Moderate

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Heat Advisory, hot conditions with maximum temperatures in the low-80s to low-90s. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...Northern Monterey Bay. * WHEN...For the Dense Fog Advisory, until 9 AM PDT this morning. For the Heat Advisory, from 11 AM this morning to 10 PM PDT Sunday. * IMPACTS...For the Dense Fog Advisory, low visibility could make

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Southern Monterey Bay and the Big Sur Coast, and San Francisco Peninsula Coast. * WHEN...Until 9 AM PDT 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...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Heat Advisory, hot conditions with maximum temperatures in the low-80s to low-90s. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...Northern Monterey Bay. * WHEN...For the Dense Fog Advisory, until 9 AM PDT this morning. For the Heat Advisory, from 11 AM this morning to 10 PM PDT Sunday. * IMPACTS...For the Dense Fog Advisory, low visibility could make

* WHAT...High temperatures up to 103 degrees expected with the warmest temperatures will be located in the southern San Joaquin Valley. Overnight lows between 70 and 75 degrees expected in the Sierra Foothills where the thermal belt is strongest. * WHERE...San Joaquin Valley and Sierra Nevada foothills. * WHEN...From 11 AM this morning to 11 PM PDT Tuesday. * 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

* WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Portions of southwest Minnesota and east central South Dakota. * WHEN...From 7 AM this morning to 1 PM CDT 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.

* WHAT...Dangerous rip currents. * WHERE...Walton and Bay County Beaches. * 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 shore and call or wave for help.

* WHAT...Very steep and hazardous seas of 13 to 15 feet expected. * WHERE...Guam and Rota Coastal Waters. * WHEN...Until 5 AM ChST Sunday. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. * ADDITIONAL DETAILS...Winds have diminished enough to allow the Gale Warning to expire. However, an elevated southwesterly monsoon swell will allow hazardous seas to persist through tonight. A hazardous seas warning means hazardous sea conditions are

* WHAT...For the High Surf Advisory, large breaking waves of 7 to 10 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...North, south, and west facing reefs of Guam and Rota. * WHEN...Until 4 PM ChST Monday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. Rip currents will be life threatening. Inexperienced swimmers

* WHAT...For the High Surf Advisory, large breaking waves of 9 to 12 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. For the Coastal Flood Statement, isolated minor coastal flooding. * WHERE...North, south, and west facing reefs of Tinian and Saipan. * WHEN...Until 4 PM ChST Monday. * IMPACTS...Some water on low lying roads and property. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water.

* WHAT...Dangerous rip currents. * WHERE...Coastal Palm Beach County, Coastal Broward County and Coastal Miami Dade County. * WHEN...Through Sunday evening. * 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.