Alert archive / California / High Surf Advisories in 2016
High Surf Advisory 7, NWS Eureka, CA
NWS Eureka, CA issued this high surf advisory at Oct 12, 2016, 2:06 PM PDT for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Oct 13, 2016, 11:00 PM PDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Oct 12, 2016, 2:06 PM PDT (21:06 UTC)
- In effect from
- Oct 13, 2016, 11:00 PM PDT
- Expired
- Oct 14, 2016, 12:00 PM PDT
- In force
- 13 hr
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Mendocino County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 47 km from the middle of the area, began a volume at 21:03 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
Medford/Jackson, OR (KMFR), launched 12:00Z, 9.1 hours before the alert went out and 210 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
- 1121 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
066 WHUS46 KEKA 122106 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 206 PM PDT WED OCT 12 2016 ...HIGH SURF EXPECTED THURSDAY NIGHT... A STRONG STORM WILL GENERATE LARGE WESTERLY SWELL THAT WILL SPREAD INTO NORTHWESTERN CALIFORNIA COASTAL WATERS THURSDAY NIGHT. LARGE WIND DRIVEN SOUTHERLY SEAS ARE EXPECTED IN THE AFTERNOON ON THURSDAY. LONGER PERIOD WESTERLY WAVES WILL BUILD THURSDAY EVENING AND PEAK NEAR 17 FEET BY EARLY FRIDAY MORNING. ANOTHER LARGE WESTERLY SWELL IS EXPECTED THIS WEEKEND. CAZ101-103-104-130515- /O.NEW.KEKA.SU.Y.0007.161014T0100Z-161014T1500Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- 206 PM PDT WED OCT 12 2016 ...HIGH SURF ADVISORY IN EFFECT FROM 6 PM THURSDAY TO 8 AM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM 6 PM THURSDAY TO 8 AM PDT FRIDAY. * WAVES AND SURF...BREAKING WAVES 18 TO 22 FEET ALONG WEST AND NORTHWEST FACING BEACHES. * IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE INTO THE FRIGID AND TURBULENT OCEAN WATERS. MARINERS TRAVERSING THE BAR ARE URGED TO EXERCISE EXTREME CAUTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$
6 follow-up statements
170 WHUS46 KEKA 130530 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1030 PM PDT WED OCT 12 2016 ...HIGH SURF EXPECTED THURSDAY NIGHT... A STRONG STORM WILL GENERATE LARGE WESTERLY SWELL THAT WILL SPREAD INTO NORTHWESTERN CALIFORNIA COASTAL WATERS THURSDAY NIGHT. LARGE WIND DRIVEN SOUTHERLY SEAS ARE EXPECTED IN THE AFTERNOON ON THURSDAY. LONGER PERIOD WESTERLY WAVES WILL BUILD THURSDAY EVENING AND PEAK EARLY FRIDAY MORNING. ANOTHER LARGE WESTERLY SWELL IS EXPECTED THIS WEEKEND. CAZ109-131800- /O.EXA.KEKA.SU.Y.0007.161014T0100Z-161014T1500Z/ MENDOCINO COAST- 1030 PM PDT WED OCT 12 2016 ...HIGH SURF ADVISORY IN EFFECT FROM 6 PM THURSDAY TO 8 AM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM 6 PM THURSDAY TO 8 AM PDT FRIDAY. * WAVES AND SURF...BREAKING WAVES 17 TO 22 FEET ALONG WEST AND NORTHWEST FACING BEACHES. * IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE INTO THE FRIGID AND TURBULENT OCEAN WATERS. MARINERS TRAVERSING THE BAR ARE URGED TO EXERCISE EXTREME CAUTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$ CAZ101-103-104-131800- /O.CON.KEKA.SU.Y.0007.161014T0100Z-161014T1500Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- 1030 PM PDT WED OCT 12 2016 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 PM THURSDAY TO 8 AM PDT FRIDAY... * WAVES AND SURF...BREAKING WAVES 18 TO 22 FEET ALONG WEST AND NORTHWEST FACING BEACHES. * IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE INTO THE FRIGID AND TURBULENT OCEAN WATERS. MARINERS TRAVERSING THE BAR ARE URGED TO EXERCISE EXTREME CAUTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$
