Planning to travel this week? Here’s what could impact your route.
- Heavy rain and strong winds across the Northeast today, while 1–3 feet of coastal flooding closes roads from New York and New Jersey into Virginia and the North Carolina Outer Banks.
- A major flash-flood episode spreads across the Southwest into far-west Texas Monday and Tuesday, with numerous floods possible.
- Heavy rain and flood concerns spread from Texas into the central Plains and Iowa Tuesday and Wednesday.
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Significant travel weather for the next 2-3 days.
Weather Impacts Pacific:
— Southern Nevada: A flash-flood threat Monday, as tropical moisture spreads into the region. Routes potentially affected: I-11, I-15, I-40, US-93, US-95.
— Coastal California, including the Catalina and Santa Barbara Islands, Ventura and Los Angeles County beaches, Malibu, Orange County and San Diego County: Coastal Flood Advisories begin Monday morning. Moderate flooding, 4- to 7-foot breaking waves, dangerous rip currents and beach erosion are expected from the islands through Los Angeles County until Tuesday evening; Orange and San Diego County coasts face minor flooding, 3- to 5-foot surf and local 6-foot sets through Wednesday.
Weather Impacts Mountain:
— East-central and southeastern Wyoming: An isolated severe-weather threat today includes isolated storms capable of large hail and strong wind, mainly from afternoon into evening. Routes potentially affected: I-25, I-80, I-90, US-14, US-16, US-18, US-20, US-26, US-30, US-85, US-212.
— Central and southern Utah, western and southern Colorado, Arizona, and New Mexico: A major flash-flood episode develops Monday and continues Tuesday, with the outlook reaching significant flash-flood threat within both daily footprints. Monday covers central and southern Utah, western and south-central Colorado, Arizona and most of New Mexico; Tuesday focuses on south-central and southeastern Utah, southern Colorado, central and eastern Arizona, and New Mexico, with numerous flash floods possible. Routes potentially affected: I-8, I-10, I-11, I-15, I-17, I-19, I-25, I-40, I-70.
— Southeastern Utah and west-central and southwestern Colorado, including Canyonlands, the La Sal and Abajo Mountains, Uncompahgre Plateau, San Juan Mountains and Upper Rio Grande Valley: Flood Watches begin Monday morning. Periods of heavy tropical rain may cause flash flooding on burn scars and along creeks, washes, arroyos and low-water crossings; most areas remain under the watch into Wednesday morning, while the eastern San Juan Mountains and Upper Rio Grande Valley watch ends late Tuesday night. Routes potentially affected: US-84, US-160, US-163, US-191, US-491, US-550.
— Arizona, including the northern and central plateaus and canyons, Northwest Plateau, Hualapai Mountains, southeast Arizona, and south-central valleys and mountains from Aguila to Globe and Miami: Flood Watches expand across Arizona from Sunday night through Tuesday. Heavy rain may flood burn scars, washes, low-water crossings, roads and underpasses; southeast Arizona may receive 1 to 2 inches with locally more, while south-central Arizona could see rainfall rates exceeding 1 to 2 inches per hour late Monday night and 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-160, US-163, US-180, US-191.
— New Mexico and far-west Texas, including the Rio Grande Valley, Albuquerque and Santa Fe areas, Sangre de Cristo and Sandia-Manzano Mountains, eastern plains, Bootheel, El Paso and Hudspeth County areas: Flood Watches expand across New Mexico and far-west Texas Monday and continue through late Tuesday night. Prolonged tropical rain over saturated ground may produce flash flooding in urban areas, arroyos, burn scars, rivers and streams; western and central New Mexico enter Monday morning, southern areas Monday afternoon and eastern New Mexico Monday evening. 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-180, US-285, US-380, US-491, US-550.
Weather Impacts Central:
— Northeastern and east-central North Dakota and northwestern Minnesota: A flash-flood threat Monday includes training showers and thunderstorms with widespread 1 to 2 inches and locally higher totals, creating a flash-flood threat. Routes potentially affected: I-29, I-94, US-2, US-52, US-59, US-281.
— Much of central and eastern South Dakota, much of central and southwestern Nebraska plus northwestern and central Kansas: Dense Fog Advisories continue this morning, with visibility one-quarter mile or less. Routes potentially affected: I-70, I-80, I-90, US-6, US-12, US-14, US-18, US-20, US-26, US-30, US-34, US-36, US-50, US-54, US-56, US-81, US-83, US-136, US-212, US-281, US-283, US-400.
— West-central and southwestern South Dakota and the Nebraska Panhandle: An isolated severe-weather threat today includes isolated storms capable of large hail and strong wind, with coverage potentially increasing this evening. Routes potentially affected: I-76, I-80, I-90, US-14, US-16, US-18, US-20, US-26, US-30, US-85, US-212, US-385.
