Moderate

Clear skies and light winds have once again led to fog developing mainly in the valleys. Some of this fog will be dense and reduce visibilities to a quarter of a mile or less - generally along the rivers, larger creeks, and area lakes. Look for the fog to start to clear by 9 am. Those traveling this morning should exercise caution by slowing down and being prepared for sudden changes in visibility. Allow plenty of room between your vehicle and the one in front of you.

* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...In Kansas, Decatur, Graham, Norton, Rawlins, Sheridan, and Thomas Counties. In Nebraska, Hitchcock and Red Willow Counties. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility down to one quarter mile in dense fog. * WHERE...Custer, Blaine, Garfield, Loup, Wheeler, Frontier, Hayes, Lincoln, and Logan Counties. * WHEN...Until 10 AM CDT Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Dangerous rip currents expected. * WHERE...In Alabama, Mobile Coastal and Baldwin Coastal Counties. In Florida, Escambia Coastal, Santa Rosa Coastal and Okaloosa Coastal Counties. * WHEN...From Thursday morning through Saturday evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a

* WHAT...Heat index values up to 113 expected. * WHERE...Coastal Kleberg, Coastal Nueces, Coastal San Patricio, Inland Kleberg, Inland Nueces, Inland San Patricio, and Jim Wells Counties. * WHEN...From 1 PM to 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. To reduce risk during outdoor work, the Occupational Safety and

* WHAT...Visibility as low as one quarter of a mile in dense fog. * WHERE...Portions of central, east central, and south central Nebraska as well as Phillips and Smith counties in Kansas. * WHEN...Until 11 AM CDT Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

At 1134 PM CDT, Doppler radar was tracking a strong thunderstorm over Seagraves, moving northeast at 40 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Seagraves, Seagraves Airport, Loop, and Gaines County Park. If outdoors, consider seeking shelter inside a building.

* WHAT...Life threatening waves of 3 to 5 feet and dangerous currents are expected. * WHERE...Sheboygan County. * WHEN...From 10 AM CDT Wednesday through Wednesday evening. * IMPACTS...Dangerous swimming conditions are expected due to high waves and onshore winds. Stay out of the water and away from dangerous areas like piers and breakwalls. Strong structural and longshore currents are expected. Rip currents are possible.

At 1001 PM CDT/901 PM MDT/, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles southeast of Crossroads to 6 miles northeast of Humble City. Movement was northeast at 40 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Lovington, Tatum, McDonald, Humble City, Crossroads, Knowles, Gladiola, and Tatum Airport.

At 951 PM CDT, Doppler radar was tracking a strong thunderstorm 8 miles west of Sanderson, moving northeast at 45 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Sanderson. If outdoors, consider seeking shelter inside a building.