Alert archive / California / High Surf Warnings in 2018
High Surf Warning 2, NWS Eureka, CA
NWS Eureka, CA issued this high surf warning at Dec 14, 2018, 2:17 PM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Dec 16, 2018, 9:00 AM PST. It was in force for 36 hr. 6 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 14, 2018, 2:17 PM PST (22:17 UTC)
- In effect from
- Dec 16, 2018, 9:00 AM PST
- Expired
- Dec 17, 2018, 9:00 PM PST
- In force
- 36 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 22:17 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 16, 10:52 AM PST | NON-TSTM WND DMG | 3 Ene Crescent City, CA | TREE DOWN ON ACROSS ROADWAY. UNKNOWN SIZE. |
| Dec 16, 11:45 AM PST | NON-TSTM WND DMG | Bayview, CA | POWERLINES DOWN IN ROADWAY WITH STRONG WINDS IN THE AREA. |
| Dec 16, 11:55 AM PST | NON-TSTM WND DMG | 1 Sse Leggett, CA | TREES DOWN BLOCKING THE ROADWAY. |
| Dec 16, 11:57 AM PST | NON-TSTM WND DMG | 2 Se Leggett, CA | TWO TREES DOWN ON HWY 271. |
| Dec 16, 12:10 PM PST | NON-TSTM WND DMG | 1 E Ettersburg, CA | TREE DOWN BLOCKING TRAFFIC ON ETTERSBURG ROAD. UNKNOWN SIZE. |
| Dec 16, 12:53 PM PST | NON-TSTM WND DMG | 2 Sse Weitchpec, CA | TREE DOWN ON POWERLINES CLOSING ROADWAY FOR AROUND AN HOUR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 10.3 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
- 2323 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
344 WHUS46 KEKA 142217 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 217 PM PST Fri Dec 14 2018 .Very large, long period westerly swell will cause surf to rapidly increase in height late Sunday morning through Sunday evening along the Northwest California coast. CAZ101-103-104-109-151230- /O.NEW.KEKA.SU.W.0002.181216T1700Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 217 PM PST Fri Dec 14 2018 ...HIGH SURF WARNING IN EFFECT FROM 9 AM SUNDAY TO 9 PM MONDAY... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast during the latter half of the weekend. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf late Sunday morning through Sunday evening with high surf continuing into Monday. * 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 water. Mariners traversing the bar are urged to exercise extreme caution especially during max ebb which is predicted to occur around 900 PM Sunday and 1000 AM Monday, or stay in port until the threat subsides. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
9 follow-up statements
319 WHUS46 KEKA 150840 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1240 AM PST Sat Dec 15 2018 .Very large, long period westerly swell will cause surf to rapidly increase in height late Sunday morning through Sunday evening along the Northwest California coast. CAZ101-103-104-109-152300- /O.CON.KEKA.SU.W.0002.181216T1700Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1240 AM PST Sat Dec 15 2018 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 9 AM SUNDAY TO 9 PM PST MONDAY... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast during the latter half of the weekend. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf late Sunday morning through Sunday evening with high surf continuing into Monday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution especially during max ebb which is predicted to occur around 900 PM Sunday and 1000 AM Monday, or stay in port until the threat subsides. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
220 WHUS46 KEKA 151051 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 251 AM PST Sat Dec 15 2018 .Very large, long period westerly swell will cause surf to rapidly increase in height late Sunday morning through Sunday evening along the Northwest California coast. CAZ101-103-104-109-151900- /O.CON.KEKA.SU.W.0002.181216T1700Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 251 AM PST Sat Dec 15 2018 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 9 AM SUNDAY TO 9 PM PST MONDAY... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast during the latter half of the weekend. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf late Sunday morning through Sunday evening with high surf continuing into Monday. * 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 water. Mariners traversing the bar are urged to exercise extreme caution especially during max ebb which is predicted to occur around 900 PM Sunday and 1000 AM Monday, or stay in port until the threat subsides. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
536 WHUS46 KEKA 151834 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1034 AM PST Sat Dec 15 2018 .Very large, long period westerly swell will cause surf to rapidly increase in height late Sunday morning through Sunday evening along the Northwest California coast. CAZ101-103-104-109-161130- /O.CON.KEKA.SU.W.0002.181216T1700Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1034 AM PST Sat Dec 15 2018 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 9 AM SUNDAY TO 9 PM PST MONDAY... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast during the latter half of the weekend. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf late Sunday morning through Sunday evening with high surf continuing into Monday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution especially during max ebb which is predicted to occur around 900 PM Sunday and 1000 AM Monday, or stay in port until the threat subsides. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
