Alert archive / California / Wind Advisories in 2019

Wind Advisory 90, NWS Los Angeles, CA

December 25, 2019Los Angeles County, California

NWS Los Angeles, CA issued this wind advisory at Dec 25, 2019, 4:00 AM PST for Los Angeles County, California. It took effect at Dec 25, 2019, 3:00 PM PST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Dec 25, 2019, 4:00 AM PST (12:00 UTC)
In effect from
Dec 25, 2019, 3:00 PM PST
Expired
Dec 26, 2019, 8:03 AM PST
In force
17 hr
Issued by
NWS Los Angeles, CA

County Los Angeles County, CA

The radar

The Santa Ana Mts radar (KSOX), 71 km from the middle of the area, began a volume at 12:00 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

San Diego, CA (KNKX), launched 12:00Z, 0.0 hours before the alert went out and 184 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, San Diego, CA at 12:00Z on 2019-12-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 61 joules per kilogram.LCLLFCEL10008507005003002001001 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, San Diego, CA at 12:00Z on 2019-12-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
61 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

047 
WWUS76 KLOX 251200
NPWLOX

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
400 AM PST Wed Dec 25 2019

CAZ034>036-252345-
/O.NEW.KLOX.WI.Y.0090.191225T2300Z-191226T0900Z/
San Luis Obispo County Central Coast-
Santa Barbara County Central Coast-Santa Ynez Valley-
Including the cities of San Luis Obispo, Pismo Beach, Morro Bay, 
Cambria, San Simeon, Santa Maria, Lompoc, Vandenberg, Solvang, 
and Santa Ynez
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 1 AM PST
THURSDAY...

* WHAT...East to southeast winds 15 to 30 mph with gusts to 40 
  mph.

* WHERE...San Luis Obispo County Central Coast, Santa Barbara 
  County Central Coast and Santa Ynez Valley.

* WHEN...From 3 PM this afternoon to 1 AM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ037-252345-
/O.NEW.KLOX.WI.Y.0090.191225T2300Z-191226T0900Z/
San Luis Obispo County Interior Valleys-
Including the cities of Paso Robles and Atascadero
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 1 AM PST
THURSDAY...

* WHAT...Southeast winds 15 to 25 mph with gusts to 40 mph.

* WHERE...San Luis Obispo County Interior Valleys.

* WHEN...From 3 PM this afternoon to 1 AM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ051-252345-
/O.NEW.KLOX.WI.Y.0090.191225T2300Z-191226T0900Z/
San Luis Obispo County Mountains-
Including the city of Black Mountain
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 1 AM PST
THURSDAY...

* WHAT...Southeast winds 20 to 30 mph with gusts to 50 mph.

* WHERE...San Luis Obispo County Mountains.

* WHEN...From 3 PM this afternoon to 1 AM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for high profile vehicles.
  Tree limbs could be blown down and a few power outages may
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ039-252345-
/O.NEW.KLOX.WI.Y.0090.191225T2300Z-191227T0600Z/
Santa Barbara County South Coast-
Including the cities of Santa Barbara, Montecito, and Carpinteria
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 10 PM PST
THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 
  mph.

* WHERE...Santa Barbara County South Coast.

* WHEN...From 3 PM this afternoon to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ040-252345-
/O.NEW.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Ventura County Coast-
Including the cities of Ventura, Oxnard, and Camarillo
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST
THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 mph.

* WHERE...Ventura County Coast.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ044-045-088-547-548-252345-
/O.NEW.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Clarita Valley-Los Angeles County San Fernando Valley-
Los Angeles County San Gabriel Valley-
Including the cities of Santa Paula, Fillmore, Ojai, Piru, 
Thousand Oaks, Simi Valley, Moorpark, Newbury Park, 
Santa Clarita, Newhall, Valencia, Woodland Hills, Northridge, 
Burbank, Universal City, Pasadena, San Gabriel, and Pomona
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST
THURSDAY...

* WHAT...East to southeast winds 15 to 30 mph with gusts of 40 to
  50 mph.

* WHERE...Ventura County Valleys, Santa Clarita Valley, San
  Fernando Valley, and San Gabriel Valley.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ046-252345-
/O.NEW.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Santa Monica Mountains Recreational Area-
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST
THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 mph.

