Moderate

* WHAT...Areas of visibility one half mile or less in dense fog. * WHERE...Grays Harbor County Coast, Lower Chehalis River Valley, Middle Chehalis River Valley, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Thurston and Lewis Counties, Lowlands of Lewis and Southern Thurston Counties, Lowlands of Pierce and Southern King Counties, Olympia and Southern Puget Sound, and Willapa and Black Hills. * WHEN...Until noon PDT today.

* WHAT...Areas of visibility one half mile or less in dense fog. * WHERE...Eastern Strait of Juan de Fuca and Western Strait of Juan de Fuca. * WHEN...Until noon PDT today. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Areas of fog, some locally dense, have developed early this morning, resulting in roadway visibility of less than one mile. Morning commuters should expect to encounter areas of rapidly changing visibility. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If walking or cycling, wear bright or reflective clothing and carry a light to increase your visibility to drivers.

At 723 AM EDT/623 AM CDT/, Doppler radar was tracking a strong thunderstorm 7 miles north of Lynn Haven, moving northeast at 20 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Bayhead, Southport, Fountain, Singer Road, Recota Beach, Saunders, Greenhead, Camp Flowers, Gainer Spring, Bennett, Youngstown, Porter Lake, Vicksburg, and Riverside.

* WHAT...Areas of visibility one half mile or less in dense fog. * WHERE...Grays Harbor County Coast, Lower Chehalis River Valley, Middle Chehalis River Valley, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Thurston and Lewis Counties, Lowlands of Lewis and Southern Thurston Counties, Lowlands of Pierce and Southern King Counties, Olympia and Southern Puget Sound, and Willapa and Black Hills. * WHEN...Until noon PDT today.

* WHAT...Areas of visibility one half mile or less in dense fog. * WHERE...Island County, Lowlands of Western Skagit and Northwestern Snohomish Counties, San Juan County, and Downtown Everett / Marysville Area. * WHEN...Until noon PDT today. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Localized dense fog with visibilities dropping below one-quarter of a mile has formed. The fog is patchy but locally very dense, so sudden drops in visibilities when traveling our expected. Motorists should use extreme caution when driving this morning. Reduce speed, leave extra travel time and following distance, and use low beam headlights.

Some patchy dense fog will restrict visibilities to one-half to one-quarter of a mile across parts of north Georgia. The fog should lift after 10 AM. If driving this morning, slow down, use low-beam headlights and leave extra distance between you and the vehicle in front of you.

* WHAT...High temperatures up to 102 degrees expected. Overnight lows between 70 and 75 degrees expected in the Sierra Foothills where the thermal belt is strongest. * WHERE...San Joaquin Valley, Sierra Nevada foothills, and Coastal West Hills. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Moderate to major risk of heat-related illnesses for much of the population, especially those without effective cooling or hydration.

* WHAT...Minor coastal flooding and dangerous rip currents expected due to the combination of high tides and elevated surf. * WHERE...San Diego and Orange County Coastal Areas. * WHEN...From Tuesday afternoon through Friday evening. * IMPACTS...Minor coastal flooding and minor coastal erosion is possible during high tides, most likely during the evenings. * ADDITIONAL DETAILS...Elevated surf of 3-5 feet on south and southwest-facing beaches. High tides are expected to peak between 6.5 and 7.0 feet during the evenings.