Moderate

* WHAT...Visibility below one quarter mile in dense fog. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until noon MDT today. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Be prepared for sudden drops in visibility and slick icy roadways on bridges and overpasses.

* WHAT...West winds 25 to 35 mph with gusts up to 55 mph. * WHERE...Southwest corner of Imperial County. * WHEN...Until 11 PM PDT this evening. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. Light, unsecured objects may become airborne. A Wind Advisory means that sustained wind speeds of between 30 and 40 mph are expected, or wind gusts of between 40 and 58 mph. Winds this strong can make driving difficult, especially for high profile vehicles.

* WHAT...West winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...Western portion of Joshua Tree National Park, Southeastern Imperial County, Western Imperial County, Salton Sea, Chuckwalla Mountains, Imperial Valley, and Chiriaco Summit. * WHEN...Until 5 AM PDT early this morning. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. Light, unsecured objects may become airborne. A Wind Advisory means that sustained wind speeds of between 30 and

* WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph this morning, decreasing to 20 to 30 mph with gusts to 40 to 45 mph in the afternoon. * WHERE...Morongo Basin and Western Mojave Desert. * WHEN...Until 5 PM PDT this afternoon. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high-profile vehicles. Use extra caution. Secure outdoor objects.

At 254 AM CDT, Doppler radar was tracking a strong thunderstorm near Marietta, moving east at 25 mph. HAZARD...Wind gusts up to 50 mph and nickel 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... Marietta and southern Lake Murray. If outdoors, consider seeking shelter inside a building.

Dense fog has formed across many of the mountain valleys in southwestern Virginia and southern West Virginia this morning. Visibility will be restricted with any fog and could be as low as half a mile or less in spots. Exercise caution traveling this morning. Slow down, use low beam headlights, and leave extra room between other vehicles.

* WHAT...Sub-freezing temperatures as low as 23. * WHERE...Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.

Patches of dense fog have formed in the New River Valley, Mountain Empire and Greenbrier Valley early this morning. At times visibility has been reduced to less than a quarter mile. If traveling, use caution in foggy areas, slow down and leave extra distance between vehicles.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of south central and southwest Georgia. * WHEN...Until 9 AM EDT 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.

The combination of clear skies and light winds following the recent rainfall has led to widespread fog formation. The fog will likely be dense in valleys and areas where the rain was heavier on Saturday. This fog will dissipate by 10 AM. If traveling this morning, slow down, use low beam headlights, and allow plenty of time to reach your destination.