* WHERE...Santa Monica Mountains Recreational Area.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ041-252345-
/O.NEW.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Los Angeles County Coast including Downtown Los Angeles-
Including the cities of Malibu, Santa Monica, Beverly Hills, 
Hollywood, and Long Beach
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST
THURSDAY...

* WHAT...East to southeast winds 15 to 25 mph with gusts to 40 mph.

* WHERE...Los Angeles County Coast including Downtown Los Angeles.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ087-252345-
/O.NEW.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Catalina and Santa Barbara Islands-
Including the city of Avalon
400 AM PST Wed Dec 25 2019

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST
THURSDAY...

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

* WHERE...Catalina and Santa Barbara Islands.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Secure outdoor objects such as lawn furniture.

&&

$$

DB/ASR
3 follow-up statements
527 
WWUS76 KLOX 252259
NPWLOX

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
259 PM PST Wed Dec 25 2019

CAZ034>036-260700-
/O.CON.KLOX.WI.Y.0090.191225T2300Z-191226T0900Z/
San Luis Obispo County Central Coast-
Santa Barbara County Central Coast-Santa Ynez Valley-
Including the cities of San Luis Obispo, Pismo Beach, Morro Bay, 
Cambria, San Simeon, Santa Maria, Lompoc, Vandenberg, Solvang, 
and Santa Ynez
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM PST THURSDAY...

* WHAT...East to southeast winds 15 to 30 mph with gusts to 40 
  mph.

* WHERE...San Luis Obispo County Central Coast, Santa Barbara 
  County Central Coast and Santa Ynez Valley.

* WHEN...Until 1 AM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ037-260700-
/O.CON.KLOX.WI.Y.0090.191225T2300Z-191226T0900Z/
San Luis Obispo County Interior Valleys-
Including the cities of Paso Robles and Atascadero
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM PST THURSDAY...

* WHAT...Southeast winds 15 to 25 mph with gusts to 40 mph.

* WHERE...San Luis Obispo County Interior Valleys.

* WHEN...Until 1 AM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ051-260700-
/O.CON.KLOX.WI.Y.0090.191225T2300Z-191226T0900Z/
San Luis Obispo County Mountains-
Including the city of Black Mountain
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM PST THURSDAY...

* WHAT...Southeast winds 20 to 30 mph with gusts to 50 mph.

* WHERE...San Luis Obispo County Mountains.

* WHEN...Until 1 AM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for high profile vehicles. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ039-260700-
/O.CON.KLOX.WI.Y.0090.191225T2300Z-191227T0600Z/
Santa Barbara County South Coast-
Including the cities of Santa Barbara, Montecito, and Carpinteria
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 
  mph.

* WHERE...Santa Barbara County South Coast.

* WHEN...Until 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ040-260700-
/O.CON.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Ventura County Coast-
Including the cities of Ventura, Oxnard, and Camarillo
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 PM PST THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 
  mph.

* WHERE...Ventura County Coast.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ044-045-088-547-548-260700-
/O.CON.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Clarita Valley-Los Angeles County San Fernando Valley-
Los Angeles County San Gabriel Valley-
Including the cities of Santa Paula, Fillmore, Ojai, Piru, 
Thousand Oaks, Simi Valley, Moorpark, Newbury Park, 
Santa Clarita, Newhall, Valencia, Woodland Hills, Northridge, 
Burbank, Universal City, Pasadena, San Gabriel, and Pomona
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 PM PST THURSDAY...

* WHAT...East to southeast winds 15 to 30 mph with gusts of 40 
  to 50 mph.

* WHERE...Ventura County Valleys, Santa Clarita Valley, San 
  Fernando Valley, and San Gabriel Valley.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ046-260700-
/O.CON.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Santa Monica Mountains Recreational Area-
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 PM PST THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 
  mph.

* WHERE...Santa Monica Mountains Recreational Area.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ041-260700-
/O.CON.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Los Angeles County Coast including Downtown Los Angeles-
Including the cities of Malibu, Santa Monica, Beverly Hills, 
Hollywood, and Long Beach
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 PM PST THURSDAY...

* WHAT...East to southeast winds 15 to 25 mph with gusts to 40 
  mph.

* WHERE...Los Angeles County Coast including Downtown Los 
  Angeles.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ087-260700-
/O.CON.KLOX.WI.Y.0090.191226T0600Z-191227T0600Z/
Catalina and Santa Barbara Islands-
Including the city of Avalon
259 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
10 PM PST THURSDAY...

