Expected

* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 103 degrees at Havasupai Gardens, to 112 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 8 PM MST Thursday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. This warning is reserved for only the hottest days of the year and is

* WHAT...Heat index values up to 112 expected. * WHERE...Coastal Cameron, Coastal Kenedy, Coastal Willacy, Inland Cameron, Inland Kenedy, Inland Willacy, Northern Hidalgo, Southern Hidalgo, and Starr Counties. * WHEN...From 1 PM 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. Take extra precautions when outside. Wear lightweight and loose

At 1112 PM CDT, Doppler radar was tracking a strong thunderstorm 7 miles south of Little Bend Rec Area, or 22 miles northwest of Fort Pierre, moving southeast at 60 mph. HAZARD...Wind gusts of 50 to 55 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... Pierre, Fort Pierre, Blunt, Spring Creek Rec Area, Grey Goose,

* AFFECTED AREA...In Colorado, Fire Weather Zone 203 Lower Colorado River and Fire Weather Zone 205 Colorado River Headwaters below 8000 feet. * TIMING...From noon to 9 PM MDT Wednesday. * WINDS...West 10 to 20 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...8 to 13 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of

* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little Snake Forecast Area, Fire Weather Zone 201 Routt Forecast Area, Fire Weather Zone 202 White River Forecast Area, Fire Weather Zone 207 Southwest Colorado Lower Forecast Area, Fire Weather Zone 290 Paradox Valley Forecast Area, Fire Weather Zone 291 Northern San Juan Forecast Area, Fire Weather Zone 292 North Fork Forecast Area, Fire Weather Zone 293 Gunnison Basin Forecast Area and Fire Weather Zone 294 Southwest

* AFFECTED AREA...In Colorado, Fire Weather Zone 295 Southwest Colorado Upper East Forecast Area below 9000 feet. * TIMING...From noon to 9 PM MDT Wednesday. * WINDS...West 10 to 15 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...8 to 13 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of

* WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Portions of south central and southwest North Dakota. * WHEN...From 7 AM CDT /6 AM MDT/ to 7 PM CDT /6 PM MDT/ Wednesday. * IMPACTS...Things left unsecured outside will be blown around. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

At 1030 PM CDT/930 PM MDT/, trained weather spotters reported a strong thunderstorm near Bear Creek, or 7 miles northeast of Lantry, moving southeast at 55 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Trained weather spotters. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Eagle Butte, Lantry, Green Grass, Mission Ridge, Bear Creek, Little Bend Rec Area, Parade, Cheyenne River Reservation, and southern Lake Oahe.

At 1036 PM CDT, Doppler radar was tracking a strong thunderstorm 5 miles east of Madison, moving southeast at 25 mph. HAZARD...Strong 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. Hail damage to outdoor objects and vegetation is possible. Locations impacted include... Gridley. If outdoors, consider seeking shelter inside a building.

The National Weather Service in North Platte has issued a Red Flag Warning for low relative humidity and gusty winds, which is in effect from noon CDT /11 AM MDT/ to 9 PM CDT /8 PM MDT/ Wednesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 204 Eastern Panhandle/Crescent Lake NWR, Fire Weather Zone 206 Sandhills/Valentine NWR/Nebraska National Forest, Fire Weather Zone 208 Niobrara Valley/Fort Niobrara NWR/Samuel R McKelvie