Alert archive / California / Beach Hazards Statements in 2018
Beach Hazards Statement 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jan 11, 2018, 8:44 AM PST for 6 counties in California. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Jan 11, 2018, 8:44 AM PST (16:44 UTC)
- Expired
- Jan 11, 2018, 8:00 PM PST
- In force
- 11 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 16:46 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, 4.7 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
- 623 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
051 WHUS46 KMTR 111644 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 844 AM PST Thu Jan 11 2018 ...A long period northwest swell will move through the coastal waters into tonight... CAZ006-505-509-529-530-120400- /O.NEW.KMTR.BH.S.0001.180111T1644Z-180112T0400Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 844 AM PST Thu Jan 11 2018 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 8 PM PST THIS EVENING... The National Weather Service in San Francisco has issued a Beach Hazards Statement for large shore break, dangerous rip currents, and sneaker waves which is in effect until 8 PM PST this evening. * SEAS... NORTHWEST SWELLS 8 TO 10 FEET WITH A PERIOD OF 17 TO 20 SECONDS. * TIMING... THROUGH 8 PM TONIGHT. * 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 AND MARINA STATE BEACH. * POTENTIAL IMPACTS...LARGE SURF...SNEAKER WAVES...AND DANGEROUS RIP CURRENTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR LARGE SURF AND 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. && $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 10, 9:01 PM PST | Small Craft Advisory | MTR | 54 hr | |
| Jan 11, 3:02 AM PST | Small Craft Advisory for Rough Bar | MTR | 23 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.