— Eastern and south-central Nebraska, western and central Kansas, the Oklahoma Panhandle and western Oklahoma, central and western Texas, and western Iowa: Heavy rain and flash-flood concerns spread across the central and southern Plains Tuesday. Greatest risk of flash flooding is across the western Texas Panhandle. Routes potentially affected: I-10, I-20, I-27, I-29, I-40, I-70, I-80.
— A small portion of northeastern Illinois, including Lake County and the Des Plaines River near Gurnee and Russell: A Flood Warning continues until Monday afternoon. Minor flooding is occurring and forecast along the Des Plaines River, with the river gradually falling and expected to drop below flood stage Monday. Routes potentially affected: I-94.
Weather Impacts East:
— Eastern and northeastern Kentucky, central and western West Virginia, and a small portion of southwestern Virginia: Dense valley fog this morning is reducing visibility to one-quarter mile or less. Routes potentially affected: I-64, I-75, I-77, I-79, US-19, US-23, US-25E, US-27, US-33, US-52, US-60, US-68, US-119, US-460.
— Coastal southwestern Maine, coastal eastern New Hampshire, eastern and southern Massachusetts, and parts of Rhode Island: A Coastal Flood Warning covers eastern Massachusetts through this evening, with up to 1 foot of inundation, 6- to 15-foot surf and severe beach erosion. Coastal Flood Advisories cover southern Massachusetts, parts of Rhode Island, and coastal Maine and New Hampshire into early Monday. The coast may see 7- to 12-foot waves and beach erosion. Routes potentially affected: I-90, I-93, I-95, US-6.
— Much of Massachusetts, Rhode Island, much of Connecticut, and southeastern New York, including the Hudson Valley, New York City and Long Island: A Flood Watch covers central and eastern Massachusetts and most of Rhode Island through late Monday night, with 2 to 4 inches of rain and localized 5- to 7-inch totals possible. A flash-flood threat today extends across much of Massachusetts, Rhode Island, most of Connecticut and southeastern New York, where additional 1- to 3-inch amounts may cause urban and poor-drainage flooding. Routes potentially affected: I-78, I-80, I-84, I-87, I-90, I-91, I-93, I-95.
— Central and western Massachusetts, Connecticut, eastern and southeastern New York, New Jersey, east-central and southeastern Pennsylvania, and Delaware, including the Hudson Valley, New York City, Long Island, Atlantic and Cape May coasts, and Delaware Beaches: Numerous Wind Advisories are in effect, with gusts generally from 40 to 50 mph. Routes affected include I-76, I-78, I-80, I-84, I-86, I-87, I-90, I-91, I-95.
— Coastal Connecticut, southeastern New York, and coastal portions of eastern New Jersey, including New York City, northern Long Island, the Lower Hudson Valley and the Hudson River waterfront: Coastal Flood Warnings continue through this afternoon or early evening around western Long Island Sound, northern Long Island, New York City and adjacent eastern New Jersey, with 2 to 3 feet of inundation, flooded roads and waterfront property, and dune erosion in exposed areas. A Coastal Flood Advisory covers southern Middlesex and New London Counties in Connecticut for up to 2 feet, while minor to locally moderate tidal flooding continues along New York’s Hudson River waterfront. Routes potentially affected: I-78, I-80, I-87, I-91, I-95, US-7.
— Maryland, including Dorchester, Wicomico and Somerset Counties, the Maryland Beaches, inland Worcester County and the Anne Arundel shoreline: A Coastal Flood Warning covers Dorchester, Wicomico and Somerset Counties through this evening, with 1 to 2 feet of inundation, numerous road closures and flooding of waterfront property. Coastal Flood Advisories cover the Maryland Beaches and inland Worcester County through midday; along Anne Arundel County, an advisory for up to one-half foot this morning is followed by a Coastal Flood Watch for up to 1 foot this afternoon and evening. Routes potentially affected: I-97, US-13, US-50, US-301.
— Coastal and tidal New Jersey and Delaware, including Middlesex and western Monmouth, Atlantic, Cape May and Cumberland, the Delaware Beaches, Kent and inland Sussex: Coastal Flood Warnings continue until about 2 PM, with 1 to 2 feet of inundation causing widespread roadway flooding, impassable roads and possible structural damage. The Atlantic, Cape May and Delaware beaches also face breaking waves up to 8 feet, dangerous rip currents, significant beach erosion and possible dune breaches. Routes potentially affected: I-95, US-9, US-13, US-40, US-113, DE-1.
— Coastal and tidal Virginia, including the Eastern Shore, Virginia Beach, the Northern Neck and Middle Peninsula, Surry, James City, Newport News, Isle of Wight, Hampton Roads, York, Gloucester, Richmond and Essex Counties, and Alexandria: Coastal Flood Warnings cover the Eastern Shore, Virginia Beach, the Northern Neck and Middle Peninsula, and areas from Surry and James City through Newport News and Isle of Wight today. Inundation is generally 1 to 2 feet, with local 1- to 3-foot water depths, flooded vehicles and numerous road closures. Coastal Flood Advisories cover other Hampton Roads and tidal-river communities for up to 2 feet, while Alexandria may see up to one-half foot of innundation through Monday morning. Routes potentially affected: I-64, US-13, US-17, US-58, US-60, US-360, US-460.
