Planning to travel this week? Here’s what could impact your route.
- Flooding and severe storms threaten parts of the Four Corners—especially New Mexico—today, with road washouts, river flooding, flash floods, hail over 2 inches and a tornado or two; flood and severe-storm risks persist this weekend.
- Winds gusting to 65 mph threaten northern and central Montana today, while mountain snows and blowing snow may bring slick roads and poor visibility this afternoon into early Saturday.
- Coastal flooding affects parts of the Mid-Atlantic and Southeast today into the weekend: Hatteras Island may see up to 2 feet and ocean overwash, while significant ocean-flooding is possible in southeastern Georgia and northeastern Florida late tonight through Monday.
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Significant travel weather for the next 2-3 days.
Weather Impacts Pacific:
— Portions of eastern Washington and north-central Oregon, including the eastern Columbia River Gorge, Kittitas Valley, Upper Columbia Basin, Okanogan Valley, Waterville Plateau, and Okanogan Highlands: Wind Advisories continue today. Gusts reach 50 to 55 mph through late morning in the Gorge, Kittitas Valley, and north-central Oregon, while 45 mph gusts continue into the afternoon farther north with patchy blowing dust and strong crosswinds possible. Routes potentially affected: I-82, I-84, I-90, US-2, US-26, US-97, US-395.
— Portions of eastern Washington and northeastern and north-central Oregon, including the eastern Columbia River Gorge, Yakima Valley, Lower Columbia Basin, and Blue Mountain foothills: Freeze Watches are in effect tonight through Saturday morning. Temperatures of 25 to 32 degrees are possible, with the coldest readings in the Lower Columbia Basin, Yakima Valley, and Blue Mountain foothills.
— A small portion of far northern California and a portion of California’s North Coast: A Freeze Watch is in effect late tonight through Saturday morning, with temperatures as low as 25 degrees possible.
Weather Impacts Mountain:
— Northwestern, north-central, and central Montana: High Wind Warnings are in effect today. Northwest winds of 35 to 45 mph with gusts to 65 mph affect northwestern and north-central Montana through midafternoon; central Montana can expect 30 to 40 mph winds with 60 mph gusts into this evening, with downed trees, power lines, and widespread outages possible. Routes potentially affected: I-15, US-2, US-87, US-191.
— Parts of central, western, and southern Montana, including MacDonald and Homestake passes and the Big Belt, Bridger, Castle, Ruby, Beaverhead, Little Belt, Highwood, Bears Paw, Snowy, and Judith mountains: Winter Weather Advisories are in effect this afternoon into early Saturday. Most mountain areas receive 2 to 6 inches of snow, while lower central Montana and Judith Gap receive 1 to 3 inches; gusts of 45 to 55 mph may produce blowing snow, poor visibility, slick roads, and scattered tree or power-line damage. Routes potentially affected: I-15, I-90, US-12, US-87, US-89, US-191, US-287.
— Southeastern Montana, northeast Wyoming, and northwestern and west-central South Dakota: Red Flag Warnings are in effect today. Humidity of 14 to 20 percent and gusts of 40 to 55 mph will support rapid or erratic fire spread, with a late-day cold front shifting winds. Routes potentially affected: I-25, I-90, I-94, US-12, US-14, US-16, US-18, US-20, US-85, US-212.
— Portions of southern Idaho, including the Boise Mountains, Wood River foothills, and Upper Snake River Plain: Flash Flood Watches continue today over recent burn scars. Up to 1 inch of rain may trigger flash flooding and debris flows over the Crooked and Wapiti scars through midday, while the Big Rock and Ohio scars remain at risk through this afternoon. Routes potentially affected: I-15, US-20, US-26, US-93.
— Parts of southeastern and south-central Wyoming, including the Snowy Range foothills, Shirley Basin, and Ferris, Seminoe, and Shirley mountains: A High Wind Warning is in effect through midafternoon. Southwest winds of 30 to 40 mph with gusts to 60 mph will produce strong crosswinds. Routes potentially affected: I-80, US-30, US-287.
— South-central and southeastern Utah and southwestern and south-central Colorado, including Glen Canyon, the San Juan Mountains, and the upper Rio Grande Valley: Flood Warnings continue this morning after 1 to 4 inches of rain, with flooded structures, road closures and washouts, inundated low-water crossings, and high rivers. Major flooding is occurring on the San Juan River at Pagosa Springs, while minor flooding near Del Norte may persist into Sunday; Flood Watches continue through this afternoon or evening across the broader region. Routes potentially affected: I-70, US-6, US-50, US-84, US-89, US-160, US-163, US-191, US-491, US-550.
— Southeastern and south-central Colorado and much of New Mexico: Severe thunderstorms are possible across the region today into tonight. Large hail is the primary threat, including some hail over 2 inches in New Mexico; damaging gusts and a tornado or two are also possible, with southern Colorado mainly seeing hail and isolated strong gusts. Routes potentially affected: I-10, I-25, I-40, US-40, US-50, US-54, US-56, US-60, US-62, US-64, US-70, US-82, US-84, US-85, US-87, US-160, US-180, US-285, US-287, US-380, US-385, US-400, US-412, US-550.
— Central and eastern New Mexico and southeastern, east-central, and south-central Colorado: A flash-flood threat is centered on central and south-central New Mexico today. Saturday the flash-flood threat shifts across central and eastern New Mexico and southeastern Colorado; Sunday it focuses on northeastern and east-central New Mexico and portions of southeastern Colorado. Routes potentially affected: I-10, I-25, I-40, I-70, US-24, US-40, US-50, US-54, US-56, US-60, US-62, US-64, US-70, US-82, US-84, US-85, US-87, US-160, US-180, US-285, US-287, US-380, US-385, US-400, US-412, US-550.
— Small portions of northeastern and east-central Arizona, including Chinle and the Little Colorado River: Flood Warnings are in effect. Flooding of creeks and dry washes near Chinle continues this morning, while the Little Colorado River from Woodruff to Leupp is rising through early Saturday with dangerous flooding at low-water crossings. Routes potentially affected: I-40, US-180, US-191.
— Western and northern New Mexico, including the Jemez and Chuska mountains, Gila region, and Northwest Plateau: A Flood Watches, Advisories, and Warnings continue early today where 1 to 4 inches of rain produced high flows, standing water, and lowland flooding. Flood Watches remain in effect across western and northern New Mexico, with another inch possible on saturated ground and rainfall rates of 1 to 2 inches per hour during renewed storms this afternoon. Routes potentially affected: I-10, I-25, I-40, US-60, US-64, US-70, US-84, US-285, US-491, US-550.
— Much of New Mexico: Saturday brings a severe-thunderstorm risk across much of New Mexico. While large hail is the main threat, strong gusts and a tornado are also possible. On Sunday, isolated strong to severe thunderstorms mainly threaten southern, central, and east-central New Mexico with hail. Routes potentially affected: I-10, I-25, I-40, US-54, US-60, US-62, US-64, US-70, US-82, US-84, US-160, US-180, US-285, US-380, US-491, US-550.
Weather Impacts Central:
— A portion of southwestern North Dakota: A Red Flag Warning is in effect from midday through this evening. South winds may gust to 40 mph as humidity falls to 15 to 25 percent, supporting rapid fire spread. Routes potentially affected: US-12, US-85.
— Far-West Texas, western Kansas, the Oklahoma Panhandle, and the western and northeastern Texas Panhandle and a small portion of Northwest Texas: Flash flooding is possible across a portion of Far-West Texas today, then a portion of western Kansas on Saturday. On Sunday the flash-flood threat expands across western Kansas, the Oklahoma Panhandle, and the western and northeastern Texas Panhandle and a small portion of Northwest Texas. Routes potentially affected: I-10, I-27, I-40, I-70, US-24, US-36, US-40, US-50, US-54, US-56, US-60, US-62, US-64, US-70, US-82, US-83, US-84, US-87, US-160, US-180, US-283, US-287, US-380, US-385, US-400, US-412.
