Alert archive / California / High Wind Warnings in 2021

High Wind Warning 9, NWS San Diego, CA

November 24, 20214 counties in California

NWS San Diego, CA issued this high wind warning at Nov 24, 2021, 3:29 AM PST for 4 counties in California. It took effect at Nov 24, 2021, 6:00 PM PST. It was in force for 21 hr. 18 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Nov 24, 2021, 3:29 AM PST (11:29 UTC)
In effect from: Nov 24, 2021, 6:00 PM PST
Expired: Nov 25, 2021, 3:00 PM PST
In force: 21 hr
Issued by: NWS San Diego, CA

Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA

The radar

The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 11:27 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.

What was reported inside it

Time	Report	Where	Remark
Nov 24, 6:53 PM PST	NON-TSTM WND GST 51	Ontario, CA	KONT ONTARIO AIRPORT.
Nov 24, 10:50 PM PST	NON-TSTM WND DMG	2 Nw Fountain Valley, CA	ORANGE COUNTY FIRE AUTHORITY REPORTED POWER LINES DOWN IN WESTMINSTER. TREES AND SHEDS CAUGHT FIRE, AND FIRE SPREAD TO HOMES. NEARBY MESONET STATIONS AND LOS ALAMITOS ASOS REPORTED WIND GUSTS WERE BETWEEN 25 AND 30 MPH AT THE TIME.
Nov 25, 12:00 AM PST	NON-TSTM WND DMG	3 Sse Huntington Beach, CA	SOCIAL MEDIA REPORT OF A TREE DOWN ON A CAR IN HUNTINGTON BEACH. TIME OF DAMAGE UNKNOWN. WIND GUSTS AT HUNTINGTON BEACH PIER WERE BETWEEN 35-50 MPH OVERNIGHT.
Nov 25, 12:13 AM PST	NON-TSTM WND GST 62	13 Sw La Quinta, CA	MESONET STATION HP003 TORO PEAK (HPWREN) REPORTS WIND GUST OF 62 MPH IN SANTA ANA WINDS.
Nov 25, 12:46 AM PST	NON-TSTM WND DMG	1 Nw Santa Ana, CA	MULTIPLE TREES DOWN IN SANTA ANA OVERNIGHT ALONG SOUTH PACIFIC AVE, SOUTH MAGNOLIA AVE, AND WEST CHESTNUT AVE. NEARBY MESONETS IN SANTA ANA REPORTED WIND GUSTS BETWEEN 25 AND 40 MPH.
Nov 25, 1:20 AM PST	NON-TSTM WND GST 68	9 Ssw Julian, CA	MESONET STATION SILSD SILL HILL (SDGE) REPORTS WIND GUST OF 68 MPH IN SANTA ANA WINDS.
Nov 25, 1:30 AM PST	NON-TSTM WND GST 66	6 Nne Mission Viejo, CA	MESONET STATION 164SE MODJESKA CYN (164SE) REPORTS WIND GUST OF 66 MPH IN SANTA ANA WINDS.
Nov 25, 2:08 AM PST	NON-TSTM WND GST 69	5 Ene Yorba Linda, CA	MESONET STATION CQHC1 CHINO HILLS STATE PARK REPORTS WIND GUST OF 69 MPH IN SANTA ANA WINDS.
Nov 25, 2:30 AM PST	NON-TSTM WND GST 64	5 Nnw San Bernardino, CA	MESONET STATION 039SE SHANDIN HILLS (039SE) REPORTS WIND GUST OF 64 MPH IN SANTA ANA WINDS.
Nov 25, 2:51 AM PST	NON-TSTM WND GST 74	8 Ene Orange, CA	MESONET STATION FRCC1 FREMONT CANYON REPORTS WIND GUST OF 74 MPH IN SANTA ANA WINDS.
Nov 25, 3:10 AM PST	NON-TSTM WND GST 73	6 Wnw Campo, CA	MESONET STATION HAUSD HAUSER MOUNTAIN REPORTS WIND GUST OF 73 MPH IN SANTA ANA WINDS.
Nov 25, 3:23 AM PST	NON-TSTM WND GST 62	1 Ese Ontario, CA	ASOS STATION KONT ONTARIO INTERNATIONAL AIRPORT REPORTS WIND GUST OF 62 MPH IN SANTA ANA WINDS.
Nov 25, 3:40 AM PST	NON-TSTM WND GST 75	4 N Fontana, CA	MESONET STATION SE685 FONTANA (SCE685) GUSTS TO 75 MPH IN SANTA ANA WINDS.
Nov 25, 3:40 AM PST	NON-TSTM WND GST 76	3 S Crestline, CA	MESONET STATION 189SE ARROWHEAD SPRINGS (189SE) REPORTS GUST OF 76 MPH IN SANTA ANA WINDS.
Nov 25, 4:40 AM PST	NON-TSTM WND GST 61	7 E Valley Center, CA	MESONET STATION HHCSD HELLHOLE CANYON (SDGE) REPORTS WIND GUST OF 61 MPH IN SANTA ANA WINDS.
Nov 25, 5:18 AM PST	NON-TSTM WND GST 61	3 E Fullerton, CA	MESONET STATION FW0063 FULLERTON CSU REPORTS WIND GUST OF 61 MPH IN SANTA ANA WINDS.
Nov 25, 6:00 AM PST	NON-TSTM WND DMG	Ontario, CA	SOCIAL MEDIA REPORT OF A LARGE TREE DOWN AT ONTARIO AIRPORT CONTROL TOWER PARKING LOT. WIND GUST OF 62 MPH WAS REPORTED BY THE ONTARIO ASOS AT THE TIME.
Nov 25, 10:45 AM PST	WILDFIRE	1 Ssw Santee, CA	DELAYED REPORT. VEGETATION FIRE IN WALKER PRESERVE CALLED MAGNOLIA ERUPTED AT 1045 AM THURSDAY NOVEMBER 25. IT BURNED 18 ACRES AND PROMPTED EVACUATION WARNINGS. THE WILDFIRE WAS STOPPED FORWARD PROGRESS BY 1 PM. A RED FLAG WARNING WAS IN EFFECT FOR INLAND VALL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