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

* WHERE...Catalina and Santa Barbara Islands.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Secure outdoor objects such as lawn furniture.

&&

$$

DB
189 
WWUS76 KLOX 260724
NPWLOX

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
1124 PM PST Wed Dec 25 2019

CAZ034>037-051-260830-
/O.CAN.KLOX.WI.Y.0090.000000T0000Z-191226T0900Z/
San Luis Obispo County Central Coast-
Santa Barbara County Central Coast-Santa Ynez Valley-
San Luis Obispo County Interior Valleys-
San Luis Obispo County Mountains-
Including the cities of San Luis Obispo, Pismo Beach, Morro Bay, 
Cambria, San Simeon, Santa Maria, Lompoc, Vandenberg, Solvang, 
Santa Ynez, Paso Robles, Atascadero, and Black Mountain
1124 PM PST Wed Dec 25 2019

...WIND ADVISORY IS CANCELLED...

Winds have lowered to below advisory thresholds. Therefore, the
wind advisories north of Point Conception have been cancelled.

$$

CAZ039-260830-
/O.CAN.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
Santa Barbara County South Coast-
Including the cities of Santa Barbara, Montecito, and Carpinteria
1124 PM PST Wed Dec 25 2019

...WIND ADVISORY IS CANCELLED...

The gusty southeasterly winds that occurred earlier this evening,
have lowered to below wind advisory thresholds, therefore the wind
advisory has been cancelled.

$$

CAZ040-261530-
/O.CON.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
Ventura County Coast-
Including the cities of Ventura, Oxnard, and Camarillo
1124 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 
  mph.

* WHERE...Ventura County Coast.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and
  make driving difficult, especially for drivers of high profile
  vehicles. Tree limbs could be blown down and a few power outages
  may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ044-045-088-547-548-261530-
/O.CON.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Clarita Valley-Los Angeles County San Fernando Valley-
Los Angeles County San Gabriel Valley-
Including the cities of Santa Paula, Fillmore, Ojai, Piru, 
Thousand Oaks, Simi Valley, Moorpark, Newbury Park, 
Santa Clarita, Newhall, Valencia, Woodland Hills, Northridge, 
Burbank, Universal City, Pasadena, San Gabriel, and Pomona
1124 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THURSDAY...

* WHAT...East to southeast winds 15 to 30 mph with gusts of 40 
  to 50 mph.

* WHERE...Ventura County Valleys, Santa Clarita Valley, San 
  Fernando Valley, and San Gabriel Valley.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ046-261530-
/O.CON.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
Santa Monica Mountains Recreational Area-
1124 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THURSDAY...

* WHAT...East to southeast winds 20 to 30 mph with gusts to 50 
  mph.

* WHERE...Santa Monica Mountains Recreational Area.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ041-261530-
/O.CON.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
Los Angeles County Coast including Downtown Los Angeles-
Including the cities of Malibu, Santa Monica, Beverly Hills, 
Hollywood, and Long Beach
1124 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THURSDAY...

* WHAT...East to southeast winds 15 to 25 mph with gusts to 40 
  mph.

* WHERE...Los Angeles County Coast including Downtown Los 
  Angeles.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for drivers of high profile 
  vehicles. Tree limbs could be blown down and a few power 
  outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ087-261530-
/O.CON.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
Catalina and Santa Barbara Islands-
Including the city of Avalon
1124 PM PST Wed Dec 25 2019

...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THURSDAY...

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

* WHERE...Catalina and Santa Barbara Islands.

* WHEN...From 10 PM this evening to 10 PM PST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Secure outdoor objects such as lawn furniture.

&&

$$

Kaplan
643 
WWUS76 KLOX 261603
NPWLOX

URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
803 AM PST Thu Dec 26 2019

CAZ040-270200-
/O.CAN.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
/O.NEW.KLOX.WI.Y.0091.191227T0200Z-191227T1400Z/
Ventura County Coast-
Including the cities of Ventura, Oxnard, and Camarillo
803 AM PST Thu Dec 26 2019

...WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM PST
FRIDAY...

* WHAT...North winds 10 to 20 mph with gusts up to 35 mph 
  expected.

* WHERE...Ventura County Coast.

