Moderate

* WHAT...Visibility as low as one quarter mile in dense fog. * WHERE...Central Copper Valley and Western Copper Valley. * WHEN...Until 10 AM AKDT Monday. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...Fog, in combination with temperatures near freezing, may result in slippery road conditions and patchy black ice. 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.

* WHAT...West winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Central Piscataquis, Northern Penobscot, Southeast Aroostook, Northeast Aroostook, Northwest Aroostook, Northern Somerset, and Northern Piscataquis Counties. * WHEN...From 8 AM to 5 PM EDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Strong winds will also create wind chills as low as 10 to 20 degrees on mountain tops

Widespread fog has formed across many of the river and mountain valleys across the State of West Virginia and far western Virginia. Some of the fog may be dense, with visibilities falling to one-quarter mile or less. Fog will last into the morning commute. Slow down, use low beam headlights, and keep extra distance between your vehicle and other vehicles. Fog will begin to dissipate by about 9 AM EDT this morning.

* WHAT...Minor coastal flooding and dangerous rip currents expected due to the combination of high tides and elevated surf. * WHERE...San Diego and Orange County Coastal Areas. * WHEN...From Tuesday afternoon through Friday evening. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore. Moderate flooding of sea water is possibly over

At 1250 AM EDT, Doppler radar was tracking a strong thunderstorm near Sault Ste. Marie, moving east at 30 mph. HAZARD...Wind gusts up to 45 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Sault Ste. Marie, Dafter, Donaldson, Barbeau, Munuscong, Sugar Island, and McCarron. If outdoors, consider seeking shelter inside a building.

* WHAT...Hot conditions with maximum temperatures in the mid-90s to low-100s. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...The East Bay and San Francisco Bay Shoreline, North Bay Interior Mountains and Valleys, The Santa Clara Valley and Eastern Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio.

The threat has ended.

* WHAT...High temperatures up to 105 with overnight temperatures in the 60s. Moderate to localized High HeatRisk. * WHERE...Southern Mendocino Interior, and Southern Lake. * WHEN...Until 10 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...High temperatures up to 105 with overnight temperatures in the 60s. Moderate to localized High HeatRisk. * WHERE...Northern Mendocino Interior, and Northern Lake. * WHEN...Until 10 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.

Areas of locally dense fog will persist along portions of the Glenn and Richardson Highways, especially from Glennallen west to Mendeltna, this evening through early Monday morning. Periods of a wintry mix of precipitation are also expected across the Copper River Basin through Monday morning. With temperatures around freezing for most locations, any precipitation may fall as a mix of rain, snow, and freezing drizzle. Little to no significant snow and ice accumulation is expected. However, the