Alert archive / California / Wind Advisories in 2017

Wind Advisory 36, NWS Eureka, CA

December 3, 2017Mendocino County, California

NWS Eureka, CA issued this wind advisory at Dec 3, 2017, 8:28 AM PST for Mendocino County, California. It took effect at Dec 4, 2017, 4:00 PM PST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Dec 3, 2017, 8:28 AM PST (16:28 UTC)
In effect from
Dec 4, 2017, 4:00 PM PST
Expired
Dec 5, 2017, 7:00 AM PST
In force
15 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 16:29 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, 4.5 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 2017-12-03Temperature 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 2017-12-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -56 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
973 m above ground
0-6 km bulk shear
80 kt
0-1 km storm-relative helicity
-56 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

832 
WWUS76 KEKA 031628
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
828 AM PST Sun Dec 3 2017

CAZ113-040530-
/O.NEW.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/
Southeastern Mendocino Interior-
828 AM PST Sun Dec 3 2017

...WIND ADVISORY IN EFFECT FROM 7 PM MONDAY TO 7 AM PST TUESDAY
FOR HILLS AND RIDGES ABOVE 1500 FEET ACROSS SOUTHEAST MENDOCINO
COUNTY...

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

* WINDS...Sustained East Winds 20 TO 35 mph with Gusts Ranging
  from 45 to 55 mph.

* LOCATIONS INCLUDE...Hills and Ridges or exposed areas above 1500
  ft in Elevation across Southeast Mendocino County.

* HIGHWAY(S) IMPACTED...Elevated portions of Hwy 175.

* 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.

&&

$$

CAZ101-103-104-109-112-040530-
/O.CON.KEKA.FR.Y.0035.171204T0600Z-171204T1800Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-Southwestern Mendocino Interior-
828 AM PST Sun Dec 3 2017

...FROST ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST MONDAY...

* LOW TEMPERATURES...Low to mid 30s.

* LOCATIONS INCLUDE...Arcata...Eureka...Fortuna...Petrolia...
  Honeydew...Ettersberg...Crescent City...Fort Bragg...Point
  Arena...Boonville...Comptche. 

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

$$

CAZ102-105-106-040530-
/O.CON.KEKA.FZ.A.0001.171204T0600Z-171204T1800Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
828 AM PST Sun Dec 3 2017

...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
MONDAY MORNING...

* LOW TEMPERATURES...Upper 20S to lower 30S.

* LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek...
  Garberville...Bridgeville.

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

$$
8 follow-up statements
696 
WWUS76 KEKA 032154
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
154 PM PST Sun Dec 3 2017
.
CAZ102-105-106-041100-
/O.UPG.KEKA.FZ.A.0001.171204T0600Z-171204T1800Z/
/O.NEW.KEKA.FZ.W.0012.171204T0600Z-171204T1800Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
154 PM PST Sun Dec 3 2017

...FREEZE WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST
MONDAY...

The National Weather Service in Eureka has issued a Freeze
Warning...which is in effect from 10 PM this evening to 10 AM PST
Monday. The Freeze Watch is no longer in effect. 

* LOW TEMPERATURES...Upper 20S to lower 30S.

* LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... 
  Garberville...Bridgeville.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

CAZ101-103-104-109-112-041100-
/O.CON.KEKA.FR.Y.0035.171204T0600Z-171204T1800Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-Southwestern Mendocino Interior-
154 PM PST Sun Dec 3 2017

...FROST ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST MONDAY...

* LOW TEMPERATURES...Lower 30s to mid 30s. A light freeze is
  possible in a few protected valleys. 

* LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent
  City...Arcata...Eureka...Fortuna...Petrolia...Honeydew...
  Ettersberg...Boonville...Comptche.

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

$$

CAZ113-041100-
/O.CON.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/
Southeastern Mendocino Interior-
154 PM PST Sun Dec 3 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM MONDAY TO 7 AM PST
TUESDAY ABOVE 1500 FEET...

* WINDS...20 to 35 mph with gusts to 45 to 55 mph.

* LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500
  feet in elevation across southeast Mendocino county.

* HIGHWAY(S) IMPACTED...Elevated portions of Highway 175.

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

$$
210 
WWUS76 KEKA 041012
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
212 AM PST Mon Dec 4 2017

.

CAZ102-105-106-041800-
/O.CON.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
212 AM PST Mon Dec 4 2017

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* LOW TEMPERATURES...Upper 20S to lower 30S.

* LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... 
  Garberville...Bridgeville.

