Moderate

* WHAT...Visibility as low as one quarter to one half mile in dense fog. * WHERE...Portions of southwest Iowa and east central, northeast, and southeast Nebraska. * 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.

* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Benton, Iowa, Johnson, Linn, Buchanan, Delaware, Henry IA, Lee, and Washington Counties. * WHEN...Until 9 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 one quarter to one half mile in dense fog. * WHERE...Jefferson, Keokuk, and Van Buren Counties. * WHEN...Until 9 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 one quarter mile or less in dense fog. * WHERE...In Colorado, Yuma County. In Kansas, Cheyenne KS, Decatur, Graham, Norton, and Rawlins Counties. In Nebraska, Dundy, Hitchcock, and Red Willow Counties. * WHEN...Until 9 AM MDT /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.

* WHAT...Heat index values up to 107. * WHERE...Portions of East Arkansas, North Mississippi, Southeast Missouri, and West Tennessee. * WHEN...Until 8 PM CDT Saturday. * 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 and rough surf expected. * WHERE...Southeast Georgia and Northeast Florida Beaches. * WHEN...Through late tonight. * 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 less than 1/2 mile in dense fog. * WHERE...Buena Vista, Cherokee, and Ida 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.

At 200 AM EDT, Doppler radar was tracking a strong thunderstorm over Upland, moving southeast at 25 mph. HAZARD...Winds in excess of 30 mph and pea size hail. A funnel cloud is also possible. 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... Hartford City, Gas City, Upland, Shamrock Lakes, and Arcana. This includes Interstate 69 in Indiana between mile markers 256 and 260.

* 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.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Colorado, Yuma County. In Kansas, Cheyenne KS and Graham Counties. In Nebraska, Dundy County. * WHEN...Until 9 AM MDT /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.