San Diego, CA (KNKX), launched 00:00Z, 11.5 hours before the alert went out and 124 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: 2496 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

840 
WWUS76 KSGX 241129
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
329 AM PST Wed Nov 24 2021

CAZ048-055>057-065-554-242315-
/O.NEW.KSGX.HW.W.0009.211125T0200Z-211125T2300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning-
Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Fontana, 
Rancho Cucamonga, Corona, Crestline, Running Springs, 
Idyllwild-Pine Cove, Desert Hot Springs, and Mission Viejo
329 AM PST Wed Nov 24 2021

...HIGH WIND WARNING IN EFFECT FROM 6 PM THIS EVENING TO 3 PM PST
THURSDAY...

* WHAT...Northeast winds 20 to 30 mph with gusts to 55 mph 
  expected. Gusts to 75 mph near and below the Cajon Pass and near
  the coastal foothills of the Santa Ana Mountains. 

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire, San Bernardino County Mountains, Riverside County 
  Mountains, Santa Ana Mountains and Foothills, San Gorgonio 
  Pass Near Banning and Orange County Inland Areas.

* WHEN...From 6 PM this evening to 3 PM PST Thursday.

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

* ADDITIONAL DETAILS...The strongest winds are expected for
  tonight into Thursday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CAZ050-058-242315-
/O.NEW.KSGX.HW.A.0008.211125T0500Z-211125T2300Z/
San Diego County Valleys-San Diego County Mountains-
Including the cities of Julian and Pine Valley
329 AM PST Wed Nov 24 2021

...HIGH WIND WATCH IN EFFECT FROM THIS EVENING THROUGH THURSDAY
AFTERNOON...

* WHAT...Northeast winds 20 to 30 mph with gusts to 50 mph
  possible. Isolated gusts to 65 mph in the mountains.

* WHERE...San Diego County Valleys and San Diego County 
  Mountains.

* WHEN...From this evening through Thursday afternoon.

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

* ADDITIONAL DETAILS...The stronger winds are expected for late
  tonight into Thursday morning.

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
http://weather.gov/sandiego

17

5 follow-up statements

939 
WWUS76 KSGX 242057
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
1257 PM PST Wed Nov 24 2021

CAZ050-058-242200-
/O.CAN.KSGX.HW.A.0008.211125T0500Z-211125T2300Z/
San Diego County Valleys-San Diego County Mountains-
1257 PM PST Wed Nov 24 2021

...HIGH WIND WATCH IS CANCELLED...

A Red Flag Warning for strong, gusty winds and low humidity 
is in effect for portions of the San Diego County mountains and 
valleys. 


$$

CAZ048-055>057-065-554-250630-
/O.CON.KSGX.HW.W.0009.211125T0200Z-211125T2300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning-
Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Fontana, 
Rancho Cucamonga, Corona, Crestline, Running Springs, 
Idyllwild-Pine Cove, Desert Hot Springs, and Mission Viejo
1257 PM PST Wed Nov 24 2021

...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO
3 PM PST THURSDAY...

* WHAT...Northeast winds 20 to 30 mph with gusts to 55 mph 
  expected. Gusts to 75 mph near and below the Cajon Pass and 
  near the coastal foothills of the Santa Ana Mountains.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire, San Bernardino County Mountains, Riverside County 
  Mountains, Santa Ana Mountains and Foothills, San Gorgonio 
  Pass Near Banning and Orange County Inland Areas.

* WHEN...From 6 PM this evening to 3 PM PST Thursday.

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

* ADDITIONAL DETAILS...The strongest winds are expected for 
  tonight into Thursday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CO

For more information from the National Weather Service visit
http://weather.gov/sandiego

612 
WWUS76 KSGX 250110
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
510 PM PST Wed Nov 24 2021

CAZ048-055>057-065-554-251300-
/O.CON.KSGX.HW.W.0009.211125T0200Z-211125T2300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning-
Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Fontana, 
Rancho Cucamonga, Corona, Crestline, Running Springs, 
Idyllwild-Pine Cove, Desert Hot Springs, and Mission Viejo
510 PM PST Wed Nov 24 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM THURSDAY...

* WHAT...Northeast winds 25 to 35 mph with gusts to 60 mph 
  expected. Gusts to 75 mph near and below the Cajon Pass and near
  the coastal foothills of the Santa Ana Mountains.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire, San Bernardino County Mountains, Riverside County 
  Mountains, Santa Ana Mountains and Foothills, San Gorgonio 
  Pass Near Banning and Orange County Inland Areas.

* WHEN...Through 3 PM Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego

285 
WWUS76 KSGX 251049
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
249 AM PST Thu Nov 25 2021

CAZ050-058-252000-
/O.EXB.KSGX.HW.W.0009.000000T0000Z-211125T2000Z/
San Diego County Valleys-San Diego County Mountains-
Including the city of Poway
249 AM PST Thu Nov 25 2021

...HIGH WIND WARNING IN EFFECT UNTIL NOON PST TODAY...

* WHAT...Northeast winds 25 to 35 mph with gusts to 60 mph.
  Isolated gusts to 75 mph.

* WHERE...San Diego County Valleys and San Diego County 
  Mountains.

* WHEN...Until noon PST today.

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

* ADDITIONAL DETAILS...The strongest winds are expected between 4
  and 9 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CAZ048-055>057-065-554-252300-
/O.CON.KSGX.HW.W.0009.000000T0000Z-211125T2300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning-
Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Ontario, 
Fontana, Rancho Cucamonga, Corona, Crestline, Big Bear Lake, 
Running Springs, Idyllwild-Pine Cove, Banning, 
Desert Hot Springs, Santa Ana, Anaheim, Orange, and Mission Viejo
249 AM PST Thu Nov 25 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...

* WHAT...Northeast winds 25 to 35 mph with gusts to 60 mph.
  Isolated gusts to 75 mph.

* WHERE...Orange County Inland Areas, San Gorgonio Pass Near 
  Banning, Santa Ana Mountains and Foothills, Riverside County 
  Mountains, San Bernardino County Mountains and San Bernardino 
  and Riverside County Valleys-The Inland Empire.

* WHEN...Until 3 PM PST this afternoon.

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

* ADDITIONAL DETAILS...The strongest winds are expected before 10 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego

17

908 
WWUS76 KSGX 251954
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
1154 AM PST Thu Nov 25 2021

CAZ050-058-252100-
/O.EXP.KSGX.HW.W.0009.000000T0000Z-211125T2000Z/
San Diego County Valleys-San Diego County Mountains-
Including the city of Poway
1154 AM PST Thu Nov 25 2021

...HIGH WIND WARNING WILL EXPIRE AT NOON PST TODAY...

Winds have weakened to below High Wind Warning criteria. Areas of
east to northeast winds with gusts 30 to 40 mph, locally up to 50
mph in wind prone locations in the mountains, will continue 
through Friday morning. 

$$

CAZ048-055>057-065-554-252300-
/O.CON.KSGX.HW.W.0009.000000T0000Z-211125T2300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning-
Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Ontario, 
Fontana, Rancho Cucamonga, Corona, Crestline, Big Bear Lake, 
Running Springs, Idyllwild-Pine Cove, Banning, 
Desert Hot Springs, Santa Ana, Anaheim, Orange, and Mission Viejo
1154 AM PST Thu Nov 25 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM PST THIS
AFTERNOON...

* WHAT...Northeast winds 20 to 30 mph with gusts to 50 to 60 mph.

* WHERE...Orange County Inland Areas, San Gorgonio Pass Near 
  Banning, Santa Ana Mountains and Foothills, Riverside County 
  Mountains, San Bernardino County Mountains and San Bernardino 
  and Riverside County Valleys-The Inland Empire.

* WHEN...Until 3 PM PST this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CO

For more information from the National Weather Service visit
http://weather.gov/sandiego

401 
WWUS76 KSGX 252307
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
307 PM PST Thu Nov 25 2021

CAZ048-055>057-065-554-260015-
/O.EXP.KSGX.HW.W.0009.000000T0000Z-211125T2300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning-
Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Ontario, 
Fontana, Rancho Cucamonga, Corona, Crestline, Big Bear Lake, 
Running Springs, Idyllwild-Pine Cove, Banning, 
Desert Hot Springs, Santa Ana, Anaheim, Orange, and Mission Viejo
307 PM PST Thu Nov 25 2021

...HIGH WIND WARNING HAS EXPIRED...

The Santa Ana Winds have peaked and will continue to lessen
tonight through Friday. Wind gusts of 40 to 50 mph will continue
in the windiest locales downwind of passes and canyons, but
damaging winds are no longer expected. As such, the High Wind 
Warning has been allowed to expire.

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 24, 3:29 AM PST	High Wind Watch	SGX	San Diego	9 hr

Nearby

High Wind Warnings in California, 2021 Every high wind warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.