Alert archive / California / Wind Advisories in 2017

Wind Advisory 24, NWS Eureka, CA

April 6, 2017Del Norte County, Humboldt County, California

NWS Eureka, CA issued this wind advisory at Apr 6, 2017, 12:03 AM PDT for Del Norte County, Humboldt County, California. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Apr 6, 2017, 12:03 AM PDT (07:03 UTC)
Expired
Apr 6, 2017, 7:00 AM PDT
In force
7 hr
Issued by
NWS Eureka, CA

Counties Del Norte County, CA, Humboldt County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 86 km from the middle of the area, began a volume at 07:04 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, 7.1 hours before the alert went out and 158 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.

Skew-T log-pSkew-T log-p diagram, Medford/Jackson, OR at 00:00Z on 2017-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 00:00Z on 2017-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
18 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
2316 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

395 
WWUS76 KEKA 060703
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1203 AM PDT Thu Apr 6 2017

...Gusty winds tonight and tomorrow evening through early Friday
morning...

A series of systems will be impacting the area. The first system
will bring gusty south winds of around 50 mph to the higher
elevation locations through early Thursday morning. Winds will 
diminish during the daytime on Thursday. The second system will
lead to another round of strong gusty winds for Thursday evening
through Friday morning. Gusts to 55 mph expected in ridge-top
locations.

CAZ102-104>106-062015-
/O.NEW.KEKA.WI.Y.0024.170406T0703Z-170406T1400Z/
/O.CON.KEKA.WI.Y.0023.170407T0000Z-170407T1200Z/
Del Norte Interior-Southwestern Humboldt-
Northern Humboldt Interior-Southern Humboldt Interior-
1203 AM PDT Thu Apr 6 2017

...WIND ADVISORY IN EFFECT UNTIL 7 AM PDT THURSDAY...
...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THURSDAY TO 5 AM PDT
FRIDAY...

The National Weather Service in Eureka has issued a Wind
Advisory...which is in effect until 7 AM PDT Thursday. There will
be another wind advisory in effect from 5 pm Thursday through 5 am
PDT Friday.

* WINDS...For the first system...winds will be around 20 to 30 mph
  with gusts to around 50 mph. For the second system...the winds
  will pick back up to 30 to 40 mph with gusts to 55 mph for
  exposed ridge-top locations.

* TIMING...The first system will impact the area through early
  Thursday morning. Winds will diminish somewhat during the
  morning on Thursday. Winds will ramp back up again tomorrow
  afternoon for the second system...and continue through Friday
  morning.

* LOCATIONS INCLUDE...Gasquet...Patrolia...Honeydew...
  Ettersberg...Willow Creek...Orleans...Garberville... Bridgeville.

* HIGHWAY(S) IMPACTED...Hwy 199...Hwy 101...Hwy 299...HWY 36.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit 
  http://www.wrh.noaa.gov/map

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult,especially for high
profile vehicles. Use extra caution.

&&

$$

CAZ107-108-110>113-062015-
/O.CON.KEKA.WI.Y.0023.170407T0000Z-170407T1200Z/
Northern Trinity-Southern Trinity-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Southwestern Mendocino Interior-
Southeastern Mendocino Interior-
1203 AM PDT Thu Apr 6 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 5 PM THURSDAY TO 5 AM PDT
FRIDAY...

* WINDS...South winds 30 to 40 mph with gusts to 55 mph for
  exposed ridge-top locations.

* LOCATIONS INCLUDE...Hayfork...Ruth...Boonville...Comptche... 
Ukiah...Hopland...Leggett...Laytonville...Willits...Covelo... 
Weaverville...Burnt ...Ranch...Trinity Center.

* HIGHWAY(S) IMPACTED...Hwy 3...Hwy 128...Hwy 101...Hwy 162.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit 
  http://www.wrh.noaa.gov/map

$$
2 follow-up statements
253 
WWUS76 KEKA 061123
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
423 AM PDT Thu Apr 6 2017

...Gusty winds early this morning and this afternoon through 
early Friday morning...

A series of systems will be impacting the area. The first system
will bring gusty south winds of around 50 mph to the higher
elevation locations through early this morning. Winds will 
diminish during the daytime today. The second system will lead to
another round of strong gusty winds for late this afternoon 
through Friday morning. Gusts of 60 to 70 mph expected in ridge-
top locations.

