Alert archive / California / Beach Hazards Statements in 2020
Beach Hazards Statement 8, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this beach hazards statement at Jul 2, 2020, 2:00 AM PDT for 6 counties in California. It took effect at Jul 3, 2020, 3:00 AM PDT. It was in force for 65 hr.
The area
The counties it named.
The facts
- Issued
- Jul 2, 2020, 2:00 AM PDT (09:00 UTC)
- In effect from
- Jul 3, 2020, 3:00 AM PDT
- Expired
- Jul 5, 2020, 8:00 PM PDT
- In force
- 65 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 08:57 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, 9.0 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
- 1639 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
218 WHUS46 KMTR 020900 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 200 AM PDT Thu Jul 2 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County from late Thursday night through Sunday evening... .A long period south to southwest swell will impact the coastline beginning late tonight and will continue through most of the weekend before subsiding. Energetic swell periods will reach 20 to 22 seconds late tonight and Friday before becoming 16 to 18 seconds Saturday and Sunday. CAZ006-505-509-529-530-022200- /O.NEW.KMTR.BH.S.0008.200703T1000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 200 AM PDT Thu Jul 2 2020 ...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches...including but not limited to...Santa Cruz and Stinson Beach. * WHEN...3 AM PDT Friday to 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties...inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
8 follow-up statements
460 WHUS46 KMTR 022116 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 216 PM PDT Thu Jul 2 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County from late tonight through Sunday evening... .A long period south to southwest swell will impact the coastline beginning late tonight and will continue through most of the weekend before subsiding. Energetic swell periods will reach 20 to 22 seconds late tonight and Friday before becoming 16 to 18 seconds Saturday and Sunday. CAZ006-505-509-529-530-030600- /O.CON.KMTR.BH.S.0008.200703T1000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 216 PM PDT Thu Jul 2 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...3 AM PDT Friday to 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
506 WHUS46 KMTR 030310 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 810 PM PDT Thu Jul 2 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County from late tonight through Sunday evening... .A long period south to southwest swell will impact the coastline beginning late tonight and will continue through most of the weekend before subsiding. Energetic swell periods will reach 20 to 22 seconds late tonight and Friday before becoming 16 to 18 seconds Saturday and Sunday. CAZ006-505-509-529-530-031300- /O.CON.KMTR.BH.S.0008.200703T1000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 810 PM PDT Thu Jul 2 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 3 AM PDT FRIDAY THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...3 AM PDT Friday to 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
920 WHUS46 KMTR 031114 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 414 AM PDT Fri Jul 3 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County through Sunday evening... .A long period south to southwest swell will impact the coastline through most of the weekend before subsiding. Energetic swell periods will reach 20 to 22 seconds today before becoming 16 to 18 seconds Saturday and Sunday. CAZ006-505-509-529-530-040000- /O.CON.KMTR.BH.S.0008.000000T0000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 414 AM PDT Fri Jul 3 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...3 AM PDT Friday to 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
187 WHUS46 KMTR 032116 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 216 PM PDT Fri Jul 3 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County through Sunday evening... .A long period south to southwest swell will impact the coastline through most of the weekend before subsiding. Energetic swell periods will reach 20 to 22 seconds today before becoming 16 to 18 seconds Saturday and Sunday. CAZ006-505-509-529-530-040600- /O.CON.KMTR.BH.S.0008.000000T0000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 216 PM PDT Fri Jul 3 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...Through 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
099 WHUS46 KMTR 040312 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 812 PM PDT Fri Jul 3 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County through Sunday evening... .A long period south to southwest swell will impact the coastline through most of the weekend before subsiding. Energetic swell periods will reach 20 to 22 seconds today before becoming 16 to 18 seconds Saturday and Sunday. CAZ006-505-509-529-530-041300- /O.CON.KMTR.BH.S.0008.000000T0000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 812 PM PDT Fri Jul 3 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...Through 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
614 WHUS46 KMTR 041129 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 429 AM PDT Sat Jul 4 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County through Sunday evening... .A long period south to southwest swell will continue to impact the coastline through most of the weekend before subsiding. Energetic swell periods of 16 to 19 seconds Saturday and Sunday. CAZ006-505-509-529-530-050000- /O.CON.KMTR.BH.S.0008.000000T0000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 429 AM PDT Sat Jul 4 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...Through 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
706 WHUS46 KMTR 050156 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 656 PM PDT Sat Jul 4 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County through Sunday evening... .A long period south to southwest swell will continue to impact the coastline through most of the weekend before subsiding. Energetic swell periods of 16 to 19 seconds Saturday and Sunday. CAZ006-505-509-529-530-051300- /O.CON.KMTR.BH.S.0008.000000T0000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 656 PM PDT Sat Jul 4 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...Through 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
013 WHUS46 KMTR 051322 CFWMTR Coastal Hazard Message National Weather Service San Francisco CA 622 AM PDT Sun Jul 5 2020 ...Increased risk of sneaker waves and strong rip currents from Coastal Sonoma County to Coastal Monterey County through Sunday evening... .A long period south to southwest swell will continue to impact the coastline through most of the weekend before subsiding. Energetic swell periods of 16 to 18 seconds Saturday and Sunday. CAZ006-505-509-529-530-060300- /O.CON.KMTR.BH.S.0008.000000T0000Z-200706T0300Z/ San Francisco- Coastal North Bay Including Point Reyes National Seashore- San Francisco Peninsula Coast-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 622 AM PDT Sun Jul 5 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...Sneaker waves, strong rip currents, longshore currents, and moderate shore break. * WHERE...Coastline from Sonoma County southward through Monterey County. In particular south facing beaches... including but not limited to...Santa Cruz and Stinson Beach. * WHEN...Through 8 PM PDT Sunday. * IMPACTS...Sneaker waves can knock unsuspecting beach goers over and into the sea. Rip currents can pull swimmers and surfers out to sea. * ADDITIONAL DETAILS...Please check with your local authorities on potential beach closures. Steep beaches will have a higher risk of sneaker wave and rip current activity with greater wave run- up onto beaches. 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. Rip currents are typically more frequent and stronger in the vicinity of jetties... inlets...and piers. People walking along the beach should never turn their back to the sea. Fisherman should avoid fishing from rocks or jetties. Remain out of the water to avoid hazardous swimming conditions. Anyone caught in a rip current should swim parallel to the coast to escape the rip current before trying to swim for shore. && $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 9:02 PM PDT | Small Craft Advisory | MTR | 118 min | |
| Jul 2, 12:42 AM PDT | Small Craft Advisory | MTR | 8 hr | |
| Jul 2, 2:31 AM PDT | Small Craft Advisory | MTR | 18 hr |
Nearby
Beach Hazards Statements in California, 2020Every beach hazards statement in 2020
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.