Alert archive / Oregon / River Flood Warnings in 2015

River Flood Warning 49, NWS Portland, OR

December 18, 2015Clackamas County, Oregon

NWS Portland, OR issued this river flood warning at Dec 18, 2015, 8:14 AM PST for Clackamas County, Oregon. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Dec 18, 2015, 8:14 AM PST (16:14 UTC)
Expired: Dec 18, 2015, 10:35 PM PST
In force: 14 hr
Issued by: NWS Portland, OR
Area: Storm-based polygon
Flood severity: Minor

County Clackamas County, OR

The radar

The Portland,OR radar (KRTX), 82 km from the middle of the area, began a volume at 16:18 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 river

Written for the forecast point Clackamas River near Estacada (ESTO3). The gauge peaked at 20.86 ft at Dec 18, 2015, 10:00 AM PST.

Action stage: 18 ft
Minor stage: 20 ft
Moderate stage: 23 ft
Major stage: 25 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 14210000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Dec 18, 2:25 AM PST, 5 hours 49 minutes earlier.

Area forecast discussion, Dec 18, 2:25 AM PST, 5 hours 49 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
Dec 17, 7:46 PM PST	River Flood Warning	PQR	Linn, Marion	23 hr
Dec 17, 7:46 PM PST	River Flood Warning	PQR	Lincoln	23 hr
Dec 17, 9:28 PM PST	Areal Flood Advisory	PQR	Benton, Clackamas, Lane, Linn, Marion, Multnomah and 3 more	8 hr
Dec 17, 9:57 PM PST	River Flood Warning	PQR	Clackamas, Multnomah	11 hr
Dec 17, 11:26 PM PST	River Flood Warning	PQR	Lane	25 hr
Dec 18, 12:26 AM PST	River Flood Warning	PQR	Washington	5 days
Dec 18, 12:43 AM PST	Small Craft Advisory for Winds	PQR		11 hr
Dec 18, 12:43 AM PST	Small Craft Advisory for Hazardous Seas	PQR		39 hr
Dec 18, 2:21 AM PST	River Flood Warning	PQR	Clackamas, Marion	6 days
Dec 18, 2:21 AM PST	River Flood Warning	PQR	Washington	33 hr
Dec 18, 4:04 AM PST	Freezing Rain Advisory	PQR		3 hr
Dec 18, 2:03 PM PST	Small Craft Advisory for Winds	PQR		26 hr

Nearby

River Flood Warnings in Oregon, 2015 Every river flood warning in 2015

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; the gauge from the NWS water service and the USGS.