— Coastal portions of eastern North Carolina, including eastern Currituck County, the Northern Outer Banks and Hatteras Island, coastal Pender, New Hanover and Brunswick Counties, and the lower Cape Fear River: A Coastal Flood Warning covers eastern Currituck County through noon for 1 to 2 feet of inundation and widespread waterfront flooding. Coastal Flood Advisories elsewhere bring 1 to 2 feet along the southern coast this morning and the Northern Outer Banks and Hatteras Island through midnight, where 6- to 8-foot surf, weakened dunes and numerous road closures are concerns; lower Cape Fear River flooding is shallower. Routes potentially affected: NC-12.
— Coastal South Carolina, coastal Georgia, and the northern Florida Peninsula, including Horry, Georgetown, Charleston, Beaufort, Jasper, Duval and the St. Johns River Basin: Coastal Flood Advisories cover the South Carolina and Georgia coasts this morning and parts of the northern Florida Peninsula into this evening. Up to 1 foot of inundation is expected around Charleston and the northeastern South Carolina coast, up to one-half foot near Beaufort and coastal Georgia, and minor flooding of roads, lots and parks around Duval County and the St. Johns River Basin; dangerous rip currents affect exposed beaches.
— Southern Florida, including the Upper Florida Keys: A Coastal Flood Warning continues through 5 PM for major saltwater flooding in the Upper Florida Keys. Numerous roads may close, and low-lying homes, businesses and critical infrastructure may be inundated. Routes potentially affected: US-1.
— Southeastern Florida, including coastal Palm Beach and Broward Counties: A Coastal Flood Advisory continues through Monday afternoon for moderate coastal flooding of roads, lots and parks, with isolated road closures and dangerous rip currents.
Tropical Weather Outlook for the next 7 days:
— Eastern Pacific west and southwest of Baja California: Category 3 Hurricane Polo, 300 miles southwest of Cabo San Lucas, has 120 mph winds and is forecast to approach Baja California Sur Monday, bringing 4 to 8 inches of rain with local totals to 10 inches, flooding and mudslides. Hurricane Odalys, 850 miles west of southern Baja California, is rapidly weakening from 75 mph and should become post-tropical Monday; moisture from both systems may feed Southwest U.S. heavy rain.
— Central Atlantic west-southwest of the Azores: Tropical Depression Fay has 35 mph winds 1,150 miles west-southwest of the Azores and should over the open Atlantic and pose no threat to land before becoming a remnant low.
Extended Hazard Outlook
Outlook Tuesday, September 29th through Saturday, October 3rd:
— Tuesday, September 29 through Wednesday, September 30: Southwest through the central Plains and Iowa: Heavy rain may create localized flooding and reduced visibility Tuesday across southeastern Arizona, New Mexico, and much of Texas, and through Wednesday from southeastern Colorado and northeastern New Mexico across the central Plains into Iowa. Major highways potentially affected include I-10, I-20, I-25, I-29, I-35, I-40, I-70, I-80.
— Wednesday, September 30 through Friday, October 2: Southern Plains through the mid-Mississippi and lower Ohio valleys: Heavy rain may create localized flooding and reduced visibility across Texas, Oklahoma, southwestern Arkansas, and northwestern Louisiana, with the concern broadening Thursday and Friday from southeastern Kansas and northeastern Oklahoma across the mid-Mississippi and lower Ohio valleys. Major highways potentially affected include I-10, I-20, I-29, I-30, I-35, I-40, I-55, I-64, I-70, I-74, I-80.
— Saturday, October 3: Lower Mississippi and Tennessee valleys into Kentucky and the southern Appalachians: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-10, I-20, I-40, I-55, I-65, I-75, I-85.
Extended Outlook Sunday, October 4th through Saturday, October 10th:
— Sunday, October 4 through Saturday, October 10: Southeastern Texas and the Lower Mississippi Valley through the Southeast, Mid-Atlantic, and Northeast: Heavy precipitation may develop Sunday through Tuesday, creating localized flooding and difficult travel. Across most of Florida, the potential could continue through Saturday. 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.
— Sunday, October 4 through Wednesday, October 7: Great Lakes through New York and northern New England: Much below-normal temperatures may develop, creating cold-weather travel concerns for issues for exposed plumbing. Major highways potentially affected include I-71, I-75, I-79, I-80, I-81, I-87, I-90, I-91, I-94, I-95.
Confidence in the Extended Outlook:
Confidence is generally good for the large-scale pattern, while local hazard details remain less certain. Transitional-pattern uncertainty is greater around the start of the extended period, with confidence improving later as model consensus strengthens.
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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