Moderate

* WHAT...Strong thunderstorms with organized outflow wind gusts of 45-55 mph will result in blowing dust, reducing visibility between one-quarter mile and one mile at times. Haboob formation is possible. Dense blowing dust will initially develop across southeast Pima and western Santa Cruz counties during the late afternoon and spread west to northwest across the Tohono O'odham Nation and into western Pima and southeast Pinal counties through

At 1228 AM MDT, Doppler radar was tracking a strong thunderstorm 7 miles northeast of Seibert, moving east at 20 mph. HAZARD...Wind gusts up to 55 mph, pea size hail and torrential rainfall. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. This storm will remain over mainly rural areas of western Kit Carson County. This includes Interstate 70 in Colorado between mile markers 402 and 419.

Fog continues to impacts areas in the Rock River Valley from Watertown to Janesville, Horicon Marsh, and portions of Fond du Lac County. The fog may gradually expand through the morning. Expect visibility of 1 mile or less in low-lying areas. If traveling, use low beam headlights and slow down when encountering sudden drops in visibility.

* WHAT...Heat index values up to 107 and temperatures up to 104. * WHERE...Bell, Comanche, Coryell, Hamilton, Lampasas, Mills, and Milam Counties. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity will increase the risk for heat-related illnesses to occur, particularly for those working or participating in outdoor activities. Take extra precautions when outside by staying hydrated, wearing lightweight and loose fitting clothing, and limiting strenuous

* WHAT...Heat index values up to 108. * WHERE...Navarro, Anderson, and Henderson Counties. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity will increase the risk for heat-related illnesses to occur, particularly for those working or participating in outdoor activities. Take extra precautions when outside by staying hydrated, wearing lightweight and loose fitting clothing, and limiting strenuous activities to the early morning or evening. Check up on relatives and

* WHAT...Heat index values up to 109 and temperatures up to 104. * WHERE...Bosque, Falls, Freestone, Hill, Limestone, McLennan, Leon, and Robertson Counties. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity will increase the risk for heat-related illnesses to occur, particularly for those working or participating in outdoor activities. Take extra precautions when outside by staying hydrated, wearing lightweight and loose fitting clothing, and limiting strenuous

* WHAT...Heat index values up to 109 expected. * WHERE...Williamsburg County. * WHEN...From 11 AM this morning 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.

* WHAT...Heat index values up to 109 expected. * WHERE...Portions of southeast North Carolina and northeast South Carolina. * WHEN...From 11 AM this morning 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.

At 1258 AM CDT, Doppler radar was tracking a strong thunderstorm near White River, moving east at 30 mph. HAZARD...Wind gusts up to 50 mph and half inch size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Wood, Mosher, Butte Creek and Intersection of Highway 83 and White River. Monitor the weather situation closely and be alert for threatening weather conditions.

* WHAT...Heat index values up to 109 expected. * WHERE...Portions of central, south central, and southwest Louisiana. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning