Alert archive / California / High Wind Warnings in 2023

High Wind Warning 6, NWS San Diego, CA

February 23, 2023San Bernardino County, California

NWS San Diego, CA issued this high wind warning at Feb 23, 2023, 1:45 PM PST for San Bernardino County, California. It took effect at Feb 24, 2023, 8:00 AM PST. It was in force for 16 hr. 15 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
Feb 23, 2023, 1:45 PM PST (21:45 UTC)
In effect from
Feb 24, 2023, 8:00 AM PST
Expired
Feb 25, 2023, 12:00 AM PST
In force
16 hr
Issued by
NWS San Diego, CA

County San Bernardino County, CA

The radar

The Edwards AFB radar (KEYX), 129 km from the middle of the area, began a volume at 21:47 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

TimeReportWhereRemark
Feb 24, 8:24 AM PSTSNOW 12Wrightwood, CASTILL SNOWING, TOTAL SO FAR.
Feb 24, 1:20 PM PSTFLOOD5 Nnw Fontana, CADUNCAN CANYON ROAD OFFRAMP HAS VEHICLES STOPPED (OFF I-15) AND ONE IN 2 FEET OF MUD. RAINFALL 0.25 PER HOUR AND 0.75 PAST 3 HOURS IN LYTLE CREEK.
Feb 24, 2:20 PM PSTSNOW 242 Ne Lake Arrowhead, CAVAN STUCK IN SNOW.
Feb 24, 3:00 PM PSTHEAVY SNOW 364 W Big Bear Lake, CACHP AND CALTRANS HAVE HARD CLOSURE ON HIGHWAY 18 ARCTIC CIRCLE AND HIGHWAY 330. AREA WAS SWEPT AND NO VEHICLES. NUMEROUS VEHICLES WERE DISABLED AND STUCK AT 830 AM LEADING TO CLOSURES. THIS AREA HAS RECEIVED 20 TO 40 INCHES OF SNOW SINCE WEDNESDAY.
Feb 24, 3:41 PM PSTSNOW 201 W Wrightwood, CACURRENT STORM TOTAL AT WEST WRIGHTWOOD 6275 FEET. 9 INCHES SINCE 8 AM TODAY.
Feb 24, 4:00 PM PSTHEAVY SNOW 182 Sse Crestline, CAVEHICLES STUCK IN SNOW ON SR 18 AND RIM OF THE WORLD HIGHWAY. HEAVY SNOW OCCURRING ABOVE 4000 FEET.
Feb 24, 4:43 PM PSTSNOW 242 N Lake Arrowhead, CATRUCK STUCK IN 2 FEET OF SNOW.
Feb 24, 5:00 PM PSTSNOW 256 Se Big Bear Lake, CACHP REPORTS VEHICLES STUCK IN SNOW. AREA HAD RECEIVED 25 INCHES OF SNOW PAST 2 DAYS. HIGHWAY 38.
Feb 24, 5:49 PM PSTSNOW 125 Sse Crestline, CAHIGHWAY 18 WATERMAN CANYON CLOSED FROM BOTTOM TO VISTA POINT DUE TO SNOW CONDITIONS AND MULTIPLE VEHICLES STUCK AT 4000 FEET.
Feb 24, 6:08 PM PSTSNOW 63 Ssw Phelan, CAHARD CLOSURE ON SR 138. ICY ROADWAY. CALTRANS CAMERA SHOWS SIGNIFICANT SNOW ON ROADWAY NEAR 4800 FEET.
Feb 24, 8:30 PM PSTFLOOD5 Nne Devore, CAVEHICLE STUCK IN MUD ON CLEGHORN ROAD OFF OF SR 138. SEARCH AND RESCUE IN PLACE AT MIDNIGHT.
Feb 24, 8:45 PM PSTFLASH FLOOD2 Ese Lytle Creek, CASAN BERNARDINO COUNTY FIRE REPORTS SWIFT WATER RESCUE OF ONE OCCUPANT FROM A TRUCK. VIDEO SHOWS RUSHING WATER ABOUT HALF WAY UP THE TRUCK. OCCUPANT WAS RESCUED AND BROUGHT TO SAFETY AND ASSESSED FOR INJURIES.
Feb 24, 9:29 PM PSTSNOW 181 Ese Wrightwood, CAORCHARD DRIVE AND LAUSANNE DRIVE VEHICLES STUCK IN SNOW. 1.5 FEET OF SNOW ON ROADWAY.
Feb 24, 10:30 PM PSTSNOW 242 Nne Lake Arrowhead, CA3 VEHICLES STUCK IN SNOW AT SR 173 AND NORTH BAY RD.
Feb 24, 11:01 PM PSTSNOW 246 Nw Forest Falls, CAVEHICLE STUCK IN SNOW ON HIGHWAY 38. TWO FEET NEW OF NEW SNOW.

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

The nearest sounding before it

Las Vegas, NV (KVEF), launched 12:00Z, 9.8 hours before the alert went out and 180 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 12:00Z on 2023-02-23Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Las Vegas, NV at 12:00Z on 2023-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 square meters per square second.1939587897Sfc1 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
1413 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

248 
WWUS76 KSGX 232145
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
145 PM PST Thu Feb 23 2023

CAZ060-240545-
/O.UPG.KSGX.HW.A.0006.230224T1600Z-230225T0800Z/
/O.NEW.KSGX.HW.W.0006.230224T1600Z-230225T0800Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, Apple Valley, 
and Lucerne Valley
145 PM PST Thu Feb 23 2023

...HIGH WIND WARNING IN EFFECT FROM 8 AM FRIDAY TO MIDNIGHT PST
FRIDAY NIGHT...

* WHAT...South winds 30 to 40 mph with gusts to 60 mph expected.
  Isolated gusts to 75 mph near the desert slopes of the
  mountains.

* WHERE...Apple and Lucerne Valleys.

* WHEN...From 8 AM Friday to midnight PST Friday night.

* IMPACTS...Strong winds could damage trees and other objects. 
  Travel will be difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CAZ552-554-240545-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Huntington Beach, Costa Mesa, 
Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, 
Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo
145 PM PST Thu Feb 23 2023

...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO 6 AM PST
SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 55 mph expected.

* WHERE...Orange County Coastal Areas and Orange County Inland 
  Areas.

* WHEN...From 6 AM Friday to 6 AM PST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ043-048-050-240545-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
San Diego County Coastal Areas-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Diego County Valleys-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas, 
Chula Vista, National City, San Diego, Riverside, San Bernardino,
Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, 
Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway
145 PM PST Thu Feb 23 2023

...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO 6 AM PST
SATURDAY...

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

* WHERE...San Diego County Coastal Areas, San Bernardino and 
  Riverside County Valleys-The Inland Empire and San Diego 
  County Valleys.

* WHEN...From 6 AM Friday to 6 AM PST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ057-240545-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
Santa Ana Mountains and Foothills-
145 PM PST Thu Feb 23 2023

...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO 6 AM PST
SATURDAY...

* WHAT...South winds 30 to 40 mph with gusts to 55 mph expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...From 6 AM Friday to 6 AM PST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

Connolly
4 follow-up statements
035 
WWUS76 KSGX 240500
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
900 PM PST Thu Feb 23 2023

CAZ060-241400-
/O.CON.KSGX.HW.W.0006.230224T1600Z-230225T0800Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, Apple Valley, 
and Lucerne Valley
900 PM PST Thu Feb 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM 8 AM FRIDAY TO
MIDNIGHT PST FRIDAY NIGHT...

* WHAT...South winds 30 to 40 mph with gusts to 65 mph expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...From 8 AM Friday to midnight PST Friday night.

* IMPACTS...Strong winds could damage trees and other objects. 
  Travel will be difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CAZ552-554-241400-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Huntington Beach, Costa Mesa, 
Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, 
Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo
900 PM PST Thu Feb 23 2023

...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO 6 AM PST
SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 50 mph expected.

* WHERE...Orange County Coastal Areas and Orange County Inland 
  Areas.

* WHEN...From 6 AM Friday to 6 AM PST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ043-048-050-241400-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
San Diego County Coastal Areas-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Diego County Valleys-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas, 
Chula Vista, National City, San Diego, Riverside, San Bernardino,
Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, 
Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway
900 PM PST Thu Feb 23 2023

...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO 6 AM PST
SATURDAY...

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

* WHERE...San Diego County Coastal Areas, San Bernardino and 
  Riverside County Valleys-The Inland Empire and San Diego 
  County Valleys.

* WHEN...From 6 AM Friday to 6 AM PST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ057-241400-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
Santa Ana Mountains and Foothills-
900 PM PST Thu Feb 23 2023

...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM FRIDAY TO 6 AM PST
SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 55 mph expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...From 6 AM Friday to 6 AM PST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

JMB
620 
WWUS76 KSGX 241121
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
321 AM PST Fri Feb 24 2023

CAZ060-242115-
/O.CON.KSGX.HW.W.0006.230224T1600Z-230225T0800Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, Apple Valley, 
and Lucerne Valley
321 AM PST Fri Feb 24 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM 8 AM TODAY TO 
MIDNIGHT TONIGHT...

