California weather alerts

* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 29 expected. For the Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...Trinity County, Northern Mendocino Interior, and Northern Lake. * WHEN...From 1 AM to 8 AM PDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.

* WHAT...Sub-freezing temperatures as low as 30 possible. * WHERE...Northern Owens Valley. * WHEN...Cancelled for Monday Night into Tuesday Morning... Reissued for Tuesday Night into Wednesday Morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Increased cloud cover will remain persistent through the start of the overnight period tonight along with elevated gusty winds ahead of an incoming cold front. As a result, temperatures in the northern Owens Valley are likely to remain above-freezing tonight. The Freeze Watch has been pushed back to Tuesday night into Wednesday morning, when winds will be lighter and skies will be clear.

Take steps now to protect tender plants from the cold. To prevent water pipes from freezing; wrap or drain or allow them to drip slowly.

* WHAT...Increased risk of rip currents and sneaker waves expected with breaking waves up to 16 feet. * WHERE...Coastal North Bay Including Point Reyes National Seashore and San Francisco Peninsula Coast Counties. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves.

Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.

* WHAT...For the Coastal Flood Advisory, up to 1.4 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, increased risk of rip currents and sneaker waves expected with breaking waves up to 16 feet. * WHERE...San Francisco, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...For the Coastal Flood Advisory, until 3 PM PDT Tuesday. For the Beach Hazards Statement, until 10 PM PDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. High tides will result in flooding along coastal trails, cut off access to some low- lying beaches and coastal areas, and bring water and waves farther up the beach than typical. Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.4 ft above normal (7.2 ft MLLW) at 1:14 PM Tuesday 10/13. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.

* WHAT...For the Beach Hazards Statement, dangerous rip currents and elevated surf are expected. For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. * WHERE...Ventura County Beaches. * WHEN...For the Coastal Flood Advisory, until 2 PM PDT Tuesday. For the Beach Hazards Statement, through Tuesday afternoon. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at low-lying beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is possible. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening. * ADDITIONAL DETAILS...High tides are expected to peak around 7.1 to 7.3 feet on Tuesday morning.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.

* WHAT...For the Beach Hazards Statement, dangerous rip currents and elevated surf are expected. For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. * WHERE...Malibu Coast and Los Angeles County Beaches. * WHEN...For the Coastal Flood Advisory, until 2 PM PDT Tuesday. For the Beach Hazards Statement, through Tuesday afternoon. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at low-lying beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is possible. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening. * ADDITIONAL DETAILS...High tides are expected to peak around 7.1 to 7.3 feet on Tuesday morning. A Beach Hazards Statement may be issued on future shifts to follow the Coastal Flood Advisory due to minor tidal overflow from continued elevated tides and surf into at least Thursday.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.

* WHAT...For the Beach Hazards Statement, dangerous rip currents and elevated surf are expected. For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. * WHERE...Santa Barbara County Southwestern Coast and Santa Barbara County Southeastern Coast. * WHEN...For the Coastal Flood Advisory, until 10 PM PDT this evening. For the Beach Hazards Statement, through Tuesday afternoon. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at low-lying beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is possible. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening. * ADDITIONAL DETAILS...High tides are expected to peak around 7.1 to 7.3 feet on Tuesday morning. A Beach Hazards Statement may be issued on future shifts to follow the Coastal Flood Advisory due to minor tidal overflow from continued elevated tides and surf into at least Thursday.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.

* 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 this evening. 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.

Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean.

* WHAT...Up to 1.4 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Pablo Bay. * WHEN...Until 4 PM PDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. High tides will result in flooding along coastal trails, cut off access to some low- lying beaches and coastal areas, and bring water and waves farther up the beach than typical. Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.4 ft above normal (7.2 ft MLLW) at 1:14 PM Tuesday 10/13, and 1.0 ft above normal (6.8 ft MLLW) at 1:46 PM Wednesday 10/14. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

* WHAT...For the Coastal Flood Advisory, up to 1.4 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, increased risk of rip currents and sneaker waves expected with breaking waves up to 16 feet. * WHERE...San Francisco, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...For the Coastal Flood Advisory, until 3 PM PDT Tuesday. For the Beach Hazards Statement, until 10 PM PDT this evening. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. High tides will result in flooding along coastal trails, cut off access to some low- lying beaches and coastal areas, and bring water and waves farther up the beach than typical. Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.4 ft above normal (7.2 ft MLLW) at 1:14 PM Tuesday 10/13. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.

