Travel Weather Alerts: Route Impacts This Week Ahead

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

Severe storms threaten the I-95 corridor and Appalachians today, with damaging winds possible from New England to the Carolinas.
Central U.S. storm and flood threat builds today into Saturday, with eastern Kansas and Missouri at highest risk.
Major heat impacts continue on both coasts, with dangerous heat along the Eastern Seaboard today and extreme heat expanding into Portland and the Pacific Northwest Sunday.

Your route’s weather may vary from the general forecast — check your exact trip

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Significant travel weather for the next 2-3 days.

NEW: Extended forecast for the next 2 weeks now included!

Weather Impacts Pacific

— Much of Western Washington, including the foothills, valleys, lowlands, Olympic Peninsula foothills, Hood Canal, Seattle, Everett, Pierce and southern King County areas: Heat Advisory beginning Sunday morning through Tuesday morning, with highs generally 85 to 95 and warm overnight lows near 60 to 65; heat may increase stress for travelers without cooling.

— Much of northwest and west-central Oregon, including the Coastal Range, South Willamette Valley, Columbia Gorge, Hood River Valley, southwest Washington lowlands and foothills: Heat Advisory beginning Sunday morning through Tuesday night, with temperatures between 92 and 98 and limited overnight relief; hot conditions may cause heat illness.

— Northwest Oregon and southwest Washington, including the Portland metro region, western Columbia River Gorge, Inner Vancouver metro region, and East Clark County Lowlands: Extreme Heat Warning beginning Sunday morning through Tuesday night, with temperatures between 95 and 100 and elevated overnight lows of 63 to 67 reducing overnight relief; dangerous prolonged heat exposure is expected.

— Southwest coastal Oregon: Heat Advisory beginning around midday through Saturday evening, with highs of 85 to 95 and nighttime lows of 60 to 70; hot conditions may cause heat-related illness.

— Northern California Interior Mendocino, Lake County, East Bay, and Santa Clara Valley areas: Heat Advisory through this evening, with valley temperatures 96 to 105 in Lake County and interior Mendocino, and 90 to 95 with some readings above 100 in the East Bay and Santa Clara Valley; heat-sensitive travelers should plan stops and cooling carefully.

— Northern and central California valleys and foothills, including the San Joaquin Valley: Heat Advisory through Saturday night, with temperatures commonly in the upper 90s to near 105, including 100 to 105 in the northern and central Sacramento Valley and up to 103 in parts of central California; hot conditions may cause heat illness, especially for travelers without reliable cooling or hydration.

— San Francisco Bay shoreline: Coastal Flood Advisory through Wednesday morning, with up to 2 feet of inundation above ground level possible in low-lying areas near shorelines and tidal waterways; flooding of lots, parks, and roads with isolated road closures is possible.

Weather Impacts Mountain:

— Southeast Wyoming and the Nebraska Panhandle: Red Flag Warning through late evening, with west winds 15 to 25 mph and gusts up to 35 mph. I-25, I-80, US-18, US-20, US-26, US-30, US-85, US-385 impacted.

— Much of western Colorado and adjacent northwest Utah: Red Flag Warnings beginning late this morning through late evening, with west winds gusts up to 25-45 mph. I-70, US-24, US-40, US-50, US-84, US-160, US-191, US-285, US-491, US-550 impacted.

— Southeastern Colorado and central and eastern New Mexico: Scattered severe thunderstorms are possible today afternoon into evening, with damaging wind, large hail, and some tornado potential locally supported. The greatest risk of severe weather will be across northeastern New Mexico. I-25, I-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 potentially impacted.

— Northeast and east-central New Mexico: A few severe thunderstorms are possible Saturday afternoon into Saturday night, mainly with isolated damaging wind or hail. I-40, US-54, US-56, US-60, US-64, US-70, US-84, US-87, US-285, US-380, US-412 potentially impacted.

Weather Impacts Central:

— Southern Wisconsin, much of Iowa, Illinois, Missouri, northern Arkansas, southeastern Nebraska, much of Kansas, western Kentucky and ,Tennessee, Oklahoma along and north of I-40, Texas Panhandle: More organized severe thunderstorms are possible Saturday afternoon into Saturday night, with strong damaging wind gusts and large to very large hail possible in the afternoon from Kansas into Iowa. The greatest risk of severe weather will be across eastern Kansas and central Missouri. I-24, I-27, I-29, I-35, I-39, I-40, I-41, I-43, I-44, I-49, I-55, I-57, I-64, I-69, I-70, I-72, I-74, I-80, I-88, I-90, I-94 potentially impacted.

