National Weather Service United States Department of Commerce

Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

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Southern Florida NE Gulf N of 25N E of 87W Gulf from 22N to 25N E of 87W including Straits of Florida NW Gulf including Stetson Bank N Central Gulf including Flower Garden Banks Marine Sanctuary W Central Gulf from 22N to 26N W of 94W Central Gulf from 22N to 26N between 87W and 94W Atlantic from 27N to 31N W of 77W Atlantic from 27N to 31N between 70W and 77W Atlantic from 27N to 31N between 65W and 70W Bahamas N of 22N including the Cay Sal Bank Atlantic from 22N to 27N E of Bahamas to 70W Tropical N Atlantic from 15N to 19N between 55W and 60W Caribbean N of 18N between 76W and 85W including the Cayman Basin Caribbean N of 18N between 76W and 85W including the Cayman Basin Caribbean approaches to the Windward Passage Atlantic S of 22N W of 70W including approaches to the Windward Passage Newport/Morehead City, NC Brownsville, TX Corpus Christi, TX Houston/Galveston, TX New Orleans, LA Lake Charles, LA Mobile, AL Tallahassee, FL Tampa, FL Miami, FL Key West, FL Florida Keys Miami, FL Melbourne, FL Jacksonville, FL Charleston, SC Wilmington, NC Baltimore/Washington, DC Wakefield, VA Philadelphia/Mt. Holly, PA/NJ New York, NY Boston, MA Gray/Portland, ME Intra Coastal Waters from Schoodic Point ME to Stonington ME Coastal Waters from Schoodic Point ME to Stonington ME out 25 NM Waters from Eastport ME to Stonington ME from 25 to 40 NM Northeast Minnesota and Northern Wisconsin Northern Michigan Northern Michigan Northern Michigan East Central Wisconsin - Green Bay East Central Wisconsin - Green Bay Southern and Southeastern Wisconsin Northeastern Illinois and Northwestern Indiana - Chicago Northern Indiana and Northwestern Ohio Southwestern Michigan Northeast Michigan - Gaylord Northeast Michigan - Gaylord Northeast Michigan - Gaylord Southeastern Michigan - Detroit Southeastern Michigan - Detroit Southeastern Michigan - Detroit Northern Ohio Western New York - Buffalo Western New York - Buffalo Northern Michigan Los Angeles, CA San Diego, CA San Francisco Bay Area/Monterey, CA Eureka, CA Medford, OR Portland, OR Seattle, WA Los Angeles Area Los Angeles Area Los Angeles Area Los Angeles Area Los Angeles Area Los Angeles Area South Central California San Francisco Area Western Nevada North Central California Northwest California Coast Southwest Oregon and Northern California Northeast Oregon and Southeast Washington Northwest Oregon Northwest Washington Eastern Washington and Northern Idaho Southern Nevada, Southeastern California and Northwestern Arizona - 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Dodge City Central Oklahoma Eastern Oklahoma and Northwestern Arkansas Dallas and Fort Worth Central Texas - San Angelo Austin and San Antonio Texas Corpus Christi, Victoria, and Laredo Texas Southern Texas Texas - Houston/Galveston Southeast Texas and Southwest Louisiana Northern Louisiana and Eastern Texas - Shreveport Arkansas Southwestern Missouri Northwestern Missouri Central Iowa Southern Minnesota Northeastern North Dakota and Northwestern Minnesota Northeast Minnesota and Northern Wisconsin Southwestern Wisconsin, Southeastern Minnesota, and Northeast Iowa Eastern Iowa and Northwestern Illinois - Quad Cities Eastern Missouri - West Central Illinois Western Tennessee, Eastern Arkansas and Northern Mississippi - Memphis Central Mississippi Southeastern Louisiana Middle Tennessee Northern Alabama Central Alabama Mobile - Pensacola West Central Florida East Central Florida Panhandle of Florida and Southwestern Georgia Northeast Florida and Southeast Georgia Northern and Central Georgia Low Country of South Carolina and Georgia Northeastern South Carolina and Southeastern North Carolina - 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Buffalo Eastern New York and Western New England Areas Boston and Surrounding Areas Northern Vermont and New York Southern Maine and New Hampshire Northern Maine Gulf of Maine to the Hague Line Georges Bank between Cape Cod and 68W north of 1000 fathoms South of New England between the Great South Channel and Montauk Point to 1000 fathoms South of Long Island between Montauk Point and Sandy Hook to 1000 fathoms Hudson Canyon to Baltimore Canyon to 1000 fathoms Baltimore Canyon to Cape Charles Light to 100 NM offshore Cape Charles Light to Currituck Beach Light to 100 NM offshore Currituck Beach Light to Cape Hatteras to 100 NM offshore Cape Hatteras to Cape Fear to 100 NM offshore Cape Fear to 31N to 1000 FM Georges Bank between 68W and the Hague Line East of 69W to the Hague Line between 1000 fathoms and 39N East of 69W and south of 39N to 250 NM offshore Between 1000 fathoms and 38.5N west of 69W Baltimore Canyon to 69W east of 1000 fathoms and south of 38.5N to 250 NM offshore Baltimore Canyon to Hatteras Canyon between 100 NM and 250 NM offshore Hatteras Canyon to Cape Fear 100 NM and 250 NM offshore Cape Fear to 31N east of 1000 fathoms to 250 NM offshore Cape Flattery to Cape Shoalwater between 60 NM and 150 NM offshore Cape Shoalwater to Cape Lookout between 60 NM and 150 NM offshore Cape Lookout to Florence, OR between 60 NM and 150 NM offshore Florence, OR to Point St. George between 60 NM and 150 NM offshore Point St. George to Point Arena between 60 NM and 150 NM offshore Point Arena to Pigeon Point between 60 NM and 150 NM offshore Pigeon Point to Point Piedras Blancas between 60 NM and 150 NM offshore Point Piedras Blancas to Santa Cruz Island, CA between 60 NM and 150 NM offshore Santa Cruz Island, CA to San Clemente Island, CA between 60 NM and 150 NM offshore Cape Flattery to Cape Shoalwater between 150 NM and 250 NM offshore Cape Shoalwater to Cape Lookout between 150 NM and 250 NM offshore Cape Lookout to Florence, OR between 150 NM and 250 NM offshore Florence, OR to Point St. George between 150 NM and 250 NM offshore Point St. George to Point Arena between 150 NM and 250 NM offshore Point Arena to Pigeon Point between 150 NM and 250 NM offshore Pigeon Point to Point Piedras Blancas between 150 NM and 250 NM offshore Point Piedras Blancas to Santa Cruz Island, CA between 150 NM and 250 NM offshore Santa Cruz Island, CA to 120W between 150 NM and 250 NM offshore San Clemente Island, CA to Guadalupe Island from 60 NM Offshore west to 120WJuneau, AK Fairbanks, AK Anchorage, AK Western US Arctic Offshore Eastern US Arctic Offshore Bering Sea offshore 171 degrees West to 180 degrees and north of 56 degrees North Bering Sea offshore 171 degrees West to 180 degrees and south of 56 degrees North Pribilof Islands (St. Paul and St. George) Bering Sea offshore east of 171 degrees West Gulf of Alaska offshore north of 57 degrees North and west of 144 degrees West Gulf of Alaska offshore south of 57 degrees North north of 55 degrees North and west of 144 degrees West Gulf of Alaska north of 55 degrees North and east of 144 degrees West
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