Alert archive / California / High Wind Watches in 2019

High Wind Watch 2, NWS Eureka, CA

October 25, 2019Humboldt County, Mendocino County, Trinity County, California

NWS Eureka, CA issued this high wind watch at Oct 25, 2019, 2:36 AM PDT for Humboldt County, Mendocino County, Trinity County, California. It took effect at Oct 26, 2019, 10:00 PM PDT. It was in force for .

The area

The counties it named.

The facts

Issued
Oct 25, 2019, 2:36 AM PDT (09:36 UTC)
In effect from
Oct 26, 2019, 10:00 PM PDT
Expired
Oct 26, 2019, 8:05 AM PDT
In force
Issued by
NWS Eureka, CA

Counties Humboldt County, CA, Mendocino County, CA, Trinity County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 73 km from the middle of the area, began a volume at 09:39 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, 9.6 hours before the alert went out and 241 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 2019-10-25Temperature 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 2019-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -74 square meters per square second.193958Sfc1 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
3212 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-74 m²/s²
0-3 km storm-relative helicity
-39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

596 
WWUS76 KEKA 250936
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
236 AM PDT Fri Oct 25 2019

CAZ106-108-110-111-113-251745-
/O.NEW.KEKA.HW.A.0002.191027T0700Z-191028T1300Z/
Southern Humboldt Interior-Southern Trinity-
Northwestern Mendocino Interior-Northeastern Mendocino Interior-
Southeastern Mendocino Interior-
236 AM PDT Fri Oct 25 2019

...HIGH WIND WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
LATE SUNDAY NIGHT...

* WHAT...Northeast winds 20 to 30 mph with gusts from 60 to 80
  mph.

* WHERE...Elevations above 1500 feet in Southern Humboldt 
  Interior, Southern Trinity, Northwestern Mendocino Interior, 
  Northeastern Mendocino Interior and Southeastern Mendocino 
  Interior Counties.

* WHEN...From late Saturday night through late Sunday night.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Widespread power outages are possible. Travel could be
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$
4 follow-up statements
348 
WWUS76 KEKA 251747
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1047 AM PDT Fri Oct 25 2019

CAZ106-108-110-111-113-260600-
/O.CON.KEKA.HW.A.0002.191027T0700Z-191028T1300Z/
Southern Humboldt Interior-Southern Trinity-
Northwestern Mendocino Interior-Northeastern Mendocino Interior-
Southeastern Mendocino Interior-
1047 AM PDT Fri Oct 25 2019

...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH LATE SUNDAY NIGHT...

* WHAT...Northeast winds 25 to 35 mph with gusts to 60 mph.
  Localized higher gusts to 80 mph possible downwind from highest
  ridgetops, particularly late Saturday night and early Sunday
  morning.

* WHERE...Elevations above 1500 feet in southeastern Humboldt,
  southern Trinity, and interior Mendocino counties. Highest gusts
  downwind from South Fork Mountain and the highest ridges of
  eastern Mendocino County.

* WHEN...From late Saturday night through late Sunday night.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Widespread power outages are possible. Travel could be
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

$$
675 
WWUS76 KEKA 252130
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
230 PM PDT Fri Oct 25 2019

CAZ106-108-110-111-113-261130-
/O.EXT.KEKA.HW.A.0002.191027T0700Z-191028T0700Z/
Southern Humboldt Interior-Southern Trinity-
Northwestern Mendocino Interior-Northeastern Mendocino Interior-
Southeastern Mendocino Interior-
230 PM PDT Fri Oct 25 2019

...HIGH WIND WATCH NOW IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
SUNDAY EVENING...

* WHAT...Northeast winds 25 to 35 mph with gusts to 60 mph.
  Localized brief higher gusts to 80 mph possible downwind from
  the highest ridgetops, particularly late Saturday night and 
  early Sunday morning.

* WHERE...Elevations above 1500 feet in southeastern Humboldt, 
  southern Trinity, and interior Mendocino counties. Highest 
  gusts downwind from South Fork Mountain and the highest ridges 
  of eastern Mendocino County.

* WHEN...From late Saturday night through Sunday evening.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Widespread power outages are possible. Travel could be
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

$$
499 
WWUS76 KEKA 260941
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
241 AM PDT Sat Oct 26 2019

CAZ106-108-110-111-113-261745-
/O.EXT.KEKA.HW.A.0002.191027T0500Z-191028T0700Z/
Southern Humboldt Interior-Southern Trinity-
Northwestern Mendocino Interior-Northeastern Mendocino Interior-
Southeastern Mendocino Interior-
241 AM PDT Sat Oct 26 2019

...HIGH WIND WATCH NOW IN EFFECT FROM LATE THIS EVENING THROUGH 
SUNDAY EVENING...

* WHAT...Northeast winds 25 to 35 mph with gusts to 60 mph.
  Locally higher gusts to 80 mph possible downwind from the 
  highest ridgetops, particularly late Saturday night and early 
  Sunday morning.

* WHERE...Elevations above 1500 feet in southeastern Humboldt, 
  southern Trinity, and interior Mendocino counties. Highest 
  gusts downwind from South Fork Mountain and the highest ridges 
  of eastern Mendocino County.

* WHEN...From this evening through Sunday evening.

* IMPACTS...Damaging winds could blow down trees and power 
  lines. Widespread power outages are possible. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$
701 
WWUS76 KEKA 261505
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
805 AM PDT Sat Oct 26 2019

CAZ106-108-110-111-113-262315-
/O.UPG.KEKA.HW.A.0002.191027T0500Z-191028T0700Z/
/O.NEW.KEKA.HW.W.0002.191027T0500Z-191028T0700Z/
Southern Humboldt Interior-Southern Trinity-
Northwestern Mendocino Interior-Northeastern Mendocino Interior-
Southeastern Mendocino Interior-
805 AM PDT Sat Oct 26 2019

...HIGH WIND WARNING IN EFFECT FROM 10 PM THIS EVENING TO
MIDNIGHT SUNDAY NIGHT...

* WHAT...Northeast winds increasing to 25 to 35 mph with gusts to
  60 mph. Locally higher gusts to 80 mph possible downwind from
  the highest ridgetops, particularly late tonight and early 
  Sunday morning.

* WHERE...Elevations above 1500 feet in southeastern Humboldt, 
  southern Trinity, and interior Mendocino counties. Highest 
  gusts downwind from South Fork Mountain and the highest ridges 
  of eastern Mendocino County.

* WHEN...From 10 PM this evening to midnight Sunday night.

* IMPACTS...Damaging winds will blow down trees and power lines.
  Widespread power outages are expected. Travel will be difficult,
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 25, 3:38 AM PDTGale WarningEKA53 hr
Oct 25, 2:28 PM PDTRed Flag WarningEKA68 hr

Nearby

High Wind Watches in California, 2019Every high wind watch in 2019

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.