Alert archive / California / High Surf Advisories in 2019
High Surf Advisory 3, NWS Eureka, CA
NWS Eureka, CA issued this high surf advisory at Feb 14, 2019, 3:53 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Feb 15, 2019, 3:00 AM PST. It was in force for 32 hr.
The area
The counties it named.
The facts
- Issued
- Feb 14, 2019, 3:53 AM PST (11:53 UTC)
- In effect from
- Feb 15, 2019, 3:00 AM PST
- Expired
- Feb 16, 2019, 11:00 AM PST
- In force
- 32 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 11:52 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 00:00Z, 11.9 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
- 620 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 280 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
700 WHUS46 KEKA 141153 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 353 AM PST Thu Feb 14 2019 .Heavy west-northwest swell will reach the northwest California coast late tonight or very early Friday morning, resulting in large breaking waves Friday into Saturday morning. CAZ101-103-104-109-142000- /O.NEW.KEKA.SU.Y.0003.190215T1100Z-190216T1100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 353 AM PST Thu Feb 14 2019 ...HIGH SURF ADVISORY IN EFFECT FROM 3 AM FRIDAY TO 3 AM PST SATURDAY... The National Weather Service in Eureka has issued a High Surf Advisory...which is in effect from 3 AM Friday to 3 AM PST Saturday. * WAVES AND SURF...Breaking waves 21 to 24 feet along west and northwest facing beaches. * TIMING...Surf will build overnight tonight into early Friday, peaking Friday night, then subsiding on Saturday. * 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. 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. && $$
11 follow-up statements
531 WHUS46 KEKA 141336 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 536 AM PST Thu Feb 14 2019 .Heavy west-northwest swell will reach the northwest California coast late tonight or very early Friday morning, resulting in large breaking waves Friday into Saturday morning. CAZ103-142145- /O.NEW.KEKA.CF.Y.0010.190214T1336Z-190214T1600Z/ /O.CON.KEKA.SU.Y.0003.190215T1100Z-190216T1100Z/ Northern Humboldt Coast- 536 AM PST Thu Feb 14 2019 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 8 AM PST THIS MORNING... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM PST SATURDAY... The National Weather Service in Eureka has issued a Coastal Flood Advisory...which is in effect until 8 AM PST this morning. * WAVES AND SURF...Breaking waves 21 to 24 feet along west and northwest facing beaches. * TIMING...Surf will build overnight tonight into early Friday, peaking Friday night, then subsiding on Saturday. * COASTAL FLOODING...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 9.1 feet MLLW at the north spit tide gauge). * TIMING...High tide is at 6:18 AM at the Humboldt Bay north spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Low lying areas will experience minor flooding including...but not limited to roadways in King Salmon and the Arcata bottoms. * 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. 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. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. && $$ CAZ101-104-109-142145- /O.CON.KEKA.SU.Y.0003.190215T1100Z-190216T1100Z/ Coastal Del Norte-Southwestern Humboldt-Mendocino Coast- 536 AM PST Thu Feb 14 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 24 feet along west and northwest facing beaches. * TIMING...Surf will build overnight tonight into early Friday, peaking Friday night, then subsiding on Saturday. * 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. 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. && $$
671 WHUS46 KEKA 141550 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 750 AM PST Thu Feb 14 2019 .Heavy west-northwest swell will reach the northwest California coast late tonight or very early Friday morning, resulting in large breaking waves Friday into Saturday morning. CAZ103-150000- /O.EXP.KEKA.CF.Y.0010.000000T0000Z-190214T1600Z/ /O.CON.KEKA.SU.Y.0003.190215T1100Z-190216T1100Z/ Northern Humboldt Coast- 750 AM PST Thu Feb 14 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM PST SATURDAY... ...COASTAL FLOOD ADVISORY WILL EXPIRE AT 8 AM PST THIS MORNING... * WAVES AND SURF...Breaking waves 21 to 24 feet along west and northwest facing beaches. * TIMING...Surf will build overnight tonight into early Friday, peaking Friday night, then subsiding on Saturday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. && $$ CAZ101-104-109-150000- /O.CON.KEKA.SU.Y.0003.190215T1100Z-190216T1100Z/ Coastal Del Norte-Southwestern Humboldt-Mendocino Coast- 750 AM PST Thu Feb 14 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 24 feet along west and northwest facing beaches. * TIMING...Surf will build overnight tonight into early Friday, peaking Friday night, then subsiding on Saturday. * 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. 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. && $$
