Alert archive / California / Wind Advisories in 2018

Wind Advisory 14, NWS Eureka, CA

November 27, 2018Mendocino County, California

NWS Eureka, CA issued this wind advisory at Nov 27, 2018, 2:10 PM PST for Mendocino County, California. It took effect at Nov 29, 2018, 1:00 PM PST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Nov 27, 2018, 2:10 PM PST (22:10 UTC)
In effect from
Nov 29, 2018, 1:00 PM PST
Expired
Nov 29, 2018, 10:00 PM PST
In force
9 hr
Issued by
NWS Eureka, CA

County Mendocino County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 139 km from the middle of the area, began a volume at 22:12 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

Oakland, CA (KOAK), launched 12:00Z, 10.2 hours before the alert went out and 218 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, Oakland, CA at 12:00Z on 2018-11-27Temperature 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, Oakland, CA at 12:00Z on 2018-11-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.19395878Sfc1 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
916 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

608 
WWUS76 KEKA 272210
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
210 PM PST Tue Nov 27 2018


CAZ109-281115-
/O.NEW.KEKA.WI.Y.0014.181129T1900Z-181130T0300Z/
Mendocino Coast-
210 PM PST Tue Nov 27 2018

...WIND ADVISORY IN EFFECT FROM 11 AM TO 7 PM PST THURSDAY...

The National Weather Service in Eureka has issued a Wind
Advisory...which is in effect from 11 AM to 7 PM PST Thursday. 

* WINDS...Northwest winds 20 to 30 mph with gusts to 45 mph.

* LOCATIONS INCLUDE...Fort Bragg...Point Arena.

* HIGHWAY(S) IMPACTED...Hwy 1.

* 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
007 
WWUS76 KEKA 281113
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
313 AM PST Wed Nov 28 2018


CAZ109-290015-
/O.CON.KEKA.WI.Y.0014.181129T1900Z-181130T0300Z/
Mendocino Coast-
313 AM PST Wed Nov 28 2018

...WIND ADVISORY REMAINS IN EFFECT FROM 11 AM TO 7 PM PST
THURSDAY...

* WINDS...Northwest winds 20 to 30 mph with gusts to 45 mph.

* LOCATIONS INCLUDE...Fort Bragg...Point Arena.

* HIGHWAY(S) IMPACTED...Hwy 1.

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

$$
519 
WWUS76 KEKA 282227
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
227 PM PST Wed Nov 28 2018



CAZ109-291130-
/O.EXT.KEKA.WI.Y.0014.181129T2100Z-181130T0600Z/
Mendocino Coast-
227 PM PST Wed Nov 28 2018

...WIND ADVISORY NOW IN EFFECT FROM 1 PM TO 10 PM PST THURSDAY...

* WINDS...Northwest winds 20 to 30 mph with gusts to 45 mph.

* LOCATIONS INCLUDE...Fort Bragg...Point Arena.

* HIGHWAY(S) IMPACTED...Hwy 1.

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

$$
411 
WWUS76 KEKA 291107
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
307 AM PST Thu Nov 29 2018

CAZ109-300600-
/O.CON.KEKA.WI.Y.0014.181129T2100Z-181130T0600Z/
Mendocino Coast-
307 AM PST Thu Nov 29 2018

...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
10 PM PST THIS EVENING...

* WINDS...Northwest winds around 20 to 30 mph, with gusts to 45
  mph.

* LOCATIONS INCLUDE...Fort Bragg...Point Arena.

* HIGHWAY(S) IMPACTED...Hwy 1.

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

$$
112 
WWUS76 KEKA 300600
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1000 PM PST Thu Nov 29 2018

CAZ109-300700-
/O.EXP.KEKA.WI.Y.0014.000000T0000Z-181130T0600Z/
Mendocino Coast-
1000 PM PST Thu Nov 29 2018

...WIND ADVISORY HAS EXPIRED...

Winds will continue to diminish overnight.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 26, 9:00 PM PSTHigh Surf AdvisoryEKADel Norte, Humboldt, Mendocino38 hr
Nov 27, 10:10 AM PSTGale WatchEKA17 hr
Nov 27, 2:04 PM PSTFlash Flood WatchEKAMendocino50 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.