Moderate

* WHAT...Peak heat index values of around 100 degrees expected. * WHERE...Portions of north central, northeast, and northwest Ohio. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning

* WHAT...High temperatures of 96 to 105 expected for most valley locations. Moderate to Major HeatRisk expected. * WHERE...Lake County, and Southeastern Interior Mendocino. * WHEN...From noon today to 10 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses especially for those without cooling or hydration. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Heat index values up to 103 degrees expected. * WHERE...Adams, Cumberland, Dauphin, Lancaster, Lebanon, and York Counties. * WHEN...Until 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Some showers and thunderstorms this afternoon and Friday may provide local relief from the heat, but it will remain very humid. It will then turn much less humid this weekend in the wake of a cold front, but temperatures will remain above normal.

* WHAT...Heat index values up to 100 expected. * WHERE...Franklin County, Hampshire County, Hampden County, Hartford CT, Tolland CT, and Windham CT. * WHEN...From noon today to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning

* WHAT...Heat index values up to 98 expected. * WHERE...Portions of central, eastern, northeastern, and southeastern Massachusetts and northern Rhode Island. * WHEN...From noon today to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Heat index values up to 97 expected. * WHERE...Northern Worcester MA County. * WHEN...From noon today to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

At 742 AM EDT, Doppler radar was tracking a strong thunderstorm near DuBois, moving east at 30 mph. HAZARD...Half inch hail. SOURCE...Radar indicated. IMPACT...Minor hail damage to vegetation is possible. Locations impacted include... DuBois, Clearfield, Sandy, Penfield, Plymptonville, Rockton, Force, Benezette, Brandy Camp, Brockport, Parker Dam State Park, Lecontes Mills, Medix Run, S.B. Elliot State Park, Falls Creek, Kersey, Weedville, Treasure Lake, Clearfield-Lawrence Airport, and Penn State Dubois.

A low pressure system will bring increased moisture toward Yakutat and the northern gulf coast this weekend. This event will not be long in duration, lasting around 24 to 48 hours. It will bring heavy rain during most of the event, with the most likely scenario being 2 to 3 inches of rain over 24 hours. There is a 60% chance of greater than 2 inches in 24 hours and similarly a 60% chance of greater than 3 inches of rain in 48 hours. That being said, no

* WHAT...Temperatures up to 105 degrees. * WHERE...Central and Eastern El Paso County, Rio Grande Valley along Southern Hudspeth County. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses, especially during extended periods of time outdoors. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose

Webcam and satellite imagery is showing fog across Schoolcraft and Luce counties this morning, with some spots getting down to around 1/4 mile. Commuters and travelers should slow down and use their low beam headlights in order to navigate the fog safely.