Moderate

* WHAT...Dangerous rip currents. * WHERE...In Alabama, Mobile Coastal and Baldwin Coastal Counties. In Florida, Escambia Coastal, Santa Rosa Coastal and Okaloosa Coastal Counties. * WHEN...Through this 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 direction following the shoreline. If unable to escape, face the

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Clay, Cloud, Ottawa, and Riley Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Republic, Washington, Brown, Marshall, and Nemaha Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you.

* WHAT...Dangerous rip currents and rough surf. * WHERE...The beaches of Volusia, Brevard, Indian River, Saint Lucie, and Martin Counties. * WHEN...Through late tonight. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as jetties and piers. Heed the advice of lifeguards, beach patrol flags and

At 1143 PM MDT, Doppler radar was tracking a strong thunderstorm over Magic Valley Regional Airport, or 7 miles south of Twin Falls, moving north at 30 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. Areas of blowing dust reducing visibility. Minor damage to outdoor objects is possible. This strong thunderstorm will be near... Twin Falls and Magic Valley Regional Airport around 1150 PM MDT.

* WHAT...Heat index values up to 109 expected. * WHERE...Portions of central, eastern, north central, southeast, and western Arkansas. * WHEN...From 10 AM this morning to 8 PM CDT this evening. * 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 105. * WHERE...Christian, Sangamon, Shelby, Cumberland, Morgan, and Scott Counties. * WHEN...Until 7 PM CDT this evening. * 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 105. * WHERE...Clay, Crawford, Effingham, Jasper, Lawrence, and Richland Counties. * WHEN...Until 7 PM CDT this evening. * 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...Dangerous rip currents expected. * WHERE...Coastal Palm Beach County. * WHEN...Through Friday morning. * 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 direction following the shoreline. If unable to escape, face the shore and call or wave for help.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Kansas, Decatur, Norton, and Rawlins Counties. In Nebraska, Hitchcock and Red Willow Counties. * WHEN...Until 10 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.