Alert archive / California / Beach Hazards Statements in 2018
Beach Hazards Statement 6, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Oct 9, 2018, 1:41 PM PDT for 6 counties in California. It took effect at Oct 11, 2018, 5:00 AM PDT. It was in force for 36 hr.
The area
The counties it named.
The facts
- Issued
- Oct 9, 2018, 1:41 PM PDT (20:41 UTC)
- In effect from
- Oct 11, 2018, 5:00 AM PDT
- Expired
- Oct 12, 2018, 5:00 PM PDT
- In force
- 36 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 20:43 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, 8.7 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
- 1624 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
554 WHUS46 KMTR 092041 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 141 PM PDT Tue Oct 9 2018 ...SOUTHERLY SWELL GENERATED BY HURRICANE SERGIO WILL MOVE INTO THE SURF ZONE AND COASTAL WATERS LATER THIS WEEK... CAZ006-505-509-529-530-100700- /O.NEW.KMTR.BH.S.0006.181011T1200Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 141 PM PDT Tue Oct 9 2018 ...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH FRIDAY AFTERNOON... The National Weather Service in San Francisco has issued a Beach Hazards Statement for increased risk of rip currents, sneaker waves, longshore current, and breaking waves which is in effect from late Wednesday night through Friday afternoon. * WAVES AND SURF...Southerly swell 4 to 6 feet with a period of 14 to 17 seconds. Breaking waves of up to 10 feet will be possible at favored locations. * HAZARDS...Increased risk of rip currents and sneaker waves, stronger longshore current at west facing beaches, and somewhat larger breaking waves at south to southwest facing beaches. * TIMING...6am Thursday through 6pm Friday. * LOCATION...Primarily south to southwest facing coastal sections from Monterey county northward through Sonoma county. Including but not limited to...Stinson Beach...Carmel Beach... Santa Cruz Boardwalk Beach and Twin Lakes Beach. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement means the potentially dangerous conditions may exist on specific beaches. These hazards may include large shore break...strong rip currents...strong longshore currents and possibly sneaker waves. All of which could be life threatening. Be sure to always keep your eyes on the ocean. && $$
8 follow-up statements
543 WHUS46 KMTR 092046 AAA CFWMTR Coastal Hazard Message...UPDATED National Weather Service San Francisco Bay Area 146 PM PDT Tue Oct 9 2018 ...SOUTHERLY SWELL GENERATED BY HURRICANE SERGIO WILL MOVE INTO THE SURF ZONE AND COASTAL WATERS LATER THIS WEEK... CAZ006-505-509-529-530-100715- /O.CON.KMTR.BH.S.0006.181011T1200Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 146 PM PDT Tue Oct 9 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH FRIDAY AFTERNOON... * WAVES AND SURF...Southerly swell 4 to 6 feet with a period of 14 to 17 seconds. Breaking waves of up to 10 feet will be possible at favored locations. * HAZARDS...Increased risk of rip currents and sneaker waves, stronger longshore current at west facing beaches, and somewhat larger breaking waves at south to southwest facing beaches. * TIMING...5am Thursday through 5pm Friday. * LOCATION...Primarily south to southwest facing coastal sections from Monterey county northward through Sonoma county. Including but not limited to...Stinson Beach...Carmel Beach... Santa Cruz Boardwalk Beach and Twin Lakes Beach. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement means the potentially dangerous conditions may exist on specific beaches. These hazards may include large shore break...strong rip currents...strong longshore currents and possibly sneaker waves. All of which could be life threatening. Be sure to always keep your eyes on the ocean. && $$
941 WHUS46 KMTR 100536 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 1036 PM PDT Tue Oct 9 2018 ...SOUTHERLY SWELL GENERATED BY TROPICAL STORM SERGIO WILL MOVE INTO THE SURF ZONE AND COASTAL WATERS LATER THIS WEEK... CAZ006-505-509-529-530-101600- /O.CON.KMTR.BH.S.0006.181011T1200Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 1036 PM PDT Tue Oct 9 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH FRIDAY AFTERNOON... * WAVES AND SURF...Southerly swell 4 to 6 feet with a period of 14 to 17 seconds. Breaking waves of up to 10 feet will be possible at favored locations. * HAZARDS...Increased risk of rip currents and sneaker waves, stronger longshore current at west facing beaches, and somewhat larger breaking waves at south to southwest facing beaches. * TIMING...5 AM Thursday through 5 PM Friday. * LOCATION...Primarily south to southwest facing coastal sections from Monterey county northward through Sonoma county. Including but not limited to...Stinson Beach...Carmel Beach... Santa Cruz Boardwalk Beach and Twin Lakes Beach. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement means the potentially dangerous conditions may exist on specific beaches. These hazards may include large shore break...strong rip currents...strong longshore currents and possibly sneaker waves. All of which could be life threatening. Be sure to always keep your eyes on the ocean. && $$
060 WHUS46 KMTR 101436 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 736 AM PDT Wed Oct 10 2018 ...SOUTHERLY SWELL GENERATED BY TROPICAL STORM SERGIO WILL MOVE INTO THE SURF ZONE AND COASTAL WATERS BY SUNRISE THURSDAY... CAZ006-505-509-529-530-110500- /O.CON.KMTR.BH.S.0006.181011T1200Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 736 AM PDT Wed Oct 10 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SUNRISE THURSDAY THROUGH FRIDAY AFTERNOON... * WAVES AND SURF...Southerly swell 4 to 6 feet with a period of 14 to 17 seconds. Breaking waves of up to 10 feet will be possible at favored locations. * HAZARDS...Increased risk of rip currents and sneaker waves, stronger longshore current at west facing beaches, and somewhat larger breaking waves at south to southwest facing beaches. * TIMING...5 AM Thursday through 5 PM Friday. * LOCATION...Primarily south to southwest facing coastal sections from Monterey county northward through Sonoma county. Including but not limited to...Stinson Beach...Carmel Beach... Santa Cruz Boardwalk Beach and Twin Lakes Beach. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement means the potentially dangerous conditions may exist on specific beaches. These hazards may include large shore break...strong rip currents...strong longshore currents and possibly sneaker waves. All of which could be life threatening. Be sure to always keep your eyes on the ocean. && $$
