Alert archive / California / Beach Hazards Statements in 2023
Beach Hazards Statement 2, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jan 19, 2023, 1:59 PM PST for 6 counties in California. It took effect at Jan 20, 2023, 7:00 PM PST. It was in force for 45 hr.
The area
The counties it named.
The facts
- Issued
- Jan 19, 2023, 1:59 PM PST (21:59 UTC)
- In effect from
- Jan 20, 2023, 7:00 PM PST
- Expired
- Jan 22, 2023, 4:00 PM PST
- In force
- 45 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties City and County of San Francisco, CA, Marin County, CA, Monterey County, CA, San Mateo County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 53 km from the middle of the area, began a volume at 22:04 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 10.0 hours before the alert went out and 26 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1075 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
289 WHUS46 KMTR 192159 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 159 PM PST Thu Jan 19 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL CAUSE HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, continue to impact the coast and Bay shoreline from through the 23rd and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell arrives Friday evening, which will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-200600- /O.NEW.KMTR.BH.S.0002.230121T0300Z-230123T0000Z/ /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 159 PM PST Thu Jan 19 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT IN EFFECT FROM FRIDAY EVENING THROUGH SUNDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, from Friday evening through Sunday afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell arriving Friday evening will create risk for sneaker waves as well as further runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Tide poolers and beachgoers should also be aware that there could be occasional waves running farther up the beach than normal. Do not turn your back to the ocean. Don't be fooled by an ocean that looks calm. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$ CAZ506-508-200600- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 159 PM PST Thu Jan 19 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations across the coast and the San Francisco Bay shoreline during peak high tide through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast and around the San Francisco Bay Shoreline with the highest high tides. Difficulty navigating shallow bay waters during the lowest low tides. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Tide poolers should also be aware that there could be occasional waves running farther up the beach than normal. Do not turn your back to the ocean. && $$
8 follow-up statements
172 WHUS46 KMTR 200457 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 857 PM PST Thu Jan 19 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL CAUSE HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell arrives Friday evening, which will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-201330- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0002.230121T0300Z-230123T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 857 PM PST Thu Jan 19 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM FRIDAY EVENING THROUGH SUNDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, from Friday evening through Sunday afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell arriving Friday evening will create greater risk for sneaker waves as well as farther runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-201330- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 857 PM PST Thu Jan 19 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast and around the San Francisco Bay Shoreline with the highest high tides. Difficulty navigating shallow bay waters during the lowest low tides. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Tide poolers should also be aware that there could be occasional waves running farther up the beach than normal. Do not turn your back to the ocean. && $$
703 WHUS46 KMTR 201214 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 414 AM PST Fri Jan 20 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL RESULT IN HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell arrives Friday evening, which will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-202300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0002.230121T0300Z-230123T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 414 AM PST Fri Jan 20 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS EVENING THROUGH SUNDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide each day through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, from this evening through Sunday afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell arriving Friday evening will create greater risk for sneaker waves as well as farther runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-202300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 414 AM PST Fri Jan 20 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide each day through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast and around the San Francisco Bay Shoreline with the highest high tides. Difficulty navigating shallow bay waters during the lowest low tides. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
681 WHUS46 KMTR 202222 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 222 PM PST Fri Jan 20 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL RESULT IN HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell arrives Friday evening, which will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-211200- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0002.230121T0300Z-230123T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 222 PM PST Fri Jan 20 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 7 PM PST THIS EVENING THROUGH SUNDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide each day through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, from 7 PM PST this evening through Sunday afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell arriving Friday evening will create greater risk for sneaker waves as well as farther runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-211200- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 222 PM PST Fri Jan 20 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide each day through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast and around the San Francisco Bay Shoreline with the highest high tides. Difficulty navigating shallow bay waters during the lowest low tides. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
129 WHUS46 KMTR 211110 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 310 AM PST Sat Jan 21 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL RESULT IN HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-212300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0002.000000T0000Z-230123T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 310 AM PST Sat Jan 21 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide each day through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, through Sunday afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell will create greater risk for sneaker waves as well as farther runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-212300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 310 AM PST Sat Jan 21 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide each day through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast and around the San Francisco Bay Shoreline with the highest high tides. Difficulty navigating shallow bay waters during the lowest low tides. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
193 WHUS46 KMTR 212244 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 244 PM PST Sat Jan 21 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL RESULT IN HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-221200- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0002.000000T0000Z-230123T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 244 PM PST Sat Jan 21 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide each day through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, through Sunday afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell will create greater risk for sneaker waves as well as farther runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-221200- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 244 PM PST Sat Jan 21 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide each day through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast and around the San Francisco Bay Shoreline with the highest high tides. Difficulty navigating shallow bay waters during the lowest low tides. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
984 WHUS46 KMTR 221032 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 232 AM PST Sun Jan 22 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL RESULT IN HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-222300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0002.000000T0000Z-230123T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 232 AM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide each day through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, through this afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell will create greater risk for sneaker waves as well as farther runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-222300- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 232 AM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide each day through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
012 WHUS46 KMTR 222223 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 223 PM PST Sun Jan 22 2023 ...LONG PERIOD SWELL, SNEAKER WAVES, AND KING TIDES WILL RESULT IN HAZARDOUS BEACH CONDITIONS. ADDITIONAL RUNUP ON BEACHES POSSIBLE THIS WEEKEND IN ADDITION TO MINOR COASTAL FLOODING FOR LOW LYING AREAS THROUGH MONDAY AFTERNOON... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. In addition, long period northwest swell will enhance sneaker wave and rip current risk. CAZ006-505-509-529-530-230630- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ /O.CON.KMTR.BH.S.0002.000000T0000Z-230123T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 223 PM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WHAT...For the Coastal Flood Advisory, minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide each day through Monday afternoon. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents along the coast, especially for northwest facing beaches. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday. For the Beach Hazards Statement, through this afternoon. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. King Tides in combination with a long period northwest swell will create greater risk for sneaker waves as well as farther runup of water near the coast and on beaches. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels and also use caution as sneaker wave risk is enhanced due to incoming long period swell. Sneaker waves in addition to King Tides could create additional runup of water and can easily move logs, making for hazardous conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ506-508-230630- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 223 PM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide each day through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
766 WHUS46 KMTR 222356 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 356 PM PST Sun Jan 22 2023 ...KING TIDES CONTINUE THROUGH MONDAY AFTERNOON, BRINGING MINOR COASTAL FLOODING FOR LOW LYING AREAS... .The highest astronomical tides of the year, commonly referred to as the King Tides, will impact the coast and San Francisco Bay shoreline through Monday the 23rd, and have historically resulted in the localized flooding of specific low lying areas each year. The lowest low tides of the event will be observed during the late afternoon to early evening hours which may lead to trouble for mariners navigating shallow waterways. CAZ006-505-509-529-530-231200- /O.EXP.KMTR.BH.S.0002.000000T0000Z-230123T0000Z/ /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 356 PM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 4 PM PST THIS AFTERNOON... * WHAT...Minor coastal flooding expected at prone low lying coastal locations across the coast during peak high tide each day through Monday afternoon. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of areas previously impacted by King Tide events is expected, including low lying lots, parks, and roads along the coast with the highest high tides. * ADDITIONAL DETAILS...Tidal levels will rise along the Pacific coast but impacts will be more localized to areas such as Elkhorn Slough near Moss Landing and the mouth of the Salinas river at the Salinas Lagoon. Beachgoers should be familiar with times and heights of local tidal levels. Occurrence of sneaker waves is no longer a high risk as northwest swell has diminished, but continue to use caution near the ocean. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ CAZ506-508-231200- /O.CON.KMTR.CF.Y.0004.000000T0000Z-230123T2300Z/ North Bay Interior Valleys-San Francisco Bay Shoreline- 356 PM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST MONDAY... * WHAT...Minor coastal flooding expected at prone low lying coastal locations along the coast and the San Francisco Bay shoreline during peak high tide each day through Monday afternoon. * WHERE...North Bay Interior Valleys and San Francisco Bay Shoreline. * WHEN...Until 3 PM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Tide poolers and beachgoers should be familiar with the times and heights of local tidal levels to avoid hazards that may arise from rapidly shifting water levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
What forecasters said that day
The local office's own words before this beach hazards statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this beach hazards statement went out at Jan 19, 10:19 AM PST, 3 hours 40 minutes earlier.
Area forecast discussion, Jan 19, 10:19 AM PST, 3 hours 40 minutes before
Area Forecast Discussion
National Weather Service San Francisco Bay Area
1019 AM PST Thu Jan 19 2023
.SYNOPSIS...Light rain ending later this morning as a cold front
departs the area. Thereafter high pressure will bring dry weather
and cooler temperatures. Frost and freezing conditions will
return for colder inland areas into this weekend.
&&
.DISCUSSION...as of 12:40 AM PST Thursday...
Today and Tonight:
A shortwave trough now over NorCal and the Pacific Northwest will
shift east and evolve to a closed upper low over the Desert
Southwest. This will allow high amplitude ridging over the eastern
Pacific to shift into the region by this evening. A surface cold
front now bisecting the Bay Area will shift to our south later this
morning bringing an end to any lingering showers. Thereafter our
focus turns to colder air spilling into the area behind the front.
High temperatures this afternoon should only top out in the lower to
mid 50s for the lower elevations with 40s in the mountains. By
tonight, good radiational cooling should ensue with readings
dropping into the 30s nearly region-wide. The exception will be
right along the coast and bays where lows should be near 40. Frost
and freezing temperatures are expected for the North Bay Valleys,
inland East Bay, Santa Clara Valley, and inland Monterey and San
Benito Counties where a Freeze Warning is in effect. These
temperatures are a direct threat to unsheltered populations and
those without adequate access to heating. Make sure to protect
people, pets, plants, and pipes from the cold.
Friday through Thursday:
Stout upper ridging over the eastern Pacific will provide a
protective influence over our area as weather disturbances shift
inland to our east while keeping us dry. Surface high pressure will
center over the Pacific waters and subsequently strengthen through
the central Great Basin into the weekend. This pattern will promote
mostly sunny days and chilly nights. The coldest period will be on
Friday morning and from Friday night into Saturday morning. In each
case low temperatures will be mostly in the 30s with readings around
40 on the SF Peninsula. The coldest inland valleys may even dip into
the 20s. Another Freeze Warning will likely be needed in the Friday
night-Saturday morning timeframe to account for these conditions
across inland areas. Once again overnight and morning temperatures
will be hazardous to unsheltered or marginally sheltered
populations. Otherwise low temperatures will gradually moderate
after the weekend with readings mainly in the upper 30s and 40s.
Daytime highs will remain seasonally cool and mostly in the 50s to
around 60.
&&
.AVIATION...as of 10:15 AM PST Thursday...For the 18Z TAFs. VFR
conditions prevail through the day today as skies clear out in the
post-frontal environment. NNW winds of 8 to 15 knots expected
this afternoon and evening. More inland TAF sites such as KAPC and
KLVK could see winds shift NNE this evening as the upper level
trough exits California and moves eastward. Low end LLWS concerns
for KAPC as well. VFR through the TAF period with the exception of
KSTS where patchy valley fog will likely develop again into the
early morning. Lower confidence for KSNS seeing patchy fog, but
MVFR visbys included at the end of the period to account for this
possibility. Light offshore drainage winds expected tonight for
valleys.
Vicinity of SFO...VFR. NW winds will increase through the
afternoon with gusts up to 20 knots possible. Winds shift NNW
this evening and eventually NNE overnight into the early morning
Friday.
SFO Bridge Approach...Similar to SFO.
Monterey Bay...VFR with clearing skies. NW winds will increase
this afternoon to around 8 to 12 knots. Low confidence that KSNS
will see patchy fog again this morning, but MVFR visbys included
at the end of the period. Light drainage winds tonight.
&&
.BEACHES...As of 03:28 PM Wednesday...As storms exit the
California forecast, trending into more drier conditions, the
anomalously high water levels are also diminishing down toward the
astronomical tidal predictions. However, the King Tides, which
result in the highest high tides and the lowest low tides, return
this weekend. Higher water levels will continue through early next
week resulting in minor coastal flooding in traditional low lying
areas. Those visiting the coast should be familiar with the times
and heights of local tidal levels to avoid hazards that may arise
from rapidly shifting water levels.
&&
.MARINE...as of 08:33 AM PST Thursday...Breezy northwest winds and
elevated seas persist in the post- frontal environment through
early Friday, making conditions hazardous for small craft. Long
period northwesterly swell arrives Friday evening and will
diminish through early next week.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
.Tday...Coastal Flood Advisory...CAZ006-505-506-508-509-529-530
SCA...Mry Bay until 3 PM
SCA...Pt Reyes to Pigeon Pt 0-10 nm until 3 PM
SCA...Pt Arena to Pt Reyes 0-10 nm
SCA...Pigeon Pt to Pt Pinos 0-10 nm
SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm
SCA...Pigeon Pt to Pt Piedras Blancas 10-60 nm
SCA...Pt Arena to Pigeon Pt 10-60 nm
&&
PUBLIC FORECAST: SPM
AVIATION: McCorkle
MARINE: McCorkle
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www.youtube.com/nwsbayareaThe office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 6:56 PM PST | Freeze Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 2 more | 34 hr |
| Jan 19, 2:16 PM PST | Freeze Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 2 more | 43 hr |
Nearby
Beach Hazards Statements in California, 2023Every beach hazards statement in 2023
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.