Alert archive / California / Beach Hazards Statements in 2015
Beach Hazards Statement 11, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Oct 27, 2015, 3:19 AM PDT for 6 counties in California. It took effect at Oct 28, 2015, 5:00 AM PDT. It was in force for 34 hr.
The area
The counties it named.
The facts
- Issued
- Oct 27, 2015, 3:19 AM PDT (10:19 UTC)
- In effect from
- Oct 28, 2015, 5:00 AM PDT
- Expired
- Oct 29, 2015, 3:00 PM PDT
- In force
- 34 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 10:22 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, 10.3 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
- 2618 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
893 WHUS46 KMTR 271019 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 319 AM PDT TUE OCT 27 2015 ...A LARGE STORM SYSTEM EXTENDING ACROSS THE CENTRAL PACIFIC WILL BRING LARGE LONG PERIOD SWELLS TO THE AREA WEDNESDAY. SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS WILL ARRIVE WEDNESDAY MORNING AND CONTINUE THROUGH THURSDAY. THIS WILL TRANSLATE INTO LARGE BREAKING WAVES AT THE BEACHES. CAZ006-505-509-529-530-280400- /O.NEW.KMTR.BH.S.0011.151028T1200Z-151029T2200Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 319 AM PDT TUE OCT 27 2015 ...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A BEACH HAZARDS STATEMENT FOR LARGE BREAKING WAVES...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY AFTERNOON. * HAZARDS...SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS. * TIMING...WEDNESDAY MORNING THROUGH THURSDAY. * LOCATION...THE BEACHES FROM SONOMA COUNTY SOUTH TO MONTEREY COUNTY * POTENTIAL IMPACTS...LARGE BREAKING WAVES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR LARGE SHORE BREAK MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT LARGE BREAKING WAVES IN SHALLOW WATER. THESE LARGE BREAKING WAVES CAN LEAD TO BACK AND NECK INJURIES. SWIMMERS SHOULD AVOID SWIMMING IN AREAS OF LARGE SHORE BREAK AND ALWAYS SWIM NEAR A LIFEGUARD. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
5 follow-up statements
445 WHUS46 KMTR 280333 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 833 PM PDT TUE OCT 27 2015 ...A LARGE STORM SYSTEM EXTENDING ACROSS THE CENTRAL PACIFIC WILL BRING LARGE LONG PERIOD SWELLS TO THE AREA WEDNESDAY. SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS WILL ARRIVE WEDNESDAY MORNING AND CONTINUE THROUGH THURSDAY. THIS WILL TRANSLATE INTO LARGE BREAKING WAVES AT THE BEACHES. CAZ006-505-509-529-530-281300- /O.CON.KMTR.BH.S.0011.151028T1200Z-151029T2200Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 833 PM PDT TUE OCT 27 2015 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 5 AM PDT WEDNESDAY THROUGH THURSDAY AFTERNOON... * HAZARDS...SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS. * TIMING...WEDNESDAY MORNING THROUGH THURSDAY. * LOCATION...THE BEACHES FROM SONOMA COUNTY SOUTH TO MONTEREY COUNTY * POTENTIAL IMPACTS...LARGE BREAKING WAVES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR LARGE SHORE BREAK MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT LARGE BREAKING WAVES IN SHALLOW WATER. THESE LARGE BREAKING WAVES CAN LEAD TO BACK AND NECK INJURIES. SWIMMERS SHOULD AVOID SWIMMING IN AREAS OF LARGE SHORE BREAK AND ALWAYS SWIM NEAR A LIFEGUARD. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