* WHEN...From 6 PM this evening to 6 AM PST Friday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for high profile vehicles. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ044-045-088-547-548-270200-
/O.CAN.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
/O.NEW.KLOX.WI.Y.0091.191227T0200Z-191227T1800Z/
Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Clarita Valley-Los Angeles County San Fernando Valley-
Los Angeles County San Gabriel Valley-
Including the cities of Santa Paula, Fillmore, Ojai, Piru, 
Thousand Oaks, Simi Valley, Moorpark, Newbury Park, 
Santa Clarita, Newhall, Valencia, Woodland Hills, Northridge, 
Burbank, Universal City, Pasadena, San Gabriel, and Pomona
803 AM PST Thu Dec 26 2019

...WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 10 AM PST
FRIDAY...

* WHAT...North winds 15 to 25 mph with gusts up to 50 mph 
  expected.

* WHERE...Ventura County Interior Valleys, Ventura County 
  Coastal Valleys, Santa Clarita Valley, Los Angeles County San 
  Fernando Valley and Los Angeles County San Gabriel Valley.

* WHEN...From 6 PM this evening to 10 AM PST Friday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for high profile vehicles. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ046-270200-
/O.CAN.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
/O.NEW.KLOX.WI.Y.0091.191227T0600Z-191227T1800Z/
Santa Monica Mountains Recreational Area-
803 AM PST Thu Dec 26 2019

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST
FRIDAY...

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

* WHERE...Santa Monica Mountains Recreational Area.

* WHEN...From 10 PM this evening to 10 AM PST Friday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for high profile vehicles. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ041-270200-
/O.CAN.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
/O.NEW.KLOX.WI.Y.0091.191227T0200Z-191227T1800Z/
Los Angeles County Coast including Downtown Los Angeles-
Including the cities of Malibu, Santa Monica, Beverly Hills, 
Hollywood, and Long Beach
803 AM PST Thu Dec 26 2019

...WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 10 AM PST
FRIDAY...

* WHAT...North winds 10 to 20 mph with gusts up to 40 mph
  expected, strongest below passes and canyons from Malibu to the
  Hollywood Hills.

* WHERE...Los Angeles County Coast including Downtown Los 
  Angeles.

* WHEN...From 6 PM this evening to 10 AM PST Friday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  make driving difficult, especially for high profile vehicles. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ087-261715-
/O.CAN.KLOX.WI.Y.0090.000000T0000Z-191227T0600Z/
Catalina and Santa Barbara Islands-
Including the city of Avalon
803 AM PST Thu Dec 26 2019

...WIND ADVISORY IS CANCELLED...

Winds are now expected to remain below advisory levels. As a
result, the Wind Advisory has been cancelled.

$$

Sirard

What forecasters said that day

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

NWS Los Angeles, CA wrote its last area forecast discussion before this wind advisory went out at Dec 25, 3:49 AM PST, 11 minutes earlier.

Area forecast discussion, Dec 25, 3:49 AM PST, 11 minutes before
Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
349 AM PST Wed Dec 25 2019

.SYNOPSIS...24/904 PM.

Precipitation will develop along the Central Coast by early
afternoon. The heaviest rain and snow will fall late Wednesday
night into early Thursday with gusty easterly winds. Conditions
will clear on Friday and temperatures will be near normal by the
weekend.

&&

.SHORT TERM (TDY-FRI)...25/348 AM.

Significant and tricky storm system on track to affect the area
later today and esp overnight into Thursday morning.

A 538 MB upper low is off of the northern CA coast. A weak front
is poised to move into the Central Coast. This front will bring
rain to the Central Coast but will likely dissipate as it moves
further inland. The upper low will continue to spin down the coast
and it will strengthen as it goes. There will be scattered light
showers across the entire area today but nothing of significance.
Another cold day with most highs across the coasts and vlys
barely escaping the 50s.

Then tonight its game on. The 539 DM upper low will move south and
will be off of Pt Conception by 400 Thursday. What makes this a
different kind of storm is that there will be sfc low nearly under
the upper low (Most storms almost always have the sfc low north
of SLO county) A strong front will bring a decent period of
moderate to heavy rain first to the Central Coast in the early
evening then to the SBA south coast by mid evening...VTA coast in
the late evening and finally LA county after midnight. The heavy
rain will diminish and turn to showers Thursday morning.

Strong orthogonal flow across the east-west mountains will combine
with the synoptic scale forcing and will generate periods of very
heavy rain south of Pt Conception during this evening and
overnight.

