* WHAT. Heat index values up to 102. * WHERE. Portions of central, eastern, northeastern, southeastern, and western Massachusetts and northern Rhode Island. * WHEN. Until 7 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 102. * WHERE. In Connecticut, Hartford CT, Tolland CT, and Windham CT Counties. In Massachusetts, Eastern Hampden MA, Eastern Hampshire MA, Western Hampden MA, and Western Hampshire MA Counties. * WHEN. Until 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 104 this afternoon and between 95 and 100 degrees. * WHERE. In Connecticut, Hartford CT, Tolland CT, and Windham CT Counties. In Massachusetts, Eastern Hampden MA, Eastern Hampshire MA, Western Hampden MA, and Western Hampshire MA Counties. * WHEN. Until 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 104. * WHERE. Portions of central, eastern, northeastern, southeastern, and western Massachusetts and northern Rhode Island. * WHEN. Until 7 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Dangerously hot conditions with heat index values up to 105 expected. * WHERE. Portions of south central, southwest, and western Maine and central, northern, and southern New Hampshire. * WHEN. From 11 AM this morning to 7 PM EDT this evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Heat index values up to 100 expected. * WHERE. In Maine, Southern Somerset and Southern Franklin Counties. In New Hampshire, Sullivan, Northern Carroll, Northern Grafton, Southern Coos, Southern Grafton, and Cheshire Counties. * WHEN. From 11 AM this morning to 7 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Rhode Island Department of Environmental Management has issued an Air Quality Action Day for Ground Level Ozone, from 11 AM to 11 PM EDT Thursday. An Air Quality Action day means that Ground Level Ozone concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the Rhode Island Department of Environmental Management website at: https://dem.ri.gov/

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, from 11 AM to 11 PM EDT Thursday. An Air Quality Alert means that Ground Level Ozone concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups. Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/orgs/massachusetts-department-of-environmental- protection

* WHAT. Flooding caused by excessive rainfall is expected. * WHERE. A portion of southern New Hampshire, including the following county, Cheshire. * WHEN. Until 600 PM EDT. * IMPACTS. Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS. - At 259 PM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include. Winchester and Hinsdale.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 438 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN MAINE THIS WATCH INCLUDES 11 COUNTIES IN SOUTH CENTRAL MAINE KENNEBEC KNOX LINCOLN SAGADAHOC WALDO IN SOUTHWEST MAINE ANDROSCOGGIN CUMBERLAND YORK IN WEST CENTRAL MAINE SOMERSET IN WESTERN MAINE FRANKLIN OXFORD IN NEW HAMPSHIRE THIS WATCH INCLUDES 10 COUNTIES IN CENTRAL NEW HAMPSHIRE BELKNAP MERRIMACK STRAFFORD SULLIVAN IN NORTHERN NEW HAMPSHIRE CARROLL COOS GRAFTON IN SOUTHERN NEW HAMPSHIRE CHESHIRE HILLSBOROUGH ROCKINGHAM THIS INCLUDES THE CITIES OF ALFRED, ALNA, ANDOVER, APPLETON, ARROWSIC, ASHLAND, ATHENS, ATKINSON, AUBURN, AUGUSTA, AVON, BARRINGTON, BATH, BELFAST, BERLIN, BETHEL, BETHLEHEM, BIDDEFORD, BOSCAWEN, BOWDOIN, BOWDOINHAM, BREMEN, BRIDGEWATER, BRISTOL, BROOKFIELD, BROOKS, BRYANT POND, BYRON, CAMDEN, CANTERBURY, CAPE ELIZABETH, CHESTER, CHINA, CLAREMONT, COBURN GORE, CONCORD, CORNISH, CORNVILLE, CROYDON, DAMARISCOTTA, DAVIS, DERRY, DOVER, DRESDEN, DUMMER, DUNBARTON, DURHAM, EMBDEN, ERROL, FARMINGTON, GILFORD, GILSUM, GOSHEN, GRANTHAM, GREENE, HAMPSTEAD, HANOVER, HOLLIS, HOPE, JACKSON, JACKSON, KEENE, KINGFIELD, KNOX, LACONIA, LEBANON, LEBANON, LEMPSTER, LEWISTON, LIBERTY, LINCOLN, LITTLETON, LOUDON, LYME, MADBURY, MANCHESTER, MARLOW, MILAN, MILLSFIELD, MINOT, MONTVILLE, MORRILL, NASHUA, NEW GLOUCESTER, NEW PORTLAND, NEWCASTLE, NEWTON, OLD ORCHARD BEACH, OQUOSSOC, OSSIPEE, OWLS HEAD, PALERMO, PALMYRA, PELHAM, PHIPPSBURG, PITTSFIELD, PLAISTOW, PORTLAND, RANGELEY, ROCHESTER, ROCKLAND, ROCKPORT, ROLLINSFORD, SABATTUS, SACO, SALEM, SANFORD, SIDNEY, SKOWHEGAN, SOMERSWORTH, SOUTH PORTLAND, SUGAR HILL, SULLIVAN, SURRY, TOPSHAM, TUFTONBORO, TURNER, UNITY, UPTON, VASSALBORO, WAKEFIELD, WALES, WATERVILLE, WESTBROOK, WHITEFIELD, WILSONS MILLS, WINDSOR, WOLFEBORO, AND YORK POND.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 438 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN MASSACHUSETTS THIS WATCH INCLUDES 4 COUNTIES IN CENTRAL MASSACHUSETTS WORCESTER IN EASTERN MASSACHUSETTS MIDDLESEX IN NORTHEASTERN MASSACHUSETTS ESSEX IN WESTERN MASSACHUSETTS FRANKLIN THIS INCLUDES THE CITIES OF FITCHBURG, FRAMINGHAM, GLOUCESTER, GREENFIELD, LAWRENCE, LOWELL, AND WORCESTER.