Alert archive / California / High Wind Watches in 2021

High Wind Watch 3, NWS Las Vegas, NV

April 12, 2021Inyo County, San Bernardino County, California

NWS Las Vegas, NV issued this high wind watch at Apr 12, 2021, 2:57 AM PDT for Inyo County, San Bernardino County, California. It took effect at Apr 13, 2021, 11:00 AM PDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 12, 2021, 2:57 AM PDT (09:57 UTC)
In effect from
Apr 13, 2021, 11:00 AM PDT
Expired
Apr 12, 2021, 1:47 PM PDT
In force
Issued by
NWS Las Vegas, NV

Counties Inyo County, CA, San Bernardino County, CA

The radar

The Edwards AFB radar (KEYX), 95 km from the middle of the area, began a volume at 10:01 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

Las Vegas, NV (KVEF), launched 00:00Z, 10.0 hours before the alert went out and 137 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, Las Vegas, NV at 00:00Z on 2021-04-12Temperature 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, Las Vegas, NV at 00:00Z on 2021-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
5061 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

149 
WWUS75 KVEF 120957
NPWVEF

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
257 AM PDT Mon Apr 12 2021

CAZ519-130000-
/O.NEW.KVEF.HW.A.0003.210413T1800Z-210414T0500Z/
Eastern Sierra Slopes-
Including Aspendell and Whitney Portal
257 AM PDT Mon Apr 12 2021

...HIGH WIND WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 70 mph 
  possible.

* WHERE...Eastern Sierra Slopes above 5000 ft. 

* WHEN...From Tuesday morning through Tuesday evening.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Power outages are possible. The very high wind gusts will result
  in a danger for hikers, campers, or anyone recreating in the
  higher elevations of the eastern Sierra in Inyo County.

* ADDITIONAL DETAILS...This watch highlights the areas of the
  highest potential wind gusts on Tuesday. Lesser wind gusts, but
  still strong, are likely in nearby locations such as the Owens
  Valley where gusts up to 50 mph may be possible. 

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.

&&

$$

CAZ523-130000-
/O.NEW.KVEF.HW.A.0003.210413T1800Z-210414T0500Z/
Western Mojave Desert-
Including Barstow, Daggett, and Fort Irwin
257 AM PDT Mon Apr 12 2021

...HIGH WIND WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING...

* WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph 
  possible.

* WHERE...Western Mojave Desert.

* WHEN...From Tuesday morning through Tuesday evening.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Some power outages are possible. Travel could be difficult,
  especially for high profile vehicles due to potential blowovers
  and due to blowing dust reducing visibility.

* ADDITIONAL DETAILS...This watch highlights the areas of the
  highest potential wind gusts on Tuesday. Lesser wind gusts, but
  still strong, are likely in several surrounding locations
  Tuesday. 

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.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/lasvegas
1 follow-up statement
003 
WWUS75 KVEF 122047
NPWVEF

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
147 PM PDT Mon Apr 12 2021

A low pressure system will move across the Great Basin Tuesday,
bringing strong west to southwest winds across the region.

CAZ519-131200-
/O.UPG.KVEF.HW.A.0003.210413T1800Z-210414T0500Z/
/O.NEW.KVEF.HW.W.0003.210413T1800Z-210414T0500Z/
Eastern Sierra Slopes-
Including the cities of Aspendell and Whitney Portal
147 PM PDT Mon Apr 12 2021

...HIGH WIND WARNING IN EFFECT FROM 11 AM TO 10 PM PDT TUESDAY...

The National Weather Service in Las Vegas has issued a High Wind
Warning, which is in effect from 11 AM to 10 PM PDT Tuesday. The
High Wind Watch is no longer in effect. 

* WHAT...West winds 40 to 50 mph with gusts up to 70 mph 
  possible.
  

* WHERE...Eastern Sierra Slopes above 5000 ft.

* WHEN...From late Tuesday morning through Tuesday evening.

* TIMING...Winds will increase late morning Tuesday, peaking 
  during the mid afternoon hours and continuing through the 
  evening.

* WINDS...30 to 40 mph wind will be common with gusts over 70 mph
  in the higher terrain.

* Impacts...Damaging winds could blow down trees and power 
  lines. Power outages are possible. The very high wind gusts 
  will result in a danger for hikers, campers, or anyone 
  recreating in the higher elevations of the eastern Sierra in 
  Inyo County. 

* ADDITIONAL DETAILS...This watch highlights the areas of the
  highest potential wind gusts on Tuesday. Lesser wind gusts, but
  still strong, are likely in nearby locations such as the Owens
  Valley where gusts up to 60 mph may be possible. 

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.

A High Wind Warning means a hazardous high wind event is expected
or occurring. Strong winds can make driving dangerous...rapidly
reduce visibility in dust prone areas and lead to property
damage.

&&

$$

CAZ520-131200-
/O.NEW.KVEF.HW.W.0003.210413T1800Z-210414T0500Z/
Owens Valley-
Including the cities of Bishop, Independence, Lone Pine, 
and Olancha
147 PM PDT Mon Apr 12 2021

...HIGH WIND WARNING IN EFFECT FROM 11 AM TO 10 PM PDT TUESDAY...

