Severe

* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 103 degrees at Havasupai Gardens, to 110 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 8 PM MST this evening. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. This warning is reserved for only the hottest days of the year and is

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN PENNSYLVANIA THIS WATCH INCLUDES 8 COUNTIES IN CENTRAL PENNSYLVANIA CAMBRIA CAMERON CLEARFIELD ELK MCKEAN POTTER SOMERSET WARREN THIS INCLUDES THE CITIES OF BRADFORD, CLEARFIELD, COUDERSPORT, DUBOIS, EMPORIUM, JOHNSTOWN, RIDGWAY, SOMERSET, ST. MARYS, AND WARREN.

At 137 PM EDT, a severe thunderstorm was located 10 miles east of Dunkirk and moving northeast at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Springville, Gowanda, North Collins, North Boston, Concord, Collins, Dayton, Perrysburg, Versailles, and Langford. For your protection move to an interior room on the lowest floor of a building.

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of east central Illinois, including the following counties, Ford and Iroquois and northwest Indiana, including the following counties, Benton, Jasper and Newton. * WHEN...Until 11 PM CDT /midnight EDT/ this evening. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Underpasses may be flooded. Roads and streets may be flooded. * ADDITIONAL DETAILS...

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lee, Livingston, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following areas, Lake IN and Porter. * WHEN...Until 11 PM CDT this evening. * IMPACTS...Creeks and streams may rise out of their banks. Flooding

The National Weather Service in Fairbanks has issued a Fire Weather Watch, which is in effect from Saturday afternoon through Sunday evening. * AFFECTED AREA...Delta Junction. * TIMING...From Saturday afternoon through Sunday evening. * WINDS...Southeast 10 to 20 mph with gusts up to 40 mph. * HUMIDITY...As low as 15 to 20 percent. * TEMPERATURES...Highs in the upper 70s. Lows in the lower 50s. * IMPACTS...Critical fire weather conditions are possible due to a combination of low relative humidity, gusty winds from the south, and dry fuels.

At 1212 PM CDT, a severe thunderstorm was located over Victoria, or 14 miles northeast of Galesburg, moving east at 40 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. This severe thunderstorm will remain over mainly rural areas of northeastern Knox County, including the following locations... Dahinda. This includes Interstate 74 between mile markers 51 and 53.

SVRBUF The National Weather Service in Buffalo has issued a * Severe Thunderstorm Warning for... Northwestern Cattaraugus County in western New York... Southwestern Erie County in western New York... Northeastern Chautauqua County in western New York... * Until 215 PM EDT. * At 116 PM EDT, a severe thunderstorm was located near Fredonia, moving northeast at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include...

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN OHIO THIS WATCH INCLUDES 3 COUNTIES IN SOUTHEAST OHIO ATHENS MORGAN WASHINGTON IN WEST VIRGINIA THIS WATCH INCLUDES 8 COUNTIES IN CENTRAL WEST VIRGINIA TAYLOR IN NORTHERN WEST VIRGINIA BARBOUR DODDRIDGE HARRISON PLEASANTS RITCHIE TYLER WOOD THIS INCLUDES THE CITIES OF ATHENS, BELINGTON, BELMONT, BELPRE,

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 312 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN OHIO THIS WATCH INCLUDES 5 COUNTIES IN NORTHEAST OHIO ASHTABULA MAHONING PORTAGE STARK TRUMBULL IN PENNSYLVANIA THIS WATCH INCLUDES 2 COUNTIES IN NORTHWEST PENNSYLVANIA CRAWFORD ERIE THIS INCLUDES THE CITIES OF ALLIANCE, ASHTABULA, AURORA, AUSTINTOWN, BOARDMAN, CANTON, CONNEAUT, ERIE, GENEVA, KENT,