972 WHUS46 KEKA 142346 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 346 PM PST Thu Feb 14 2019 .Heavy west-northwest swell will reach the northwest California coast late tonight or very early Friday morning, resulting in large breaking waves Friday into Saturday morning. CAZ101-103-104-109-150800- /O.CON.KEKA.SU.Y.0003.190215T1100Z-190216T1100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 346 PM PST Thu Feb 14 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will build overnight tonight into early Friday, peaking Friday night, then subsiding on Saturday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. && $$
051 WHUS46 KEKA 150603 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1003 PM PST Thu Feb 14 2019 .Heavy west-northwest swell will reach the northwest California coast late tonight or very early Friday morning, resulting in large breaking waves Friday into Saturday morning. CAZ101-103-104-109-151415- /O.CON.KEKA.SU.Y.0003.190215T1100Z-190216T1100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1003 PM PST Thu Feb 14 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO 3 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will build overnight tonight into early Friday, peaking Friday night, then subsiding on Saturday. * 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. 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. && $$
652 WHUS46 KEKA 151103 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 303 AM PST Fri Feb 15 2019 .Large west-northwest swell will reach the northwest California coast early this morning, resulting in large breaking waves lasting through tonight and into Saturday morning. Additionally, an anomalously high tide will combine with the surf to result in localized coastal flooding this morning. CAZ103-151700- /O.NEW.KEKA.CF.Y.0011.190215T1400Z-190215T1700Z/ /O.EXT.KEKA.SU.Y.0003.000000T0000Z-190216T1700Z/ Northern Humboldt Coast- 303 AM PST Fri Feb 15 2019 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 9 AM PST SATURDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 6 AM TO 9 AM PST THIS MORNING... The National Weather Service in Eureka has issued a Coastal Flood Advisory...which is in effect from 6 AM to 9 AM PST this morning. * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will build quickly this morning, peaking tonight, then subsiding on Saturday. * 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. * COASTAL FLOODING...High astronomical tides and a large tidal anomaly will cause minor flooding in low lying areas around Humboldt Bay. 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). * TIMING...High tide is at 7:04 AM at the Humboldt Bay north spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Low lying areas will experience minor flooding including...but not limited to... roadways in King Salmon and the Arcata bottoms. The combination of high surf and high tides may allow waves to wash over New Navy Base Road in Samoa. 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. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. && $$ CAZ101-104-109-151700- /O.EXT.KEKA.SU.Y.0003.000000T0000Z-190216T1700Z/ Coastal Del Norte-Southwestern Humboldt-Mendocino Coast- 303 AM PST Fri Feb 15 2019 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 9 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will build quickly this morning, peaking tonight, then subsiding on Saturday. * 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. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. 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. && $$
706 WHUS46 KEKA 151700 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 900 AM PST Fri Feb 15 2019 .Large west-northwest swell will reach the northwest California coast early this morning, resulting in large breaking waves lasting through tonight and into Saturday morning. Additionally, an anomalously high tide will combine with the surf to result in localized coastal flooding this morning. CAZ103-160100- /O.EXP.KEKA.CF.Y.0011.000000T0000Z-190215T1700Z/ /O.CON.KEKA.SU.Y.0003.000000T0000Z-190216T1700Z/ Northern Humboldt Coast- 900 AM PST Fri Feb 15 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will continue to build this morning, peaking tonight, then subsiding on Saturday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. && $$ CAZ101-104-109-160100- /O.CON.KEKA.SU.Y.0003.000000T0000Z-190216T1700Z/ Coastal Del Norte-Southwestern Humboldt-Mendocino Coast- 900 AM PST Fri Feb 15 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will continue to build this morning, peaking tonight, then subsiding on Saturday. * 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. 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. 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. && $$
