* 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. Until 8 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. Portions of south central, southwest, west central, and western Maine and central, northern, and southern New Hampshire. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Ground Level Ozone, until 11 PM EDT this evening. 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 Connecticut Department of Energy and Environmental Protection website at: https://portal.ct.gov/deep

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. Unhealthy levels of ozone can cause throat irritation, coughing, chest pain, shortness of breath, increased susceptibility to respiratory infection, and aggravation of asthma and other respiratory ailments, especially with children and the elderly. These symptoms are worsened by outdoor exercise and heavy activity. * Reduce prolonged or heavy exertion. * Take more breaks, do less intense activities. * Watch for symptoms such as coughing or shortness of breath. * People with asthma should follow their asthma action plans and keep quick relief medicine handy. * Schedule outdoor activities in the morning when ozone levels are lower. 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, until 11 PM EDT this evening. 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

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, until 11 PM EDT this evening. 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

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. Heat index values up to 100. * 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 101. * WHERE. Portions of central, eastern, northeastern, southeastern, and western Massachusetts and northern Rhode Island. * WHEN. Until 7 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the first Heat Advisory, heat index values up to 100. For the second Heat Advisory, heat index values up to 96 expected. * WHERE. Sullivan, Northern Grafton, Southern Coos, Southern Grafton, and Cheshire Counties. * WHEN. For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 7 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Tonight's warm overnight lows mainly in the 70s will result in greater cumulative heat stress.

* WHAT. For the first Excessive Heat Warning, dangerously hot conditions with heat index values up to 105. For the second Excessive Heat Warning, 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. For the first Excessive Heat Warning, until 8 PM EDT this evening. For the second Excessive Heat Warning, from 11 AM to 7 PM EDT Thursday. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS. Tonight's warm overnight low temperatures mainly in the 70s will result in greater cumulative heat stress.

* WHAT. Heat index values up to 95 to 100. * WHERE. Northern Middlesex and Northern New London Counties. * WHEN. Until 8 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, from 11 AM this morning to 11 PM EDT this evening. 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

The Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Ground Level Ozone, from 11 AM this morning to 11 PM EDT this evening. 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 Connecticut Department of Energy and Environmental Protection website at: https://portal.ct.gov/deep

The New Hampshire Department of Environmental Services has issued an Air Quality Alert for ozone from 11 AM to 11 PM EDT Wednesday. The New Hampshire Department of Environmental Services is predicting unhealthy air quality in the above-mentioned counties. Sensitive individuals include children and older adults; anyone with lung disease such as asthma, emphysema, and bronchitis; and people who are active outdoors. Even healthy individuals may experience mild health effects and should consider limiting strenuous or prolonged outdoor activities. For additional information, please visit the New Hampshire Department of Environmental Prediction website at, https://www4.des.state.nh.us/airdata/

SVRBOX The National Weather Service in Boston/Norton has issued a * Severe Thunderstorm Warning for. Northwestern Worcester County in central Massachusetts. Northeastern Franklin County in western Massachusetts. * Until 615 PM EDT. * At 525 PM EDT, a severe thunderstorm was located over Warwick, or near Orange, moving southeast at 15 mph. HAZARD. 60 mph wind gusts and nickel size hail. SOURCE. Radar indicated. IMPACT. Expect damage to roofs, siding, and trees. * Locations impacted include. Orange, Athol, Winchendon, Templeton, Northfield, Erving, Phillipston, Royalston, New Salem, Wendell, and Warwick.

At 535 PM EDT, a severe thunderstorm was located over Orange, moving southeast at 15 mph. HAZARD. 60 mph wind gusts and quarter size hail. SOURCE. Radar indicated. IMPACT. Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include. Orange, Athol, Winchendon, Templeton, Northfield, Erving, Phillipston, Royalston, New Salem, Wendell, and Warwick.

SVRBOX The National Weather Service in Boston/Norton has issued a * Severe Thunderstorm Warning for. Southwestern Hampshire County in western Massachusetts. Southwestern Franklin County in western Massachusetts. Northwestern Hampden County in western Massachusetts. * Until 615 PM EDT. * At 533 PM EDT, a severe thunderstorm was located over Westhampton, or near Northampton, moving southeast at 15 mph. HAZARD. 60 mph wind gusts and nickel size hail. SOURCE. Radar indicated. IMPACT. Expect damage to roofs, siding, and trees. * Locations impacted include. Chicopee, Westfield, Holyoke, Northampton, Ludlow, South Hadley, Easthampton, Granby, Southampton, Hadley, Hatfield, Williamsburg, Huntington, Conway, Russell, Westhampton, Granville, Whately, Chester, and Blandford.

At 558 PM EDT, a severe thunderstorm was located over Easthampton, or near Northampton, moving southeast at 10 mph. HAZARD. 60 mph wind gusts and nickel size hail. SOURCE. Trained weather spotters. IMPACT. Expect damage to roofs, siding, and trees. Locations impacted include. Chicopee, Westfield, Holyoke, Northampton, Ludlow, South Hadley, Easthampton, Granby, Southampton, Hadley, Hatfield, Huntington, Russell, Westhampton, and Montgomery.

At 553 PM EDT, a severe thunderstorm was located over Athol, or near Orange, moving southeast at 15 mph. HAZARD. 60 mph wind gusts and quarter size hail. SOURCE. Radar indicated. IMPACT. Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include. Orange, Athol, Winchendon, Templeton, Erving, Phillipston, Royalston, New Salem, Wendell, and Warwick.

SVRBOX The National Weather Service in Boston/Norton has issued a * Severe Thunderstorm Warning for. Northwestern Worcester County in central Massachusetts. East central Hampshire County in western Massachusetts. Southeastern Franklin County in western Massachusetts. * Until 645 PM EDT. * At 552 PM EDT, a severe thunderstorm was located over Athol, or near Orange, moving south at 15 mph. HAZARD. 60 mph wind gusts and nickel size hail. SOURCE. Radar indicated. IMPACT. Expect damage to roofs, siding, and trees. * Locations impacted include. Orange, Belchertown, Athol, Ware, Templeton, Rutland, Barre, Hubbardston, Hardwick, Oakham, Phillipston, Pelham, Royalston, Petersham, New Braintree, New Salem, and Warwick.

* WHAT. Flooding caused by excessive rainfall is expected. * WHERE. A portion of western Massachusetts, including the following counties, Franklin and Hampshire. * WHEN. Until 730 PM EDT. * IMPACTS. Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS. - At 429 PM EDT, Doppler radar indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are possible in the warned area. - Some locations that will experience flooding include. Deerfield, Monroe, Buckland, Conway, Shelburne, Ashfield, Colrain, Charlemont, Goshen, Heath, Plainfield, Rowe and Hawley. - http://www.weather.gov/safety/flood