912 WHUS46 KMTR 281325 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 625 AM PDT WED OCT 28 2015 ...A LARGE STORM SYSTEM EXTENDING ACROSS THE CENTRAL PACIFIC WILL BRING LARGE LONG PERIOD SWELLS TO THE AREA WEDNESDAY. SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS WILL ARRIVE WEDNESDAY MORNING AND CONTINUE THROUGH THURSDAY. THIS WILL TRANSLATE INTO LARGE BREAKING WAVES AT THE BEACHES. CAZ006-505-509-529-530-290500- /O.CON.KMTR.BH.S.0011.000000T0000Z-151029T2200Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 625 AM PDT WED OCT 28 2015 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... * HAZARDS...SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS. * TIMING...WEDNESDAY MORNING THROUGH THURSDAY. * LOCATION...THE BEACHES FROM SONOMA COUNTY SOUTH TO MONTEREY COUNTY * POTENTIAL IMPACTS...LARGE BREAKING WAVES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR LARGE SHORE BREAK MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT LARGE BREAKING WAVES IN SHALLOW WATER. THESE LARGE BREAKING WAVES CAN LEAD TO BACK AND NECK INJURIES. SWIMMERS SHOULD AVOID SWIMMING IN AREAS OF LARGE SHORE BREAK AND ALWAYS SWIM NEAR A LIFEGUARD. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
755 WHUS46 KMTR 290409 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 909 PM PDT WED OCT 28 2015 ...A LARGE STORM SYSTEM EXTENDING ACROSS THE CENTRAL PACIFIC HAS BROUGHT A LARGE LONG PERIOD SWELLS TO THE COASTAL WATERS. SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS WILL CONTINUE THROUGH THURSDAY. THIS WILL TRANSLATE INTO LARGE BREAKING WAVES AT THE BEACHES. CAZ006-505-509-529-530-291630- /O.CON.KMTR.BH.S.0011.000000T0000Z-151029T2200Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 909 PM PDT WED OCT 28 2015 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... * HAZARDS...SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 16 TO 18 SECONDS. * TIMING...WEDNESDAY THROUGH THURSDAY. * LOCATION...THE BEACHES FROM SONOMA COUNTY SOUTH TO MONTEREY COUNTY * POTENTIAL IMPACTS...LARGE BREAKING WAVES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR LARGE SHORE BREAK MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT LARGE BREAKING WAVES IN SHALLOW WATER. THESE LARGE BREAKING WAVES CAN LEAD TO BACK AND NECK INJURIES. SWIMMERS SHOULD AVOID SWIMMING IN AREAS OF LARGE SHORE BREAK AND ALWAYS SWIM NEAR A LIFEGUARD. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
539 WHUS46 KMTR 291426 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 726 AM PDT THU OCT 29 2015 ...A LARGE STORM SYSTEM EXTENDING ACROSS THE CENTRAL PACIFIC HAS BROUGHT A LARGE LONG PERIOD SWELLS TO THE COASTAL WATERS. SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 14 TO 16 SECONDS WILL CONTINUE THROUGH TODAY. THIS WILL TRANSLATE INTO LARGE BREAKING WAVES AT THE BEACHES. CAZ006-505-509-529-530-292200- /O.CON.KMTR.BH.S.0011.000000T0000Z-151029T2200Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 726 AM PDT THU OCT 29 2015 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * HAZARDS...SWELL HEIGHTS OF 9 TO 12 FEET WITH A PERIOD OF 14 TO 16 SECONDS. * TIMING...THROUGH THIS AFTERNOON. * LOCATION...THE BEACHES FROM SONOMA COUNTY SOUTH TO MONTEREY COUNTY * POTENTIAL IMPACTS...LARGE BREAKING WAVES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARD STATEMENT FOR LARGE SHORE BREAK MEANS THAT CONDITIONS ARE PRESENT TO SUPPORT LARGE BREAKING WAVES IN SHALLOW WATER. THESE LARGE BREAKING WAVES CAN LEAD TO BACK AND NECK INJURIES. SWIMMERS SHOULD AVOID SWIMMING IN AREAS OF LARGE SHORE BREAK AND ALWAYS SWIM NEAR A LIFEGUARD. BE SURE TO ALWAYS KEEP YOUR EYES ON THE OCEAN. && $$
570 WHUS46 KMTR 292158 CFWMTR COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO CA 258 PM PDT THU OCT 29 2015 CAZ006-505-509-529-530-292300- /O.EXP.KMTR.BH.S.0011.000000T0000Z-151029T2200Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 258 PM PDT THU OCT 29 2015 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 3 PM PDT THIS AFTERNOON... SWELL TRAIN WILL DROP BELOW CRITERIA FOR THIS EVENING. $$
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, 2:22 PM PDT | Small Craft Advisory for Rough Bar | MTR | 52 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.