Moderate

Surface observations and local webcams indicate that areas of dense fog have developed across portions of inland northeast and north central Florida this morning. Visibilities will be reduced below one half mile locally through the early morning hours. Fog is expected to dissipate during the mid-morning hours. If driving, slow down and leave extra distance ahead of you in case a sudden stop is needed.

At 432 AM MST, Doppler radar was tracking a line of strong thunderstorms extending from over Heber-Overgaard to 7 miles southeast of Red Top Mountain, or extending from 13 miles northeast of Forest Lakes to 13 miles southwest of Show Low, moving northeast 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 damage to outdoor objects is possible. Locations impacted include...

There are patches of dense fog over portions of the Coastal Plain early this morning. The fog is expected to burn off by 900 AM. Until then, use caution as visibilities will be lower than 50 yards in low lying areas.

Patchy dense fog is developing across portions of the Midlands and CSRA, this morning with visibilities at or below a half a mile at times. Motorists driving this morning should make sure to allow for extra driving time to reach your destination.Expect improvements in visibility by 9 am.

* WHAT...Heat index values up to 103 expected. * WHERE...Portions of east central and northeast Kansas and central, north central, northeast, northwest, and west central Missouri. * WHEN...From noon today 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 each day, the combination of the longevity of the heat and little or limited relief during overnight periods have prompted the multi-day Heat Advisory.

At 203 AM MST, Doppler radar was tracking strong thunderstorms along a line extending from Punkin Center to near Four Peaks to 7 miles south of Apache Lake. Movement was northeast at 15 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... Sunflower, Roosevelt, Miami, Top Of The World, Punkin Center,

The combination of hot temperatures and humidity levels will produce heat index values between 105 and 110 degrees for several hours this afternoon into this evening. A few locations may briefly experience heat index values at or above 111 degrees. If spending 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 329 AM CDT, Doppler radar was tracking a strong thunderstorm near Oakley, moving northeast at 45 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 strong thunderstorm will be near... Oakley around 335 AM CDT. This includes Interstate 70 in Kansas between mile markers 64 and 92. If outdoors, consider seeking shelter inside a building.

* WHAT...West winds 20 to 35 mph with gusts up to 45 mph expected. * WHERE...Benson, Cavalier, Eastern Walsh, Grand Forks, Nelson, Pembina, Ramsey, Towner, and Western Walsh Counties. * WHEN...From noon today to 7 PM CDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

Fog is widespread across the region this morning, extending beyond the typical river valleys. The most dense fog is spread across St. Lawrence County and in northern Vermont. Give extra time to get to your destination. Avoid using high beams and adjust speeds to give space and time to react as needed within areas of thick fog.