Alert archive / California / Red Flag Warnings in 2025

Red Flag Warning 3, NWS Los Angeles, CA

January 18, 2025Los Angeles County, Santa Barbara County, Ventura County, California

NWS Los Angeles, CA issued this red flag warning at Jan 18, 2025, 2:43 PM PST for Los Angeles County, Santa Barbara County, Ventura County, California. It took effect at Jan 20, 2025, 8:00 AM PST. It was in force for 4 days. 60 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: Jan 18, 2025, 2:43 PM PST (22:43 UTC)
In effect from: Jan 20, 2025, 8:00 AM PST
Expired: Jan 24, 2025, 10:00 AM PST
In force: 4 days
Issued by: NWS Los Angeles, CA

Counties Los Angeles County, CA, Santa Barbara County, CA, Ventura County, CA

The radar

The Los Angeles radar (KVTX), 6 km from the middle of the area, began a volume at 22:42 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
Jan 20, 8:20 AM PST	NON-TSTM WND GST 59	6 Ne Agua Dulce, CA	Mesonet station SE444 Sierra Pelona West (SCE).
Jan 20, 8:40 AM PST	NON-TSTM WND GST 58	7 Ese Acton, CA	Mesonet station 555SE N3 Highway (SCE).
Jan 20, 8:53 AM PST	NON-TSTM WND GST 68	8 Nne Mount Wilson, CA	Mesonet station CHOC1 Chilao RAWS.
Jan 20, 9:00 AM PST	NON-TSTM WND GST 60	7 Ese Acton, CA	Mesonet station 555SE N3 Highway (SCE).
Jan 20, 9:20 AM PST	NON-TSTM WND GST 77	8 S Agua Dulce, CA	Mesonet station SE678 Magic Mtn Truck Trl (SCE).
Jan 20, 9:43 AM PST	NON-TSTM WND GST 59	6 Ne Pyramid Lake, CA	ASOS station KSDB Sandberg.
Jan 20, 9:50 AM PST	NON-TSTM WND GST 60	4 N Chatsworth, CA	Mesonet station SE079 Oat Mountain (SCE).
Jan 20, 9:50 AM PST	NON-TSTM WND GST 88	8 S Agua Dulce, CA	Mesonet station SE678 Magic Mtn Truck Trl (SCE).
Jan 20, 9:53 AM PST	NON-TSTM WND GST 76	8 Nne Mount Wilson, CA	Mesonet station CHOC1 Chilao RAWS.
Jan 20, 9:53 AM PST	NON-TSTM WND GST 76	8 Nne Mount Wilson, CA	Mesonet station CHOC1 Chilao RAWS.
Jan 20, 10:00 AM PST	HIGH SUST WINDS 41	6 E Point Mugu, CA	Mesonet station DW5145 Boney Mountain.
Jan 20, 10:00 AM PST	NON-TSTM WND GST 58	1 Nnw Chatsworth, CA	Mesonet station SE712 Browns Cyn (SCE).
Jan 20, 10:00 AM PST	NON-TSTM WND GST 58	8 Se Acton, CA	Mesonet station 384SE Mill Creek Summit (SCE).
Jan 20, 10:00 AM PST	NON-TSTM WND GST 65	5 Nnw Altadena, CA	Mesonet station 148SE Clear Creek (SCE).
Jan 20, 10:00 AM PST	NON-TSTM WND GST 75	3 Nnw Chatsworth, CA	Mesonet station 470SE Palo Sola Truck Rd (SCE).
Jan 20, 10:00 AM PST	NON-TSTM WND GST 76	7 Ese Acton, CA	Mesonet station 555SE N3 Highway (SCE).
Jan 20, 10:10 AM PST	NON-TSTM WND GST 59	3 S Piru, CA	Mesonet station 803SE Sce Oakridge Oil Field.