* WHAT...Up to 1.5 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco and Monterey Bays. * WHEN...Until 3 PM PDT Tuesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. High tides will result in flooding along coastal trails, cut off access to some low- lying beaches and coastal areas, and bring water and waves farther up the beach than typical. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.4 ft above normal (7.2 ft MLLW) at 1:14 PM Tuesday 10/13. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

* WHAT...For the Beach Hazards Statement, dangerous rip currents and elevated surf are expected. For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. * WHERE...Malibu Coast and Los Angeles County Beaches. * WHEN...For the Coastal Flood Advisory, until 2 PM PDT Tuesday. For the Beach Hazards Statement, through Tuesday afternoon. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at low-lying beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is possible. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening. * ADDITIONAL DETAILS...High tides are expected to peak around 7.1 to 7.3 feet on Tuesday morning. A Beach Hazards Statement may be issued on future shifts to follow the Coastal Flood Advisory due to minor tidal overflow from continued elevated tides and surf into at least Thursday.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.

* WHAT...Minor to moderate coastal flooding. * WHERE...Catalina and Santa Barbara Islands. * WHEN...Until 2 PM PDT Tuesday. * IMPACTS...Moderate flooding of sea water is likely over some vulnerable low-lying coastal areas, especially around the time of high tide, including over beach parking lots, bike paths, and harbor walkways. Moderate beach erosion is likely. Isolated damage is unlikely but possible across the most vulnerable locations. * ADDITIONAL DETAILS...High tides of around 7.5 feet are expected Tuesday morning. Large secondary high tides are also expected each evening. A Beach Hazards Statement may be issued on future shifts to follow the Coastal Flood Advisory due to minor tidal overflow from continued elevated tides and surf into at least Thursday.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth.

* WHAT...For the Beach Hazards Statement, dangerous rip currents and elevated surf are expected. For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. * WHERE...Ventura County Beaches. * WHEN...For the Coastal Flood Advisory, until 2 PM PDT Tuesday. For the Beach Hazards Statement, through Tuesday afternoon. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at low-lying beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is possible. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening. * ADDITIONAL DETAILS...High tides are expected to peak around 7.1 to 7.3 feet on Tuesday morning.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.

* WHAT...For the Beach Hazards Statement, dangerous rip currents and elevated surf are expected. For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. * WHERE...Santa Barbara County Southwestern Coast and Santa Barbara County Southeastern Coast. * WHEN...For the Coastal Flood Advisory, until 10 PM PDT this evening. For the Beach Hazards Statement, through Tuesday afternoon. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at low-lying beach and harbor areas that is uncommon with normal tidal ranges. Enhanced beach erosion is possible. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening. * ADDITIONAL DETAILS...High tides are expected to peak around 7.1 to 7.3 feet on Tuesday morning. A Beach Hazards Statement may be issued on future shifts to follow the Coastal Flood Advisory due to minor tidal overflow from continued elevated tides and surf into at least Thursday.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.

* WHAT...For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. For the High Surf Advisory, large breaking waves of 8 to 12 feet is expected with dangerous rip currents. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at beach and harbor areas that is uncommon with normal tidal ranges. Low lying areas will be most susceptible, including Oceano. Enhanced beach erosion is likely. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to dangerous surf conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.

* WHAT...Minor coastal flooding due to morning high tides around 7 feet in combination with surf 3-6 feet, with local sets to 7 feet. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Until 2 PM PDT Tuesday. * IMPACTS...Flooding of lots, parks, and roads during morning high tides with only isolated road closures expected. * ADDITIONAL DETAILS...Highest high tide will occur between 10 AM and 11 AM Tuesday. High tide will fall below 7 ft by Wednesday and below 6.5 ft after Thursday's highest high tide.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 29 expected. For the Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...Trinity County, Northern Mendocino Interior, and Northern Lake. * WHEN...From 1 AM to 8 AM PDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.

* WHAT...Temperatures as low as 33 can result in frost formation. * WHERE...Humboldt Coast, Southeastern Interior Humboldt, Coastal Mendocino, and Western Lake. * WHEN...From 1 AM to 8 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.

* WHAT...For the Coastal Flood Advisory, minor to moderate coastal flooding can be expected near times of high tide. For the High Surf Advisory, large breaking waves of 8 to 12 feet is expected with dangerous rip currents. * WHERE...San Luis Obispo County Beaches and Santa Barbara County Central Coast Beaches. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Minor to moderate flooding of sea water is likely around high tide at beach and harbor areas that is uncommon with normal tidal ranges. Low lying areas will be most susceptible, including Oceano. Enhanced beach erosion is likely. The risk for significant damage is very low. 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. Large secondary high tides are also expected each evening.

Take the necessary actions to protect flood-prone property. Do NOT drive around barricades or through water of unknown depth. Remain out of the water due to dangerous surf conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks.