Alert archive / California / Flash Flood Warnings in 2026

Flash Flood Warning 5, NWS Los Angeles, CA

February 11, 2026Los Angeles County, California

NWS Los Angeles, CA issued this flash flood warning at Feb 11, 2026, 1:43 AM PST for Los Angeles County, California. It was in force for 92 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 11, 2026, 1:43 AM PST (09:43 UTC)
Expired: Feb 11, 2026, 3:15 AM PST
In force: 92 min
Issued by: NWS Los Angeles, CA
Area: Storm-based polygon
Flood severity: None

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 09:45 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 00:00Z, 9.7 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-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: 837 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 131 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 flash flood 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 flash flood warning went out at Feb 10, 10:20 PM PST, 3 hours 23 minutes earlier.

Area forecast discussion, Feb 10, 10:20 PM PST, 3 hours 23 minutes before

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In the hours before

Local storm report, Feb 11, 12:07 AM PST, 1 hour 36 minutes before

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Special weather statement, Feb 11, 12:18 AM PST, 1 hour 25 minutes before

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Special weather statement, Feb 11, 12:57 AM PST, 46 minutes before

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Local storm report, Feb 11, 12:59 AM PST, 44 minutes before

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Local storm report, Feb 11, 12:59 AM PST, 44 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Feb 11, 1:21 AM PST, 22 minutes before

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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
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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
Feb 10, 6:53 PM PST	Small Craft Advisory	LOX		14 hr
Feb 10, 6:56 PM PST	Areal Flood Advisory	LOX	Santa Barbara	3 hr
Feb 10, 7:03 PM PST	High Wind Warning	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	9 hr
Feb 10, 7:47 PM PST	Areal Flood Advisory	LOX	Santa Barbara	3 hr
Feb 10, 8:33 PM PST	Areal Flood Advisory	LOX	Santa Barbara, Ventura	3 hr
Feb 10, 9:56 PM PST	Areal Flood Advisory	LOX	Los Angeles, Ventura	3 hr
Feb 10, 10:12 PM PST	Areal Flood Advisory	LOX	Los Angeles, Ventura	3 hr
Feb 10, 11:13 PM PST	Areal Flood Advisory	LOX	Los Angeles	6 hr
Feb 11, 12:18 AM PST	Special Weather Statement	LOX	Los Angeles	42 min
Feb 11, 12:57 AM PST	Special Weather Statement	LOX	Los Angeles	48 min
Feb 11, 3:28 AM PST	Flash Flood Warning	LOX	Los Angeles	92 min
Feb 11, 3:59 AM PST	Wind Advisory	LOX	Los Angeles	9 hr

Nearby

Flash Flood Warnings in California, 2026 Every flash flood warning in 2026

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.