Moderate

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.

* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. * WHERE...Puerto Rico and U.S. Virgin Islands. * WHEN...From 10 AM this morning to 4 PM AST this afternoon. * IMPACTS...High temperatures or elevated heat indices can worsen symptoms in people with chronic conditions. They can also increase the risk of heat-related illness among individuals sensitive to heat with inadequate cooling or hydration. These risks are highest

* WHAT...For the High Rip Current Risk, dangerous rip currents expected. For the High Surf Advisory, large breaking waves of 4 to 6 feet expected in the South Carolina surf zone and 5 to 7 feet expected in the Georgia surf zone. * WHERE...South Carolina Beaches, and Georgia Beaches. * WHEN...For the High Rip Current Risk, from 8 AM EDT this morning through this evening. For the High Surf Advisory, from noon today to 2 PM EDT Wednesday. * IMPACTS...Dangerous swimming and surfing conditions and

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central Susitna Valley and Southern Susitna Valley. * WHEN...Until 10 AM AKDT Tuesday. * IMPACTS...Hazardous driving conditions due to low visibility. A dense fog advisory means visibilities will frequently be reduced to less than one quarter mile. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.