536 WHUS46 KEKA 152224 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 224 PM PST Fri Feb 15 2019 .Large west-northwest swell is moving through the waters this afternoon resulting in large breaking waves lasting through tonight and into Saturday morning. CAZ101-103-104-109-160630- /O.CON.KEKA.SU.Y.0003.000000T0000Z-190216T1700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 224 PM PST Fri Feb 15 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will continue to build this afternoon, peaking tonight, then subsiding on Saturday. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. && $$
706 WHUS46 KEKA 160354 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 754 PM PST Fri Feb 15 2019 .A large west-northwest swell will move through the waters tonight into Saturday morning resulting in large breaking waves. CAZ101-103-104-109-161200- /O.CON.KEKA.SU.Y.0003.000000T0000Z-190216T1700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 754 PM PST Fri Feb 15 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST SATURDAY... * WAVES AND SURF...Breaking waves 21 to 25 feet along west and northwest facing beaches. * TIMING...Surf will peak tonight, then subside on Saturday. * 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. 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. 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. && $$
440 WHUS46 KEKA 161146 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 346 AM PST Sat Feb 16 2019 .A large west-northwest swell will continue early this morning resulting in large breaking waves. CAZ101-103-104-109-161700- /O.CON.KEKA.SU.Y.0003.000000T0000Z-190216T1700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 346 AM PST Sat Feb 16 2019 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * WAVES AND SURF...Breaking waves 18 to 22 feet along west and northwest facing beaches. * TIMING...Surf will be highest early this morning, subsiding through the weekend. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. && $$
614 WHUS46 KEKA 161648 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 848 AM PST Sat Feb 16 2019 .A large west-northwest swell will continue early this morning resulting in large breaking waves. CAZ101-103-104-109-161900- /O.EXT.KEKA.SU.Y.0003.000000T0000Z-190216T1900Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 848 AM PST Sat Feb 16 2019 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 11 AM PST THIS MORNING... * WAVES AND SURF...Breaking waves 18 to 22 feet along west and northwest facing beaches. * TIMING...Surf will be highest early this morning, subsiding through the weekend. * 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. 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. 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. && $$
248 WHUS46 KEKA 161902 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1102 AM PST Sat Feb 16 2019 .A large west-northwest swell will continue early this morning resulting in large breaking waves. CAZ104-109-170000- /O.EXP.KEKA.SU.Y.0003.000000T0000Z-190216T1900Z/ /O.NEW.KEKA.SU.Y.0004.190216T1902Z-190217T0000Z/ Southwestern Humboldt-Mendocino Coast- 1102 AM PST Sat Feb 16 2019 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * WAVES AND SURF...Breaking waves 18 to 22 feet along west and northwest facing beaches. * TIMING...Surf will be highest early this morning, subsiding through the weekend. * IMPACTS...Large breaking waves along the coast will lead to increased wave run-up on beaches with waves topping and washing over large rocks and jetties. These large waves can be erratic and unpredictable. Use extra caution near the surf zone as these large waves will be capable of sweeping people into the frigid and turbulent ocean water. Mariners traversing the bar are urged to exercise extreme caution or stay in port until the threat subsides. Please contact the U.S. Coast Guard for information regarding harbor and bar closures. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Surf Advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. && $$ CAZ101-103-162015- /O.EXP.KEKA.SU.Y.0003.000000T0000Z-190216T1900Z/ Coastal Del Norte-Northern Humboldt Coast- 1102 AM PST Sat Feb 16 2019 ...HIGH SURF ADVISORY HAS EXPIRED... $$
What forecasters said that day
The local office's own words before this high surf advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Eureka, CA wrote its last area forecast discussion before this high surf advisory went out at Feb 13, 3:57 PM PST, 11 hours 56 minutes earlier.