* WHAT...South winds 30 to 40 mph with gusts to 65 mph expected.

* WHERE...Apple and Lucerne Valleys.

* IMPACTS...Strong winds could damage trees and other objects. 
  Travel will be difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CAZ552-554-242115-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Huntington Beach, Costa Mesa, 
Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, 
Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo
321 AM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT THROUGH 6 AM SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 50 mph expected.

* WHERE...Orange County Coastal and Inland Areas.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ043-048-050-242115-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
San Diego County Coastal Areas-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Diego County Valleys-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas, 
Chula Vista, National City, San Diego, Riverside, San Bernardino,
Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, 
Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway
321 AM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT THROUGH 6 AM SATURDAY...

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

* WHERE...San Diego County Coastal Areas, San Diego County
  Valleys, the Inland Empire.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ057-242115-
/O.CON.KSGX.WI.Y.0016.230224T1400Z-230225T1400Z/
Santa Ana Mountains and Foothills-
321 AM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT THROUGH 6 AM SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 55 mph expected.

* WHERE...Santa Ana Mountains and Foothills.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$
255 
WWUS76 KSGX 242207
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
207 PM PST Fri Feb 24 2023

CAZ060-250615-
/O.CON.KSGX.HW.W.0006.000000T0000Z-230225T0800Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, Apple Valley, 
and Lucerne Valley
207 PM PST Fri Feb 24 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PST
TONIGHT...

* WHAT...South winds 30 to 40 mph with gusts to 65 mph expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until midnight tonight.

* IMPACTS...Strong winds could damage trees and other objects. 
  Travel will be difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CAZ552-554-250615-
/O.CON.KSGX.WI.Y.0016.000000T0000Z-230225T1400Z/
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Huntington Beach, Costa Mesa, 
Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, 
Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo
207 PM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 50 mph expected.

* WHERE...Orange County Coastal and Inland Areas.

* WHEN...Until 6 AM Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ043-048-050-250615-
/O.CON.KSGX.WI.Y.0016.000000T0000Z-230225T1400Z/
San Diego County Coastal Areas-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Diego County Valleys-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas, 
Chula Vista, National City, San Diego, Riverside, San Bernardino,
Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, 
Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway
207 PM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST SATURDAY...

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

* WHERE...San Diego County Coastal Areas, San Diego County 
  Valleys, the Inland Empire.

* WHEN...Until 6 AM Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ057-250615-
/O.CON.KSGX.WI.Y.0016.000000T0000Z-230225T1400Z/
Santa Ana Mountains and Foothills-
207 PM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 55 mph expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...Until 6 AM Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$
698 
WWUS76 KSGX 250424
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
824 PM PST Fri Feb 24 2023

CAZ060-250800-
/O.CON.KSGX.HW.W.0006.000000T0000Z-230225T0800Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, Apple Valley, 
and Lucerne Valley
824 PM PST Fri Feb 24 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PST
TONIGHT...

* WHAT...South winds 30 to 40 mph with gusts to 65 mph expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until midnight tonight.

* IMPACTS...Strong winds could damage trees and other objects.
  Travel will be difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution if you must drive.

&&

$$

CAZ552-554-251230-
/O.CON.KSGX.WI.Y.0016.000000T0000Z-230225T1400Z/
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Huntington Beach, Costa Mesa, 
Newport Beach, Laguna Beach, San Clemente, Santa Ana, Anaheim, 
Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo
824 PM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 50 mph expected.

* WHERE...Orange County Coastal and Inland Areas.

* WHEN...Until 6 AM Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ043-048-050-251230-
/O.CON.KSGX.WI.Y.0016.000000T0000Z-230225T1400Z/
San Diego County Coastal Areas-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Diego County Valleys-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas, 
Chula Vista, National City, San Diego, Riverside, San Bernardino,
Ontario, Moreno Valley, Fontana, Rancho Cucamonga, Corona, 
Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway
824 PM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST SATURDAY...

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

* WHERE...San Diego County Coastal Areas, San Diego County 
  Valleys, the Inland Empire.

* WHEN...Until 6 AM Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

CAZ057-251230-
/O.CON.KSGX.WI.Y.0016.000000T0000Z-230225T1400Z/
Santa Ana Mountains and Foothills-
824 PM PST Fri Feb 24 2023

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM PST SATURDAY...

