Alert archive / California / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 9, NWS Los Angeles, CA

February 18, 2026Los Angeles County, California

NWS Los Angeles, CA issued this severe thunderstorm warning at Feb 18, 2026, 12:18 AM PST for Los Angeles County, California. It was in force for 87 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 18, 2026, 12:18 AM PST (08:18 UTC)
Expired: Feb 18, 2026, 1:45 AM PST
In force: 87 min
Issued by: NWS Los Angeles, CA
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

County Los Angeles County, CA

The nearest sounding before it

San Diego, CA (KNKX), launched 00:00Z, 8.3 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1041 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 73 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 severe thunderstorm 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 severe thunderstorm warning went out at Feb 17, 10:21 PM PST, 1 hour 57 minutes earlier.

Area forecast discussion, Feb 17, 10:21 PM PST, 1 hour 57 minutes before

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In the hours before

Local storm report, Feb 17, 10:49 PM PST, 1 hour 29 minutes before

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Local storm report, Feb 17, 10:51 PM PST, 1 hour 27 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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Special weather statement, Feb 17, 11:03 PM PST, 1 hour 15 minutes before

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  <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.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Special weather statement, Feb 17, 11:21 PM PST, 57 minutes before

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</head>
<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.
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      <p class="small" id="detail">
        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 18, 12:02 AM PST, 16 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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Local storm report, Feb 18, 12:09 AM PST, 9 minutes before

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<head>
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</head>
<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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 17, 4:36 PM PST	Special Weather Statement	LOX	Santa Barbara	24 min
Feb 17, 4:51 PM PST	Special Weather Statement	LOX	San Luis Obispo	54 min
Feb 17, 5:02 PM PST	Special Weather Statement	LOX	Ventura	13 min
Feb 17, 5:06 PM PST	Special Marine Warning	LOX		84 min
Feb 17, 5:07 PM PST	Special Weather Statement	LOX	San Luis Obispo	38 min
Feb 17, 5:32 PM PST	Special Marine Warning	LOX		58 min
Feb 17, 5:32 PM PST	Special Weather Statement	LOX	San Luis Obispo	58 min
Feb 17, 5:44 PM PST	Special Weather Statement	LOX	San Luis Obispo	46 min
Feb 17, 5:45 PM PST	Areal Flood Advisory	LOX	San Luis Obispo, Santa Barbara	12 hr
Feb 17, 5:48 PM PST	Special Weather Statement	LOX	San Luis Obispo	27 min
Feb 17, 6:07 PM PST	Special Weather Statement	LOX	Ventura	23 min
Feb 17, 6:13 PM PST	Severe Thunderstorm Warning	LOX	San Luis Obispo	92 min
Feb 17, 6:25 PM PST	Special Marine Warning	LOX		95 min
Feb 17, 7:10 PM PST	Severe Thunderstorm Warning	LOX	San Luis Obispo, Santa Barbara	95 min
Feb 17, 7:45 PM PST	Special Weather Statement	LOX	San Luis Obispo	60 min
Feb 17, 8:01 PM PST	Special Marine Warning	LOX		119 min
Feb 17, 8:44 PM PST	Special Weather Statement	LOX	Santa Barbara	76 min
Feb 17, 8:49 PM PST	Areal Flood Advisory	LOX	Los Angeles, Ventura	9 hr
Feb 17, 9:12 PM PST	Special Marine Warning	LOX		48 min
Feb 17, 9:13 PM PST	Special Weather Statement	LOX	Ventura	32 min
Feb 17, 9:19 PM PST	Coastal Flood Advisory	LOX	San Luis Obispo, Santa Barbara, Ventura	15 hr
Feb 17, 9:23 PM PST	Severe Thunderstorm Warning Considerable damage threat	LOX	Santa Barbara	80 min
Feb 17, 9:49 PM PST	Special Marine Warning	LOX		116 min
Feb 17, 10:11 PM PST	Special Weather Statement	LOX	Los Angeles	49 min
Feb 17, 10:15 PM PST	Special Weather Statement	LOX	Santa Barbara	60 min
Feb 17, 10:23 PM PST	Special Weather Statement	LOX	Ventura	52 min
Feb 17, 11:03 PM PST	Special Weather Statement	LOX	Ventura	57 min
Feb 17, 11:21 PM PST	Special Weather Statement	LOX	Los Angeles	54 min
Feb 17, 11:33 PM PST	Special Marine Warning	LOX		117 min
Feb 18, 1:03 AM PST	Special Marine Warning	LOX		117 min
Feb 18, 1:33 AM PST	Areal Flood Advisory	LOX	Los Angeles	4 hr
Feb 18, 1:34 AM PST	Severe Thunderstorm Warning	LOX	Los Angeles	24 min
Feb 18, 1:40 AM PST	Special Weather Statement	LOX	Orange	65 min
Feb 18, 2:01 AM PST	Special Weather Statement	LOX	Los Angeles	44 min
Feb 18, 7:14 AM PST	Small Craft Advisory	LOX		26 hr
Feb 18, 11:55 AM PST	Beach Hazards Statement	LOX	Santa Barbara	47 hr
Feb 18, 1:07 PM PST	Gale Warning	LOX		36 hr
Feb 18, 1:12 PM PST	High Wind Warning	LOX	Los Angeles, San Luis Obispo, Santa Barbara	32 hr
Feb 18, 1:12 PM PST	Wind Advisory	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	32 hr

Nearby

Severe Thunderstorm Warnings in California, 2026 Every severe thunderstorm 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.