Moderate

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Iowa, Fremont, Mills, Montgomery, and Page Counties. In Nebraska, Gage, Johnson, Nemaha, Otoe, Pawnee, and Richardson 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...Cass, Jefferson, Lancaster, and Saline 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...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE...Mason, Oceana, Muskegon, Ottawa, Allegan and Van Buren counties. * WHEN...Through this evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. South sides of piers will be especially dangerous. Remain out of the water to avoid hazardous swimming conditions

* WHAT...Elevated surf of 3-5 feet with sets to 7 feet expected along with dangerous rip currents and minor coastal flooding. * WHERE...San Diego County coastal areas and Orange County coastal areas, particularly along south and southwest-facing beaches. * WHEN...From early Wednesday morning through Thursday evening. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Flooding of low lying beach parking lots, boardwalks, and roads.

At 301 AM MDT, Doppler radar was tracking a strong thunderstorm over Sidney Municipal Airport, or near Sidney, moving southeast at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Sidney, Colton, Sunol, Brownson, Lorenzo, Sidney Municipal Airport, and Cheyenne County Fairgrounds. If outdoors, consider seeking shelter inside a building.

* WHAT...High temperatures 97 to 102F in the Lewiston-Clarkston Valley resulting in moderate to locally major HeatRisk. * WHERE...Culdesac, Lapwai, Clarkston, Lewiston, and Peck. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Hot temperatures 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...Visibility one quarter of a mile or less in dense fog. * WHERE...Brown, Marshall, and Nemaha Counties. * WHEN...Until 9 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.

At 333 AM CDT, Doppler radar was tracking a strong thunderstorm near Blanchardville, or 11 miles southeast of Dodgeville, moving southeast at 30 mph. HAZARD...Wind gusts up to 40 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 vegetation is possible. Locations impacted include... Monroe, Belleville, New Glarus, Brooklyn, Monticello, Argyle,

At 315 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 6 miles northeast of Selman to 9 miles southeast of Buffalo to 7 miles south of May. Movement was east at 10 mph. HAZARD...Wind gusts of 40 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... Fort Supply, May, and Selman.

* WHAT...High waves and dangerous currents expected. * WHERE...Beaches along Lake Michigan in Door County. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Dangerous swimming conditions are expected. Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS...Several beaches that will be most susceptible to the dangerous swimming conditions include... Rock Island State Beach, Baileys Harbor beaches and Whitefish Dunes Beach in Door County.