Jan 20, 10:20 AM PST	NON-TSTM WND GST 64	4 Se Agua Dulce, CA	Mesonet station 804SE Sce Julians Ridge.
Jan 20, 10:38 AM PST	NON-TSTM WND GST 58	3 Ne Agoura Hills, CA	Mesonet station CEEC1 Cheseboro.
Jan 20, 10:53 AM PST	NON-TSTM WND GST 61	8 Se Acton, CA	Mesonet station MLCC1 Mill Creek RAWS.
Jan 20, 11:00 AM PST	NON-TSTM WND GST 69	3 S Piru, CA	Mesonet station 803SE Sce Oakridge Oil Field.
Jan 20, 11:10 AM PST	NON-TSTM WND GST 65	1 Nnw Chatsworth, CA	Mesonet station SE712 Browns Cyn (SCE).
Jan 20, 11:40 AM PST	NON-TSTM WND GST 59	3 Ese Santa Paula, CA	Mesonet station 040SE S Mountain Lookout Rd (SCE).
Jan 20, 11:51 AM PST	NON-TSTM WND GST 63	6 Ne Pyramid Lake, CA	ASOS station KSDB Sandberg.
Jan 20, 11:51 AM PST	NON-TSTM WND GST 63	6 Ne Pyramid Lake, CA	ASOS station KSDB Sandberg.
Jan 20, 12:20 PM PST	NON-TSTM WND GST 58	4 Se Agua Dulce, CA	Mesonet station 804SE Sce Julians Ridge.
Jan 20, 12:20 PM PST	NON-TSTM WND GST 64	8 S Agua Dulce, CA	Mesonet station SE678 Magic Mtn Truck Trl (SCE).
Jan 20, 12:30 PM PST	NON-TSTM WND GST 58	6 Ne Agua Dulce, CA	Mesonet station SE444 Sierra Pelona West (SCE).
Jan 20, 12:37 PM PST	NON-TSTM WND DMG	3 N Glendale, CA	Business sign toppled by winds on the 4000 block of Pennsylvania Ave in Glendale.
Jan 20, 12:40 PM PST	NON-TSTM WND GST 59	7 Sse Acton, CA	Mesonet station 546SE Mesa Vincent 2.
Jan 20, 1:50 PM PST	NON-TSTM WND GST 62	3 Ene Santa Clarita, CA	Mesonet station SE669 Solemint Motorway (SCE).
Jan 20, 1:51 PM PST	NON-TSTM WND GST 74	6 Ne Pyramid Lake, CA	ASOS station KSDB Sandberg.
Jan 20, 2:00 PM PST	NON-TSTM WND GST 65	6 Ne Agua Dulce, CA	Mesonet station SE444 Sierra Pelona West (SCE).
Jan 20, 2:30 PM PST	NON-TSTM WND GST 64	8 S Agua Dulce, CA	Mesonet station SE678 Magic Mtn Truck Trl (SCE).
Jan 20, 3:50 PM PST	HIGH SUST WINDS 41	6 Ene Acton, CA	Mesonet station 756SE Sce Rough Road.
Jan 20, 4:40 PM PST	NON-TSTM WND GST 61	9 Wnw Falling Springs, CA	Mesonet station 085SE Cumorah Crest Camp Rd (SCE).
Jan 20, 5:30 PM PST	NON-TSTM WND GST 66	4 Nw Altadena, CA	Mesonet station 149SE Mt Lukens Truck Trail (SCE).
Jan 20, 5:57 PM PST	NON-TSTM WND GST 60	4 S Diamond Bar, CA	Mesonet station TNRC1 Tonner Canyon RAWS.
Jan 20, 8:00 PM PST	HIGH SUST WINDS 42	6 Ne Agua Dulce, CA	Mesonet station SE444 Sierra Pelona West (SCE).
Jan 20, 9:27 PM PST	HIGH SUST WINDS 40	7 Ssw Woodland Hills, CA	Mesonet station DW2363 Saddle Peak.
Jan 20, 11:10 PM PST	NON-TSTM WND GST 62	4 Nne Chatsworth, CA	Mesonet station 777SE Limekiln Ridge (SCE).
Jan 21, 12:53 AM PST	NON-TSTM WND GST 61	8 Nne Mount Wilson, CA	Mesonet station CHOC1 Chilao RAWS.
Jan 21, 2:10 AM PST	NON-TSTM WND GST 61	4 Nw Altadena, CA	Mesonet station 149SE Mt Lukens Truck Trail (SCE).
