Moderate

* WHAT...Temperatures and heat index values up to 108 expected. * WHERE...Portions of central, east central, northwest, southeast, and western Oklahoma. * WHEN...From noon today to 8 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.

* WHAT...Heat index values up to 109 expected. * WHERE...Atoka County. * WHEN...From noon today to 8 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.

* WHAT...Heat index values up to 110 expected. * WHERE...Portions of Big Bend and Panhandle Florida. * WHEN...From noon EDT /11 AM CDT/ today to 7 PM EDT /6 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 103 AM CDT, a strong thunderstorm was located 5 miles south of Flaxton, or 34 miles north of Stanley, moving east at 35 mph. HAZARD...Wind gusts up to 50 mph and nickel 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... Kenmare, Bowbells, Lignite, Portal, Flaxton, Coteau, Niobe, and Northgate. This storm may intensify, so be certain to monitor local radio

* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. expected. * WHERE...Portions of Puerto Rico and Virgin Islands. * WHEN...From 10 AM this morning to 4 PM AST this afternoon. * 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. To reduce risk during outdoor work, the Occupational Safety and

* WHAT...Visibility of a quarter-mile or less in dense fog. * WHERE...Coastal Hancock and Coastal Washington Counties. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility of a quarter-mile or less in dense fog. * WHERE...Central Washington County. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Dangerous rip currents expected. * WHERE...Nantucket MA County. * WHEN...From 8 AM EDT this morning through this afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

* WHAT...Dangerous rip currents expected. * WHERE...Dukes MA County. * WHEN...From 8 AM EDT this morning through this afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

At 1033 PM MST, a wall of dust was along a line extending from near Tonopah to 8 miles southwest of Wittmann to Circle City to near Humbug Bay, and is moving at 20 mph. HAZARD...Less than a mile visibility with strong wind in excess of 40 mph. SOURCE...Doppler radar. IMPACT...Hazardous travel. This includes US Highway 60 between mile markers 80 and 116. Locations impacted include... Wickenburg and Aguila. Blowing dust brings reduced visibility, leading to dangerous driving