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Heat Advisory — Nelson; Albemarle; Greene Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 109 expected. * WHERE...Albemarle, Greene, and Nelson Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause

Extreme Heat Watch — District of Columbia; Frederick; Carroll; Northern Baltimore; Cecil; Southern Baltimore; Prince Georges; Anne Arundel; Charles; Northwest Montgomery; Central and Southeast Montgomery; Northwest Howard; Central and Southeast Howard; Northwest Harford; Southeas

Heat Advisory — Augusta; Rockingham; Eastern Highland Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 103 expected. * WHERE...Augusta, Eastern Highland, and Rockingham Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and

Extreme Heat Watch — Washington; Shenandoah; Frederick; Page; Warren; Clarke; Morgan; Berkeley; Jefferson Severity: Severe. Certainty: Likely. * WHAT...For the Heat Advisory, heat index values up to 104 expected. For the Extreme Heat Watch, dangerously hot conditions with heat in

Heat Advisory — District of Columbia; Frederick; Carroll; Northern Baltimore; Cecil; Southern Baltimore; Prince Georges; Anne Arundel; Charles; Northwest Montgomery; Central and Southeast Montgomery; Northwest Howard; Central and Southeast Howard; Northwest Harford; Southeast Har

Small Craft Advisory — Rock Island Passage to Sturgeon Bay WI Severity: Minor. Certainty: Likely. * WHAT...South winds 10 to 15 kts with gusts up to 20 kts and waves 2 to 5 ft. * WHERE...Lake Michigan nearshore waters from Washington Island to Sturgeon Bay. * WHEN...Until 4 AM

Small Craft Advisory — Sturgeon Bay to Two Rivers WI; Two Rivers to Sheboygan WI Severity: Minor. Certainty: Likely. * WHAT...South winds 5 to 15 kts with gusts up to 20 kts and waves 2 to 5 ft. * WHERE...Lake Michigan nearshore waters from Sturgeon Bay to Sheboygan. * WHEN...U

Severe Thunderstorm Watch — Dodge, MN; Fillmore, MN; Mower, MN; Olmsted, MN; Wabasha, MN; Winona, MN; Buffalo, WI; Clark, WI; Jackson, WI; Taylor, WI; Trempealeau, WI Severity: Severe. Certainty: Possible. THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 421 IN E

Heat Advisory — Warren Severity: Moderate. Certainty: Likely. * WHAT...Heat index values around 100 degrees expected during the afternoon and evening. * WHERE...Warren County. * WHEN...From noon today to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cau

Heat Advisory — Blair; Bedford; Fulton Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 104 expected. * WHERE...Bedford, Blair, and Fulton Counties. * WHEN...From noon Wednesday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause

Heat Advisory — Potter; Elk; Cameron; Northern Clinton; Clearfield; Northern Centre; Cambria; Tioga; Northern Lycoming; Sullivan Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 104 expected. * WHERE...Cambria, Cameron, Clearfield, Elk, Northern Centre, No

Extreme Heat Warning — Southern Centre; Huntingdon; Mifflin; Juniata; Franklin; Southern Clinton; Southern Lycoming; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster Severity: Severe. Certainty: Likely. * WH

Heat Advisory — McKean Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 101 expected. * WHERE...McKean County. * WHEN...From noon Wednesday to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAI

Heat Advisory — Southern Centre; Huntingdon; Mifflin; Juniata; Franklin; Southern Clinton; Southern Lycoming; Union; Snyder; Montour; Northumberland; Columbia; Perry; Dauphin; Schuylkill; Lebanon; Cumberland; Adams; York; Lancaster Severity: Moderate. Certainty: Likely. * WHAT...

Small Craft Advisory — Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Northerly Island to Calumet Harbor IL; Calumet Harbor IL to Gary IN Severity: Minor. Certainty: Likely. * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to

Severe Thunderstorm Watch — Emmet, IA; Kossuth, IA; Palo Alto, IA; Winnebago, IA; Worth, IA Severity: Severe. Certainty: Possible. THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 421 IN EFFECT UNTIL 10 AM CDT THIS MORNING FOR THE FOLLOWING AREAS IN IOWA THIS WA

Red Flag Warning — Jackson County Below 9000 Feet; Grand and Summit Counties Below 9000 Feet; West Jackson and West Grand Counties Above 9000 Feet; South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet Severity: Severe. Certainty: Lik

