Alert archive / Arizona / Wind Advisories in 2021

Wind Advisory 34, NWS Las Vegas, NV

November 20, 2021Mohave County, Arizona; San Bernardino County, California

NWS Las Vegas, NV issued this wind advisory at Nov 20, 2021, 2:40 AM MST for Mohave County, Arizona; San Bernardino County, California. It took effect at Nov 21, 2021, 1:00 AM MST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Nov 20, 2021, 2:40 AM MST (09:40 UTC)
In effect from: Nov 21, 2021, 1:00 AM MST
Expired: Nov 21, 2021, 7:00 PM MST
In force: 18 hr
Issued by: NWS Las Vegas, NV

Counties Mohave County, AZ, San Bernardino County, CA

The radar

The Las Vegas radar (KESX), 48 km from the middle of the area, began a volume at 09:40 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, 9.7 hours before the alert went out and 133 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3328 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

409 
WWUS75 KVEF 200940
NPWVEF

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
140 AM PST Sat Nov 20 2021

AZZ002-036-CAZ527-NVZ021-202145-
/O.NEW.KVEF.WI.Y.0034.211121T0800Z-211122T0200Z/
Lake Havasu and Fort Mohave-Lake Mead National Recreation Area-
San Bernardino County-Upper Colorado River Valley-
Including Lake Havasu City, Desert Hills, Topock, Bullhead City, 
Oatman, Mohave Valley, Needles, Hoover Dam, and Laughlin
140 AM PST Sat Nov 20 2021 /240 AM MST Sat Nov 20 2021/

...WIND ADVISORY IN EFFECT FROM MIDNIGHT PST /1 AM MST/ TONIGHT
TO 6 PM PST /7 PM MST/ SUNDAY...

* WHAT...North winds 20 to 30 mph with gusts up to 45 mph 
  expected.

* WHERE...In Arizona, Lake Havasu and Fort Mohave and Lake Mead
  National Recreation Area. In California, San Bernardino County-
  Upper Colorado River Valley. In Nevada, Lake Mead National 
  Recreation Area.

* WHEN...From midnight PST /1 AM MST/ tonight to 6 PM PST /7 PM 
  MST/ Sunday.

* IMPACTS...Strong north winds over the open waters will make the
  lake water rough and hazardous...and may result in high waves
  which may tip or swamp smaller craft. Drivers of high profile
  vehicles will encounter strong crosswinds along west to east
  oriented highways. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your personal safety...avoid the open waters on lakes in the
advisory area. Stay close to shore or around protected areas. Use
extra caution when driving, especially if operating a high 
profile vehicle. Secure outdoor objects.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/lasvegas

3 follow-up statements

294 
WWUS75 KVEF 201803
NPWVEF

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
1003 AM PST Sat Nov 20 2021

AZZ002-036-CAZ527-NVZ021-210830-
/O.CON.KVEF.WI.Y.0034.211121T0800Z-211122T0200Z/
Lake Havasu and Fort Mohave-Lake Mead National Recreation Area-
San Bernardino County-Upper Colorado River Valley-
Including Lake Havasu City, Desert Hills, Topock, Bullhead City, 
Oatman, Mohave Valley, Needles, Hoover Dam, and Laughlin
1003 AM PST Sat Nov 20 2021 /1103 AM MST Sat Nov 20 2021/

...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT PST /1 AM MST/
TONIGHT TO 6 PM PST /7 PM MST/ SUNDAY...

* WHAT...North winds 20 to 30 mph with gusts up to 50 mph 
  expected.

* WHERE...In Arizona, Lake Havasu and Fort Mohave and Lake Mead 
  National Recreation Area. In California, San Bernardino County-
   Upper Colorado River Valley. In Nevada, Lake Mead National 
  Recreation Area.

* WHEN...From midnight PST /1 AM MST/ tonight to 6 PM PST /7 PM 
  MST/ Sunday.

* IMPACTS...Strong north winds over the open waters will make the
  lake water rough and hazardous, and may result in high waves 
  which may tip or swamp smaller craft. Drivers of high profile 
  vehicles will encounter strong crosswinds along west to east 
  oriented highways.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your personal safety...avoid the open waters on lakes in the
advisory area. Stay close to shore or around protected areas. Use
extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

Morgan

For more information from the National Weather Service visit
https://weather.gov/lasvegas

629 
WWUS75 KVEF 210833
NPWVEF

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
1233 AM PST Sun Nov 21 2021

AZZ002-036-CAZ527-NVZ021-220200-
/O.CON.KVEF.WI.Y.0034.000000T0000Z-211122T0200Z/
Lake Havasu and Fort Mohave-Lake Mead National Recreation Area-
San Bernardino County-Upper Colorado River Valley-
Including Lake Havasu City, Desert Hills, Topock, Bullhead City, 
Oatman, Mohave Valley, Needles, Hoover Dam, and Laughlin
1233 AM PST Sun Nov 21 2021 /133 AM MST Sun Nov 21 2021/

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST /7 PM MST/ THIS
EVENING...

* WHAT...North winds 20 to 30 mph with gusts up to 50 mph 
  expected.

* WHERE...In Arizona, Lake Havasu and Fort Mohave and Lake Mead 
  National Recreation Area. In California, San Bernardino County-
   Upper Colorado River Valley. In Nevada, Lake Mead National 
  Recreation Area.

* WHEN...Through 6 PM PST /7 PM MST/ today.

* IMPACTS...Strong north winds over the open waters will make 
  the lake water rough and hazardous, and may result in high 
  waves which may tip or swamp smaller craft. Drivers of high 
  profile vehicles will encounter strong crosswinds along west 
  to east oriented highways.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your personal safety...avoid the open waters on lakes in the
advisory area. Stay close to shore or around protected areas. Use
extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/lasvegas

571 
WWUS75 KVEF 220136
NPWVEF

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
536 PM PST Sun Nov 21 2021

AZZ002-036-CAZ527-NVZ021-220245-
/O.EXP.KVEF.WI.Y.0034.000000T0000Z-211122T0200Z/
Lake Havasu and Fort Mohave-Lake Mead National Recreation Area-
San Bernardino County-Upper Colorado River Valley-
Including Lake Havasu City, Desert Hills, Topock, Bullhead City, 
Oatman, Mohave Valley, Needles, Hoover Dam, and Laughlin
536 PM PST Sun Nov 21 2021 /636 PM MST Sun Nov 21 2021/

...WIND ADVISORY WILL EXPIRE AT 6 PM PST /7 PM MST/ THIS
EVENING...

WINDS IN THE COLORADO RIVER VALLEY HAVE FALLEN BELOW ADVISORY
CRITERIA. STRONG NORTHERLY WINDS WILL CONTINUE THROUGH THE EVENING
FOR SOME PORTIONS OF THE COLORADO RIVER VALLEY. HOWEVER, WIND
GUSTS IN EXCESS OF 40 MPH ARE NOT EXPECTED.

$$

For more information from the National Weather Service visit
https://weather.gov/lasvegas

Nearby

Wind Advisories in Arizona, 2021 Wind Advisories in California, 2021 Wind Advisories in Nevada, 2021 Every wind advisory 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.