* WHAT...South winds 25 to 35 mph with gusts to 55 mph expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...Until 6 AM Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$
Gregoria

What forecasters said that day

The local office's own words before this high wind warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Diego, CA wrote its last area forecast discussion before this high wind warning went out at Feb 23, 9:46 AM PST, 3 hours 59 minutes earlier.

Area forecast discussion, Feb 23, 9:46 AM PST, 3 hours 59 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
946 AM PST Thu Feb 23 2023

.SYNOPSIS...
Showers will continue throughout the day today, with snow in the
mountains. Rain and mountain snow will become more widespread and
heavy Friday and Saturday. Dangerous travel conditions are
expected in the mountains Friday and Saturday due to heavy snow
accumulation and strong winds. Precipitation will taper off late
Saturday and Sunday, with more rain possible early to the middle
of next week.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

At 9 AM, showers were ongoing across the region, especially in San
Diego County. These showers are expected to continue off and on
throughout the day, with the heavier and more widespread showers
over and west of the mountains. Low elevation snow was observed
overnight, with snow reported down to 2000 feet in the Inland
Empire and San Diego County valleys.

Snow levels have been hovering around 2500-3000 feet
this morning, and will gradually rise throughout the day today,
reaching 3500-4000 feet by tonight. Snow showers will continue
today above 3000 feet today, with accumulations expected
generally above 4000 feet in the mountains. In the mountains, the
highest snow accumulations today and tonight will be above 5000
feet, with 12 to 20 inches expected at those elevations. A few
inches of snow will accumulate between 4000 and 5000 feet. The
higher snowfall totals will generally be confined to the southern
mountains (Riverside and San Diego County mountains) today and
tonight. While the San Bernardino Mountains will get some
appreciable snow amounts from this first system, the second system
Friday and Saturday is expected to bring even more snow for them.

A second storm system will drop south into California Friday and
Saturday, bringing additional rounds of precipitation and mountain
snow. As the system drops south into Southern California, it is
expected to tap into weak atmospheric river moisture, which will
increase the amount of rain and mountain snow we receive.
Integrated Water Vapor values are looking to peak Friday night
through Saturday morning, which is when we are expecting the
heaviest rainfall at lower elevations. Precipitation from this
system will be widespread and heavy at times. Please see the
hydrology section below for more details on the precipitation
amounts and timing.

Heavy snow and gusty winds will create dangerous conditions in
the mountains through this weekend. Snowfall is expected on all
of the mountain ranges with the highest accumulations expected in
the San Bernardino and portions of the Riverside County mountains.
Top forecast snowfall totals of 4 to up to 7 feet on the highest
peaks.

Winds in the mountains and deserts are also expected to be strong
with this system, especially on Friday ahead of the main cold
front. The combination of very heavy snow, low visibilities from
snow, blowing snow, and fog, and strong gusty south winds,
blizzard conditions are expected at times in the mountains.

Precipitation looks to taper off later on Saturday, with Sunday
currently expected to be a mostly dry day. There is still some
spread in the ensembles on exactly when the rainfall is expected
to end, so this could change in the coming days.

In short, this will be a highly impactful storm in which we have
not experienced in years. Feet of snow will fall in the mountains,
and there will be flooding concerns at lower elevations. Please
please avoid all travel in the mountains through the weekend. If
you're out and about at lower elevations, take it slow driving,
and give yourself more space between the cars in front of you. Be
safe everyone!

&&

.AVIATION...
231625Z...Scattered SHRA continue today. Bases in SHRA 1200-1800 FT
MSL with locally reduced vis of 3-5 SM in heavier cells. SCT-BKN
with bases 3000-5000 FT MSL with tops over 10,000 FT MSL.

Breezy W-SW winds over the mtns/desert slopes today, peaking through
04z Fri. Peak gusts of 35-45 kt, local gusts over 50 kt wind-prone
passes/canyons.

&&

.MARINE...
Scattered showers will continue this morning and afternoon over the
coastal waters. Winds may become gusty and erratic near showers.
Increasing southerly winds early Friday morning, reaching Gale Force
by late morning. Very strong winds and hazardous seas will occur
through Saturday morning. A Gale Watch is in effect from Friday
morning through Saturday morning. Winds will turn to the west and
decrease by Saturday afternoon. No additional marine hazards are
expected Saturday afternoon through Monday.

&&

.HYDROLOGY...