CAZ104>106-070030-
/O.UPG.KEKA.WI.Y.0023.170407T0000Z-170407T1200Z/
/O.NEW.KEKA.HW.W.0005.170406T2200Z-170407T0800Z/
/O.CON.KEKA.WI.Y.0024.000000T0000Z-170406T1400Z/
Southwestern Humboldt-Northern Humboldt Interior-
Southern Humboldt Interior-
423 AM PDT Thu Apr 6 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT THIS MORNING...
...HIGH WIND WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO 1 AM
PDT FRIDAY...

The National Weather Service in Eureka has issued a High Wind
Warning...which is in effect from 3 PM this afternoon to 1 AM PDT
Friday. The Wind Advisory is no longer in effect. 

* WINDS...For the first system...winds will be around 20 to 30 mph
  with gusts to around 50 mph. For the second system...the winds
  will pick back up to 30 to 45 mph with gusts of 60 to 70 mph for
  exposed ridge-top locations.

* TIMING...The first system will impact the area through early
  this morning. Winds will diminish somewhat during this morning.
  Winds will ramp back up again this afternoon for the second
  system...and continue through Friday morning.

* LOCATIONS INCLUDE...Patrolia...Honeydew...Ettersberg... Willow
  Creek...Orleans...Garberville...Bridgeville.

* HIGHWAY(S) IMPACTED...Hwy 101...Hwy 299...HWY 36.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit 
  http://www.wrh.noaa.gov/map

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult,especially for high
profile vehicles. Use extra caution.

&&

$$

CAZ101-103-109-070030-
/O.EXB.KEKA.WI.Y.0023.170406T2200Z-170407T1200Z/
Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast-
423 AM PDT Thu Apr 6 2017

...WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 5 AM PDT
FRIDAY...

The National Weather Service in Eureka has issued a Wind
Advisory...which is in effect from 3 PM this afternoon to 5 AM
PDT Friday. 

* WINDS...South wind 20 to 35 mph with gusts to 50 mph.

* LOCATIONS INCLUDE...Crescent City...Arcata...Eureka...
  Fortuna...Fort Bragg...Point Arena.

* HIGHWAY(S) IMPACTED...Hwy 101.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit 
  http://www.wrh.noaa.gov/map

$$

CAZ102-070030-
/O.EXT.KEKA.WI.Y.0023.170406T2200Z-170407T1200Z/
/O.CON.KEKA.WI.Y.0024.000000T0000Z-170406T1400Z/
Del Norte Interior-
423 AM PDT Thu Apr 6 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT THIS MORNING...
...WIND ADVISORY NOW IN EFFECT FROM 3 PM THIS AFTERNOON TO 5 AM
PDT FRIDAY...

* WINDS...For the first system...winds will be around 20 to 30 mph
  with gusts to around 50 mph. For the second system...the winds
  will pick back up to 30 to 40 mph with gusts to 55 mph for
  exposed locations.

* TIMING...The first system will impact the area through early
  this morning. Winds will diminish somewhat during this morning.
  Winds will ramp back up again this afternoon for the second
  system...and continue through Friday morning.

* LOCATIONS INCLUDE...Gasquet.

* HIGHWAY(S) IMPACTED...Hwy 199.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit 
  http://www.wrh.noaa.gov/map

$$

CAZ107-108-110>113-070030-
/O.EXT.KEKA.WI.Y.0023.170406T2200Z-170407T1200Z/
Northern Trinity-Southern Trinity-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Southwestern Mendocino Interior-
Southeastern Mendocino Interior-
423 AM PDT Thu Apr 6 2017

...WIND ADVISORY NOW IN EFFECT FROM 3 PM THIS AFTERNOON TO 5 AM
PDT FRIDAY...

* WINDS...South wind 20 to 35 mph with gusts to around 50 mph.

* LOCATIONS INCLUDE...Hayfork...Ruth...Ukiah...Hopland...
  Covelo...Weaverville...Burnt ...Ranch...Trinity Center...
  Boonville...Comptche...Leggett...Laytonville...Willits.

