Alert archive / California / Beach Hazards Statements in 2018
Beach Hazards Statement 3, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jun 11, 2018, 8:26 AM PDT for Marin County, Santa Cruz County, Sonoma County, California. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Jun 11, 2018, 8:26 AM PDT (15:26 UTC)
- Expired
- Jun 11, 2018, 9:00 PM PDT
- In force
- 13 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Marin County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 98 km from the middle of the area, began a volume at 15:24 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, 3.4 hours before the alert went out and 35 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
- 1304 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
916 WHUS46 KMTR 111526 CFWMTR Coastal Hazard Message National Weather Service San Francisco Bay Area 826 AM PDT Mon Jun 11 2018 ...Long period southerly swell impacts south facing beaches today... .A southerly swell with heights 4 to 6 feet at 17 to 19 seconds will impact south facing beaches through the day today. This includes most Santa Cruz county beaches as well as beaches from Bolinas Bay through the Marin Headlands in Marin county. These conditions can result in hazardous beach conditions due to the increased risk of rip currents and large sneaker waves. CAZ505-529-120400- /O.NEW.KMTR.BH.S.0003.180611T1526Z-180612T0400Z/ Coastal North Bay Including Point Reyes National Seashore- Northern Monterey Bay- 826 AM PDT Mon Jun 11 2018 ...BEACH HAZARDS STATEMENT IN EFFECT THROUGH THIS EVENING... The National Weather Service in San Francisco has issued a Beach Hazards Statement for increased chance of sneaker waves and rip current risk, which is in effect through this evening. * WAVES AND SURF...Southerly swell 4 to 6 feet with a period of 17 to 19 seconds. * TIMING...Monday morning through at least Monday evening. * LOCATION...Coastal sections of marin and santa cruz counties. In particular south and southwest facing beaches...including but not limited to...stinson beach...santa cruz boardwalk beach and twin lakes beach. * POTENTIAL IMPACTS...Increased risk of sneaker waves and rip currents at these beaches. Never turn your back on 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. A Beach Hazard Statement for rip currents means that conditions are present to support a heightened risk of strong rip currents. Rip currents are typically more frequent and stronger in the vicinity of jetties...inlets...and piers. Swimmers caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. Swimmers should always swim near a lifeguard. && $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 3:04 AM PDT | Gale Warning | MTR | 21 hr | |
| Jun 11, 2:20 PM PDT | Gale Watch | MTR | 13 hr | |
| Jun 11, 2:20 PM PDT | Small Craft Advisory | MTR | 5 days |
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.