Showers will continue throughout the day today. A few tenths of
an inch will accumulate at lower elevations, and around 1 inch
(liquid equivalent) is expected in the mountains through tonight.

Rainfall will become more widespread and heavy on Friday into
Saturday as the second system pushes south, tapping into
atmospheric river moisture. The heaviest rainfall will be
associated with the cold front, which is expected to pass through
late Friday night through Saturday morning.

Forecast rainfall totals through Saturday:

San Diego County coast and valleys: 2 to 3 inches
Orange County coast and inland: 3 to 4 inches
Inland Empire: 2 to 3 inches
San Bernardino Co Mtns: 4 to 7 inches (liquid equivalent)
Riverside Co Mtns: 3 to 5 inches (liquid equivalent)
San Diego Co Mtns: 4 to 6 inches (liquid equivalent)
High Desert: 1 to 2.5 inches
Coachella Valley and San Diego Co Deserts: 0.25 to 1 inch

A Flood Watch remains in effect from Friday afternoon through
Saturday evening.

There are also concerns about the local rivers having flow from
this rainfall. Currently, the San Diego River at Fashion Valley
and the Santa Margarita River at Ysidora is expected to reach
action (monitor) stage on Saturday, peaking around 10 to 11 feet.
These values are fairly close to flood stage, so the forecast
could change as we get closer to the event.

&&

.SKYWARN...
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory from 6 AM Friday to 6 AM PST Saturday for Orange
     County Coastal Areas-Orange County Inland Areas-San
     Bernardino and Riverside County Valleys-The Inland Empire-
     San Diego County Coastal Areas-San Diego County Valleys-
     Santa Ana Mountains and Foothills.

     Flood Watch from Friday afternoon through Saturday evening for
     San Diego County Coastal Areas-San Diego County Mountains-
     San Diego County Valleys.

     Winter Weather Advisory until 10 AM PST this morning for San
     Bernardino and Riverside County Valleys-The Inland Empire-
     San Diego County Valleys.

     Flood Watch from Friday afternoon through Saturday evening for
     Orange County Coastal Areas-Orange County Inland Areas-
     Riverside County Mountains-San Bernardino County Mountains-
     San Bernardino and Riverside County Valleys-The Inland
     Empire-San Gorgonio Pass Near Banning-Santa Ana Mountains
     and Foothills.

     Winter Storm Warning until 3 PM PST Saturday for Riverside
     County Mountains-San Bernardino County Mountains-San Diego
     County Mountains.

     Winter Storm Warning until 6 AM PST Friday for Santa Ana
     Mountains and Foothills.

     Winter Weather Advisory until 8 AM PST Friday for Apple and
     Lucerne Valleys.

     High Wind Watch from Friday morning through Friday evening for
     Apple and Lucerne Valleys.

PZ...Gale Watch from late tonight through Saturday morning for
     Coastal Waters from San Mateo Point to the Mexican Border
     and out to 30 nm-Waters from San Mateo Point to the Mexican
     Border Extending 30 to 60 nm out including San Clemente
     Island.

&&

PUBLIC...Connolly
AVIATION/MARINE...EA

In the hours before

Local storm report, Feb 23, 9:55 AM PST, 3 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
955 AM PST THU FEB 23 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1052 PM     SNOW             3 ENE BIG BEAR CITY     34.28N 116.79W
02/22/2023  M8.0 INCH        SAN BERNARDINO     CA   TRAINED SPOTTER

            BLOWING AND DRIFTING SNOW WITH DRIFTS 1-2
            FEET OF SNOW MEASURED IN BIG BEAR CITY. 12
            INCHES OF SNOW MEASURED AT SNOW SUMMIT BEAR
            MOUNTAINS. LIGHT SNOW CURRENTLY FALLING. WAS
            HEAVY FOR THE PAST 6 HOURS WITH SNOWFALL
            RATES OF 1-2 INCHES PER HOUR.

&&

AOT
Local storm report, Feb 23, 10:16 AM PST, 3 hours 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1016 AM PST THU FEB 23 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0830 AM     HAIL             1 WSW SEAL BEACH        33.74N 118.10W
02/23/2023  M0.50 INCH       ORANGE             CA   EMERGENCY MNGR

            EMERGENCY MANAGER SHARED VIDEO OF HAIL IN
            SEAL BEACH ON HIGHWAY.