— Far-West Texas and a portion of the Big Bend: Saturday brings a severe-weather threat, with large hail the main threat and strong gusts or a tornado also possible. On Sunday isolated strong to severe thunderstorms mainly producing hail are possible across far-West Texas and a small portion of the Big Bend. Routes potentially affected: I-10, I-20, US-54, US-60, US-62, US-67, US-70, US-82, US-84, US-90, US-180, US-285, US-380.
— A portion of the Minnesota Arrowhead, northern and eastern Wisconsin, and a small portion of northeastern Illinois: Dense Fog Advisories continue through mid-morning. Visibility is one-quarter mile or less, with the most persistent fog near Lake Superior, the St. Louis River valley, and across eastern Wisconsin into northeastern Illinois. Routes potentially affected: I-35, I-41, I-43, I-94, US-2, US-8, US-10, US-18, US-41, US-45, US-53, US-141, US-169, MN-61.
Weather Impacts East:
— Michigan: Dense Fog Advisories cover much of Michigan this morning. Visibility is one-quarter mile or less through mid-morning across the Upper Peninsula and central and southern Lower Peninsula, lingering until noon across northern Lower Michigan and part of the eastern Upper Peninsula. Routes potentially affected: I-69, I-75, I-94, I-96, US-2, US-10, US-23, US-31, US-41, US-127, US-131.
— Northern and central New Jersey and southeastern and east-central Pennsylvania: Freeze Watches are in effect late tonight through Saturday morning. Temperatures as low as 30 degrees are possible, with frost and freeze conditions affecting exposed plumbing.
— Central and southern New Jersey, southern Delaware, Maryland’s Eastern Shore and a small portion of central Maryland, and Virginia’s Northern Neck, Tidewater, Central Virginia, and a small portion of Northern Virginia: Coastal Flood Advisories are in effect today into early Saturday. Up to one-half foot of tidal inundation affects New Jersey, Delaware, central Maryland, and Northern Virginia, while up to one foot is expected along Maryland’s Eastern Shore and much of tidal Virginia, flooding vulnerable roads and low waterfront property.
— Small portions of eastern North Carolina, the North Carolina Outer Banks, and Lowcountry South Carolina: Coastal Flood Advisories are in effect today. Up to one-half foot of tidal flooding affects the lower Cape Fear River and Lowcountry South Carolina this morning, while Hatteras Island may see up to 2 feet of inundation and additional ocean overwash through this evening.
— A small portion of southeastern Georgia and a small portion of northeastern Florida: Coastal Flood Advisories continue across northeastern Florida through 2 AM Saturday, with minor flooding, shoreline erosion, and some road closures possible. Coastal Flood Watches cover southeastern Georgia and northeastern Florida from late tonight through Monday evening for possible significant flooding of roads, homes, businesses, and infrastructure. Routes potentially affected: I-95, US-1, US-17, US-25.
— Small portions of east-central and southeastern Florida: Coastal Flood Advisories cover southeastern Florida through Saturday evening and east-central Florida from early Saturday into Sunday, with moderate or minor flooding, rough surf, beach erosion, and isolated road closures. Coastal Flood Watches follow Sunday, while a flash-flood threat focuses on a small portion of southeastern Florida Sunday. Routes potentially affected: I-75, I-95, US-1, US-27, US-41, US-98, FL-A1A.
— A small portion of southern Florida, including the Upper and Middle Florida Keys: A Coastal Flood Advisory continues through early Saturday. Saltwater flooding is expected on low-elevation streets and lots, with overflowing storm drains and overtopped seawalls and docks.
