Moderate

At 326 AM CDT, Doppler radar was tracking a strong thunderstorm 6 miles northeast of Hoxie, moving northeast at 40 mph. HAZARD...Wind gusts of 50 to 55 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. This storm will remain over mainly rural areas of northeastern Sheridan County, including the following locations... Tasco and Studley. If outdoors, consider seeking shelter inside a building.

* WHAT...West winds to 35 mph with gusts up to 55 mph expected. * WHERE...Much of northwest and north central North Dakota. * WHEN...From 10 AM CDT /9 AM MDT/ this morning to 7 PM CDT /6 PM MDT/ this evening. * IMPACTS...Objects left unsecured outside will be blown around. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

* WHAT...West winds to 30 mph with gusts up to 50 mph expected. * WHERE...Eastern McLean, Mercer, Sheridan, Western McLean, and Dunn Counties. * WHEN...From 10 AM CDT /9 AM MDT/ this morning to 7 PM CDT /6 PM MDT/ this evening. * IMPACTS...Objects left unsecured outside will be blown around. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

At 1249 AM MST, Doppler radar was tracking a strong thunderstorm over Phoenix Mesa Gateway Airport, or near Gilbert, moving north 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 damage to outdoor objects is possible. Locations impacted include... Mesa, Gilbert, Apache Junction, East Mesa, Gold Canyon, Queen Creek, Chandler Heights, Gold Camp, Lost Dutchman State Park, Goldfield,

* WHAT...Heat index values up to 103 expected. * WHERE...Portions of northwest and west central Illinois, east central and southeast Iowa, and northeast Missouri. * WHEN...From 1 PM this afternoon to 7 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Thunderstorms and storm outflow may interrupt the heat at times. 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 100-103 degrees. * WHERE...Portions of central and south central Iowa, including the Des Moines metro. * WHEN...From 1 PM this afternoon to 7 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...While heat index values may not reach 105 degrees each day, the combination of the longevity of the heat and little or limited relief during the overnight periods with warm lows have prompted the multi-day Heat Advisory.

At 257 AM CDT, Doppler radar was tracking a strong thunderstorm 4 miles west of Russell Springs, or 24 miles northwest of Scott State Lake, moving northeast at 35 mph. HAZARD...Wind gusts of 50 to 55 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 outdoor objects is possible. Locations impacted include... Monument. If outdoors, consider seeking shelter inside a building.

At 1259 AM MST, Doppler radar was tracking an area of strong thunderstorms near Munds Park, or 14 miles northeast of Sedona, moving northeast at 20 mph. These storms are impacting portions of Interstate 17 and State Route 89A. HAZARD...Heavy rainfall, wind gusts of 50 to 55 mph and pea 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...

At 258 AM CDT, Doppler radar was tracking a strong thunderstorm 4 miles east of Menlo, or 11 miles west of Hoxie, moving northeast at 40 mph. HAZARD...Wind gusts of 50 to 55 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 outdoor objects is possible. This storm will remain over mainly rural areas of central Sheridan County, including the following locations... Seguin.

* WHAT...Visibility of one quarter mile or less in dense fog. * WHERE...Carlton and South St. Louis County. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.