Reporting Station : San Francisco International Airport, CA

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High Surf Warning

Broadcast Time 10/22/2021 14:18 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/22/2021 14:18 PDT
Issuing Time 10/22/2021 14:18 PDT Valid Until 10/26/2021 11:00 PDT

TWO SEPARATE PROGRESSIVELY LARGER SWELL TRAINS WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. .A pair of strong, early season storm systems will result in coastal hazards between today and next Tuesday. The first of these storm systems is impacting the region today and has already generated an area of heightened wave energy. Buoys along our coast has reported a modest uptick in wave height and period and cams show some of this increased energy now arriving at the coast. Large breaking waves of 15 to 20 feet, increased risk of longshore and rip currents, and enhanced coastal runup are all possible through the remainder of the day as this intermittent wave energy washes ashore, especially at west facing beaches. A high surf advisory is in effect until 11 PM this evening due to this threat. Then, a very strong atmospheric river storm system will move through the region late this weekend into early next week. Very large, long period swell is expected to be generated from this storm as it passes. This wave energy will then transition through the coastal waters from late Sunday into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the largest swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING. . HIGH SURF WARNING IN EFFECT FROM 11 PM SUNDAY TO 11 AM PDT TUESDAY. * WHAT. For today`s High Surf Advisory, intermittent large breaking waves of 15 to 20 feet, increased coastal run up, stronger rip currents and longshore currents. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of coastal run up and minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. For the High Surf Advisory, until 11 PM PDT this evening. For the High Surf Warning, from 11 PM Sunday to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS. Today`s high surf advisory is for moderately large intermittent risks and should not downplay the expected risk arriving during the high surf warning. The high surf warning will see much stronger wave action and coastal threats, especially on Monday.

High Surf Warning

Broadcast Time 10/22/2021 22:58 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/22/2021 22:58 PDT
Issuing Time 10/22/2021 22:58 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. .Strong, early season storm systems will result in coastal hazards returning next Tuesday. A very strong atmospheric river and storm system will move through the region late this weekend and early next week. Very large, long period swell will accompany this storm as it passes. This wave energy will transition through the coastal waters from late Sunday into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the largest swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT FROM 11 PM SUNDAY TO 11 AM PDT TUESDAY. . HIGH SURF ADVISORY WILL EXPIRE AT 11 PM PDT THIS EVENING. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of coastal run up and minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. For the High Surf Warning, from 11 PM Sunday to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS. The high surf warning will bring strong wave action and coastal threats, especially on Monday.

High Surf Warning

Broadcast Time 10/22/2021 23:02 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/22/2021 23:02 PDT
Issuing Time 10/22/2021 23:02 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. .Strong, early season storm systems will result in coastal hazards returning late in the weekend and early next week. A very strong atmospheric river and storm system will move through the region late this weekend and early next week. Very large, long period swell will accompany this storm as it passes. This wave energy will transition through the coastal waters from late Sunday into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the largest swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT FROM 11 PM SUNDAY TO 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of coastal run up and minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. For the High Surf Warning, from 11 PM Sunday to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS. The high surf warning will bring strong wave action and coastal threats, especially on Monday.

High Surf Warning

Broadcast Time 10/23/2021 04:48 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/23/2021 04:48 PDT
Issuing Time 10/23/2021 04:48 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. .Strong, early season storm systems will result in coastal hazards returning late in the weekend and early next week. A very strong atmospheric river and storm system will move through the region late this weekend and early next week. Very large, long period swell will accompany this storm as it passes. This wave energy will transition through the coastal waters from late Sunday into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the largest swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT FROM 11 PM SUNDAY TO 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of coastal run up and minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. For the High Surf Warning, from 11 PM Sunday to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS. The high surf warning will bring strong wave action and coastal threats, especially on Monday.

High Surf Warning

Broadcast Time 10/23/2021 12:27 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/23/2021 12:27 PDT
Issuing Time 10/23/2021 12:27 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. .A strong, early season storm system arrives tomorrow and will result in significantly increased wave energy from late Sunday into early Tuesday as it arrives and after it passes. This wave energy will transition through the coastal waters from late Sunday into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT FROM 11 PM SUNDAY TO 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. For the High Surf Warning, from 11 PM Sunday to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected.

