Alert archive / California / Wind Advisories in 2017

Wind Advisory 1, NWS Eureka, CA

January 7, 2017Del Norte County, Humboldt County, California

NWS Eureka, CA issued this wind advisory at Jan 7, 2017, 9:32 AM PST for Del Norte County, Humboldt County, California. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Jan 7, 2017, 9:32 AM PST (17:32 UTC)
Expired
Jan 7, 2017, 2:18 PM PST
In force
5 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 17:34 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, 5.5 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 2017-01-07Temperature 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 2017-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.1939587897117136Sfc1 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
740 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

326 
WWUS76 KEKA 071732
NPWEKA

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
932 AM PST SAT JAN 7 2017

CAZ102-104>106-080000-
/O.NEW.KEKA.WI.Y.0001.170107T1732Z-170108T0000Z/
DEL NORTE INTERIOR-SOUTHWESTERN HUMBOLDT-
NORTHERN HUMBOLDT INTERIOR-SOUTHERN HUMBOLDT INTERIOR-
932 AM PST SAT JAN 7 2017

...WIND ADVISORY IN EFFECT UNTIL 4 PM PST THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. 

* WINDS...25 TO 35 MPH SUSTAINED WINDS...GUSTS TO 60 MPH.

* LOCATIONS INCLUDE...KNEELAND...BALD HILLS...KING RANGE...OTHER
  HIGH ELEVATION COMMUNITIES IN THE COASTAL MOUNTAINS OF HUMBOLDT
  AND DEL NORTE COUNTIES.

* HIGHWAY(S) IMPACTED...HIGHWAY 299 AT BERRY SUMMIT...HIGHWAY 101
  AT LAST CHANCE GRADE AND PRAIRIE CREEK SUMMIT...BALD HILLS ROAD. STRONG
  WINDS CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE
  VEHICLES.

* 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
411 
WWUS76 KEKA 072218
NPWEKA

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE EUREKA CA
218 PM PST SAT JAN 7 2017

CAZ102-104>106-072330-
/O.CAN.KEKA.WI.Y.0001.000000T0000Z-170108T0000Z/
DEL NORTE INTERIOR-SOUTHWESTERN HUMBOLDT-
NORTHERN HUMBOLDT INTERIOR-SOUTHERN HUMBOLDT INTERIOR-
218 PM PST SAT JAN 7 2017

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN EUREKA HAS CANCELLED THE WIND
ADVISORY. 

STRONG WINDS SHOULD CONTINUE TO GRADUALLY DIMINISH THROUGH THE
EVENING. HOWEVER ANOTHER FRONT WILL ARRIVE AROUND SUNRISE ON
SUNDAY AND WILL BRING AN ADDITIONAL BOUT OF GUSTY SOUTH WINDS TO
THE COASTAL AREAS. THIS MAY WARRANT THE ISSUANCE OF ANOTHER WIND
ADVISORY.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 6, 4:14 PM PSTRiver Flood WatchEKAMendocino36 hr
Jan 6, 4:14 PM PSTRiver Flood WatchEKAHumboldt45 hr
Jan 7, 2:58 PM PSTRiver Flood WatchEKAMendocino14 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.