Alert archive / Oregon / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 3, NWS Portland, OR

June 3, 2009Lane County, Linn County, Oregon

NWS Portland, OR issued this severe thunderstorm warning at Jun 3, 2009, 5:43 PM PDT for Lane County, Linn County, Oregon. It was in force for 32 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: Jun 3, 2009, 5:43 PM PDT (00:43 UTC)
Expired: Jun 3, 2009, 6:15 PM PDT
In force: 32 min
Issued by: NWS Portland, OR
Area: Storm-based polygon

Counties Lane County, OR, Linn County, OR

The radar

The Portland,OR radar (KRTX), 168 km from the middle of the area, began a volume at 00:46 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

Medford/Jackson, OR (KMFR), launched 00:00Z, 0.7 hours before the alert went out and 205 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: 12 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 2186 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 115 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 Portland, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 3, 2:05 PM PDT, 3 hours 38 minutes earlier.

Area forecast discussion, Jun 3, 2:05 PM PDT, 3 hours 38 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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>

Hazardous weather outlook, Jun 3, 5:47 AM PDT, 11 hours 56 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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>

In the hours before

Special weather statement, Jun 3, 4:45 PM PDT, 58 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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>

Special weather statement, Jun 3, 5:25 PM PDT, 18 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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 Portland, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 3, 5:25 PM PDT	Special Weather Statement	PQR	Lane	50 min
Jun 4, 1:23 PM PDT	Special Weather Statement	PQR	Lane	52 min
Jun 4, 1:32 PM PDT	Severe Thunderstorm Warning	PQR	Lane, Linn	35 min
Jun 4, 1:51 PM PDT	Special Weather Statement	PQR	Benton	39 min
Jun 4, 2:01 PM PDT	Severe Thunderstorm Warning	PQR	Lane, Linn	44 min
Jun 4, 2:31 PM PDT	Special Weather Statement	PQR	Linn	44 min
Jun 4, 2:51 PM PDT	Special Weather Statement	PQR	Linn	39 min
Jun 4, 3:14 PM PDT	Severe Thunderstorm Warning	PQR	Benton, Linn	33 min
Jun 4, 3:21 PM PDT	Severe Thunderstorm Warning	PQR	Clackamas, Linn, Marion	39 min
Jun 4, 3:37 PM PDT	Tornado Warning	PQR	Linn, Marion	23 min
Jun 4, 3:45 PM PDT	Areal Flood Warning	PQR	Benton, Linn	30 min
Jun 4, 4:18 PM PDT	Severe Thunderstorm Warning	PQR	Benton, Clackamas, Lincoln, Marion, Multnomah, Polk and 3 more	42 min
Jun 4, 4:32 PM PDT	Severe Thunderstorm Warning	PQR	Clackamas, Multnomah	28 min
Jun 4, 4:54 PM PDT	Severe Thunderstorm Warning	PQR	Clackamas, Columbia, Marion, Multnomah, Washington, Yamhill	36 min
Jun 4, 4:58 PM PDT	Severe Thunderstorm Warning	PQR	Clackamas, Multnomah, Washington	32 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2009 Every severe thunderstorm warning in 2009

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.