* HIGHWAY(S) IMPACTED...Hwy 3...Hwy 101...Hwy 162... Hwy 128.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit 
  http://www.wrh.noaa.gov/map

$$
005 
WWUS76 KEKA 061339
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
639 AM PDT Thu Apr 6 2017

...Gusty winds this afternoon through early Friday morning...

After the strong wind overnight last night, there will be another
round of strong gusty winds for late this afternoon through 
Friday morning. Gusts of 60 to 70 mph expected in ridge-top 
locations.

CAZ104>106-070245-
/O.EXP.KEKA.WI.Y.0024.000000T0000Z-170406T1400Z/
/O.CON.KEKA.HW.W.0005.170406T2200Z-170407T0800Z/
Southwestern Humboldt-Northern Humboldt Interior-
Southern Humboldt Interior-
639 AM PDT Thu Apr 6 2017

...HIGH WIND WARNING REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON
TO 1 AM PDT FRIDAY...
...WIND ADVISORY WILL EXPIRE AT 7 AM PDT THIS MORNING...

* WINDS...Winds of 30 to 45 mph with gusts of 60 to 70 mph for
  exposed ridge-top locations.

* TIMING...Winds will ramp back up this afternoon and continue
  through Friday morning. Strongest winds will be over the evening
  hours.

* LOCATIONS INCLUDE...Patrolia...Honeydew...Ettersberg... Willow
  Creek...Orleans...Garberville...Bridgeville.

* HIGHWAY(S) IMPACTED...Hwy 101...Hwy 299...HWY 36.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit
  http://www.wrh.noaa.gov/map

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

CAZ102-070245-
/O.EXP.KEKA.WI.Y.0024.000000T0000Z-170406T1400Z/
/O.CON.KEKA.WI.Y.0023.170406T2200Z-170407T1200Z/
Del Norte Interior-
639 AM PDT Thu Apr 6 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO
5 AM PDT FRIDAY...
...WIND ADVISORY WILL EXPIRE AT 7 AM PDT THIS MORNING...

* WINDS...Winds of 30 to 40 mph with gusts to 55 mph for exposed
  locations.

* TIMING...Winds will ramp back up this afternoon and continue
  through Friday morning.

* LOCATIONS INCLUDE...Gasquet.

* HIGHWAY(S) IMPACTED...Hwy 199.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit
  http://www.wrh.noaa.gov/map

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult,especially for high
profile vehicles. Use extra caution.

&&

$$

CAZ101-103-107>113-070245-
/O.CON.KEKA.WI.Y.0023.170406T2200Z-170407T1200Z/
Coastal Del Norte-Northern Humboldt Coast-Northern Trinity-
Southern Trinity-Mendocino Coast-Northwestern Mendocino Interior-
Northeastern Mendocino Interior-Southwestern Mendocino Interior-
Southeastern Mendocino Interior-
639 AM PDT Thu Apr 6 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO
5 AM PDT FRIDAY...

* WINDS...South winds 20 to 35 mph with gusts to around 50 mph.

*TIMING...Winds will ramp back up this afternoon and continue
  through Friday morning.

* LOCATIONS INCLUDE...Fort Bragg...Point Arena...Hayfork...
  Ruth...Crescent City...Ukiah...Hopland...Arcata...Eureka...
  Fortuna...Covelo...Weaverville...Burnt ...Ranch...Trinity
  Center...Boonville...Comptche...Leggett...Laytonville... Willits.

* HIGHWAY(S) IMPACTED...Hwy 1...Hwy 3...Hwy 101...Hwy 162... HWY
  3...Hwy 128.

* FOR A DETAILED VIEW OF THE HAZARD AREA...visit 
  http://www.wrh.noaa.gov/map

$$

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 6, 4:08 AM PDTWinter Storm WatchEKADel Norte, Humboldt24 hr
Apr 6, 4:23 AM PDTHigh Wind WarningEKADel Norte, Humboldt28 hr
Apr 6, 9:07 AM PDTWind AdvisoryEKADel Norte26 hr
Apr 6, 9:08 AM PDTStorm WarningEKA24 hr
Apr 6, 9:20 AM PDTHigh Surf AdvisoryEKADel Norte, Humboldt30 hr

Nearby

Wind Advisories in California, 2017Every wind advisory in 2017

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.