— Nebraska Panhandle: Red Flag Warning beginning late this morning through early evening, with southwest winds 20 to 30 mph, gusts up to 45 mph. I-76, I-80, US-20, US-26, US-30, US-385 impacted.

— Northern Illinois and northwest Indiana: Flood Warnings and Flood Advisories continue through Saturday morning, with 2 to 3 inches of rain already fallen in parts of north-central and northeast Illinois, minor river flooding forecast, poor-drainage flooding, and some roads and streets flooded. Highways near I-39, I-65, I-80, I-90, I-94, US-30 may be impacted.

— South-central Iowa and northern and northwest Missouri: Flood Warnings through Sunday, where 3-7 inches of rain have already fallen. Major river flooding along the Little Osage, 102, Tarkio, Grand, Thompson, Platte, and Chariton rivers; some low-lying roads, farm fields, and secondary roads may flood. Numerous roads are closed. Highways near I-29, I-35, I-49, US-34, US-36, US-63, US-65 are likely impacted.

— Southeast Missouri and western Kentucky: This morning, a line of thunderstorms are producing wind gusts of 40 to 50 mph, torrential downpours, and frequent lightning. I-24, I-55, I-57, I-69, US-60, US-67, US-68 impacted.

— Southwestern Kansas, western and north-central Oklahoma, and the Texas Panhandle: Scattered severe thunderstorms are possible this afternoon into evening, with damaging wind, large hail, and chance for a tornado or two. The greatest risk of severe weather will be across the Texas and Oklahoma Panhandles. I-10, I-20, I-27, I-35, I-40, US-50, US-54, US-56, US-60, US-62, US-64, US-67, US-70, US-83, US-84, US-87, US-90, US-160, US-180, US-183, US-283, US-285, US-287, US-385, US-400, US-412 potentially impacted.

— Northeastern Oklahoma through eastern Kansas, Missouri, northern Arkansas, much of Illinois, and western Tennessee and Kentucky: Flash flooding is possible Saturday into Saturday night. Greatest risk for flash flooding will be along the Kansas/Missouri border. I-24, I-29, I-35, I-39, I-40, I-44, I-49, I-55, I-57, I-64, I-69, I-70, I-72, I-74 potentially impacted.

— Northern Texas and adjacent southern Oklahoma, and southern Arkansas: Isolated severe thunderstorms are possible Sunday afternoon into Sunday night as a cold front settles south. I-20, I-27, I-30, I-35, I-44, I-45, I-49 potentially impacted.

— Eastern Texas, southern Arkansas, western, central and northern Louisiana, and west-central Mississippi: Flash flooding is possible Sunday into Sunday night. I-10, I-14, I-20, I-30, I-35, I-45, I-49, I-55, I-69 potentially impacted.

— Central and eastern Tennessee and northern Alabama: Scattered severe thunderstorms are possible today afternoon into evening, with damaging wind gusts the primary hazard. I-24, I-40, I-59, I-65, I-75, US-27, US-43, US-64, US-70, US-72, US-76, US-127, US-231, US-278, US-431 potentially impacted.

— Northeast Louisiana, and parts of western and south-central Mississippi: Heat Advisory beginning around midday through Saturday evening, with heat index values around 105.

Weather Impacts Eastern:

— Down-East Maine: Dense Fog Advisory through morning, with visibility of a quarter-mile or less; low visibility could make driving hazardous. US-1 impacted.

— Parts of central and northern New Hampshire: Flood Advisories this morning. Between 0.5 and 1.5 inches of rain have fallen. – Additional rainfall amounts of 0.5 to 1 inch are expected over the area, which will result in minor flooding. Highways near I-89, I-91, I-93, US-4 may be impacted.

— Much of the greater I-95 corridor from South Carolina to southern Maine: Heat Advisories through late evening, with heat index values generally 95 to 109 deg F; the highest values will reach 109 deg F in parts of North Carolina and up to 104 deg F in parts of Pennsylvania, New Jersey, and Delaware.

— Vermont, New Hampshire, much of New York, much of Massachusetts, Connecticut, much of Pennsylvania, New Jersey, Delaware, Maryland, District of Columbia, West Virginia, Virginia, eastern Kentucky, North Carolina, eastern Tennessee, northern South Carolina, and northern Georgia: More organized severe thunderstorms are possible this afternoon into evening, mainly with damaging winds. I-20, I-24, I-26, I-40, I-59, I-64, I-66, I-68, I-70, 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-95, I-97, I-99 potentially impacted.

