Alert archive / California / Wind Advisories in 2018

Wind Advisory 4, NWS Eureka, CA

January 23, 2018Del Norte County, Humboldt County, California

NWS Eureka, CA issued this wind advisory at Jan 23, 2018, 6:43 AM PST for Del Norte County, Humboldt County, California. It took effect at Jan 23, 2018, 8:00 PM PST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Jan 23, 2018, 6:43 AM PST (14:43 UTC)
In effect from
Jan 23, 2018, 8:00 PM PST
Expired
Jan 24, 2018, 8:00 AM PST
In force
12 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 14:41 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 2.7 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 12:00Z on 2018-01-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2018-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
896 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
274 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

023 
WWUS76 KEKA 231443
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
643 AM PST Tue Jan 23 2018

CAZ102-105-106-240345-
/O.NEW.KEKA.WI.Y.0004.180124T0400Z-180124T1200Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
643 AM PST Tue Jan 23 2018

...WIND ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 4 AM PST
WEDNESDAY FOR EXPOSED HILLS AND RIDGES ABOVE 1500 FEET...

The National Weather Service in Eureka has issued a Wind
Advisory...which is in effect from 8 PM this evening to 4 AM PST
Wednesday. 

* WINDS...Sustained winds of 25 to 35 mph with gusts of 40 to 50
  mph.

* LOCATIONS INCLUDE...Kneeland...Berry Summit.

* HIGHWAY(S) IMPACTED...Elevated portions and passes of Highways
  199...299...101...and 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 or greater are
expected. Winds this strong can make driving difficult,
especially for high profile vehicles. Use extra caution.

&&

$$
4 follow-up statements
625 
WWUS76 KEKA 232208
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
208 PM PST Tue Jan 23 2018

CAZ101-241230-
/O.EXB.KEKA.WI.Y.0004.180124T0800Z-180124T1400Z/
Coastal Del Norte-
208 PM PST Tue Jan 23 2018

...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM PST
WEDNESDAY...

The National Weather Service in Eureka has issued a Wind
Advisory...which is in effect from midnight tonight to 6 AM PST
Wednesday. 

* WINDS...Sustained winds 20 to 30 mph with gusts to 50 mph. 

* LOCATIONS INCLUDE...Crescent City and surrounding communities.

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

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

$$

CAZ102-105-106-241230-
/O.EXT.KEKA.WI.Y.0004.180124T0400Z-180124T1600Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
208 PM PST Tue Jan 23 2018

...WIND ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO 8 AM PST
WEDNESDAY ABOVE 1500 FEET...

* WINDS...Sustained winds of 25 to 35 mph with gusts to 50 mph.

* LOCATIONS INCLUDE...Kneeland...Berry Summit.

* HIGHWAY(S) IMPACTED...Elevated portions and passes of Highways
  199...299...101...and 36.

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


$$
776 
WWUS76 KEKA 241226
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
426 AM PST Wed Jan 24 2018

CAZ101-241400-
/O.CON.KEKA.WI.Y.0004.000000T0000Z-180124T1400Z/
Coastal Del Norte-
426 AM PST Wed Jan 24 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST EARLY THIS
MORNING...

* WINDS...Sustained winds 20 to 30 mph with gusts to 50 mph. 

* LOCATIONS INCLUDE...Crescent City and surrounding communities.

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

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

$$

CAZ102-105-106-241600-
/O.CON.KEKA.WI.Y.0004.000000T0000Z-180124T1600Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
426 AM PST Wed Jan 24 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING
ABOVE 1500 FEET...

* WINDS...Sustained winds of 25 to 35 mph with gusts to 50 mph.

* LOCATIONS INCLUDE...Kneeland...Berry Summit.

* HIGHWAY(S) IMPACTED...Elevated portions and passes of Highways
  199...299...101...and 36.

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

$$
254 
WWUS76 KEKA 241352
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
552 AM PST Wed Jan 24 2018


CAZ101-241500-
/O.CAN.KEKA.WI.Y.0004.000000T0000Z-180124T1400Z/
Coastal Del Norte-
552 AM PST Wed Jan 24 2018

...WIND ADVISORY IS CANCELLED...

The National Weather Service in Eureka has cancelled the Wind
Advisory. 

The front has passed through Del Norte County. Gusty winds will
continue to taper off through the morning hours. 

$$

CAZ102-105-106-241600-
/O.CON.KEKA.WI.Y.0004.000000T0000Z-180124T1600Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
552 AM PST Wed Jan 24 2018

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST THIS MORNING
ABOVE 1500 FEET...

* WINDS...Sustained winds of 25 to 35 mph with gusts to 50 mph.

* LOCATIONS INCLUDE...Kneeland...Berry Summit. 

* HIGHWAY(S) IMPACTED...Elevated portions and passes of Highways
  199...299...101...and 36.

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

$$
101 
WWUS76 KEKA 241536
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
736 AM PST Wed Jan 24 2018

CAZ102-105-106-241645-
/O.EXP.KEKA.WI.Y.0004.000000T0000Z-180124T1600Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
736 AM PST Wed Jan 24 2018

...WIND ADVISORY WILL EXPIRE AT 8 AM PST THIS MORNING ABOVE
1500 FEET...

Winds will remain breezy this morning, but winds will continue to
diminish through the day. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 23, 8:44 AM PSTSmall Craft AdvisoryEKA5 days
Jan 23, 2:19 PM PSTWinter Weather AdvisoryEKADel Norte, Humboldt, Mendocino, Trinity60 hr

Nearby

Wind Advisories in California, 2018Every wind advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.