Area forecast discussion, Feb 13, 3:57 PM PST, 11 hours 56 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
357 PM PST Wed Feb 13 2019
.SYNOPSIS...Moderate to heavy rain will overspread the area
tonight persisting through Thursday. A colder airmass will move
over the region late on Thursday, which will lower temperatures
and snow levels. Rain and snow showers will continue through the
weekend.
&&
.DISCUSSION...A bit of instability primarily across the southern
half of the forecast area has been sufficient enough to produce a
few lightning flashes and strikes this afternoon. Isolated thunder
chances will remain possible through late this evening before the
main belt of instability moves south and east of the area late
tonight.
A series of systems will impact NW CA through the end of the week
and into the weekend. First wave will impact the region tonight
into Thursday leading to periods of moderate to potentially heavy
rain especially across Mendocino County through Thursday
afternoon. Snow levels will be generally above 6000 feet through
Thursday afternoon limiting new snowfall during this period. The
downside to such high snow levels will be the exacerbation of
small creek and stream flooding concerns from rapid snow melt,
where the warmer rain falls on the more recent lower level
snow pack. Temperatures will begin to drop Thursday night behind
a cold front that will move through the area allowing snow levels
to begin to rapidly descend into the early morning hours of Friday
back to near 2500 feet. As temperatures aloft cool behind the
cold front, instability will build leading to a slight chance of
thunderstorms across the waters and coastal locations as well as
Mendocino County. With the lower snow levels any stronger showers
or thunderstorms will be capable of producing accumulating small
hail on area roadways.
Yet another system is expected to impact the region Friday night
into Saturday which will bring another round of rain and snow
showers to the area with accumulating snowfall remaining generally
above 2500 feet. Heavy showers may be able to drop snow levels
even lower briefly however heavy accumulations are not expected.
Weaker systems may impact the area Saturday and Sunday when even
lower snow levels are expected across the interior down to near
1000 feet however confidence in the strength of the precipitation
during this time is still in question. If you have travel plans
across the interior this weekend make sure to stay up to date for
changes and updates to the winter weather products currently out.
Weak high pressure will build into the area early next week which
may bring a brief break in the rain and snow showers Monday and
Tuesday. The cold airmass will remain in place, so with clearing
skies overnight lows may be quiet cold across the entire region
with near to slightly below freezing temperatures along the coast
with even lower temperatures inland. /WCI
&&
.AVIATION...Periods of rain has been producing periodic MVFR
visibility and ceiling reductions at most all forecast terminals
today. Conditions will remain unchanged tonight. Potential for low
level wind shear will increase after 06z at KUKI tonight and perhaps
spread northward on Thu. Blustery westerly winds and a cold
unstable air mass will spread into the area on Thu.
&&
.MARINE...Another low pressure system will develop south of Cape
Mendocino tonight, resulting in another round of robust southerly
winds across Mendocino waters. Winds are expected to rapidly shift
around to the west behind this low pressure system on Thu, with
blustery gale force gusts expected across all the waters by mid
morning. A large NW swell around 20 feet will build on Friday and
combine with shorter period wind waves resulting in seas around 24
to 26 ft.
Previous marine discussion follows: A large northwesterly swell is
expected to move through the waters Friday, likely arriving with a
height of 20 to 24 feet at 16 seconds. This will result in very
large breaking waves in the Humboldt Bay Bar, and will also result
in increased shoaling and hazardous surf conditions. This large
swell will continue through Saturday morning before subsiding
Saturday afternoon and evening.
&&
.HYDROLOGY...Periods of moderate to heavy rain are likely through
Thursday as an atmospheric river interacts with several
disturbances. Small stream, urban, and main stem flooding will be
possible. The Navarro River is forecast to reach flood stage late
this evening, which may cause Highway 128 to flood. The Russian
River at Hopland is expected to crest above 17 feet Thursday
morning, which could flood Highway 175. The Eel River at
Fernbridge is expected to reach flood stage Thursday afternoon.
And the Garcia River is forecast to crest near 13 feet Thursday
morning. In addition, small streams may experience flooding,
particularly in Mendocino county. Due to the higher snow levels
with this system rapid snow melt from the previous weather systems
may enhance the amount of runoff. Please reference valid
Flood/Hydro Watch/Warning/Advisory statements for more
information.
