Moderate

* 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, west, and south facing reefs of Guam, Rota, Tinian and Saipan. * 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. * ADDITIONAL DETAILS...Elevated swells coming from the southwesterly

* WHAT...High temperatures up to 104 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, Sierra Nevada foothills, and Coastal West Hills. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Moderate to major risk of heat-related

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Lowlands of Lewis and Southern Thurston Counties. * WHEN...Until 11 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...Visibility one quarter mile or less in dense fog. * WHERE...Foothills and Valleys of the North Cascades, Island County, Lowlands of Western Skagit and Northwestern Snohomish Counties, Lowlands of Western Whatcom County, Downtown Everett / Marysville Area, and Shoreline / Lynnwood / South Everett Area. * WHEN...Until 11 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.

The National Weather Service in Phoenix has issued a * Dust Advisory for... Maricopa County in south central Arizona... Pinal County in southeastern Arizona... * Until 1145 AM MST. * At 950 AM MST, a dust channel was located along SR-347 just south of Riggs Rd, and was stationary. HAZARD...Less than one mile visibility. SOURCE...Trained spotters reported. IMPACT...Hazardous travel. * Locations impacted include... Mainly rural areas of Maricopa and Pinal Counties. This includes AZ Route 347 between mile markers 181 and 185.

Webcam and surface weather observations along the northern and central Oregon coast from 9:45 AM PDT this morning showed fog beginning to lift for most locations, resulting in improving visibilities. Although patchy dense fog is still occurring, fog is no longer widespread enough to warrant a Dense Fog Advisory. Therefore, the Dense Fog Advisory will be allowed to expire at 10 AM PDT this morning.

* WHAT...For the High Rip Current Risk, dangerous rip currents. For the Coastal Flood Advisory, minor coastal flooding expected. * WHERE...In Alabama, Mobile Coastal and Baldwin Coastal Counties. In Florida, Escambia Coastal, Santa Rosa Coastal and Okaloosa Coastal Counties. * WHEN...For the High Rip Current Risk, through Monday evening. For the Coastal Flood Advisory, from midnight tonight to 8 AM CDT Monday. * IMPACTS...Flooding of lots, parks, and roads with only

A system moving through the area is bringing with it periods of snow and rain to Isabel Pass. Warming weather during the morning will see snow change over to rain during daytime hours. Cooling conditions overnight will lead to refreezing of previous snow-melt and rain on roadways, creating particularly slick and slippery conditions.

* WHAT...Wintry mix of snow, sleet, and freezing rain. Total snow accumulations of 2 to 4 inches. Light glaze ice accumulation possible. * WHERE...Central Copper Valley, Ernestine, Southern Copper Valley, and Western Copper Valley. * WHEN...Until 10 AM AKDT this morning. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...Snow will continue across the southern Copper River Basin this morning. The snow may briefly change to a wintry mix of snow, sleet, and freezing rain before southerly winds

* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. * WHERE...All of Puerto Rico, including Vieques and Culebra, and the US Virgin Islands. * WHEN...Until 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