Alert archive / California / Wind Advisories in 2017

Wind Advisory 27, NWS Eureka, CA

April 12, 2017Del Norte County, Humboldt County, California

NWS Eureka, CA issued this wind advisory at Apr 12, 2017, 2:21 AM PDT for Del Norte County, Humboldt County, California. It took effect at Apr 12, 2017, 11:00 AM PDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Apr 12, 2017, 2:21 AM PDT (09:21 UTC)
In effect from
Apr 12, 2017, 11:00 AM PDT
Expired
Apr 12, 2017, 3:17 PM PDT
In force
4 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 09:18 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, 9.4 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 2017-04-12Temperature 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 00:00Z on 2017-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1133 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
570 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

559 
WWUS76 KEKA 120921
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
221 AM PDT Wed Apr 12 2017

...Another round of gusty winds expected this afternoon...

.A storm system will enter the region this afternoon and produce
strong gusty winds for exposed ridge tops.

CAZ102-105-122230-
/O.CAN.KEKA.WI.Y.0026.000000T0000Z-170412T1200Z/
/O.NEW.KEKA.WI.Y.0027.170412T1800Z-170413T0000Z/
Del Norte Interior-Northern Humboldt Interior-
221 AM PDT Wed Apr 12 2017

...WIND ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 5 PM PDT
THIS AFTERNOON ABOVE 2000 FEET...

The National Weather Service in Eureka has issued a Wind
Advisory...which is in effect from 11 AM this morning to 5 PM PDT
this afternoon. 

* WINDS...South 20 to 30 mph with gusts from 40 to 50 mph

* LOCATIONS INCLUDE...Rural areas of Del Norte County above 2000
  feet.

* HIGHWAYS IMPACTED...Highway 199.

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.

&&

$$

CAZ101-121030-
/O.CAN.KEKA.WI.Y.0026.000000T0000Z-170412T1200Z/
Coastal Del Norte-
221 AM PDT Wed Apr 12 2017

...WIND ADVISORY IS CANCELLED...

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

$$

CAZ104-106-122230-
/O.NEW.KEKA.WI.Y.0027.170412T1800Z-170413T0000Z/
Southwestern Humboldt-Southern Humboldt Interior-
221 AM PDT Wed Apr 12 2017

...WIND ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 5 PM PDT
THIS AFTERNOON ABOVE 2000 FEET...

The National Weather Service in Eureka has issued a Wind
Advisory...which is in effect from 11 AM this morning to 5 PM PDT
this afternoon. 

* WINDS...South 20 to 30 mph with gusts from 40 to 50 mph.

* LOCATIONS INCLUDE...Kneeland...Patrolia...Honeydew...
  Ettersberg...Garberville...Bridgeville.

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

&&

$$
1 follow-up statement
594 
WWUS76 KEKA 122217
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
317 PM PDT Wed Apr 12 2017


CAZ102-104>106-122330-
/O.CAN.KEKA.WI.Y.0027.000000T0000Z-170413T0000Z/
Del Norte Interior-Southwestern Humboldt-
Northern Humboldt Interior-Southern Humboldt Interior-
317 PM PDT Wed Apr 12 2017

...WIND ADVISORY IS CANCELLED...

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

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 8:53 PM PDTGale WatchEKA5 hr
Apr 11, 8:53 PM PDTSmall Craft AdvisoryEKA5 hr
Apr 12, 2:09 AM PDTGale WarningEKA15 hr
Apr 12, 2:09 AM PDTSmall Craft AdvisoryEKA19 hr
Apr 12, 2:09 AM PDTHazardous Seas WarningEKA10 hr
Apr 12, 3:49 AM PDTWinter Weather AdvisoryEKADel Norte, Humboldt36 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.