Tropical Weather Outlook for the next 7 days:
— Eastern Pacific, 450 miles south-southwest of Acapulco, Mexico: Hurricane Vance has 85 mph winds and is moving north-northwest at 6 mph. Rapid intensification is forecast to make Vance a major hurricane tonight; swells reaching southern and southwestern Mexico this weekend will produce life-threatening surf and rip currents.
Extended Hazard Outlook
Outlook Sunday, October 25th through Thursday, October 29th:
— Sunday, October 25: From southeastern Colorado and eastern New Mexico across Kansas and adjoining parts of southern Nebraska, northwestern Oklahoma, and northern Texas: Heavy rain may create localized flooding and difficult travel. Major highways potentially affected include I-40, I-70, I-80.
— Sunday, October 25: Southeastern Florida: Heavy rain may create localized flooding and difficult travel. Major highways potentially affected include I-75, I-95.
Extended Outlook Friday, October 30th through Thursday, November 5th:
— Friday, October 30 through Monday, November 2: From the central and southern Plains through the Mississippi, Tennessee, and lower Ohio valleys to the central Gulf Coast and northwestern Florida: Heavy precipitation may develop, creating localized flooding and difficult travel. It is more likely Friday, October 30 through Sunday, November 1 across most of Oklahoma, much of Texas, southwestern Missouri, most of Arkansas and Louisiana, and small parts of southeastern Kansas and southwestern Mississippi. Major highways potentially affected include I-10, I-20, I-30, I-35, I-40, I-55, I-64, I-65, I-70.
— Friday, October 30 through Sunday, November 1: Most of Florida and the Carolinas, much of Georgia, and southeastern Virginia: Strong winds may create hazardous crosswinds for high-profile vehicles. Major highways potentially affected include I-4, I-10, I-20, I-40, I-74, I-75, I-85, I-87, I-95.
— Saturday, October 31 through Thursday, November 5: Most of California and small parts of southwestern Oregon and northwestern Nevada: Heavy precipitation may create localized flooding and difficult travel. Heavy snow is possible in portions of northwestern California and small parts of northwestern Nevada, creating difficult travel over higher terrain. Major highways potentially affected include I-5, I-80.
— Saturday, October 31 through Tuesday, November 3: Small parts of southwestern Oregon and portions of northwestern California: Strong winds may create hazardous crosswinds for high-profile vehicles.
— Saturday, October 31 through Monday, November 2: Southern California, much of Arizona, most of New Mexico, and small parts of southern Utah, southwestern Colorado, and western Texas: Heavy precipitation may develop, creating localized flooding and difficult travel. It is more likely Sunday, November 1 through Monday, November 2 across much of Arizona and small parts of southwestern New Mexico. Major highways potentially affected include I-5, I-8, I-10, I-15, I-25, I-40.
— Sunday, November 1 through Tuesday, November 3: The central Rockies from southeastern Idaho and eastern Utah through Wyoming and Colorado, with small extensions into southern Montana and northern New Mexico: Heavy snow is possible and may create difficult travel over higher terrain and mountain passes. Major highways potentially affected include I-70, I-80, I-84.
— Tuesday, November 3 through Thursday, November 5: Much of Washington and portions of western Oregon: Heavy precipitation may create localized flooding and difficult travel across much of Washington and northwestern Oregon. Heavy snow is possible across much of Washington and portions of western Oregon, creating difficult travel over higher terrain and mountain passes. Major highways potentially affected include I-5, I-84, I-90.
Confidence in the Extended Outlook:
Confidence in the earlier period’s details is limited despite reasonable initial agreement, as forecast differences emerge quickly. Confidence is about average later, with general agreement on the large-scale pattern offset by increasing uncertainty as the pattern evolves.
Looking for real-time road conditions? Here’s a link, courtesy of the Federal Highway Administration, to all the individual State 511 websites.
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Weather Maps and National Outlooks
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