Alert archive / Washington / Tornado Warnings in 2024

Tornado Warning 1, NWS Portland, OR

November 20, 2024Pacific County, Washington

NWS Portland, OR issued this tornado warning at Nov 20, 2024, 4:09 PM PST for Pacific County, Washington. It was in force for 21 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: Nov 20, 2024, 4:09 PM PST (00:09 UTC)
Expired: Nov 20, 2024, 4:30 PM PST
In force: 21 min
Issued by: NWS Portland, OR
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

County Pacific County, WA

The radar

The Langley Hill radar (KLGX), 68 km from the middle of the area, began a volume at 00:12 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

Quillayute State, WA (KUIL), launched 00:00Z, 0.2 hours before the alert went out and 165 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: 593 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 268 m²/s²
0-3 km storm-relative helicity: 562 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 tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Portland, OR wrote its last area forecast discussion before this tornado warning went out at Nov 20, 2:49 PM PST, 1 hour 20 minutes earlier.

Area forecast discussion, Nov 20, 2:49 PM PST, 1 hour 20 minutes before

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In the hours before

Local storm report, Nov 20, 10:36 AM PST, 5 hours 33 minutes before

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Local storm report, Nov 20, 10:41 AM PST, 5 hours 28 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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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Portland, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 20, 4:47 PM PST	Special Marine Warning	PQR		22 min
Nov 21, 3:09 AM PST	Gale Warning	PQR		25 hr
Nov 21, 3:09 AM PST	Storm Warning	PQR		37 hr
Nov 21, 3:35 AM PST	High Wind Watch	PQR	Clatsop, Lane, Lincoln, Tillamook	10 hr
Nov 21, 3:57 AM PST	Special Marine Warning	PQR		33 min
Nov 21, 1:53 PM PST	High Wind Warning	PQR	Clatsop, Lane, Lincoln, Tillamook	29 hr
Nov 21, 1:53 PM PST	Wind Advisory	PQR	Benton, Clackamas, Linn, Marion, Polk, Yamhill	26 hr

Nearby

Tornado Warnings in Washington, 2024 Every tornado warning in 2024 Tornadoes in 2024

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.