brings 1 to 2 feet of inundation this morning, making numerous roads impassable. Coastal Flood Advisories elsewhere bring up to one-half foot of flooding along tidal roads and waterways, with 3- to 6-foot surf and dangerous rip currents along parts of the North Carolina coast. Routes potentially affected: I-26, US-17, US-52, US-78.

— Much of Georgia, portions of Upstate and Central South Carolina, and northwestern Florida: Wind Advisories continue today with gusts of 40 mph across much of Georgia and nearby South Carolina and up to 50 mph across south-central Georgia and northwestern Florida. Tree limbs may fall and scattered power outages are possible. Routes potentially affected: I-10, I-16, I-20, I-75, I-85, US-1, US-19, US-23, US-25, US-27, US-78, US-84, US-98, US-280.

— Northeastern, west-central and northwestern Florida, including the St. Johns River basin, Trout River and the Gulf Coast: Coastal Flood Advisories bring minor flooding of lots, parks and roads. Northeastern Florida advisories continue through Sunday afternoon; west-central and northwestern Gulf Coast flooding is mainly this morning, while surf near the eastern Florida Panhandle may reach 11 feet and rip currents persist into Sunday.

— Northwestern and west-central Florida, including the Withlacoochee and Little Manatee rivers and Cypress Creek: Flood Warnings continue or are forecast on several rivers. Minor flooding is occurring on the Withlacoochee and is forecast today on the Little Manatee; Cypress Creek is expected to rise above flood stage early Monday, with additional rises possible. Routes potentially affected: I-75, US-41, US-301.

Tropical Weather Outlook for the next 7 days:

— Near Montgomery, Alabama: Post-Tropical Cyclone Isaias has 35 mph winds and is moving north at 14 mph toward the Tennessee Valley, with dissipation forecast Sunday. Rainfall of 4 to 8 inches, locally 15, is possible across southern Alabama, the Florida Panhandle and Big Bend, and southwestern Georgia, with considerable flooding and Southern Appalachian landslides possible.

— 640 Miles south-southwest of San Diego, California: Tropical Storm Rachel has 60 mph winds and is accelerating northeast, with landfall expected near the U.S.-Mexico border tonight before rapid weakening Sunday. Its moisture may bring 1 to 3 inches of rain, locally 5, significant flash and urban flooding, strong higher-terrain gusts, and worsening coastal flooding and erosion across the Southwest and Southern California.

— 125 Miles south of Manzanillo, Mexico: Category 4 Hurricane Simon has 145 mph winds and could strengthen to 155 mph before approaching west-central Mexico tonight or Sunday. Rainfall of 10 to 20 inches, locally 30, may cause life-threatening flooding and mudslides, with dangerous storm surge and destructive waves near landfall.

Extended Hazard Outlook

Outlook through Friday, October 16:

— Monday, October 12 through Tuesday, October 13: Washington, northern Oregon, and northwestern Idaho: Frost or freeze concerns may create challenging conditions for RVers. Major highways potentially affected include I-84, I-90.

— Monday, October 12 through Tuesday, October 13: Much of Montana and Wyoming, western North Dakota, and far northwestern South Dakota: Frost or freeze concerns may create challenging conditions for RVers. Major highways potentially affected include I-25, I-90, I-94.

— Tuesday, October 13: Southwestern Kansas, northwestern Oklahoma, and northern Texas: Severe weather may create rapidly changing and hazardous travel conditions. Major highways potentially affected include I-40.

— Wednesday, October 14: Eastern Kansas and western Missouri: Severe weather may create rapidly changing and hazardous travel conditions. Major highways potentially affected include I-29, I-35, I-70.

— Thursday, October 15 through Friday, October 16: Southeastern Montana, northeastern Wyoming, much of South Dakota, and northwestern Nebraska: Strong winds may create hazardous crosswinds for high-profile vehicles. Major highways potentially affected include I-90.

— Friday, October 16: Eastern Wyoming and much of South Dakota, with small portions of southeastern Montana, northeastern Colorado, and northwestern Nebraska: Frost or freeze concerns may create challenging conditions for RVers. Major highways potentially affected include I-25, I-80, I-90.

Extended Outlook Sunday, October 18 through Monday, October 19:

— Sunday, October 18 through Monday, October 19: From northeastern Ohio and the central Appalachians through the northern Mid-Atlantic and Northeast: Much below-normal temperatures may develop, creating cold-weather travel concerns for RVers. Major highways potentially affected include I-64, I-70, I-71, I-76, I-79, I-80, I-81, I-84, I-87, I-90, I-91, I-95.

Forecast Confidence for the Extended Outlook:

Confidence is generally good early but decreases toward the end of the first period as the evolution of the western system becomes more uncertain. Confidence is above average for the extended period because of good large-scale agreement, though precipitation details remain less certain.

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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:

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Phone numbers and websites for road conditions in all 50 states. Courtesy of the Cheyenne WY Weather Forecast Office

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