The National Weather Service in Las Vegas has issued a High Wind
Warning, which is in effect from 11 AM to 10 PM PDT Tuesday. 

* TIMING...Wind will increase late morning Tuesday, peaking during
  the mid afternoon hours and continuing through the evening.

* WINDS...Winds of 35 to 45 mph will be common, particularly in 
  the lower Owens Valley. Gusts to 60 mph are possible.

* IMPACTS...Damaging winds could blow down trees and power lines.
  Power outages are possible. Large and high profile vehicles on
  U.S. 395 will be subject to strong crosswinds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Strong winds can make driving dangerous...rapidly
reduce visibility in dust prone areas and lead to property
damage.

&&

$$

CAZ523-131200-
/O.UPG.KVEF.HW.A.0003.210413T1800Z-210414T0500Z/
/O.NEW.KVEF.WI.Y.0021.210413T1800Z-210414T0500Z/
Western Mojave Desert-
Including the cities of Barstow, Daggett, and Fort Irwin
147 PM PDT Mon Apr 12 2021

...WIND ADVISORY IN EFFECT FROM 11 AM TO 10 PM PDT TUESDAY...

The National Weather Service in Las Vegas has issued a Wind
Advisory, which is in effect from 11 AM to 10 PM PDT Tuesday. The
High Wind Watch is no longer in effect. 

* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph 
  possible. 

* WHERE...Western Mojave Desert.

* WHEN...Late Tuesday morning through Tuesday evening.

* TIMING...Wind will increase late morning Tuesday, peaking during
  the mid afternoon hours and continuing through the evening.

* WINDS...Winds of 25 to 35 mph will be common with occasional
  gusts to 55 mph. 

* IMPACTS...Locally damaging winds could blow down trees and power
  lines. Some power outages are possible. Travel could be
  difficult, especially for high profile vehicles. There will be
  reduced visibility in areas prone to blowing dust. 

* ADDITIONAL DETAILS...This watch highlights the areas of the 
  highest potential wind gusts on Tuesday. Lesser wind gusts, 
  but still strong, are likely in several surrounding locations 
  Tuesday. 

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.

A Wind Advisory means strong winds gusting over 40 mph can make
driving difficult...especially for high profile vehicles. Use
extra caution.

&&

$$

AZZ001-036-CAZ521-522-524-NVZ014-016>022-131200-
/O.NEW.KVEF.WI.Y.0021.210413T1800Z-210414T0500Z/
Northwest Plateau-Lake Mead National Recreation Area-
White Mountains of Inyo County-Death Valley National Park-
Eastern Mojave Desert-Esmeralda and Central Nye County-
Northeast Clark County-Western Clark and Southern Nye County-
Sheep Range-Spring Mountains-Red Rock Canyon-Las Vegas Valley-
Southern Clark County-
Including the cities of Colorado City, 
Pipe Spring National Monument, Tuweep, Mt Trumbull, 
Western Grand Canyon, Bullhead City, Oatman, Mohave Valley, 
Westgard Pass, Bristlecone Pine, Furnace Creek, Stovepipe Wells, 
Shoshone, Baker, Mountain Pass, Mitchell Caverns, Beatty, 
Goldfield, Silver Peak, Dyer, Mesquite, Overton, Moapa, Pahrump, 
Indian Springs, Desert Rock, Amargosa Valley, Hayford Pk, 
The Town Of Mt Charleston, Red Rock Canyon, Las Vegas, 
North Las Vegas, Henderson, Boulder City, Hoover Dam, Laughlin, 
Primm, Searchlight, and Cal-Nev-Ari
147 PM PDT Mon Apr 12 2021 /147 PM MST Mon Apr 12 2021/

...WIND ADVISORY IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 10 PM
PDT /10 PM MST/ TUESDAY...

The National Weather Service in Las Vegas has issued a Wind
Advisory, which is in effect from 11 AM PDT /11 AM MST/ to 10 PM
PDT /10 PM MST/ Tuesday. 

* TIMING...Wind will increase late morning Tuesday, peaking during
  the mid afternoon hours and continuing through the evening.

* WINDS...Winds of 25 to 35 mph will be common with occasional
  gusts to 55 mph.

* IMPACTS...Locally damaging winds could blow down trees and power
  lines. Some power outages are possible. Travel could be
  difficult, especially for high profile vehicles. There will be
  reduced visibility in areas prone to blowing dust.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means strong winds gusting over 40 mph can make
driving difficult...especially for high profile vehicles. Use
extra caution.

&&

$$

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 12, 1:47 PM PDTHigh Wind WarningVEFInyo, San Bernardino36 hr
Apr 12, 1:47 PM PDTWind AdvisoryVEFInyo, San Bernardino36 hr
Apr 12, 1:48 PM PDTRed Flag WarningVEFInyo, San Bernardino, Tulare32 hr

Nearby

High Wind Watches in California, 2021Every high wind watch in 2021

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.