173 WHUS46 KEKA 131926 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1226 PM PDT THU OCT 13 2016 ...HIGH SURF EXPECTED TONIGHT... A STRONG STORM WILL GENERATE LARGE WESTERLY SWELL THAT WILL SPREAD INTO NORTHWESTERN CALIFORNIA COASTAL WATERS THURSDAY NIGHT. LARGE WIND DRIVEN SOUTHERLY SEAS ARE EXPECTED IN THE AFTERNOON ON THURSDAY. LONGER PERIOD WESTERLY WAVES WILL BUILD THURSDAY EVENING AND PEAK EARLY FRIDAY MORNING. ANOTHER LARGE WESTERLY SWELL IS EXPECTED THIS WEEKEND. CAZ101-103-104-109-141500- /O.CON.KEKA.SU.Y.0007.161014T0100Z-161014T1500Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 1226 PM PDT THU OCT 13 2016 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 8 AM PDT FRIDAY... * WAVES AND SURF...BREAKING WAVES 18 TO 22 FEET ALONG WEST AND NORTHWEST FACING BEACHES. * IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE INTO THE FRIGID AND TURBULENT OCEAN WATERS. MARINERS TRAVERSING THE BAR ARE URGED TO EXERCISE EXTREME CAUTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. && $$
437 WHUS46 KEKA 132130 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 230 PM PDT THU OCT 13 2016 ...HIGH SURF EXPECTED TONIGHT THROUGH FRIDAY MORNING... ...COASTAL FLOODING POSSIBLE ON FRIDAY... A STRONG STORM WILL GENERATE LARGE WESTERLY SWELL THAT WILL SPREAD INTO NORTHWESTERN CALIFORNIA COASTAL WATERS LATE TONIGHT. WESTERLY WAVES WILL BUILD TONIGHT AND PEAK EARLY FRIDAY MORNING. ANOTHER LARGE WESTERLY SWELL IS EXPECTED THIS WEEKEND. CAZ101-103-104-109-141900- /O.NEW.KEKA.CF.Y.0007.161014T0600Z-161014T1900Z/ /O.EXT.KEKA.SU.Y.0007.161014T0600Z-161014T1900Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 230 PM PDT THU OCT 13 2016 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO NOON PDT FRIDAY... ...HIGH SURF ADVISORY NOW IN EFFECT FROM 11 PM THIS EVENING TO NOON PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A COASTAL FLOOD ADVISORY...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO NOON PDT FRIDAY. * WAVES AND SURF...BREAKING WAVES 17 TO 23 FEET ALONG WEST AND NORTHWEST FACING BEACHES. * IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE INTO THE FRIGID AND TURBULENT OCEAN WATERS. MARINERS TRAVERSING THE BAR ARE URGED TO EXERCISE EXTREME CAUTION. * COASTAL FLOODING AND BEACH EROSION WILL BE POSSIBLE ON FRIDAY DUE TO A COMBINATION OF A HIGH TIDE NEAR 7.5 FEET...A 2 FOOT STORM SURGE...LARGE WESTERLY SWELL AND BEACHES IN THEIR SUMMER SAND PROFILES. HIGH TIDE WILL OCCUR AT 11AM ON FRIDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE. && $$
484 WHUS46 KEKA 141321 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 621 AM PDT FRI OCT 14 2016 ...HIGH SURF EXPECTED TONIGHT THROUGH FRIDAY MORNING... ... COASTAL FLOODING POSSIBLE ON FRIDAY... A STRONG STORM WILL GENERATE LARGE WESTERLY SWELL THAT WILL SPREAD INTO NORTHWESTERN CALIFORNIA COASTAL WATERS LATE TONIGHT. WESTERLY WAVES WILL BUILD TONIGHT AND PEAK EARLY FRIDAY MORNING. ANOTHER LARGE WESTERLY SWELL IS EXPECTED THIS WEEKEND. CAZ101-103-104-109-141900- /O.CON.KEKA.CF.Y.0007.000000T0000Z-161014T1900Z/ /O.CON.KEKA.SU.Y.0007.000000T0000Z-161014T1900Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 621 AM PDT FRI OCT 14 2016 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL NOON PDT TODAY... