Moderate

* WHAT...Heat index values up to 106. * WHERE...Portions of north central, northeast, and south central Texas. * WHEN...Until 8 PM CDT Tuesday. * 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

At 951 PM MDT, Doppler radar was tracking a strong thunderstorm 6 miles south of Chaco Canyon, or 22 miles north of Crownpoint, moving east southeast at 20 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... Chaco Canyon. Monitor the weather situation closely and be alert for threatening weather conditions.

* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. Winds will shift to the southwest Wednesday morning. * WHERE...Lower Yukon and Innoko Valleys, North Slopes of the Western Alaska Range, and Upper Kuskokwim Valley. * WHEN...From 10 AM Tuesday to 4 PM AKDT Wednesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel could be difficult. People are urged to secure loose objects that could be blown around

* WHAT...West winds 15 to 20 mph with gusts up to 35 mph. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Garfield, McCone, and Petroleum Counties. * WHEN...Until midnight MDT tonight. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Boaters on Fort Peck Lake should use extra caution since strong winds and rough waves can overturn small craft.

The combination of hot temperatures and elevated humidity levels will produce heat index values between 108 and 111 degrees for several hours Tuesday afternoon into Tuesday evening. A few locations may briefly experience heat index values above 111 degrees. If you plan to spend time outside, drink plenty of water, wear light weight and light colored clothing and take frequent breaks from the heat. Young children and pets should never be left unattended in vehicles.

At 822 PM MST, Doppler radar was tracking a strong thunderstorm 11 miles northwest of Hilltop, or 25 miles northeast of Globe, moving northeast at 15 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. This storm will remain over mainly rural areas of Gila County. This includes US Highway 60 between mile markers 272 and 297. If outdoors, consider seeking shelter inside a building.

* WHAT...Daily peak heat index values around 105 degrees. * WHERE...Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...From 11 AM CDT /noon EDT/ Tuesday to 7 PM CDT /8 PM EDT/ Wednesday. * 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...Daily peak heat index values around 105 degrees. * WHERE...Portions of western Kentucky and southeast Missouri. * WHEN...Until 7 PM CDT Wednesday. * 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...Heat index values up to 108 expected. * WHERE...A portion of Middle Tennessee. * WHEN...From 11 AM Tuesday to 8 PM CDT Wednesday. * 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 degrees expected. * WHERE...Portions of East Arkansas, North Mississippi, Southeast Missouri, and West Tennessee. * WHEN...Until 7 PM CDT Tuesday. * 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.