There is a slight chc of TSTMs under the upper low, but since the
upper remains over the water there are no TSTMs in the overland
forecasts just the waters.

Rain rates will peak at around .75 inches per hour which may
cause some minor debris flows near the recent burn areas. But
unless a thunderstorm forms the rainfall rates should stay under
the 1 inch per hour rates needed for major burn area flooding.
Rain totals should mostly range from 1-2" csts/vlys to 2-4"
mountains.

Snow and very low snow levels will add an additional layer of
hazardous weather to this event. Winter Storm Warnings will go
into effect later this afternoon and evening for the SBA/VTA/LA
mtns where snow levels will dip to near 3000 ft. 1 to 2 ft of snow
will likely fall above 5000 feet and up to 6 to 12 inches of snow
will likely fall between 3000 and 5000 feet (this includes the
Grapevine)

The Antelope Valley could see significant snow on Thursday. As
strong northeast wrap around flow will develop in response to the
low moving into the Bite. The NE winds will create upslope flow
across the foothills. The snow level will be low enough to even
bring snow to the valley floor. It is possible that more than a
few areas will see 4 to 8 inches of snow Thursday. Still some
doubt about the exact and crucial track of the low so will leave
the watch intact for one more model run. The Cuyama vly will see
enough snow (mainly in the foothills to warrant a winter weather
advisory.

The strong flow around nearby sfc low will create much stronger
than normal storm winds and wind advisories are in effect for
almost areas that are not covered by winter storm warnings (which
include strong winds in addition to the heavy snow.)

The low will move out of the area later Thursday. The rain will
diminish and the skies will begin to clear. Max temps will be well
below normal and will not escape the 50s.

Weak ridging and offshore flow will bring clearing skies and dry
conditions to the area Friday (and will allow for some postcard
perfect pictures of the snow covered mountains) Max temps will
climb into the lower 60s.

.LONG TERM (SAT-TUE)...25/218 AM.

Nice weather on tap for the weekend as the state is under the
eastern portion of a ridge. Saturday will be the best day as the
ridge will break down later Sunday as a trof runs down the coast
and brings an increase in clouds. Saturday will start off quite
cold with more than a few valley locations reaching freezing or a
couple of degrees lower. Despite the increased sunshine max temps
will not change much day to day and will be 5 to 10 degrees blo
normal with most cst/vly locations reaching 60 or so degrees.

The operational GFS and some but not all of its ensemble members
bring a little rain to the area and then quite a bit of rain to
the area Monday. The EC and almost all of its ensemble members
are dry save for some mtn showers Monday afternoon. The GFS soln
is new and the EC soln has been more consistent so will mostly
favor the EC but will introduce some slight chc pops - mostly
across SLO/SBA county and the mtns. It will be mostly cloudy and
cool with max temps coming in a degree or two either side of 60
for the coasts and vlys.

Huge differences in EC and GFS solutions for Tuesday and New
Year's day. Ensemble members stick fairly close to their
deterministic solutions so there is not a great deal of
confidence. The GFS solution has a humongous fairly other worldly
upper low wobbling about Srn Ca while the EC has a more serene
east pac ridge. Forecast favors the drier clearer EC which just
looks more normal in addition to the fact that the EC has been
verifying better of late.

&&

.AVIATION...25/0128Z.

At 0045Z at KLAX, There was no marine layer nor any inversion.

Good confidence in TAFs through 14Z. Then less confidence due to
timing of the onset of rain and lower cigs associated with the
rain. Light showers with VFR cigs are possible at every site but
KPMD AND KWJF aft 14Z with increasing chcs of shower activity and
MVFR cigs aft 20Z.

KLAX...Good confidence in TAF through 14Z. Then less confidence
due to timing of the onset of rain and lower cigs associated with
the rain. Light showers with VFR cigs are possible aft 14Z with
increasing chcs of shower activity and MVFR cigs aft 20Z. Good
confidence in no east wind component through 02Z there is a good
likelyhood of 8 kt or more of an east wind component after 06Z on
the 26th.

KBUR...Good confidence in TAF through 14Z. Then less confidence
due to timing of the onset of rain and lower cigs associated with
the rain. Light showers with VFR cigs are possible aft 14Z with
increasing chcs of shower activity and MVFR cigs aft 20Z.

&&

.MARINE...24/156 PM.