Jan 21, 2:40 AM PST	NON-TSTM WND GST 63	8 S Agua Dulce, CA	Mesonet station SE678 Magic Mtn Truck Trl (SCE).
Jan 21, 6:10 AM PST	NON-TSTM WND GST 63	3 S Piru, CA	Mesonet station 803SE Sce Oakridge Oil Field.
Jan 22, 5:00 AM PST	NON-TSTM WND GST 59	1 Nnw Chatsworth, CA	Mesonet station SE712 Browns Cyn (SCE).
Jan 22, 5:50 AM PST	HIGH SUST WINDS 42	3 Nnw Chatsworth, CA	Mesonet station 470SE Palo Sola Truck Rd (SCE).
Jan 22, 11:10 AM PST	NON-TSTM WND GST 63	7 Ese Acton, CA	Mesonet station 555SE N3 Highway (SCE).
Jan 22, 12:40 PM PST	NON-TSTM WND GST 64	1 Nnw Chatsworth, CA	Mesonet station SE712 Browns Cyn (SCE).
Jan 22, 2:30 PM PST	NON-TSTM WND GST 58	3 Nnw Chatsworth, CA	Mesonet station 470SE Palo Sola Truck Rd (SCE).
Jan 22, 7:30 PM PST	HIGH SUST WINDS 42	6 E Point Mugu, CA	Mesonet station DW5145 Boney Mountain.
Jan 22, 8:00 PM PST	NON-TSTM WND GST 67	8 S Agua Dulce, CA	Mesonet station SE678 Magic Mtn Truck Trl (SCE).
Jan 22, 8:53 PM PST	HIGH SUST WINDS 40	8 Nne Mount Wilson, CA	Mesonet station CHOC1 Chilao RAWS.
Jan 23, 12:30 AM PST	NON-TSTM WND GST 59	4 N Moorpark, CA	Mesonet station 794SE Sce Moorpark Quarry.
Jan 23, 1:53 AM PST	NON-TSTM WND GST 61	8 Nne Mount Wilson, CA	Mesonet station CHOC1 Chilao RAWS.
Jan 23, 2:15 AM PST	NON-TSTM WND GST 63	6 E Point Mugu, CA	Mesonet station DW5145 Boney Mountain.
Jan 23, 2:40 AM PST	NON-TSTM WND GST 71	8 S Agua Dulce, CA	Mesonet station SE678 Magic Mtn Truck Trl (SCE).
Jan 23, 4:00 AM PST	NON-TSTM WND GST 58	4 Nne Chatsworth, CA	Mesonet station 777SE Limekiln Ridge (SCE).
Jan 23, 5:09 AM PST	NON-TSTM WND GST 59	5 Ne Point Mugu, CA	Mesonet station MLXC1 Miller Ranch.
Jan 23, 6:20 AM PST	HIGH SUST WINDS 40	4 Se Agua Dulce, CA	Mesonet station 804SE Sce Julians Ridge.

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 12:00Z, 10.7 hours before the alert went out and 250 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: 768 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag warning 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 red flag warning went out at Jan 18, 2:38 PM PST, 5 minutes earlier.

Area forecast discussion, Jan 18, 2:38 PM PST, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 17, 8:26 PM PST	Small Craft Advisory	LOX		7 hr
Jan 18, 12:06 PM PST	High Wind Watch	LOX	Los Angeles, Ventura	23 hr
Jan 18, 1:10 PM PST	Gale Watch	LOX		24 hr
Jan 18, 1:10 PM PST	Small Craft Advisory	LOX		43 hr
Jan 18, 2:43 PM PST	Fire Weather Watch	LOX	Los Angeles, Ventura	72 hr

Nearby

Red Flag Warnings in California, 2025 Every red flag warning in 2025

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.