Fire Weather Watch — South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet; Central and Southeast Park County; Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Coun

Fire Weather Watch — Elbert/Central and East Douglas Counties Above 6000 Feet Severity: Severe. Certainty: Possible. ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR THE HIGH COUNTRY TODAY...POTENTIALLY CONTINUING THROUGH FRIDAY... A warm and dry airmass will coincide with gusty

Red Flag Warning — South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet; Central and Southeast Park County; Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counti

Small Craft Advisory — Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM Severity: Minor. Certainty: Likely. * WHAT...South winds 15 to 25 kt expected. * WHERE...Coastal waters from Sandy Hook to

Air Quality Alert — Western Passaic; Eastern Passaic; Hudson; Western Bergen; Eastern Bergen; Western Essex; Eastern Essex; Western Union; Eastern Union Severity: Unknown. Certainty: Unknown. The New Jersey Department of Environmental Protection has issued an Air Quality Action D

Air Quality Alert — Northern Fairfield; Northern New Haven; Northern Middlesex; Southern Fairfield; Southern New Haven; Southern Middlesex Severity: Unknown. Certainty: Unknown. The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day

Air Quality Alert — Rockland; Northern Westchester; Southern Westchester; New York (Manhattan); Bronx; Richmond (Staten Is.); Kings (Brooklyn); Northern Queens; Southern Queens Severity: Unknown. Certainty: Unknown. The New York State Department of Environmental Conservation has

Heat Advisory — Russell; Lincoln; Barton; Ellsworth; Saline; Rice; McPherson; Marion; Chase; Reno; Harvey; Butler; Greenwood; Woodson; Allen; Kingman; Sedgwick; Harper; Sumner; Cowley; Elk; Wilson; Neosho; Chautauqua; Montgomery; Labette Severity: Moderate. Certainty: Likely. * W

Extreme Heat Watch — Kent; Inland Sussex; Delaware Beaches; Kent; Queen Anne's; Talbot; Caroline Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 110 degrees possible. * WHERE...In Delaware, Kent, Delaware Beaches, and Inland

Extreme Heat Warning — Carbon; Monroe Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values between 100 and 108 degrees expected at lower elevations each day. Heat index values up to 100 degrees expected across the Pocono Plateau. * WHER

Small Craft Advisory — Long Island Sound West of New Haven CT/Port Jefferson NY; New York Harbor; South Shore Bays from Jones Inlet through Shinnecock Bay; Sandy Hook NJ to Fire Island Inlet NY out 20 NM Severity: Minor. Certainty: Likely. * WHAT...South winds 10 to 20 kt with gu

Extreme Heat Watch — Atlantic Coastal Cape May; Coastal Atlantic; Coastal Ocean Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 105 degrees possible. * WHERE...Atlantic Coastal Cape May, Coastal Atlantic, and Coastal Ocean Co

Extreme Heat Warning — New Castle; Mercer; Salem; Gloucester; Camden; Northwestern Burlington; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values between 100 and

Extreme Heat Watch — Cumberland; Atlantic; Cape May Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 110 degrees possible. * WHERE...Atlantic, Cape May, and Cumberland Counties. * WHEN...From Thursday afternoon through Saturd

Extreme Heat Warning — Sussex; Warren; Morris; Hunterdon; Berks; Lehigh; Northampton; Western Chester; Western Montgomery; Upper Bucks Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values between 100 and 110 degrees expected each day. *

Extreme Heat Warning — Somerset; Middlesex; Western Monmouth; Eastern Monmouth; Ocean; Southeastern Burlington Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values between 100 and 110 degrees expected each day. * WHERE...Eastern Monmout

Extreme Heat Watch — Northern Fairfield; Northern New Haven; Northern Middlesex; Southern Fairfield; Southern New Haven; Western Passaic; Eastern Passaic; Hudson; Western Bergen; Eastern Bergen; Western Essex; Eastern Essex; Western Union; Eastern Union; Orange; Putnam; Rockland;

Extreme Heat Watch — Northern New London; Southern Middlesex; Southern New London; Northwest Suffolk; Northeast Suffolk; Southwest Suffolk; Southeast Suffolk; Northern Nassau; Southern Nassau Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index

