Alert archive / California / Beach Hazards Statements in 2015
Beach Hazards Statement 6, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Aug 29, 2015, 2:51 PM PDT for 6 counties in California. It took effect at Aug 30, 2015, 6:00 AM PDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Aug 29, 2015, 2:51 PM PDT (21:51 UTC)
- In effect from
- Aug 30, 2015, 6:00 AM PDT
- Expired
- Aug 30, 2015, 9:00 PM PDT
- In force
- 15 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 21:56 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, 9.9 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
- 813 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
179 WHUS46 KMTR 292151 CFWMTR URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 251 PM PDT SAT AUG 29 2015 ....INCREASED RISK OF HAZARDOUS BEACH CONDITIONS ALONG WEST FACING BEACHES ON SUNDAY... A LONG PERIOD SWELL TRAIN GENERATED BY TYPHOON ATSANI WILL GENERATE AN INCREASED RISK OF STRONG RIP CURRENTS ALONG WESTERLY FACING BEACHES ON SUNDAY. SWELL PERIODS ARE FORECAST TO INCREASE TO 18 TO 20 SECONDS ON THURSDAY. THE WAVES ASSOCIATED WITH THIS SWELL TRAIN WILL BE 3 TO 5 FEET WITH AN OCCASIONAL 6 FOOT WAVE MIXED IN. ISOLATED RIP CURRENTS HAVE ALREADY BEEN WITNESSED ON AREAL WEBCAMS WITH TODAYS 3 FOOT 15 SECOND SWELL... LEADING TO AN INCREASED CONFIDENCE OF STRONGER RIP CURRENTS ON SUNDAY. WESTERLY SWELL PERIODS ARE FORECAST TO DECREASE TO 15 SECONDS BY MONDAY MORNING. CAZ006-505-509-529-530-310400- /O.NEW.KMTR.BH.S.0006.150830T1300Z-150831T0400Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 251 PM PDT SAT AUG 29 2015 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... * LOCATION... ALL WEST FACING BEACHES OF SONOMA TO MONTEREY COUNTY. NORTHWEST FACING BEACHES WILL ALSO BE IMPACTED TO A LESSER DEGREE. * TIMING... SUNDAY MORNING 6AM TO SUNDAY EVENING 9PM. * IMPACTS... EXCEPTIONALLY STRONG RIP CURRENTS AND LARGE SHORE BREAKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ DRP HTTP://WWW.WEATHER.GOV/SANFRANCISCO
2 follow-up statements
883 WHUS46 KMTR 292154 CFWMTR URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 254 PM PDT SAT AUG 29 2015 ....INCREASED RISK OF HAZARDOUS BEACH CONDITIONS ALONG WEST FACING BEACHES ON SUNDAY...CORRECTED A LONG PERIOD SWELL TRAIN GENERATED BY TYPHOON ATSANI WILL GENERATE AN INCREASED RISK OF STRONG RIP CURRENTS ALONG WESTERLY FACING BEACHES ON SUNDAY. SWELL PERIODS ARE FORECAST TO INCREASE TO 18 TO 20 SECONDS ON SUNDAY. THE WAVES ASSOCIATED WITH THIS SWELL TRAIN WILL BE 3 TO 5 FEET WITH AN OCCASIONAL 6 FOOT WAVE MIXED IN. ISOLATED RIP CURRENTS HAVE ALREADY BEEN WITNESSED ON AREAL WEBCAMS WITH TODAYS 3 FOOT 15 SECOND SWELL... LEADING TO AN INCREASED CONFIDENCE OF STRONGER RIP CURRENTS ON SUNDAY. WESTERLY SWELL PERIODS ARE FORECAST TO DECREASE TO 15 SECONDS BY MONDAY MORNING. CAZ006-505-509-529-530-310400- /O.CON.KMTR.BH.S.0006.150830T1300Z-150831T0400Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 254 PM PDT SAT AUG 29 2015 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... * LOCATION... ALL WEST FACING BEACHES OF SONOMA TO MONTEREY COUNTY. NORTHWEST FACING BEACHES WILL ALSO BE IMPACTED TO A LESSER DEGREE. * TIMING... SUNDAY MORNING 6AM TO SUNDAY EVENING 9PM. * IMPACTS... EXCEPTIONALLY STRONG RIP CURRENTS AND LARGE SHORE BREAKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR RIP CURRENTS MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT A HEIGHTENED RISK OF STRONG RIP CURRENTS. RIP CURRENTS ARE TYPICALLY MORE FREQUENT AND STRONGER IN THE VICINITY OF JETTIES...INLETS...AND PIERS. SWIMMERS CAUGHT IN A RIP CURRENT SHOULD SWIM PARALLEL TO THE COAST TO ESCAPE THE RIP CURRENT BEFORE TRYING TO SWIM FOR SHORE. SWIMMERS SHOULD ALWAYS SWIM NEAR A LIFEGUARD. && $$ DRP HTTP://WWW.WEATHER.GOV/SANFRANCISCO
816 WHUS46 KMTR 301825 CFWMTR URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 1125 AM PDT SUN AUG 30 2015 ....INCREASED RISK OF RIP CURRENTS ALONG WEST FACING BEACHES THROUGH THIS AFTERNOON... A LONG PERIOD WESTERLY SWELL TRAIN ALONG WITH LOCALLY GENERATED WAVES ARE IMPACTING THE COAST TODAY. THESE CONDITIONS WILL PROMOTE PERIODS OF STRONG RIP CURRENTS AT THE BEACHES TODAY...ESPECIALLY ON WESTERLY FACING BEACHES. WINDS ARE EXPECTED TO INCREASE THIS AFTERNOON WHICH SHOULD DISRUPT THE RIP CURRENT ACTIVITY. CAZ006-505-509-529-530-310400- /O.CON.KMTR.BH.S.0006.000000T0000Z-150831T0400Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 1125 AM PDT SUN AUG 30 2015 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...BEACH HAZARDS STATEMENT IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... * LOCATION... ALL BEACHES ALONG THE COAST FROM SONOMA COUNTY SOUTH INTO MONTEREY COUNTY...LONG SANDY WEST FACING BEACHES CAN BE ESPECIALLY PRONE TO DANGEROUS RIP CURRENTS TODAY. * TIMING...THE REMAINDER OF THE DAY THROUGH 9PM THIS EVENING. * IMPACTS... EXCEPTIONALLY STRONG RIP CURRENTS AND LARGE SHORE BREAK. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$ HTTP://WWW.WEATHER.GOV/SANFRANCISCO
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 3:12 AM PDT | Small Craft Advisory | MTR | 4 days | |
| Aug 29, 2:19 PM PDT | Small Craft Advisory | MTR | 31 hr |
Nearby
Beach Hazards Statements in California, 2015Every beach hazards statement in 2015
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.