&&

AOT
Local storm report, Feb 23, 10:17 AM PST, 3 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1017 AM PST THU FEB 23 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0957 AM     HAIL             2 E SAN MARCOS          33.14N 117.13W
02/23/2023  E0.25 INCH       SAN DIEGO          CA   TRAINED SPOTTER

            HAIL FROM 9:45-9:48, HEAVY RAIN TO 9:50,
            THEN LIGHT RAIN.

&&

AOT
Special weather statement, Feb 23, 10:28 AM PST, 3 hours 17 minutes before
Special Weather Statement
National Weather Service San Diego CA
1028 AM PST Thu Feb 23 2023

CAZ043-050-552-554-231900-
San Diego County Coastal Areas CA-Orange County Inland CA-
San Diego County Inland Valleys CA-Orange County Coastal CA-
1028 AM PST Thu Feb 23 2023

...A strong thunderstorm will impact portions of northwestern San
Diego and southeastern Orange Counties through 1100 AM PST...

At 1027 AM PST, Doppler radar was tracking a strong thunderstorm over
Dana Point, moving east at 10 mph.

HAZARD...Winds in excess of 30 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Mission Viejo, San Clemente, Laguna Beach, Dana Point, Camp
Pendleton, Laguna Niguel, Aliso Viejo, San Juan Capistrano, San
Onofre, Ortega Highway, Ladera Ranch and Coto De Caza.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3357 11752 3337 11754 3338 11759 3342 11762
      3346 11767 3346 11771 3348 11772 3349 11774
      3354 11778
TIME...MOT...LOC 1827Z 269DEG 10KT 3346 11770

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

Schenk
Special weather statement, Feb 23, 12:42 PM PST, 1 hour 3 minutes before
Special Weather Statement
National Weather Service San Diego CA
1242 PM PST Thu Feb 23 2023

CAZ048-057-554-232115-
San Bernardino and Riverside County Valleys-The Inland Empire CA-
Santa Ana Mountains and Foothills CA-Orange County Inland CA-
1242 PM PST Thu Feb 23 2023

...Strong thunderstorms will impact portions of San Bernardino,
Riverside and northeastern Orange Counties through 115 PM PST...

At 1242 PM PST, Doppler radar was tracking strong thunderstorms along
a line extending from near Ontario to Corona. Movement was east at 25
mph.

HAZARD...Winds in excess of 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Riverside, San Bernardino, Fontana, Ontario, Corona, Rialto, Chino,
Rancho Cucamonga, Colton, Norco, Pedley, Rubidoux, Temescal Valley,
Lake Mathews, Muscoy, Woodcrest, Grand Terrace, Glen Avon, Eastvale
and Sunnyslope.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3417 11727 3373 11745 3380 11769 3412 11755
TIME...MOT...LOC 2042Z 266DEG 20KT 3406 11753 3387 11761

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Schenk
Special weather statement, Feb 23, 1:44 PM PST, 1 minute before
Special Weather Statement
National Weather Service San Diego CA
144 PM PST Thu Feb 23 2023

CAZ048-055-065-232215-
San Gorgonio Pass Near Banning CA-
San Bernardino and Riverside County Valleys-The Inland Empire CA-
San Bernardino County Mountains CA-
144 PM PST Thu Feb 23 2023

...A strong thunderstorm will impact portions of San Bernardino and
Riverside Counties through 215 PM PST...

At 144 PM PST, Doppler radar was tracking a strong thunderstorm near
Moreno Valley, moving east at 25 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Moreno Valley, Redlands, Yucaipa, Forest Falls, Colton, western
Beaumont, Banning, Hwy 38 Between Yucaipa And Onyx Summit, Calimesa,
Cherry Valley and Lake Perris Recreation Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3387 11718 3398 11724 3411 11695 3394 11688
TIME...MOT...LOC 2144Z 247DEG 21KT 3396 11713

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

Schenk

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 23, 2:07 AM PSTGale WatchSGX11 hr
Feb 23, 3:03 AM PSTHigh Wind WatchSGXSan Bernardino11 hr
Feb 23, 3:03 AM PSTWind AdvisorySGXOrange, Riverside, San Bernardino, San Diego51 hr
Feb 23, 10:28 AM PSTSpecial Weather StatementSGXOrange32 min
Feb 23, 10:57 AM PSTBlizzard WarningSGXSan Bernardino53 hr
Feb 23, 12:42 PM PSTSpecial Weather StatementSGXOrange33 min
Feb 23, 1:04 PM PSTGale WarningSGX43 hr
Feb 23, 1:44 PM PSTSpecial Weather StatementSGX31 min

Nearby

High Wind Warnings in California, 2023Every high wind warning in 2023

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.