Moderate

* WHAT...Heat index values up to 108 to 112 expected. * WHERE...Portions of south central and southwest Alabama, northwest Florida, and southeast Mississippi. * WHEN...From 11 AM this morning 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. Take extra precautions when outside. Wear lightweight and loose

At 513 AM CDT, Doppler radar was tracking a strong thunderstorm near Haleyville, moving southeast at 25 mph. HAZARD...Wind gusts up to 50 mph and pea 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... Haleyville, Lynn, Double Springs, Houston Recreational Area, Needmore, Winston Free State Barn, Ashridge, Ashbank, Smith Lake,

At 543 AM EDT, Doppler radar was tracking strong thunderstorms along a line extending from Harrogate to 6 miles north of Bean Station. Movement was east at 30 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Sneedville, Jonesville, Bean Station, Harrogate, Howard Quarter, Cumberland Gap, Evanston, Rose Hill, Treadway, and Ewing. If outdoors, consider seeking shelter inside a building.

At 452 AM CDT, Doppler radar was tracking a strong thunderstorm over Hackleburg, or 11 miles west of Haleyville, moving southeast at 20 mph. HAZARD...Wind gusts up to 50 mph and pea 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... Hackleburg, Bear Creek, Tessner, and Upper Bear Creek Reservoir. If outdoors, consider seeking shelter inside a building.

At 455 AM CDT, Doppler radar indicated a strong thunderstorm 4 miles southeast of Gans, moving southeast at 30 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down small tree limbs and blow around unsecured objects. Locations in or near the path include... Fort Smith... Van Buren... Sallisaw... Poteau... Charleston... Cedarville... Greenwood... Alma...

Fog has developed and is dense in some valley locations. This fog will linger during the morning commute. Visibilities will be below a quarter of a mile in some locations and may vary widely over short distances. Slow down, use your low beam headlights when you encounter fog, and allow extra time to reach your destination.

At 500 AM CDT, Doppler radar was tracking a cluster of strong thunderstorms 7 miles east of Dunning, or 10 miles southwest of Brewster, moving southeast at 30 mph. HAZARD...Wind gusts up to 40 mph and penny 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... Taylor, Merna, Anselmo, Dunning, Victoria Springs State Recreation

At 528 AM EDT, Doppler radar was tracking a strong thunderstorm 8 miles northeast of Parrottsville, or 11 miles west of Greeneville, moving northeast at 35 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Greeneville, Tusculum, Mosheim, Caney Branch, Chucky, Cedar Creek, Limestone, Camp Creek, and Davy Crockett Birthplace. If outdoors, consider seeking shelter inside a building.

* WHAT...Heat index values in excess of 105 degrees expected and up to 110 degrees possible. * WHERE...Portions of southeast Arkansas, northeast Louisiana, and much of eastern Mississippi. * WHEN...From 11 AM this morning to 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat related 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

Fog has expanded into the Detroit Lakes, Fergus Falls and the surrounding lake region, occasionally reducing visibility to around one-quarter mile. Patchy fog is also possible in southeast North Dakota. Travelers should be prepared for rapidly deteriorating visibility, and to use extra caution at intersections, railroad crossings, and school bus stops. The fog is expected to improve by mid morning.