630 WHUS46 KMTR 110403 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 903 PM PDT Wed Oct 10 2018 ...SOUTHERLY SWELL GENERATED BY TROPICAL STORM SERGIO WILL MOVE INTO THE SURF ZONE AND COASTAL WATERS BY SUNRISE THURSDAY... CAZ006-505-509-529-530-111400- /O.CON.KMTR.BH.S.0006.181011T1200Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 903 PM PDT Wed Oct 10 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 5 AM PDT THURSDAY THROUGH FRIDAY AFTERNOON... * WAVES AND SURF...Southerly swell 4 to 6 feet with a period of 14 to 17 seconds. Breaking waves of up to 10 feet will be possible at favored locations. * HAZARDS...Increased risk of rip currents and sneaker waves, stronger longshore current at west facing beaches, and somewhat larger breaking waves at south to southwest facing beaches. * TIMING...5 AM Thursday through 5 PM Friday. * LOCATION...Primarily south to southwest facing coastal sections from Monterey county northward through Sonoma county. Including but not limited to...Stinson Beach...Carmel Beach... Santa Cruz Boardwalk Beach and Twin Lakes Beach. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement means the potentially dangerous conditions may exist on specific beaches. These hazards may include large shore break...strong rip currents...strong longshore currents and possibly sneaker waves. All of which could be life threatening. Be sure to always keep your eyes on the ocean. && $$
381 WHUS46 KMTR 111214 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 514 AM PDT Thu Oct 11 2018 ...SOUTHERLY SWELL GENERATED BY TROPICAL STORM SERGIO WILL MOVE INTO THE SURF ZONE AND COASTAL WATERS BY SUNRISE THIS MORNING... CAZ006-505-509-529-530-120500- /O.CON.KMTR.BH.S.0006.000000T0000Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 514 AM PDT Thu Oct 11 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... * WAVES AND SURF...Southerly swell 4 to 6 feet with a period of 14 to 17 seconds. Breaking waves of up to 10 feet will be possible at favored locations. * HAZARDS...Increased risk of rip currents and sneaker waves, stronger longshore current at west facing beaches, and somewhat larger breaking waves at south to southwest facing beaches. * TIMING...5 AM today through 5 PM Friday. * LOCATION...Primarily south to southwest facing coastal sections from Monterey county northward through Sonoma county. Including but not limited to...Stinson Beach...Carmel Beach... Santa Cruz Boardwalk Beach and Twin Lakes Beach. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement means the potentially dangerous conditions may exist on specific beaches. These hazards may include large shore break...strong rip currents...strong longshore currents and possibly sneaker waves. All of which could be life threatening. Be sure to always keep your eyes on the ocean. && $$
323 WHUS46 KMTR 120212 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 712 PM PDT Thu Oct 11 2018 ...SOUTHERLY SWELL GENERATED BY TROPICAL STORM SERGIO WILL CONTINUE TO MOVE THROUGH THE COASTAL WATER TONIGHT... CAZ006-505-509-529-530-121015- /O.CON.KMTR.BH.S.0006.000000T0000Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 712 PM PDT Thu Oct 11 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... * WAVES AND SURF...Swell 3 to 5 feet from the South-southwest with a period around 14 seconds will cause breaking waves of 5 to 7 feet with occasional breakers to around 9 feet at beaches facing directly at the southerly swell. * HAZARDS...Increased risk of rip currents, sneaker waves, stronger longshore current at west facing beaches, and somewhat larger breaking waves at exposed south to southwest facing beaches. * TIMING...Now through 5 PM Friday. * LOCATION...Primarily south to southwest facing coastal sections from Monterey county northward through Sonoma county. Including but not limited to...Stinson Beach...Half Moon Bay... and exposed beaches on Santa Cruz's Westside. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement means the potentially dangerous conditions may exist on specific beaches. These hazards may include large shore break...strong rip currents...strong longshore currents and possibly sneaker waves. All of which could be life threatening. Be sure to always keep your eyes on the ocean. && $$
612 WHUS46 KMTR 120822 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 122 AM PDT Fri Oct 12 2018 CAZ006-505-509-529-530-120930- /O.CAN.KMTR.BH.S.0006.000000T0000Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 122 AM PDT Fri Oct 12 2018 ...BEACH HAZARDS STATEMENT IS CANCELLED... Southerly swell are near 3 feet with swell periods 12 seconds and are forecast to slowly decrease through today. This is below the criteria neccesary for a Beach Hazards Statement therefore it has been cancelled. $$
116 WHUS46 KMTR 120830 CCA CFWMTR Coastal Hazard Message...CORRECTED National Weather Service San Francisco Bay Area 130 AM PDT Fri Oct 12 2018 CAZ006-505-509-529-530-120930- /O.COR.KMTR.BH.S.0006.000000T0000Z-181013T0000Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 130 AM PDT Fri Oct 12 2018 ...BEACH HAZARDS STATEMENT IS CANCELLED... Southerly swell are near 3 feet with swell periods 12 seconds and are forecast to slowly decrease through today. This is below the criteria necessary for a Beach Hazards Statement therefore it has been cancelled. $$
Nearby
Beach Hazards Statements in California, 2018Every beach hazards statement in 2018
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.