For the Outer Waters, moderate confidence in the current
forecast. Hi confidence in Small Craft Advisory (SCA) level winds
across the southern zone (PZZ676) through this evening. Otherwise,
winds and seas should remain below SCA levels tonight and
Wednesday. For Wednesday night, moderate confidence in strong SCA
level southeast winds with hazardous seas, and north to northeast
winds to SCA levels Thursday into Thursday evening. SCA level seas
can be expected into Friday, then high confidence in winds and
seas dropping below SCA levels for Friday night and Saturday.
There is then a 50% chance of SCA level winds for Sunday.

For the Inner Waters north of Point Sal, moderate to high
confidence in the current forecast. Through Wednesday, high
confidence in winds and seas remaining below SCA levels. For
Wednesday night through Thursday morning, moderate confidence in
SCA level southeast to northeast winds and hazardous seas. SCA
seas should linger Thursday night then winds and seas should
remain below SCA levels Friday through Saturday. There is then a
50% chance of SCA level winds for Sunday.

For the Inner Waters south of Point Conception, moderate
confidence in the current forecast. There is a 30% chance of SCA
level northwest winds through this evening, otherwise winds and
seas are expected to remain below SCA levels through Wednesday.
For Wednesday night, moderate confidence in SCA level southeast
winds, then turning east to northeast Thursday and Thursday night.
Northeast wind will continue Friday with a 30% chance of SCA
level gusts Friday morning. For Friday afternoon through Sunday,
generally high confidence in winds and seas remaining below SCA
levels, except for a 50% chance of SCA level wind gusts on Sunday
in the east Santa Barbara Channel.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory in effect from 3 PM this afternoon to 1 AM PST
      Thursday for zones 34>37-51. (See LAXNPWLOX).
     High Surf Advisory in effect from 6 AM Thursday to 10 PM PST
      Friday for zones 34-35. (See LAXCFWLOX).
     Winter Weather Advisory in effect from 7 PM this evening to 9
      AM PST Thursday for zone 38. (See LAXWSWLOX).
     Wind Advisory in effect from 3 PM this afternoon to 10 PM PST
      Thursday for zone 39. (See LAXNPWLOX).
     Wind Advisory in effect from 10 PM this evening to 10 PM PST
      Thursday for zones 40-41-44>46-87-88-547. (See LAXNPWLOX).
     Winter Storm Warning in effect from 3 PM this afternoon to 9
      AM PST Thursday for zone 52. (See LAXWSWLOX).
     Winter Storm Warning in effect from 3 PM this afternoon to 6
      PM PST Thursday for zone 53. (See LAXWSWLOX).
     Winter Storm Warning in effect from 7 PM this evening to 10
      PM PST Thursday for zone 54. (See LAXWSWLOX).
     Winter Storm Watch in effect from late tonight through
      Thursday evening for zone 59. (See LAXWSWLOX).
PZ...Small Craft Advisory in effect from 3 PM this afternoon to 9
      PM PST Thursday for zone 645. (See LAXMWWLOX).
     Small Craft Advisory in effect from 3 PM this afternoon to 7
      AM PST Thursday for zone 650. (See LAXMWWLOX).
     Gale Warning in effect from 7 AM Thursday to 3 AM PST Friday
      for zone 650. (See LAXMWWLOX).
     Small Craft Advisory in effect from 3 PM this afternoon to 3
      AM PST Thursday for zone 655. (See LAXMWWLOX).
     Gale Warning in effect from 3 AM to 9 PM PST Thursday for
      zone 655. (See LAXMWWLOX).
     Small Craft Advisory in effect from 3 PM this afternoon to 3
      AM PST Friday for zones 670-673-676. (See LAXMWWLOX).

&&

.HAZARD POTENTIAL OUTLOOK (FRI-TUE).

High surf possible Friday, mainly along the Central Coast.

&&

PUBLIC...Rorke
AVIATION...Rorke
MARINE...Sirard
SYNOPSIS...Kj

weather.gov/losangeles

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 25, 2:34 AM PSTWinter Storm WarningLOX43 hr
Dec 25, 2:54 AM PSTGale WarningLOX30 hr
Dec 25, 2:54 AM PSTSmall Craft AdvisoryLOX4 days
Dec 25, 3:24 AM PSTHigh Surf AdvisoryLOX3 days
Dec 25, 2:02 PM PSTGale WarningLOX19 hr

Nearby

Wind Advisories in California, 2019Every wind advisory 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.