Alert archive / Oregon / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 2, NWS Portland, OR

September 18, 2020Linn County, Marion County, Oregon

NWS Portland, OR issued this severe thunderstorm warning at Sep 18, 2020, 1:33 AM PDT for Linn County, Marion County, Oregon. It was in force for 27 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: Sep 18, 2020, 1:33 AM PDT (08:33 UTC)
Expired: Sep 18, 2020, 2:00 AM PDT
In force: 27 min
Issued by: NWS Portland, OR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Linn County, OR, Marion County, OR

The radar

The Portland,OR radar (KRTX), 118 km from the middle of the area, began a volume at 08:35 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 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 Sep 17, 9:06 PM PDT, 4 hours 27 minutes earlier.

Area forecast discussion, Sep 17, 9:06 PM PDT, 4 hours 27 minutes before

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In the hours before

Special weather statement, Sep 17, 7:43 PM PDT, 5 hours 50 minutes before

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Special weather statement, Sep 17, 7:53 PM PDT, 5 hours 40 minutes before

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Special weather statement, Sep 17, 8:52 PM PDT, 4 hours 41 minutes before

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Special weather statement, Sep 17, 9:16 PM PDT, 4 hours 17 minutes before

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        Please try again in a few minutes.
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Special weather statement, Sep 18, 12:57 AM PDT, 36 minutes before

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      <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, Sep 18, 1:22 AM PDT, 11 minutes before

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<body>
  <main class="wrap">
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      <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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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 17, 6:11 PM PDT	Special Weather Statement	PQR	Benton	49 min
Sep 17, 6:14 PM PDT	Special Weather Statement	PQR	Marion	16 min
Sep 17, 6:25 PM PDT	Special Weather Statement	PQR	Lane	20 min
Sep 17, 6:51 PM PDT	Special Weather Statement	PQR	Tillamook	9 min
Sep 17, 7:43 PM PDT	Special Weather Statement	PQR	Yamhill	47 min
Sep 17, 7:53 PM PDT	Special Weather Statement	PQR	Polk	37 min
Sep 17, 8:52 PM PDT	Special Weather Statement	PQR	Yamhill	23 min
Sep 17, 9:16 PM PDT	Special Weather Statement	PQR	Polk	29 min
Sep 17, 11:28 PM PDT	Severe Thunderstorm Warning	PQR	Lane	19 min
Sep 18, 12:57 AM PDT	Special Weather Statement	PQR	Polk	33 min
Sep 18, 1:22 AM PDT	Special Weather Statement	PQR	Linn	23 min
Sep 18, 1:55 AM PDT	Severe Thunderstorm Warning	PQR	Linn, Marion	35 min
Sep 18, 2:46 AM PDT	Areal Flood Advisory	PQR	Clackamas, Marion, Polk, Yamhill	3 hr
Sep 18, 3:03 AM PDT	Special Weather Statement	PQR	Multnomah	42 min
Sep 18, 3:35 AM PDT	Areal Flood Warning	PQR	Clackamas, Multnomah	3 hr
Sep 18, 4:31 AM PDT	Areal Flood Advisory	PQR	Linn, Marion	119 min
Sep 18, 5:20 AM PDT	Areal Flood Advisory	PQR	Clackamas	103 min
Sep 18, 2:25 PM PDT	Special Weather Statement	PQR	Washington	65 min
Sep 18, 4:00 AM PDT	Areal Flood Warning	PQR	Clark	3 hr

Nearby

Severe Thunderstorm Warnings in Oregon, 2020 Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.