Alert archive / California / High Surf Warnings in 2021
High Surf Warning 1, NWS Eureka, CA
NWS Eureka, CA issued this high surf warning at Jan 9, 2021, 4:39 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Jan 10, 2021, 3:00 AM PST. It was in force for 15 hr. 3 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
- Jan 9, 2021, 4:39 AM PST (12:39 UTC)
- In effect from
- Jan 10, 2021, 3:00 AM PST
- Expired
- Jan 10, 2021, 6:00 PM PST
- In force
- 15 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 12:39 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 |
|---|---|---|---|
| Jan 10, 8:45 AM PST | HIGH SURF | 1 Sw Westhaven-Moonston, CA | LARGE WAVES WASHED INTO THE PARKING LOT AT MOONSTONE BEACH. |
| Jan 10, 8:45 AM PST | HIGH SURF | 1 Wsw Fairhaven, CA | WAVES WASHING ONTO NEW NAVY BASE ROAD JUST BEFORE THE COAST GUARD STATION IN SEVERAL LOCATIONS. |
| Jan 10, 8:45 AM PST | HIGH SURF | 5 W Ferndale, CA | LARGE SURF IS COMING OVER CENTERVILLE BEACH ROAD AND PUSHING SAND ONTO THE ROAD. ROAD IS CURRENTLY CLOSED. |
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, 0.7 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
- 640 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
151 WHUS46 KEKA 091239 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 439 AM PST Sat Jan 9 2021 CAZ101-092045- /O.NEW.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ /O.CON.KEKA.CF.A.0001.210110T1100Z-210110T1800Z/ Coastal Del Norte- 439 AM PST Sat Jan 9 2021 ...HIGH SURF WARNING IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING... * WHAT...For the High Surf Warning, dangerously large breaking waves of 28 to 30 feet. For the Coastal Flood Watch, high astronomical tides combined with the high surf may result in up to one foot of saltwater inundation above ground level in low lying areas near shorelines and tidal waterways (between 8.7 and 8.9 feet MLLW at the Crescent City tide gauge). * WHERE...Coastal Del Norte County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Watch, from late tonight through Sunday morning. * IMPACTS...Highway 101 at South Beach may see waves break over the road at high tide. Any low lying property in this area may be inundated. Some shoreline erosion may occur. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ103-104-092045- /O.NEW.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ /O.CON.KEKA.CF.A.0001.210110T1100Z-210110T1800Z/ Northern Humboldt Coast-Southwestern Humboldt- 439 AM PST Sat Jan 9 2021 ...HIGH SURF WARNING IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING... * WHAT...For the High Surf Warning, dangerously large breaking waves of 28 to 30 feet. For the Coastal Flood Watch, high astronomical tides combined with the high surf may result in up to one foot of saltwater inundation above ground level in low lying areas near shorelines and tidal waterways (between 8.8 and 9.0 feet MLLW at the North Spit tide gauge). * WHERE...Coastal Humboldt County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Watch, from late tonight through Sunday morning. * IMPACTS...Centerville Beach Road, New Navy Base Road and possibly other exposed coastal roads may see waves break over the road at high tide. Other low-lying roads around King Salmon and the Arcata Bottoms may be partially inundated. Some shoreline erosion may occur. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ109-092045- /O.NEW.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ Mendocino Coast- 439 AM PST Sat Jan 9 2021 ...HIGH SURF WARNING IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... * WHAT...Dangerously large breaking waves of 26 to 28 feet. * WHERE...Coastal Mendocino County. * WHEN...From 3 AM to 6 PM PST Sunday. * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. Additionally, be aware of high astronomical tides Sunday morning, allowing some of the breaking waves to wash much farther up beaches and possibly approaching some low-lying beach-side roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$
6 follow-up statements
227 WHUS46 KEKA 091613 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 813 AM PST Sat Jan 9 2021 CAZ101-100015- /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ /O.CON.KEKA.CF.A.0001.210110T1100Z-210110T1800Z/ Coastal Del Norte- 813 AM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING... * WHAT...For the High Surf Warning, dangerously large breaking waves of 28 to 30 feet. For the Coastal Flood Watch, high astronomical tides combined with the high surf may result in up to a half foot of saltwater inundation above ground level in low lying areas near shorelines and tidal waterways (between 8.7 and 8.9 feet MLLW at the Crescent City tide gauge). * WHERE...Coastal Del Norte County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Watch, from late tonight through Sunday morning. * IMPACTS...Highway 101 at South Beach may see waves break over the road at high tide. Any low lying property in this area may be inundated. Some shoreline erosion may occur. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ103-104-100015- /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ /O.CON.KEKA.CF.A.0001.210110T1100Z-210110T1800Z/ Northern Humboldt Coast-Southwestern Humboldt- 813 AM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING... * WHAT...For the High Surf Warning, dangerously large breaking waves of 28 to 30 feet. For the Coastal Flood Watch, high astronomical tides combined with the high surf may result in up to a half foot of saltwater inundation above ground level in low lying areas near shorelines and tidal waterways (between 8.8 and 9.0 feet MLLW at the North Spit tide gauge). * WHERE...Coastal Humboldt County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Watch, from late tonight through Sunday morning. * IMPACTS...Centerville Beach Road, New Navy Base Road and possibly other exposed coastal roads may see waves break over the road at high tide. Other low-lying roads around King Salmon and the Arcata Bottoms may be partially inundated. Some shoreline erosion may occur. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ109-100015- /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ Mendocino Coast- 813 AM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... * WHAT...Dangerously large breaking waves of 26 to 28 feet. * WHERE...Coastal Mendocino County. * WHEN...From 3 AM to 6 PM PST Sunday. * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...Be aware of high astronomical tides Sunday morning, allowing some of the breaking waves to wash much farther up beaches and possibly over some low-lying beach-side roadways or parking lots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$
819 WHUS46 KEKA 092224 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 224 PM PST Sat Jan 9 2021 ...Very large surf and high tides Sunday morning... Late tonight large long period waves will bring large breaking surf to the coast. These breakers are expected to peak Sunday morning about 30 feet and slowly diminish in the afternoon evening. This will coincide with a high astronomical tide and small amount of surge to produce some minor coastal flooding. Large waves may wash over vulnerable coastal roads. CAZ104-100630- /O.CAN.KEKA.CF.A.0001.210110T1100Z-210110T1800Z/ /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ Southwestern Humboldt- 224 PM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD WATCH IS CANCELLED... * WHAT...Dangerously large breaking waves of 28 to 30 feet. * WHERE...Southwestern Humboldt County. * WHEN...From 3 AM to 6 PM PST Sunday.. . * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ101-100630- /O.UPG.KEKA.CF.A.0001.210110T1100Z-210110T1800Z/ /O.NEW.KEKA.CF.Y.0001.210110T1500Z-210110T1900Z/ /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ Coastal Del Norte- 224 PM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 AM TO 11 AM PST SUNDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 25 to 30 feet. For the Coastal Flood Advisory, High astronomical tides combined with high surf will cause minor flooding in low lying areas along the Del Norte Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways (Between 8.7 and 8.9 feet MLLW at the Crescent City tide gauge). * WHERE...Coastal Del Norte County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Advisory, from 7 AM to 11 AM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. This may include Anchor Way near the Crescent City Harbor. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...It is possible a few waves will break onto the edge of Highway 101 at South Beach near Crescent City. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ103-100630- /O.UPG.KEKA.CF.A.0001.210110T1100Z-210110T1800Z/ /O.NEW.KEKA.CF.Y.0001.210110T1500Z-210110T1900Z/ /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ Northern Humboldt Coast- 224 PM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 AM TO 11 AM PST SUNDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 25 to 30 feet. For the Coastal Flood Advisory, High astronomical tides will cause minor flooding in low lying areas along the Redwood Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways (Between 8.8 and 9.0 feet MLLW at the North spit tide gauge). * WHERE...Northern Humboldt Coast County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Advisory, from 7 AM to 11 AM PST Sunday.. . * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...The low lying areas around King Salmon and in the Arcata Bottoms may see minor saltwater flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ109-100630- /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ Mendocino Coast- 224 PM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... * WHAT...Dangerously large breaking waves 25 to 30 feet. * WHERE...Mendocino Coast County. * WHEN...From 3 AM to 6 PM PST Sunday.. . * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...It is possible a few of the largest waves may reach parking lots or minor roads very close to sea level. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$
