Expected

Areas of fog are developing near the Turtle Mountains, Devils Lake Basin, and northern James River Valley late tonight. The fog will reduce visibility to one quarter mile or less, and could become more widespread by Tuesday morning. Motorists should be prepared for rapidly changing conditions and use extra caution traveling. Use low beam headlights and be extra cautious at intersections and railroad crossings.

At 1155 PM MDT, Doppler radar was tracking a cluster of strong thunderstorms near Chivington, or 21 miles north of Lamar, moving east at 20 mph. HAZARD...Wind gusts up to 50 mph and half inch 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... Sheridan Lake, Chivington, Brandon, Towner, Queens Reservoir, and Neeoshe Reservoir.

* WHAT...Maximum heat index values of 105 to 109 expected this afternoon. * WHERE...Barbour, Bullock, Calhoun, Chambers, Cherokee, Clay, Cleburne, Coosa, Etowah, Lee, Macon, Pike, Randolph, Russell, St. Clair, Talladega, and Tallapoosa Counties. * WHEN...From 10 AM this morning to 9 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. Young children and

* WHAT...Maximum heat index values of 105 to 109 expected this afternoon. * WHERE...Autauga, Bibb, Blount, Chilton, Dallas, Elmore, Fayette, Greene, Hale, Jefferson, Lamar, Lowndes, Marengo, Marion, Montgomery, Perry, Pickens, Shelby, Sumter, Tuscaloosa, Walker, and Winston Counties. * WHEN...Until 9 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

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of southeast Kentucky, including the following counties, Clay and Knox. * WHEN...Until 315 AM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 200 AM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen.

* 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 5 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. Take extra precautions when outside. Wear lightweight and loose

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...West Central Marion County in northern Florida... * WHEN...Until 330 AM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 136 AM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 3 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over

* WHAT...Heat index values up to 108 expected. * WHERE...Portions of east central Georgia and central South Carolina. * WHEN...From noon today to 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...Dangerously hot conditions with heat index values up to 114. * WHERE...Portions of central, eastern, north central, southeast, and western Arkansas. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. 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

* WHAT...Heat index values up to 109. * WHERE...Portions of central, north central, southeast, southwest, and western Arkansas. * WHEN...Until 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning