Alert archive / California / Beach Hazards Statements in 2023
Beach Hazards Statement 9, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jun 30, 2023, 12:59 PM PDT for 6 counties in California. It took effect at Jul 1, 2023, 6:00 AM PDT. It was in force for 39 hr.
The area
The counties it named.
The facts
- Issued
- Jun 30, 2023, 12:59 PM PDT (19:59 UTC)
- In effect from
- Jul 1, 2023, 6:00 AM PDT
- Expired
- Jul 2, 2023, 8:37 PM PDT
- In force
- 39 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 20:04 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, 8.0 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
- 2253 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
083 WHUS46 KMTR 301959 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 1259 PM PDT Fri Jun 30 2023 CAZ006-505-509-529-530-012000- /O.NEW.KMTR.BH.S.0009.230701T1300Z-230703T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 1259 PM PDT Fri Jun 30 2023 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY EVENING... * WHAT...Rip currents, sneaker waves and cold water temperatures are expected. * 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 Counties. * WHEN...From Saturday morning through Sunday evening. * IMPACTS...Dangers to swimmers, surfers, and anyone standing or walking in or close to the water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Never turn your back to the ocean! Sneaker waves can occur at any time without warning. It is safest to swim at a beach with lifeguards. If you are caught in a rip current, don't try to swim against it. Instead, swim out of the current, parallel to the shore, and then back to shore. If you can't swim, float or tread water, and yell or wave for help if you need assistance. && $$
6 follow-up statements
892 WHUS46 KMTR 010106 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 606 PM PDT Fri Jun 30 2023 CAZ006-505-509-529-530-020115- /O.CON.KMTR.BH.S.0009.230701T1300Z-230703T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 606 PM PDT Fri Jun 30 2023 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY EVENING... * WHAT...Ocean temperatures are in the low 50s to low 60s. Unprepared beachgoers may get cold water shock if they are not used to these conditions. Although the rip current risks are not higher than normal, the beaches may be more crowded due to the holiday weekend and we encourage people to look out for each other in case someone is in distress. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...From Saturday morning through Sunday evening. * IMPACTS...Possible dangers to swimmers, surfers, and anyone standing or walking in or close to the water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Never turn your back to the ocean! Sneaker waves can occur at any time without warning. It is safest to swim at a beach with lifeguards. If you are caught in a rip current, don't try to swim against it. Instead, swim out of the current, parallel to the shore, and then back to shore. If you can't swim, float or tread water, and yell or wave for help if you need assistance. && $$
462 WHUS46 KMTR 010325 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 825 PM PDT Fri Jun 30 2023 CAZ506-011130- /O.NEW.KMTR.CF.Y.0007.230701T0325Z-230705T1000Z/ North Bay Interior Valleys- 825 PM PDT Fri Jun 30 2023 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Minor coastal flooding expected. * WHERE...North Bay Bayside Locations. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...The greatest risk for minor flooding is during high tide cycles between 10 PM and 2 AM each night. Lower than normal low tides will occur between 5 and 8 AM each morning. These impacts are most likely within bayside portions of Marin County and for low lying portions of the Delta. 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. && $$ CAZ006-505-509-529-530-011130- /O.CON.KMTR.BH.S.0009.230701T1300Z-230703T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 825 PM PDT Fri Jun 30 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 6 AM PDT SATURDAY THROUGH SUNDAY EVENING... * WHAT...Ocean temperatures are in the low 50s to low 60s. Unprepared beachgoers may get cold water shock if they are not used to these conditions. Although the rip current risks are not higher than normal, the beaches may be more crowded due to the holiday weekend and we encourage people to look out for each other in case someone is in distress. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...From Saturday morning through Sunday evening. * IMPACTS...Possible dangers to swimmers, surfers, and anyone standing or walking in or close to the water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
218 WHUS46 KMTR 010956 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 256 AM PDT Sat Jul 1 2023 CAZ506-012000- /O.CON.KMTR.CF.Y.0007.000000T0000Z-230705T1000Z/ North Bay Interior Valleys- 256 AM PDT Sat Jul 1 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Minor coastal flooding expected. * WHERE...North Bay Bayside Locations. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...The greatest risk for minor flooding is during high tide cycles between 10 PM and 2 AM each night. Lower than normal low tides will occur between 5 and 8 AM each morning. These impacts are most likely within bayside portions of Marin County and for low lying portions of the Delta. 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. && $$ CAZ006-505-509-529-530-012000- /O.CON.KMTR.BH.S.0009.230701T1300Z-230703T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 256 AM PDT Sat Jul 1 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 6 AM PDT THIS MORNING THROUGH SUNDAY EVENING... * WHAT...Sea surface temperatures are in the lower to mid 50s, 1F to 2F cooler than July normal sea surface temperatures. Unprepared beachgoers may get cold water shock if they are not used to these conditions. Although the rip current risks are not higher than normal, the beaches may be more crowded due to the holiday weekend and we encourage people to look out for each other in case someone is in distress. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...This morning through Sunday evening. * IMPACTS...Possible dangers to swimmers, surfers, and anyone standing or walking in or close to the water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
341 WHUS46 KMTR 012001 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 101 PM PDT Sat Jul 1 2023 CAZ506-030400- /O.CON.KMTR.CF.Y.0007.000000T0000Z-230705T1000Z/ North Bay Interior Valleys- 101 PM PDT Sat Jul 1 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Minor coastal flooding expected. * WHERE...North Bay Bayside Locations. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Flooding of low lying lots, parks, and roads with only isolated road closures expected. 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. && $$ CAZ006-505-509-529-530-030400- /O.CON.KMTR.BH.S.0009.000000T0000Z-230703T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 101 PM PDT Sat Jul 1 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY EVENING... * WHAT...Sea surface temperatures are in the lower to mid 50s, 1F to 2F cooler than July normal sea surface temperatures. Unprepared beachgoers may get cold water shock if they are not used to these conditions. Although the rip current risks are not higher than normal, the beaches may be more crowded due to the holiday weekend and we encourage people to look out for each other in case someone is in distress. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...This morning through Sunday evening. * IMPACTS...Possible dangers to swimmers, surfers, and anyone standing or walking in or close to the water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
968 WHUS46 KMTR 022043 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 143 PM PDT Sun Jul 2 2023 CAZ506-030600- /O.CON.KMTR.CF.Y.0007.000000T0000Z-230705T1000Z/ North Bay Interior Valleys- 143 PM PDT Sun Jul 2 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Minor coastal flooding expected as we experience a summer King Tides event now into the early morning hours of Wednesday. The peak high tides will occur late at night between 10 pm to 1 am each night and this is when the flooding of low lying spots is likely to occur on the Bay-side of North Bay counties. * WHERE...Bayside Locations of Marin, Sonoma, and Napa counties. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Flooding of low lying lots, parks, and roads with only isolated road closures expected. 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. && $$ CAZ006-505-509-529-530-030600- /O.CON.KMTR.BH.S.0009.000000T0000Z-230703T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 143 PM PDT Sun Jul 2 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... * WHAT...Sea surface temperatures are in the lower to mid 50s, 1F to 2F cooler than July normal sea surface temperatures. Unprepared beachgoers may get cold water shock if they are not used to these conditions. Although the rip current risks are not higher than normal, the beaches may be more crowded due to the holiday weekend and we encourage people to look out for each other in case someone is in distress. * WHERE...San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...This morning through Sunday evening. * IMPACTS...Possible dangers to swimmers, surfers, and anyone standing or walking in or close to the water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
173 WHUS46 KMTR 030337 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 837 PM PDT Sun Jul 2 2023 CAZ006-505-509-529-530-030445- /O.CAN.KMTR.BH.S.0009.000000T0000Z-230703T0600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 837 PM PDT Sun Jul 2 2023 ...BEACH HAZARDS STATEMENT IS CANCELLED... $$ CAZ506-031600- /O.CON.KMTR.CF.Y.0007.000000T0000Z-230705T1000Z/ North Bay Interior Valleys- 837 PM PDT Sun Jul 2 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Minor coastal flooding expected as we experience a summer King Tides event now into the early morning hours of Wednesday. The peak high tides will occur late at night between 10 pm to 1 am each night and this is when the flooding of low lying spots is likely to occur on the Bay-side of North Bay counties. * WHERE...Bayside Locations of Marin, Sonoma, and Napa counties. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Flooding of low lying lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
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.