&&
.BEACH HAZARDS...A W-NW swell from 20-22 ft will bring a threat
for high surf, with breakers from 22-26 feet, Friday through
Saturday. Beachgoers and mariners will need to stay tuned to the
forecast and possible surf warnings or advisories as we head into
the latter portion of the week. High tide is forecast to occur
around 7am on Friday, however the swell is currently forecast to
peak Friday afternoon and evening. The possibility for coastal
flooding will need to be considered if the tidal anomaly grows
larger. The threat for hazardous surf may continue on Saturday.
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...Flood Watch through Thursday afternoon for CAZ103>106-109>113.
Flood Watch from 10 PM PST this evening through Thursday
afternoon for CAZ107-108.
Winter Storm Warning from 10 PM Thursday to 10 AM PST Friday for
CAZ102-105>108.
NORTHWEST CALIFORNIA COASTAL WATERS...Small Craft Advisory from 8 AM Thursday to 4 AM PST Friday for
PZZ450.
Small Craft Advisory until 8 AM PST Thursday for PZZ470.
Gale Warning from 8 AM to 3 PM PST Thursday for PZZ470.
Small Craft Advisory until 2 AM PST Thursday for PZZ455-475.
Gale Warning from 2 AM to 3 PM PST Thursday for PZZ455-475.
&&
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For forecast zone information
see the forecast zone map online:
http://www.weather.gov/eureka/zonemap.pngHazardous weather outlook, Feb 13, 4:52 PM PST, 11 hours 1 minute before
Hazardous Weather Outlook National Weather Service Eureka CA 452 PM PST Wed Feb 13 2019 CAZ103-104-109-110-112-113-150100- Northern Humboldt Coast-Southwestern Humboldt-Mendocino Coast- Northwestern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 452 PM PST Wed Feb 13 2019 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON... This hazardous weather outlook is for northwest California. .DAY ONE...Tonight. A Flood Watch is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A Flood Watch is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ101-150100- Coastal Del Norte- 452 PM PST Wed Feb 13 2019 This hazardous weather outlook is for northwest California. .DAY ONE...Tonight. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ106-111-150100- Southern Humboldt Interior-Northeastern Mendocino Interior- 452 PM PST Wed Feb 13 2019 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON... ...WINTER STORM WARNING IN EFFECT FROM 4 PM THURSDAY TO 10 PM PST FRIDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Tonight. A Flood Watch is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A Flood Watch is currently in effect. A Winter Storm Warning is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ102-150100- Del Norte Interior- 452 PM PST Wed Feb 13 2019 ...WINTER STORM WARNING IN EFFECT FROM 4 PM THURSDAY TO 10 PM PST FRIDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Tonight. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A Winter Storm Warning is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ105-150100- Northern Humboldt Interior- 452 PM PST Wed Feb 13 2019 ...FLOOD WATCH IN EFFECT THROUGH THURSDAY AFTERNOON... ...WINTER STORM WARNING IN EFFECT FROM 4 PM THURSDAY TO 10 PM PST FRIDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Tonight. A Flood Watch is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A Flood Watch is currently in effect. A Winter Storm Warning is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ107-108-150100- Northern Trinity-Southern Trinity- 452 PM PST Wed Feb 13 2019 ...FLOOD WATCH IN EFFECT FROM 10 PM PST THIS EVENING THROUGH THURSDAY AFTERNOON... ...WINTER STORM WARNING IN EFFECT FROM 4 PM THURSDAY TO 10 PM PST FRIDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Tonight. A Flood Watch is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A Flood Watch is currently in effect. A Winter Storm Warning is currently in effect. A storm system will yield rain, high mountain snow, thunderstorms and hail, and gusty winds through the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 3:42 AM PST | Hazardous Seas Warning | EKA | 47 hr | |
| Feb 14, 5:36 AM PST | Coastal Flood Advisory | EKA | Humboldt | 2 hr |
Nearby
High Surf Advisories in California, 2019Every high surf advisory in 2019
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.