031 WHUS46 KEKA 161353 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 553 AM PST Sun Dec 16 2018 .Very large, long period westerly swell will cause surf to rapidly increase in height late Sunday morning through Sunday evening along the Northwest California coast. CAZ101-103-104-109-162200- /O.CON.KEKA.SU.W.0002.181216T1700Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 553 AM PST Sun Dec 16 2018 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 9 PM PST MONDAY... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast during the latter half of the weekend. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf late this morning through this evening with high surf continuing into Monday. * 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 water. Mariners traversing the bar are urged to exercise extreme caution especially during max ebb which is predicted to occur around 900 PM Sunday and 1000 AM Monday, or stay in port until the threat subsides. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
340 WHUS46 KEKA 162157 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 157 PM PST Sun Dec 16 2018 .Very large, long period westerly swell will cause surf to rapidly increase in height through this evening along the Northwest California coast. CAZ101-103-104-109-171115- /O.CON.KEKA.SU.W.0002.000000T0000Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 157 PM PST Sun Dec 16 2018 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 9 PM PST MONDAY... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast this evening. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf through this evening with high surf continuing into Monday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution especially during max ebb which is predicted to occur around 900 PM Sunday and 1000 AM Monday, or stay in port until the threat subsides. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
752 WHUS46 KEKA 170616 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1016 PM PST Sun Dec 16 2018 .Very large, long period westerly swell will cause surf to rapidly increase in height through this evening along the Northwest California coast. CAZ101-103-104-109-180500- /O.CON.KEKA.SU.W.0002.000000T0000Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1016 PM PST Sun Dec 16 2018 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 9 PM PST MONDAY... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast this evening. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf through this evening with very high surf continuing into Monday...and elevated surf continuing much of the week. * 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 water. Mariners traversing the bar are urged to exercise extreme caution especially during max ebb which is predicted to occur around 900 PM Sunday and 1000 AM Monday, or stay in port until the threat subsides. In addition...please contact the U.S. Coast Guard to determine if the bar is open to mariner traffic. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
455 WHUS46 KEKA 171206 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 406 AM PST Mon Dec 17 2018 CAZ101-103-104-109-172015- /O.CON.KEKA.SU.W.0002.000000T0000Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 406 AM PST Mon Dec 17 2018 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 9 PM PST THIS EVENING... * WAVES AND SURF...Breaking waves rapidly building to around 30 feet along the Northwest California coast today. The highest surf will be along west and northwest facing beaches. * TIMING...Building surf through this evening with very high surf continuing today...and elevated surf continuing much of the week. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. In addition...please contact the U.S. Coast Guard to determine if the bar is open to mariner traffic. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
936 WHUS46 KEKA 172030 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1230 PM PST Mon Dec 17 2018 CAZ101-103-104-109-180500- /O.CON.KEKA.SU.W.0002.000000T0000Z-181218T0500Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1230 PM PST Mon Dec 17 2018 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 9 PM PST THIS EVENING... * WAVES AND SURF...Breaking waves around 25 feet continuing along the Northwest California coast today. The highest surf will be along west and northwest facing beaches. * TIMING...Very high surf continuing through this evening. Surf will subside somewhat tonight but remain elevated for much of the week. * 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 water. In addition... please contact the U.S. Coast Guard to determine if the bar is open to mariner traffic. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Warning indicates that dangerous, battering wave will pound the shoreline. This will result in very dangerous swimming conditions and deadly rip currents. $$
824 WHUS46 KEKA 180457 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 857 PM PST Mon Dec 17 2018 CAZ101-103-104-109-181300- /O.EXP.KEKA.SU.W.0002.000000T0000Z-181218T0500Z/ /O.NEW.KEKA.SU.Y.0005.181218T0500Z-181218T2100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 857 PM PST Mon Dec 17 2018 ...HIGH SURF WARNING REPLACED BY A HIGH SURF ADVISORY IN EFFECT UNTIL 1 PM PST TUESDAY... The National Weather Service in Eureka has issued a High Surf Advisory...which is in effect until 1 PM PST Tuesday. * WAVES AND SURF...Breaking waves 18 to 24 feet along west and northwest facing beaches. * TIMING...While breaking wave heights will gradually reduce...waves will remain large and hazardous through much of the day Tuesday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution...or stay in port until the threat subsides. In addition... please contact the U.S. Coast Guard to determine if the bar is open to mariner traffic. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 14, 2:23 PM PST | Gale Watch | EKA | 12 hr | |
| Dec 14, 2:23 PM PST | Gale Warning | EKA | 47 hr | |
| Dec 14, 2:23 PM PST | Hazardous Seas Warning | EKA | 12 hr |
Nearby
High Surf Warnings in California, 2018Every high surf warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.