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL NOON PDT TODAY... * WAVES AND SURF...BREAKING WAVES 17 TO 23 FEET ALONG WEST AND NORTHWEST FACING BEACHES. * IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE INTO THE FRIGID AND TURBULENT OCEAN WATERS. MARINERS TRAVERSING THE BAR ARE URGED TO EXERCISE EXTREME CAUTION. * COASTAL FLOODING AND BEACH EROSION WILL BE POSSIBLE THIS MORNING DUE TO A COMBINATION OF A HIGH TIDE NEAR 7.5 FEET...A STORM SURGE...LARGE WESTERLY SWELL AND BEACHES IN THEIR SUMMER SAND PROFILES. HIGH TIDE WILL OCCUR AT 11AM TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE. && $$
856 WHUS46 KEKA 141334 AAC CFWEKA COASTAL HAZARD MESSAGE...UPDATED NATIONAL WEATHER SERVICE EUREKA CA 634 AM PDT FRI OCT 14 2016 ...HIGH SURF EXPECTED TODAY WITH COASTAL FLOODING POSSIBLE AROUND HIGH TIDE THIS MORNING... A LARGE WESTERLY SWELL WILL IMPACT NORTHWEST CALIFORNIA BEACHES BRINGING THE FIRST BATCH OF HIGH SURF OF THE SEASON. ADDITIONAL WEST SWELL WILL MAINTAIN LARGER BREAKING WAVES THROUGH THE WEEKEND. CAZ101-103-104-109-141900- /O.CON.KEKA.CF.Y.0007.000000T0000Z-161014T1900Z/ /O.CON.KEKA.SU.Y.0007.000000T0000Z-161014T1900Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 634 AM PDT FRI OCT 14 2016 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL NOON PDT TODAY... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL NOON PDT TODAY... * WAVES AND SURF...BREAKING WAVES 17 TO 23 FEET ALONG WEST AND NORTHWEST FACING BEACHES. * IMPACTS...LARGE BREAKING WAVES ALONG THE COAST WILL LEAD TO INCREASED WAVE RUN-UP ON BEACHES WITH WAVES TOPPING AND WASHING OVER LARGE ROCKS AND JETTIES. THESE LARGE WAVES CAN BE ERRATIC AND UNPREDICTABLE. USE EXTRA CAUTION NEAR THE SURF ZONE AS THESE LARGE WAVES WILL BE CAPABLE OF SWEEPING PEOPLE INTO THE FRIGID AND TURBULENT OCEAN WATERS. MARINERS TRAVERSING THE BAR ARE URGED TO EXERCISE EXTREME CAUTION. * COASTAL FLOODING AND BEACH EROSION WILL BE POSSIBLE THIS MORNING DUE TO A COMBINATION OF A HIGH TIDE NEAR 7.5 FEET...A STORM SURGE...LARGE WESTERLY SWELL AND BEACHES IN THEIR SUMMER SAND PROFILES. HIGH TIDE WILL OCCUR AT 11AM TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH EROSION. A COASTAL FLOOD ADVISORY INDICATES THAT ONSHORE WINDS AND TIDES WILL COMBINE TO GENERATE FLOODING OF LOW AREAS ALONG THE SHORE. && $$
549 WHUS46 KEKA 141918 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1218 PM PDT FRI OCT 14 2016 CAZ101-103-104-109-142030- /O.EXP.KEKA.CF.Y.0007.000000T0000Z-161014T1900Z/ /O.EXP.KEKA.SU.Y.0007.000000T0000Z-161014T1900Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 1218 PM PDT FRI OCT 14 2016 ...COASTAL FLOOD ADVISORY HAS EXPIRED... ...HIGH SURF ADVISORY HAS EXPIRED... STRONG SOUTHERLY WINDS IN COMBINATION WITH LARGE WESTERLY SWELL COINCIDENT WITH HIGH TIDE AROUND 1140AM PDT ON SATURDAY MAY RESULT IN MINOR COASTAL FLOODING THROUGH ABOUT 1 PM. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 3:21 AM PDT | Gale Warning | EKA | 45 hr | |
| Oct 12, 3:21 AM PDT | Small Craft Advisory | EKA | 24 hr | |
| Oct 12, 3:21 AM PDT | Storm Warning | EKA | 42 hr | |
| Oct 12, 4:44 AM PDT | High Wind Warning | EKA | Del Norte, Humboldt | 42 hr |
| Oct 12, 4:44 AM PDT | Wind Advisory | EKA | Del Norte, Humboldt | 41 hr |
Nearby
High Surf Advisories in California, 2016Every high surf advisory in 2016
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.