Moderate

Patchy to more widespread fog development will be possible through sunrise this morning. At times the fog could become dense, restricting visibilities to less than a half to a quarter of a mile in areas. The fog should lift after by 9 AM. While driving this morning, be alert for rapid changes in visibilities over short distances. Be sure to slow down, use low-beam headlights, and leave extra distance between you and the vehicle in front of you.

* WHAT...Hot conditions with maximum temperatures in the mid-90s to near 105. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...The East Bay and San Francisco Bay Shoreline, North Bay Interior Mountains and Valleys, The Santa Clara Valley and Eastern Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio.

* WHAT...Dangerous rip currents expected. * WHERE...In Alabama, Mobile Coastal and Baldwin Coastal Counties. In Florida, Escambia Coastal, Santa Rosa Coastal and Okaloosa Coastal Counties. * WHEN...Through late Saturday night. * 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

Some patchy dense fog will restrict visibilities to one-half to one- quarter of a mile across parts of north and central Georgia. The fog should lift after 9 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 of 95 to 105 with overnight temperatures in the high 50s and 60s. Moderate to localized Major HeatRisk. * WHERE...Mendocino Interior, and Lake County. * WHEN...Until 10 PM PDT Thursday. * 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 less than one quarter mile in patchy dense fog. * WHERE...Del Norte and Northern Humboldt Coast. Fog will be patchy and visibility may change dramatically. * WHEN...Until 5 AM PDT early this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Allow extra time to reach your destination. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Strong north to south longshore current. There is also a Moderate Risk of rip currents expected along the coastal Pender, New Hanover, and Georgetown County beaches. * WHERE...In North Carolina, Coastal Pender and Coastal New Hanover Counties. In South Carolina, Coastal Horry and Coastal Georgetown Counties. * WHEN...Today. * IMPACTS...Longshore currents can sweep swimmers and surfers into rip currents, piers, jetties, and other hazardous areas.

* WHAT...Dangerous rip currents. * WHERE...Walton, Bay, Gulf, and Franklin County 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...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Rip Current Risk, dangerous rip currents expected. For the High Surf Advisory, large breaking waves of 5 to 7 feet. * WHERE...Southeast Georgia Beaches. * WHEN...For the Coastal Flood Advisory, from 8 AM this morning to 5 AM EDT Thursday. For the High Rip Current Risk, from 8 AM EDT this morning through late Wednesday night. For the High Surf Advisory, from 5 PM this afternoon to 5 AM EDT Thursday.

* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Rip Current Risk, dangerous rip currents expected. For the High Surf Advisory, large breaking waves of 6 to 8 feet. * WHERE...Northeast Florida Beaches. * WHEN...For the Coastal Flood Advisory, from noon today to 5 AM EDT Thursday. For the High Rip Current Risk, from noon EDT today through late Wednesday night. For the High Surf Advisory, from 5 PM this afternoon to 5 AM EDT Thursday.