Alert archive / California / Beach Hazards Statements in 2019
Beach Hazards Statement 5, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Oct 28, 2019, 12:03 AM PDT for 6 counties in California. It took effect at Oct 28, 2019, 3:00 PM PDT. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Oct 28, 2019, 12:03 AM PDT (07:03 UTC)
- In effect from
- Oct 28, 2019, 3:00 PM PDT
- Expired
- Oct 29, 2019, 9:00 AM PDT
- 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 07:03 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, 7.1 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
- 3529 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -161 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
097 WHUS46 KMTR 280703 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 1203 AM PDT Mon Oct 28 2019 ...INCREASED RISK OF SNEAKER WAVES MONDAY AFTERNOON THROUGH TUESDAY MORNING... .A long period northwest swell will arrive on Monday and bring an increased risk of sneaker waves throughout the afternoon and into Tuesday morning. Expect long lulls between largest sets. Beachgoers should use caution along area beaches. The risk of sneaker waves will decrease as the period decreases on Tuesday. CAZ006-505-509-529-530-281515- /O.NEW.KMTR.BH.S.0005.191028T2200Z-191029T1600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 1203 AM PDT Mon Oct 28 2019 ...BEACH HAZARDS STATEMENT IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING... The National Weather Service in San Francisco has issued a Beach Hazards Statement for increased risk of sneaker waves, which is in effect from Monday afternoon through Tuesday morning. * HAZARDS...Increased risk of sneaker waves on Northern and Central California beaches. * TIMING...Monday 3 PM to 9 AM PDT Tuesday. * 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 be suddenly 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. && $$
3 follow-up statements
238 WHUS46 KMTR 281320 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 620 AM PDT Mon Oct 28 2019 ...INCREASED RISK OF SNEAKER WAVES THIS AFTERNOON THROUGH TUESDAY MORNING... .A long period northwest swell will arrive today and bring an increased risk of sneaker waves throughout the afternoon and into Tuesday morning. Expect long lulls between largest sets. Beachgoers should use caution along area beaches. The risk of sneaker waves will decrease as the period decreases on Tuesday. CAZ006-505-509-529-530-290130- /O.CON.KMTR.BH.S.0005.191028T2200Z-191029T1600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 620 AM PDT Mon Oct 28 2019 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 3 PM PDT THIS AFTERNOON THROUGH TUESDAY MORNING... * HAZARDS...Increased risk of sneaker waves on Northern and Central California beaches. * TIMING...Monday 3 PM to 9 AM PDT Tuesday. * LOCATION...Coastline from Sonoma County south through Monterey County. In particular west to northwest facing beaches... including but not limited to...Ocean Beach...Montara State Beach...Asilomar State Beach and Marina State Beach. * POTENTIAL IMPACTS...Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than normally expected. Unsuspecting beach-goers may be suddenly pulled out to sea. Never turn your back to the ocean! PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement for sneaker waves means that conditions are present to support a heightened risk of unsuspecting beach goers being swept into the sea by a wave. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. && $$
563 WHUS46 KMTR 290142 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 642 PM PDT Mon Oct 28 2019 ...INCREASED RISK OF SNEAKER WAVES THIS AFTERNOON THROUGH TUESDAY MORNING... .A long period northwest swell will bring a risk of sneaker waves throughout the afternoon and into Tuesday morning. Expect long lulls between largest sets. Beachgoers should use caution along area beaches. The risk of sneaker waves will decrease as the period decreases on Tuesday. CAZ006-505-509-529-530-291600- /O.CON.KMTR.BH.S.0005.000000T0000Z-191029T1600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 642 PM PDT Mon Oct 28 2019 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY MORNING... * HAZARDS...Increased risk of sneaker waves on Northern and Central California beaches. * TIMING...Through 9 AM PDT Tuesday. * 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 be suddenly 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. && $$
747 WHUS46 KMTR 291532 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 832 AM PDT Tue Oct 29 2019 CAZ006-505-509-529-530-291645- /O.EXP.KMTR.BH.S.0005.000000T0000Z-191029T1600Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 832 AM PDT Tue Oct 29 2019 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 9 AM PDT THIS MORNING... The beach hazard statement will expire due to wave heights and periods continuing to subside. $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 11:28 PM PDT | Small Craft Advisory | MTR | 4 hr | |
| Oct 28, 2:46 AM PDT | Small Craft Advisory | MTR | 36 hr | |
| Oct 28, 1:04 PM PDT | Red Flag Warning | MTR | Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara and 2 more | 51 hr |
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.