Alert archive / California / Beach Hazards Statements in 2019
Beach Hazards Statement 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jan 12, 2019, 3:02 AM PST for 6 counties in California. It took effect at Jan 13, 2019, 9:00 AM PST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Jan 12, 2019, 3:02 AM PST (11:02 UTC)
- In effect from
- Jan 13, 2019, 9:00 AM PST
- Expired
- Jan 14, 2019, 3:00 AM PST
- In force
- 18 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 11:04 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 00:00Z, 11.0 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
- 1014 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
879 WHUS46 KMTR 121102 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 302 AM PST Sat Jan 12 2019 ...INCREASED RISK OF SNEAKER WAVES SUNDAY... .A VERY LONG PERIOD NORTHWEST SWELL WILL ARRIVE EARLY SUNDAY MORNING AND BRING AN INCREASE RISK OF SNEAKER WAVES THROUGH THE DAY. EXPECT LONG LULLS BETWEEN LARGEST SETS. THE RISK OF SNEAKER WAVES WILL DECREASE AS THE PERIOD DECREASES ON MONDAY. CAZ006-505-509-529-530-122300- /O.NEW.KMTR.BH.S.0001.190113T1700Z-190114T1100Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 302 AM PST Sat Jan 12 2019 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY NIGHT... The National Weather Service in San Francisco has issued a Beach Hazards Statement for increased risk of sneaker waves, which is in effect from Sunday morning through late Sunday night. * HAZARDS...Increased risk of sneaker waves on northern and central California beaches. * TIMING...9AM Sunday through 3AM Monday. * 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. && $$
4 follow-up statements
806 WHUS46 KMTR 122228 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 228 PM PST Sat Jan 12 2019 ...INCREASED RISK OF SNEAKER WAVES SUNDAY... .A VERY LONG PERIOD NORTHWEST SWELL WILL ARRIVE EARLY SUNDAY MORNING AND BRING AN INCREASE RISK OF SNEAKER WAVES THROUGH THE DAY. EXPECT LONG LULLS BETWEEN LARGEST SETS. THE RISK OF SNEAKER WAVES WILL DECREASE AS THE PERIOD DECREASES ON MONDAY. CAZ006-505-509-529-530-131400- /O.CON.KMTR.BH.S.0001.190113T1700Z-190114T1100Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 228 PM PST Sat Jan 12 2019 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY NIGHT... * HAZARDS...Increased risk of sneaker waves on northern and central California beaches. * TIMING...9 AM Sunday through 3 AM Monday. * LOCATION...Coastline from Sonoma County south through Monterey County. In particular west to northwest facing beaches... including but not limited to...Ocean Beach...Montara State Beach...Asilomar State Beach and Marina State Beach. * POTENTIAL IMPACTS...Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than normally expected. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement for sneaker waves means that conditions are present to support a heightened risk of unsuspecting beach goers being swept into the sea by a wave. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. && $$
133 WHUS46 KMTR 131300 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 500 AM PST Sun Jan 13 2019 ...INCREASED RISK OF SNEAKER WAVES TODAY... .A VERY LONG PERIOD NORTHWEST SWELL WILL ARRIVE EARLY THIS MORNING AND BRING AN INCREASE RISK OF SNEAKER WAVES THROUGH THE DAY. EXPECT LONG LULLS BETWEEN LARGEST SETS. THE RISK OF SNEAKER WAVES WILL DECREASE AS THE PERIOD DECREASES ON MONDAY. CAZ006-505-509-529-530-140100- /O.CON.KMTR.BH.S.0001.190113T1700Z-190114T1100Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 500 AM PST Sun Jan 13 2019 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 AM PST THIS MORNING THROUGH LATE TONIGHT... * HAZARDS...Increased risk of sneaker waves on northern and central California beaches. * TIMING...9 AM Sunday through 3 AM Monday. * 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. && $$
570 WHUS46 KMTR 132238 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 238 PM PST Sun Jan 13 2019 ...INCREASED RISK OF SNEAKER WAVES TODAY... .A VERY LONG PERIOD NORTHWEST SWELL WILL BRING AN INCREASE RISK OF SNEAKER WAVES THROUGH TONIGHT. EXPECT LONG LULLS BETWEEN LARGEST SETS. THE RISK OF SNEAKER WAVES WILL DECREASE AS THE PERIOD DECREASES ON MONDAY. CAZ006-505-509-529-530-141100- /O.CON.KMTR.BH.S.0001.000000T0000Z-190114T1100Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 238 PM PST Sun Jan 13 2019 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT... * HAZARDS...Increased risk of sneaker waves on northern and central California beaches. * TIMING...9 AM Sunday through 3 AM Monday. * LOCATION...Coastline from Sonoma County south through Monterey County. In particular west to northwest facing beaches... including but not limited to...Ocean Beach...Montara State Beach...Asilomar State Beach and Marina State Beach. * POTENTIAL IMPACTS...Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than normally expected. Unsuspecting beach-goers may suddenly be pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement for sneaker waves means that conditions are present to support a heightened risk of unsuspecting beach goers being swept into the sea by a wave. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. && $$
957 WHUS46 KMTR 141103 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 303 AM PST Mon Jan 14 2019 CAZ006-505-509-529-530-141215- /O.EXP.KMTR.BH.S.0001.000000T0000Z-190114T1100Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 303 AM PST Mon Jan 14 2019 ...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 |
|---|---|---|---|---|
| Jan 12, 8:53 AM PST | Small Craft Advisory | MTR | 4 days |
Nearby
Beach Hazards Statements in California, 2019Every beach hazards statement in 2019
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.