— Much of Michigan Lower Peninsula, and northern, central and western Indiana: Scattered severe thunderstorms are possible Saturday afternoon into Saturday night, with damaging wind and hail as the primary hazards. I-57, I-64, I-65, I-69, I-70, I-74, I-75, I-80, I-90, I-94, I-96 potentially impacted.

— Southeastern New York, most of Pennsylvania, New Jersey, Delaware, Maryland, District of Columbia, central and northern West Virginia, much of Virginia, and northeastern North Carolina: Scattered severe thunderstorms are possible Sunday afternoon into Sunday evening. The greatest risk of severe weather will be across central and southeastern Pennsylvania, southern New Jersey, Delaware, central and eastern Maryland, District of Columbia, and northern, central and eastern Virginia. I-64, I-66, I-68, I-70, I-76, I-78, I-79, I-80, I-81, I-83, I-84, I-85, I-86, I-87, I-88, I-95, I-97, I-99 potentially impacted.

Outlook Sunday June 14th through Thursday June 18th:

— Sunday, June 14 through Wednesday, June 17: portions of southeastern California, small portions of southeastern Nevada, and portions of western Arizona: Heat concerns may create challenging conditions. Major highways potentially affected include I-8, I-10, I-15, I-40.

— Sunday, June 14 through Tuesday, June 16: from southeastern Oklahoma and eastern Texas through the Lower Mississippi Valley and portions of the Southeast: Heavy rain may create localized flooding and reduced visibility. Major highways potentially affected include I-10, I-20, I-30, I-55, I-65, I-75, I-85.

— Sunday, June 14 through Monday, June 15: much of Florida and Georgia into most of South Carolina and much of North Carolina: Heat concerns may create challenging conditions. Major highways potentially affected include I-10, I-20, I-40, I-74, I-75, I-95.

— Monday, June 15: small portions of western Washington: Heat concerns may create challenging conditions. Major highways potentially affected include I-5, I-90.

— Thursday, June 18: portions of southern Oklahoma, much of northeastern Texas, small portions of southwestern Arkansas, and much of Louisiana: Heat concerns may create challenging conditions. Major highways potentially affected include I-20, I-30, I-35.

Extended Outlook June 19th through 25th:

— Friday, June 19 through Sunday, June 21: portions of southwestern Oregon and small portions of northwestern California: Strong winds may develop, which could create hazardous crosswinds for high-profile vehicles. Major highways potentially affected include US-101, CA-1.

— Friday, June 19 through Sunday, June 21: portions of the interior West, central Rockies, central Plains, and Texas: Strong winds may develop, which could create hazardous crosswinds for high-profile vehicles, especially over higher terrain including San Gorgonio Pass, Parleys Summit, Emigrant Pass, and Eisenhower Tunnel. Major highways potentially affected include I-10, I-15, I-20, I-25, I-40, I-70, I-76, I-80, I-84.

— Friday, June 19 through Tuesday, June 23: from the central Plains and Upper Midwest into the Ohio Valley and central Appalachians: Heavy rain may develop, which could create localized flooding and reduced visibility. Major highways potentially affected include I-29, I-35, I-40, I-55, I-64, I-65, I-70, I-71, I-74, I-75, I-76, I-79, I-80, I-81, I-90, I-94.

— Friday, June 19 through Monday, June 22: from northeastern Florida through the Southeast and Mid-Atlantic: Hazardous heat may develop, which could create challenging conditions. Major highways potentially affected include I-20, I-40, I-64, I-70, I-74, I-81, I-85, I-87, I-95.

— Friday, June 19 through Thursday, June 25: most of the Florida Peninsula: Extreme heat is likely, which may create challenging conditions. Major highways potentially affected include I-4, I-75, I-95.

— Friday, June 19 through Saturday, June 20: from the central Appalachians and northern Mid-Atlantic into the Northeast and all of New England: Strong winds may develop, which could create hazardous crosswinds for high-profile vehicles. Major highways potentially affected include I-70, I-76, I-79, I-80, I-81, I-84, I-87, I-90, I-91, I-95.

— Saturday, June 20 through Thursday, June 25: from the central and southern Plains into portions of the lower Missouri Valley and western Arkansas: Hazardous heat may develop, which could create challenging conditions. Major highways potentially affected include I-10, I-20, I-29, I-30, I-35, I-40, I-70.

Forecast Confidence for the Extended Outlook:

Confidence is generally above average for the earlier period, with good agreement on the large-scale pattern. Confidence decreases later in the outlook to below average because of a more transitional pattern and greater uncertainty in the details.

Looking for real-time road conditions? Here’s a link, courtesy of the Federal Highway Administration, to all the individual State 511 websites.

Your route’s weather may vary from the general forecast — check your exact trip

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