Extreme Heat Watch — New York (Manhattan); Bronx; Richmond (Staten Is.); Kings (Brooklyn); Northern Queens; Southern Queens Severity: Severe. Certainty: Likely. * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values around 105 expected. For the E

Extreme Heat Warning — Northern Fairfield; Northern New Haven; Northern Middlesex; Southern Fairfield; Southern New Haven; Western Passaic; Eastern Passaic; Hudson; Western Bergen; Eastern Bergen; Western Essex; Eastern Essex; Western Union; Eastern Union; Orange; Putnam; Rocklan

Extreme Heat Warning — New York (Manhattan); Bronx; Richmond (Staten Is.); Kings (Brooklyn); Northern Queens; Southern Queens Severity: Severe. Certainty: Likely. * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values around 105 expected. For the

Extreme Heat Warning — Rowan; Menifee Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions will continue for several consecutive days with afternoon heat index values exceeding 105 degrees and only limited relief at night. * WHERE...Menifee and Rowan Counties

Extreme Heat Warning — Fleming; Montgomery; Bath; Estill; Powell; Rockcastle; Jackson; Pulaski; Laurel; Wayne; McCreary; Whitley; Knox Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions will continue for several consecutive days with afternoon heat index val

Extreme Heat Warning — Bell; Harlan; Elliott; Morgan; Johnson; Wolfe; Magoffin; Floyd; Lee; Breathitt; Knott; Owsley; Perry; Clay; Leslie; Letcher; Martin; Pike Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions are expected for several consecutive days with

Extreme Heat Warning — Republic; Washington; Marshall; Nemaha; Brown; Cloud; Clay; Riley; Pottawatomie; Jackson; Jefferson; Ottawa; Dickinson; Geary; Morris; Wabaunsee; Shawnee; Douglas; Lyon; Osage; Franklin; Coffey; Anderson Severity: Severe. Certainty: Likely. * WHAT...Dangero

Heat Advisory — Dade; Walker; Catoosa; Whitfield; Murray; Chattooga; Gordon; Floyd; Bartow; Jackson; Polk; Paulding; Cobb; North Fulton; Gwinnett; Barrow; Clarke; Oconee; Haralson; Carroll; Douglas; South Fulton; DeKalb; Rockdale; Walton; Newton; Morgan; Greene; Heard; Coweta; Fa

Heat Advisory — Cherokee; Forsyth Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 106 expected. * WHERE...Cherokee and Forsyth Counties. * WHEN...From noon today to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat ill

Marine Weather Statement — Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI; St. Marys River Point Iroquois to E. Potagannissing Bay Severity: Minor. Certainty: Observed. A significant meteotsunami/seiche is ongoing on the St Mary's River, with a rise fall magnit

Heat Advisory — Pickett; Overton; Fentress; White; Cumberland; Coffee; Warren; Grundy; Van Buren Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 107 expected. * WHERE...Coffee, Cumberland, Fentress, Grundy, Overton, Pickett, Van Buren, Warren, and White C

Extreme Heat Warning — Stewart; Montgomery; Robertson; Sumner; Macon; Clay; Houston; Humphreys; Dickson; Cheatham; Davidson; Wilson; Trousdale; Smith; Jackson; Putnam; Perry; Hickman; Lewis; Williamson; Maury; Marshall; Rutherford; Cannon; De Kalb; Bedford; Wayne; Lawrence; Giles

Red Flag Warning — San Rafael Swell; Henry Mountains Severity: Severe. Certainty: Likely. * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell and Fire Weather Zone 494 Henry Mountains. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low a

Heat Advisory — Chisago; Wright; Hennepin; Anoka; Ramsey; Washington; McLeod; Sibley; Carver; Scott; Dakota; Brown; Nicollet; Le Sueur; Rice; Goodhue; Watonwan; Blue Earth; Waseca; Steele; Martin; Faribault; Freeborn; Polk; Barron; Rusk; St. Croix; Pierce; Dunn; Pepin; Chippewa;

Heat Advisory — Coffee; Dale; Henry; Geneva; Houston; North Walton; Central Walton; Holmes; Washington; Jackson; Inland Bay; Calhoun; Inland Gulf; Inland Franklin; Gadsden; Leon; Inland Jefferson; Inland Wakulla; South Walton; Coastal Bay; Coastal Gulf; Coastal Franklin; Coastal