Alert archive / California / Beach Hazards Statements in 2018
Beach Hazards Statement 8, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Dec 29, 2018, 3:05 AM PST for 6 counties in California. It took effect at Dec 29, 2018, 6:00 AM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 29, 2018, 3:05 AM PST (11:05 UTC)
- In effect from
- Dec 29, 2018, 6:00 AM PST
- Expired
- Dec 29, 2018, 6:00 PM PST
- In force
- 12 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 11:09 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 00:00Z, 11.1 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
- 2784 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
538 WHUS46 KMTR 291105 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 305 AM PST Sat Dec 29 2018 ...INCREASED RISK OF SNEAKER WAVES SATURDAY... CAZ006-505-509-529-530-300200- /O.NEW.KMTR.BH.S.0008.181229T1400Z-181230T0200Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 305 AM PST Sat Dec 29 2018 ...BEACH HAZARDS STATEMENT IN EFFECT FROM 6 AM PST THIS MORNING THROUGH THIS AFTERNOON... The National Weather Service in San Francisco has issued a Beach Hazards Statement, which is in effect from 6 AM PST this morning through this afternoon. * HAZARDS...Increased risk of sneaker waves on northern and central California beaches. * TIMING...Saturday. * LOCATION...Coastline from Sonoma County south through Monterey County. In particular west to northwest facing beaches...including but not limited to...Ocean Beach...Montara State Beach...Asilomar State Beach and Marina State Beach. * POTENTIAL IMPACTS...Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than normally expected. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement for sneaker waves means that conditions are present to support a heightened risk of unsuspecting beach goers being swept into the sea by a wave. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. && $$
1 follow-up statement
859 WHUS46 KMTR 300202 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 602 PM PST Sat Dec 29 2018 CAZ006-505-509-529-530-300315- /O.EXP.KMTR.BH.S.0008.000000T0000Z-181230T0200Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 602 PM PST Sat Dec 29 2018 ...BEACH HAZARDS STATEMENT HAS EXPIRED... $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 1:15 PM PST | High Wind Watch | MTR | San Mateo, Santa Clara, Santa Cruz | 13 hr |
| Dec 29, 2:21 PM PST | Gale Watch | MTR | 7 hr |
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.