Moderate

* WHAT...High temperatures up to 105 with overnight temperatures in the 60s. Moderate to localized High HeatRisk. * WHERE...Mendocino Interior, and Lake County. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Moderate to localized high HeatRisk will increase the potential for 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...Dangerous rip currents expected. * WHERE...South Carolina Beaches, and Georgia Beaches. * WHEN...From Tuesday morning through Tuesday evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...High surf with breaking waves of 4 to 6 feet along the lower South Carolina coast and 5 to 7 feet along the Georgia coast will occur. The combination of strong northeast winds, elevated tides and large breaking waves will

* 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...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 10 PM PDT Friday. * 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.

At 120 PM AST, Doppler radar was tracking a strong thunderstorm over San Sebastian, moving northwest at 10 mph. HAZARD...Wind gusts up to 40 mph and frequent lightning. Funnel clouds are possible. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Moca, San Sebastian, Isabela, Aguadilla, Aceitunas, Hato Arriba, Caban, San Antonio, Mora and Rafael Hernandez.

At 100 PM AST, Doppler radar was tracking a strong thunderstorm over La Alianza, or near Florida, moving northwest at 10 mph. HAZARD...Wind gusts up to 40 mph and frequent lightning. Funnel clouds are possible. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Arecibo, Hatillo, Camuy, Florida, Barceloneta, Quebradillas,

* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Northeast Florida Beaches. * WHEN...For the Coastal Flood Advisory, from noon Tuesday to 5 AM EDT Thursday. For the High Rip Current Risk, from Tuesday afternoon through late Wednesday night. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Rip currents can sweep even the best swimmers away from shore into deeper water.

* WHAT...For the Coastal Flood Advisory, minor coastal flooding expected. For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Southeast Georgia Beaches. * WHEN...For the Coastal Flood Advisory, from 8 AM Tuesday to 5 AM EDT Thursday. For the High Rip Current Risk, from Tuesday morning through late Wednesday night. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Rip currents can sweep even the best swimmers away from shore into deeper water.

At 1241 PM EDT, Doppler radar was tracking gusty showers near West Sand Lake, or near Troy, moving east at 50 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... Troy, Pittsfield, East Greenbush, North Adams, Rensselaer, Nassau, Adams, Williamstown, Cheshire, Stephentown, Grafton, Berlin, Florida, Hancock, Savoy, New Ashford, West Sand Lake, Averill Park, Center Brunswick, and Wyantskill.

* WHAT...High temperatures of 94 to 102 degrees expected and overnight low temperatures in the mid 60s to low 70s, with widespread Moderate HeatRisk and areas of Major HeatRisk. * WHERE...The Sacramento and northern San Joaquin Valleys, Delta and Carquinez Strait, and foothills. * WHEN...Until 10 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses, especially to anyone without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Hottest days expected Monday through Wednesday.