958 WHUS46 KEKA 100449 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 849 PM PST Sat Jan 9 2021 ...Very large surf and high tides Sunday morning... Large long period waves will bring large breaking surf to the coast late tonight. These breakers are expected to peak during Sunday at around 30 feet and slowly diminish in the evening. Large waves will coincide with a high astronomical tide in the morning, along with a small amount of surge, to produce some minor coastal flooding. Large waves may wash over vulnerable coastal roads as well. CAZ101-101300- /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ /O.CON.KEKA.CF.Y.0001.210110T1500Z-210110T1900Z/ Coastal Del Norte- 849 PM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 7 AM TO 11 AM PST SUNDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 25 to 30 feet. For the Coastal Flood Advisory, High astronomical tides combined with high surf will cause minor flooding in low lying areas along the Del Norte Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways (Between 8.7 and 8.9 feet MLLW at the Crescent City tide gauge). * WHERE...Coastal Del Norte County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Advisory, from 7 AM to 11 AM PST Sunday.. . * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...It is possible a few waves will break onto the edge of Highway 101 at South Beach near Crescent City. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ103-101300- /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ /O.CON.KEKA.CF.Y.0001.210110T1500Z-210110T1900Z/ Northern Humboldt Coast- 849 PM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 7 AM TO 11 AM PST SUNDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 25 to 30 feet. For the Coastal Flood Advisory, High astronomical tides will cause minor flooding in low lying areas along the Redwood Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways (Between 8.8 and 9.0 feet MLLW at the North spit tide gauge). * WHERE...Northern Humboldt Coast County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Advisory, from 7 AM to 11 AM PST Sunday.. . * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...The low lying areas around King Salmon and in the Arcata Bottoms may see minor saltwater flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ104-109-101300- /O.CON.KEKA.SU.W.0001.210110T1100Z-210111T0200Z/ Southwestern Humboldt-Mendocino Coast- 849 PM PST Sat Jan 9 2021 ...HIGH SURF WARNING REMAINS IN EFFECT FROM 3 AM TO 6 PM PST SUNDAY... * WHAT...Dangerously large breaking waves 25 to 30 feet. * WHERE...Mendocino Coast and Southwestern Humboldt Counties. * WHEN...From 3 AM to 6 PM PST Sunday.. . * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...It is possible a few of the largest waves may reach parking lots or minor roads very close to sea level. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$
829 WHUS46 KEKA 101203 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 403 AM PST Sun Jan 10 2021 ...Very large surf and high tides Sunday morning... Large long period waves will bring large breaking surf to the coast today, peaking at around 30 feet and slowly diminishing in the evening. Large waves will coincide with a high astronomical tide this morning, along with a small amount of surge, to produce some minor coastal flooding. Large waves may wash over vulnerable coastal roads as well. CAZ101-102015- /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ /O.CON.KEKA.CF.Y.0001.210110T1500Z-210110T1900Z/ Coastal Del Norte- 403 AM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 7 AM TO 11 AM PST THIS MORNING... * WHAT...For the High Surf Warning, dangerously large breaking waves of 25 to 30 feet. For the Coastal Flood Advisory, High astronomical tides combined with high surf may cause minor flooding in low lying areas along the Del Norte Coast, particularly around South Beach. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways (Between 8.0 and 8.2 feet MLLW at the Crescent City tide gauge). * WHERE...Coastal Del Norte County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Advisory, from 7 AM to 11 AM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated lane or road closures possible, mainly in the vicinity of South beach near Crescent City. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...It is possible a few waves will break onto the edge of Highway 101 at South Beach near Crescent City. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ103-102015- /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ /O.CON.KEKA.CF.Y.0001.210110T1500Z-210110T1900Z/ Northern Humboldt Coast- 403 AM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 7 AM TO 11 AM PST THIS MORNING... * WHAT...For the High Surf Warning, dangerously large breaking waves of 25 to 30 feet. For the Coastal Flood Advisory, High astronomical tides will cause minor flooding in low lying areas along the Redwood Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines where waves wash over. (Between 8.5 and 8.7 feet MLLW at the North spit tide gauge). * WHERE...Northern Humboldt Coast County. * WHEN...For the High Surf Warning, from 3 AM to 6 PM PST Sunday. For the Coastal Flood Advisory, from 7 AM to 11 AM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures possible. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...Vulnerable spots like the road near Centerville Beach and the lowest-lying portions of New Navy Base Road past Fairhaven may see waves wash up to the roadway. The low lying areas around King Salmon and in the Arcata Bottoms may see very minor saltwater flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ104-109-102015- /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ Southwestern Humboldt-Mendocino Coast- 403 AM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WHAT...Dangerously large breaking waves 25 to 30 feet. * WHERE...Mendocino Coast and Southwestern Humboldt Counties. * WHEN...From 3 AM to 6 PM PST Sunday. * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...It is possible a few of the largest waves may reach beach parking lots or roads very close to sea level. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$
