Moderate

Fog is lifting and visibilities should improve above one-quarter mile by 10 AM.

At 926 AM EDT, Doppler radar was tracking a strong thunderstorm over Boca Chica Channel Bridge, moving northwest at 20 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Key West, Big Coppitt Key, Boca Chica Channel Bridge, Boca Chica, Fleming Key, Key Haven, Geiger Key, Sunset Key, and Shark Key. This includes US 1 between mile markers 0 and 12. If outdoors, consider seeking shelter inside a building.

* WHAT...For the High Surf Advisory, large breaking waves of 8 to 12 feet expected in the surf zone. For the High Rip Current Risk, dangerous rip currents expected. * WHERE...North, south, and west facing reefs of Guam and Rota. * WHEN...For the High Surf Advisory, until 4 AM ChST Monday. For the High Rip Current Risk, through late Sunday night. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water.

* WHAT...For the High Surf Advisory, large breaking waves of 10 to 14 feet expected in the surf zone. For the Coastal Flood Watch, significant coastal flooding possible. For the High Rip Current Risk, dangerous rip currents expected. * WHERE...North and west facing reefs of Tinian and Saipan. * WHEN...For the High Surf Advisory, until 4 AM ChST Monday. For the Coastal Flood Watch, through Monday evening. For the High Rip Current Risk, through late Sunday night. * IMPACTS...Numerous roads may be closed. Low lying property

* WHAT...For the High Surf Advisory, large breaking waves of 10 to 14 feet expected in the surf zone. For the Coastal Flood Watch, significant coastal flooding possible. For the High Rip Current Risk, dangerous rip currents expected. * WHERE...North and west facing reefs of Tinian and Saipan. * WHEN...For the High Surf Advisory, until 4 AM ChST Monday. For the Coastal Flood Watch, through Monday evening. For the High Rip Current Risk, through late Sunday night. * IMPACTS...Numerous roads may be closed. Low lying property

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Extreme Heat Warning, Dangerously hot conditions with temperatures up to 90 at the coast and 105 in the valleys. * WHERE...Malibu Coast and Ventura County Beaches. * WHEN...For the Dense Fog Advisory, until 10 AM PDT this morning. For the Extreme Heat Warning, from 10 AM this morning to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during

* WHAT...Dangerously hot conditions with temperatures around 90 near the coast to 103 inland. * WHERE...San Luis Obispo County Inland Central Coast, San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, Santa Barbara County Inland Central Coast, Santa Lucia Mountains, Santa Ynez Valley, and Southern Salinas Valley. * WHEN...From 10 AM Saturday to 8 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...Until 10 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 Gale Warning, southwest winds 25 to 35 kt with frequent gusts up to 45 kt and seas 14 to 20 feet expected. For the Hazardous Seas Watch, very steep and hazardous seas 15 feet or greater possible. * WHERE...Guam and Rota Coastal Waters. * WHEN...For the Gale Warning, until 5 PM ChST Saturday. For the Hazardous Seas Watch, from Saturday afternoon through Sunday afternoon. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.

At 728 AM EDT, Doppler radar was tracking a strong thunderstorm near Sugarloaf Key, or near Niles Channel Bridge, moving northwest at 25 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Niles Channel Bridge, Big Coppitt Key, Saddlebunch Keys, Bay Point, Shark Key, Upper Sugarloaf Key, Summerland Key, Cudjoe Key, and Sugarloaf Key. This includes US 1 between mile markers 11 and 25.