High Surf Warning

Broadcast Time 10/23/2021 21:06 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/23/2021 21:06 PDT
Issuing Time 10/23/2021 21:06 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. A strong, early season storm system arrives today and will result in significantly increased wave energy from late today into early Tuesday. This wave energy will transition through the coastal waters from late today into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. For the High Surf Warning, from 11 PM this evening to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected.

High Surf Warning

Broadcast Time 10/24/2021 04:25 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/24/2021 04:25 PDT
Issuing Time 10/24/2021 04:25 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. A strong, early season storm system arrives today and will result in significantly increased wave energy from late today into early Tuesday. This wave energy will transition through the coastal waters from late today into Tuesday, and peak on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. For the High Surf Warning, from 11 PM this evening to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected.

High Surf Warning

Broadcast Time 10/24/2021 13:46 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/24/2021 13:46 PDT
Issuing Time 10/24/2021 13:46 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. Astrong storm has been impacting the area tonight and will result in significantly increased wave energy from tonight into early Tuesday. This wave energy will transition through the coastal waters starting tonight into Tuesday, and peaking on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. From 11 PM tonight to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected.

High Surf Warning

Broadcast Time 10/24/2021 21:12 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/24/2021 21:12 PDT
Issuing Time 10/24/2021 21:12 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. Astrong storm has been impacting the area tonight and will result in significantly increased wave energy from tonight into early Tuesday. This wave energy will transition through the coastal waters starting tonight into Tuesday, and peaking on Monday. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and is in effect from 11PM Sunday to 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. From 11 PM tonight to 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected.

High Surf Warning

Broadcast Time 10/25/2021 03:04 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/25/2021 03:04 PDT
Issuing Time 10/25/2021 03:04 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. A strong storm has been impacting the area and will continue to significantly increase wave energy into early Tuesday. This wave energy will transition through the coastal waters and peak this afternoon. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and remains in effect until 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. Until 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected.

High Surf Warning

Broadcast Time 10/25/2021 14:02 PDT

High Surf Warning
Issued By NWS Monterey (The San Francisco area) Broadcast Time 10/25/2021 14:02 PDT
Issuing Time 10/25/2021 14:02 PDT Valid Until 10/26/2021 11:00 PDT

A VERY LARGE SWELL TRAIN WILL BRING COASTAL HAZARDS TO WEST TO NORTHWEST FACING BEACHES. A strong storm has been impacting the area and will continue to significantly increase wave energy into early Tuesday. This wave energy will transition through the coastal waters and peak this afternoon. Swell of 16 to 24 feet at 16 to 18 seconds is forecast to arrive with the swell train as it peaks on Monday and result in a number of coastal hazards. These hazards include large breaking waves of 20 to 30 feet (higher at favored break points), increased risk of strong longshore and rip currents, increased risk of coastal erosion and minor coastal flooding, and enhanced coastal run up concerns due to the summer beach profiles in place. Due to the early arrival of these large waves, many beaches are still transitioning from their summer beach profiles and lack the features and steepness to resist larger wave run up on coasts. This means that more of this wave energy will have a chance to move onto the beach and overtake individuals, potentially injuring them, or pulling them into the cold ocean. Each year, people die at the coast due to these or similar ocean conditions. A high surf warning for the entire coast has been issued for this threat and remains in effect until 11AM Tuesday, with the highest risks once again at west to northwest facing beaches. . HIGH SURF WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY. * WHAT. For the High Surf Warning, dangerously large breaking waves of 20 to 30 feet, greatly increased coastal run up, strong rip currents and longshore currents, and increased risk of minor coastal flooding in low lying areas. * WHERE. Entire Pacific Coast from Sonoma to Monterey county. Highest risk at west to northwest facing beaches, including but not limited to: Ocean Beach, Montara State Beach, Half Moon Bay State Beach, Manresa State Beach, and Marina State Beach. * WHEN. Until 11 AM PDT Tuesday. * IMPACTS. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected.

MyForecast Advisories are proprietary, forecasted advisories intended to warn of anticipated severe weather conditions that may occur over the next 24 hours.
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