730 WHUS46 KEKA 101849 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1049 AM PST Sun Jan 10 2021 ...Very large surf and high tides Sunday morning... Large long period waves will bring large breaking surf to the coast today, peaking at around 30 feet and slowly diminishing in the evening. Large waves will coincide with a high astronomical tide this morning, along with a small amount of surge, to produce some minor coastal flooding. Large waves may wash over vulnerable coastal roads as well. CAZ101-110200- /O.EXP.KEKA.CF.Y.0001.000000T0000Z-210110T1900Z/ /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ Coastal Del Norte- 1049 AM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... ...COASTAL FLOOD ADVISORY WILL EXPIRE AT 11 AM PST THIS MORNING... * WHAT...Dangerously large breaking waves 28 to 30 feet. * WHERE...Coastal Del Norte County. * WHEN...From 3 AM to 6 PM PST Sunday. Waves will peak midday and diminish through the afternoon. * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...Larger sets of waves are possible at any times, stay off rocks and jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ103-110200- /O.EXP.KEKA.CF.Y.0001.000000T0000Z-210110T1900Z/ /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ Northern Humboldt Coast- 1049 AM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... ...COASTAL FLOOD ADVISORY WILL EXPIRE AT 11 AM PST THIS MORNING... * WHAT...Dangerously large breaking waves 28 to 30 feet. * WHERE...Northern Humboldt Coast County. * WHEN...From 3 AM to 6 PM PST Sunday. Waves will peak midday and diminish through the afternoon. * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...Larger sets of waves are possible at any times, stay off rocks and jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ104-109-110200- /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ Southwestern Humboldt-Mendocino Coast- 1049 AM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WHAT...Dangerously large breaking waves 25 to 30 feet. * WHERE...Mendocino Coast and Southwestern Humboldt Counties. * WHEN...From 3 AM to 6 PM PST Sunday. Waves will peak midday and diminish through the afternoon. * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...Larger sets of waves are possible at any times, stay off rocks and jetties. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$
838 WHUS46 KEKA 102212 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 212 PM PST Sun Jan 10 2021 ...High tides Monday morning... Large long period waves will bring large breaking surf will slowly diminish tonight. Southerly winds will continue and will elevate tide levels inside Humboldt Bay. This will likely cause minor flooding around the Bay. Strong winds, large surf and high tides will likely bring another round of coastal flooding Tuesday. Large waves may wash over vulnerable coastal roads again. CAZ103-110615- /O.NEW.KEKA.CF.Y.0002.210111T1600Z-210111T1900Z/ /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ Northern Humboldt Coast- 212 PM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 AM TO 11 AM PST MONDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves 25 to 30 feet. For the Coastal Flood Advisory, High astronomical tides will cause minor flooding in low lying areas along the Redwood Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways (Between 8.8 and 8.9 feet MLLW at the North Spit tide gauge). * WHERE...Northern Humboldt Coast County. * WHEN...For the High Surf Warning, until 6 PM PST this evening. For the Coastal Flood Advisory, from 8 AM to 11 AM PST Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening surfing conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...Monday morning coastal flooding is expected on Jackson Ranch road in the Arcata Bottoms and in King Salmon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$ CAZ101-104-109-110200- /O.CON.KEKA.SU.W.0001.000000T0000Z-210111T0200Z/ Coastal Del Norte-Southwestern Humboldt-Mendocino Coast- 212 PM PST Sun Jan 10 2021 ...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WHAT...Dangerously large breaking waves 24 to 28 feet. * WHERE...Coastal Del Norte, Mendocino Coast and Southwestern Humboldt Counties. * WHEN...Until 6 PM PST this evening.. . * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surfing conditions and significant beach erosion can be expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 9, 12:02 PM PST | Small Craft Advisory | EKA | 15 hr | |
| Jan 9, 12:02 PM PST | Hazardous Seas Warning | EKA | 33 hr | |
| Jan 9, 2:24 PM PST | Coastal Flood Advisory | EKA | Del Norte, Humboldt | 21 hr |
Nearby
High Surf Warnings in California, 2021Every high surf warning in 2021
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.