Moderate

* WHAT...West winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...West Side Mountains north of 198 including San Luis Reservoir. * WHEN...Until 2 AM PDT Monday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

* WHAT...Southwest winds 15 to 25 mph with gusts up to 45 mph. * WHERE...Buena Vista, Coalinga - Avenal, and West Side Mountains South of 198. * WHEN...Until 2 AM PDT Monday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Includes areas mainly west of Interstate 5. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Codington, Day, Deuel, Grant, Marshall, and Roberts Counties. * WHEN...Until 1 PM CDT this afternoon. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...A very long period westerly swell will increase the threat of sneaker waves. * WHERE...Coastal Del Norte, Northern Coastal Humboldt, Southwestern Humboldt and Coastal Mendocino Counties. * WHEN...Through Monday afternoon. The risk will increase as winds weaken. * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker waves can also move large objects such as logs, crushing anyone caught underneath.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Cheatham, Davidson, Giles, Marshall, Maury, Montgomery, Robertson, and Williamson Counties. * WHEN...Until 10 AM CDT 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...A portion of Middle Tennessee. * WHEN...Until 10 AM CDT 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...Portions of east central and southeast Indiana and northern Kentucky. * WHEN...Until 11 AM EDT 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...Butler, Clermont, Hamilton, and Preble Counties. * WHEN...Until 11 AM EDT 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.

As low clouds begin to clear overnight, conditions for fog development will become more favorable. Some dense fog is possible and may result in visibility of one quarter mile or less. Motorists should be prepared for rapid changes in visibility. Allow for greater distances between vehicles, use low beam headlights, and allow extra time to reach your destination.

If traveling through these areas this morning, be prepared for fog that could suddenly reduce visibilities to 1/4 mile or less. Expect the fog to dissipate after daybreak. Slow down and allow extra time to reach your destination.