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

$$

CAZ101-103-104-109-112-041800-
/O.CON.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-Southwestern Mendocino Interior-
212 AM PST Mon Dec 4 2017

...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* LOW TEMPERATURES...Low to mid 30s.

* LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent
  City...Arcata...Eureka...Fortuna...Petrolia...Honeydew... ...
  Ettersberg...Boonville...Comptche.

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

$$

CAZ113-042315-
/O.CON.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/
Southeastern Mendocino Interior-
212 AM PST Mon Dec 4 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
PST TUESDAY ABOVE 1500 FEET...

* WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55
  mph.

* LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500
  feet in elevation across southeast Mendocino county.

* HIGHWAY IMPACTED...Elevated portions of Highway 175.

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

$$
910 
WWUS76 KEKA 041014
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
214 AM PST Mon Dec 4 2017

CAZ102-105-106-041800-
/O.CON.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/
Del Norte Interior-Northern Humboldt Interior-
Southern Humboldt Interior-
214 AM PST Mon Dec 4 2017

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* LOW TEMPERATURES...Upper 20S to lower 30S.

* LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek... 
  Garberville...Bridgeville.

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

$$

CAZ101-103-104-109-112-041800-
/O.CON.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-Southwestern Mendocino Interior-
214 AM PST Mon Dec 4 2017

...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* LOW TEMPERATURES...Low to mid 30s.

* LOCATIONS INCLUDE...Fort Bragg...Point Arena...Crescent
  City...Arcata...Eureka...Fortuna...Petrolia...Honeydew... ...
  Ettersberg...Boonville...Comptche.

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

$$

CAZ113-042315-
/O.CON.KEKA.WI.Y.0036.171205T0300Z-171205T1500Z/
Southeastern Mendocino Interior-
214 AM PST Mon Dec 4 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
PST TUESDAY ABOVE 1500 FEET...

* WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55
  mph.

* LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500
  feet in elevation across southeast Mendocino county.

* HIGHWAY IMPACTED...Elevated portions of Highway 175.

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

$$
509 
WWUS76 KEKA 041813
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1013 AM PST Mon Dec 4 2017

CAZ102-050715-
/O.EXP.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/
/O.NEW.KEKA.FR.Y.0036.171205T0900Z-171205T1700Z/
Del Norte Interior-
1013 AM PST Mon Dec 4 2017

...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST TUESDAY...

The National Weather Service in Eureka has issued a Frost
Advisory...which is in effect from 1 AM to 9 AM PST Tuesday. 

* LOW TEMPERATURES...33 to 36 degrees.

* LOCATIONS INCLUDE...Valleys and low lying areas including
  Gasquet.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that frost is possible. Sensitive outdoor
plants may be killed if left uncovered.

&&

$$

CAZ105-106-041915-
/O.EXP.KEKA.FZ.W.0012.000000T0000Z-171204T1800Z/
Northern Humboldt Interior-Southern Humboldt Interior-
1013 AM PST Mon Dec 4 2017

...FREEZE WARNING HAS EXPIRED...


$$

CAZ101-103-104-050715-
/O.EXP.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/
/O.NEW.KEKA.FR.Y.0036.171205T0900Z-171205T1700Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
1013 AM PST Mon Dec 4 2017

...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PST TUESDAY...

The National Weather Service in Eureka has issued a Frost
Advisory...which is in effect from 1 AM to 9 AM PST Tuesday. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that frost is possible. Sensitive outdoor
plants may be killed if left uncovered.

&&

$$

CAZ109-112-041915-
/O.EXP.KEKA.FR.Y.0035.000000T0000Z-171204T1800Z/
Mendocino Coast-Southwestern Mendocino Interior-
1013 AM PST Mon Dec 4 2017

...FROST ADVISORY HAS EXPIRED...


$$

CAZ113-050715-
/O.EXT.KEKA.WI.Y.0036.171205T0000Z-171205T1500Z/
Southeastern Mendocino Interior-
1013 AM PST Mon Dec 4 2017

...WIND ADVISORY NOW IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM
PST TUESDAY ABOVE 1500 FEET...

* WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55
  mph.

* LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500
  feet in elevation across southeast Mendocino county.

* HIGHWAY IMPACTED...Elevated portions of Highway 175. 

