* WHAT. Heat index values up to 97 expected. * WHERE. Eastern Greene, Eastern Ulster, Western Columbia, and Western Dutchess Counties. * WHEN. From 1 PM to 8 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

At 513 AM EDT, Doppler radar was tracking a strong thunderstorm over Marlboro, or near Beacon, moving northeast at 25 mph. HAZARD. Wind gusts 30 to 40 mph and pea size hail. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include. Poughkeepsie, Beacon, Hyde Park, Plattekill, Pleasant Valley, Wappingers Falls, Amenia, Highland, Fishkill, Millbrook, Modena, Stanfordville, Fairview, Hopewell Junction, Marlboro, Red Oaks Mill, Myers Corner, Dover Plains, East Fishkill, and Beekman. This includes Interstate 87 near exit 18.

* WHAT. Heat index values of 95 to 99 degrees expected. * WHERE. Eastern Albany, Eastern Columbia, Eastern Dutchess, and Western Rensselaer Counties. * WHEN. From 2 PM this afternoon to 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values of 95 to 100 degrees expected. * WHERE. Eastern Greene, Eastern Ulster, Western Columbia, and Western Dutchess Counties. * WHEN. From 1 PM this afternoon to 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.