Alert archive / Washington / River Flood Warnings in 2023

River Flood Warning 29, NWS Seattle, WA

December 5, 2023Whatcom County, Washington

NWS Seattle, WA issued this river flood warning at Dec 5, 2023, 11:46 AM PST for Whatcom County, Washington. It took effect at Dec 5, 2023, 3:46 PM PST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Dec 5, 2023, 11:46 AM PST (19:46 UTC)
In effect from: Dec 5, 2023, 3:46 PM PST
Expired: Dec 6, 2023, 12:33 AM PST
In force: 9 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Minor

County Whatcom County, WA

The radar

The Seattle radar (KATX), 84 km from the middle of the area, began a volume at 19:46 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 river

Written for the forecast point Nooksack River at Ferndale (NKSW1). The gauge peaked at 16.41 ft at Dec 5, 2023, 10:00 PM PST.

Action stage: 15 ft
Minor stage: 18 ft
Moderate stage: 20.5 ft
Major stage: 23 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12213100, 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 Seattle, WA wrote its last area forecast discussion before this river flood warning went out at Dec 5, 8:59 AM PST, 2 hours 47 minutes earlier.

Area forecast discussion, Dec 5, 8:59 AM PST, 2 hours 47 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

Local storm report, Dec 5, 6:09 AM PST, 5 hours 37 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>

Local storm report, Dec 5, 6:48 AM PST, 4 hours 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>

The office that day

Everything else NWS Seattle, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 4, 4:49 PM PST	River Flood Warning	SEW	King	31 hr
Dec 4, 4:49 PM PST	River Flood Warning	SEW	Snohomish	43 hr
Dec 4, 4:49 PM PST	River Flood Warning	SEW	King	43 hr
Dec 4, 4:49 PM PST	River Flood Warning	SEW	King	3 days
Dec 4, 4:56 PM PST	River Flood Warning	SEW	Skagit	56 hr
Dec 4, 9:56 PM PST	River Flood Warning	SEW	Clallam	20 hr
Dec 4, 11:12 PM PST	Areal Flood Warning	SEW	Jefferson	17 hr
Dec 5, 1:56 AM PST	Small Craft Advisory	SEW		4 hr
Dec 5, 2:01 AM PST	River Flood Warning	SEW	Snohomish	22 hr
Dec 5, 2:01 AM PST	River Flood Warning	SEW	Snohomish	26 hr
Dec 5, 2:01 AM PST	River Flood Warning	SEW	Snohomish	22 hr
Dec 5, 4:25 AM PST	River Flood Warning	SEW	Lewis	19 hr
Dec 5, 4:27 AM PST	River Flood Warning	SEW	Lewis, Pierce	42 hr
Dec 5, 5:12 AM PST	River Flood Warning	SEW	Grays Harbor	19 hr
Dec 5, 7:28 AM PST	Areal Flood Advisory	SEW	Grays Harbor, King, Kitsap, Lewis, Pierce, Snohomish and 1 more	6 hr
Dec 5, 7:56 AM PST	River Flood Warning	SEW	Whatcom	10 hr
Dec 5, 8:24 AM PST	River Flood Warning	SEW	Lewis	59 hr
Dec 5, 8:24 AM PST	River Flood Warning	SEW	Lewis	39 hr
Dec 5, 8:24 AM PST	River Flood Warning	SEW	Skagit	44 hr
Dec 5, 9:08 AM PST	River Flood Warning	SEW	Snohomish	38 hr
Dec 5, 9:08 AM PST	River Flood Warning	SEW	Snohomish	45 hr
Dec 5, 11:04 AM PST	River Flood Warning	SEW	Whatcom	10 hr
Dec 5, 11:46 AM PST	River Flood Warning	SEW	Grays Harbor, Thurston	68 hr
Dec 5, 1:29 PM PST	Areal Flood Advisory	SEW	Grays Harbor, Island, King, Kitsap, Lewis, Mason and 3 more	11 hr
Dec 5, 3:47 PM PST	River Flood Warning	SEW	Grays Harbor	3 days

Nearby

River Flood Warnings in Washington, 2023 Every river flood warning in 2023

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.