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

$$
836 
WWUS76 KEKA 041822 AAA
NPWEKA

URGENT - WEATHER MESSAGE...UPDATED
National Weather Service Eureka CA
1022 AM PST Mon Dec 4 2017

CAZ101>104-050545-
/O.CON.KEKA.FR.Y.0036.171205T0900Z-171205T1700Z/
Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast-
Southwestern Humboldt-
1022 AM PST Mon Dec 4 2017

...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST
TUESDAY...

* LOW TEMPERATURES...Low to mid 30s.

* LOCATIONS INCLUDE...Crescent City...Arcata...Eureka... 
  Fortuna...Gasquet...Petrolia...Honeydew...Ettersberg.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that frost is possible. Outdoor plants 
sensitive to cold temperatures may suffer or die if left 
uncovered.


$$

CAZ113-050545-
/O.CON.KEKA.WI.Y.0036.171205T0000Z-171205T1500Z/
Southeastern Mendocino Interior-
1022 AM PST Mon Dec 4 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
7 AM PST TUESDAY FOR HILLS AND RIDGES OR EXPOSED AREAS ABOVE 1500
FEET IN ELEVATION ACROSS SOUTHEAST MENDOCINO COUNTY...

* WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55
  mph.

* LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500
  feet in elevation across southeast Mendocino county.

* HIGHWAY IMPACTED...Elevated portions of Highway 175.

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

$$
998 
WWUS76 KEKA 050457
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
857 PM PST Mon Dec 4 2017

CAZ101>104-051700-
/O.CON.KEKA.FR.Y.0036.171205T0900Z-171205T1700Z/
Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast-
Southwestern Humboldt-
857 PM PST Mon Dec 4 2017

...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST
TUESDAY...

* LOW TEMPERATURES...Low to mid 30s.

* LOCATIONS INCLUDE...Crescent City...Arcata...Eureka... 
  Fortuna...Gasquet...Petrolia...Honeydew...Ettersberg.

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

$$

CAZ113-051500-
/O.CON.KEKA.WI.Y.0036.000000T0000Z-171205T1500Z/
Southeastern Mendocino Interior-
857 PM PST Mon Dec 4 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY FOR
HILLS AND RIDGES OR EXPOSED AREAS ABOVE 1500 FEET...

* WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 55
  mph.

* LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500
  feet in elevation across southeast Mendocino county.

* HIGHWAY IMPACTED...Elevated portions of Highway 175.

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

$$
872 
WWUS76 KEKA 051112
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
312 AM PST Tue Dec 5 2017

CAZ101>104-051700-
/O.CON.KEKA.FR.Y.0036.000000T0000Z-171205T1700Z/
Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast-
Southwestern Humboldt-
312 AM PST Tue Dec 5 2017

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...

LOW TEMPERATURES...Low to mid 30s.

* LOCATIONS INCLUDE...Crescent City...Arcata...Eureka...
  Fortuna...Gasquet...Petrolia...Honeydew...Ettersberg.

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

$$

CAZ113-051500-
/O.CON.KEKA.WI.Y.0036.000000T0000Z-171205T1500Z/
Southeastern Mendocino Interior-
312 AM PST Tue Dec 5 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST THIS MORNING
ABOVE 1500 FEET...

* WINDS...East-northeasterly 20 to 35 mph with gusts from 45 to 
  55 mph.

* LOCATIONS INCLUDE...Hills, ridges, and exposed areas above 1500
  feet in elevation across southeast Mendocino county.

* HIGHWAY IMPACTED...Elevated portions of Highway 175.

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

$$
294 
WWUS76 KEKA 051445
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
645 AM PST Tue Dec 5 2017

CAZ113-051545-
/O.EXP.KEKA.WI.Y.0036.000000T0000Z-171205T1500Z/
Southeastern Mendocino Interior-
645 AM PST Tue Dec 5 2017

...WIND ADVISORY WILL EXPIRE AT 7 AM PST THIS MORNING ABOVE
1500 FEET...

$$

CAZ101>104-051700-
/O.CON.KEKA.FR.Y.0036.000000T0000Z-171205T1700Z/
Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast-
Southwestern Humboldt-
645 AM PST Tue Dec 5 2017

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...

* LOCATIONS INCLUDE...Crescent City...Arcata...Eureka...
  Fortuna...Gasquet...Petrolia...Honeydew...Ettersberg.

* 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
Dec 3, 2:32 AM PSTFrost AdvisoryEKADel Norte, Humboldt, Mendocino31 hr
Dec 3, 2:34 AM PSTCoastal Flood AdvisoryEKAHumboldt11 hr
Dec 3, 1:54 PM PSTFreeze WarningEKADel Norte, Humboldt20 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.