Moderate

* WHAT...Heat index values up to 104 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...From 11 AM Thursday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Some showers and thunderstorms later Thursday

* WHAT...High temperatures between 90 and 103 for interior valleys and higher elevations. High temperatures between 85 and 96 degrees for the Bay Shoreline. * WHERE...North Bay Interior Mountains and Valleys, and San Francisco Bay Shoreline. * WHEN...From noon to 11 PM PDT Thursday. * IMPACTS...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries.

* WHAT...Temperatures between 90 and 95 for most areas, with some readings above 100 degrees. Hottest conditions across the East Bay Hills and Valleys. * WHERE...The Santa Clara Valley and Eastern Hills, and The East Bay Hills and Valleys. * WHEN...From noon Thursday to 7 PM PDT Friday. * IMPACTS...This level of heat affects primarily those individuals extremely sensitive to heat, especially when outdoors without effective cooling and/or adequate hydration. This level of heat

* WHAT...Heat index values up to 100 degrees. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

* WHAT...Heat index values up to 99. * WHERE...Portions of northern Indiana, southwest Michigan, and northwest Ohio. * WHEN...Until 8 PM EDT /7 PM CDT/ 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

At 244 PM EDT, Doppler radar was tracking a strong thunderstorm over Weigelstown, moving northeast at 25 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... York, Weigelstown, Red Lion, Spry, Dallastown, Shiloh, East York, Stonybrook-Wilshire, West York, Codorus, Grantley, Tyler Run-Queens Gate, Manchester, Hallam, Emigsville, Wrightsville, Spring Grove, Dover, North York, and Yorklyn.

* WHAT...Snow occurring over and near the Beartooth Highway. Additional snow accumulations up to two inches possible. Winds gusting as high as 55 mph. * WHERE...Absaroka/Beartooth Mountains. * WHEN...Until 9 AM MDT Thursday. * IMPACTS...Plan on slippery road conditions. The combination of strong winds and falling snow may result in locally reduced visibility, especially in unsheltered areas. Be prepared for slippery roads. Slow down and use caution while driving. For the latest road conditions, call 5 1 1.

At 209 PM EDT, Doppler radar was tracking a strong thunderstorm 19 miles northwest of Enola, moving east at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Newport, Duncannon, New Bloomfield, New Buffalo, Ickesburg, Liverpool, Thompsontown, Millerstown, and East Salem. If outdoors, consider seeking shelter inside a building.

* WHAT...Heat index values 103 to 107 expected. * WHERE...Portions of east central, eastern, and southeast Virginia. * WHEN...From 11 AM to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Locations along the immediate coast will likely be a few degrees cooler. 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 100 expected. * WHERE...Portions of northeast New Jersey and southeast New York. * WHEN...From noon Thursday to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time. Seniors and those with chronic health problems or mental health