Alert archive / Alabama / River Flood Warnings in 2009

River Flood Warning 47, NWS Birmingham, AL

September 18, 2009Bibb County, Jefferson County, Shelby County, Alabama

NWS Birmingham, AL issued this river flood warning at Sep 18, 2009, 6:48 AM CDT for Bibb County, Jefferson County, Shelby County, Alabama. It took effect at Sep 18, 2009, 7:52 AM CDT. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Sep 18, 2009, 6:48 AM CDT (11:48 UTC)
In effect from: Sep 18, 2009, 7:52 AM CDT
Expired: Sep 18, 2009, 8:45 PM CDT
In force: 13 hr
Issued by: NWS Birmingham, AL
Flood severity: Minor

Counties Bibb County, AL, Jefferson County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 16 km from the middle of the area, began a volume at 11:51 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 Cahaba River near Cahaba Heights (CHGA1).

Action stage: 14 ft
Minor stage: 14 ft
Moderate stage: 22 ft
Major stage: 24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02423425, 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 Birmingham, AL wrote its last area forecast discussion before this river flood warning went out at Sep 18, 6:20 AM CDT, 28 minutes earlier.

Area forecast discussion, Sep 18, 6:20 AM CDT, 28 minutes before

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<body>
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    <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.
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      <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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Hazardous weather outlook, Sep 18, 6:00 AM CDT, 48 minutes before

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<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>
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In the hours before

Local storm report, Sep 18, 1:37 AM CDT, 5 hours 11 minutes before

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<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 Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 17, 7:23 PM CDT	Areal Flood Advisory	BMX	St. Clair	112 min
Sep 17, 8:06 PM CDT	Flash Flood Warning	BMX	Jefferson, St. Clair	3 hr
Sep 17, 9:26 PM CDT	Flash Flood Warning	BMX	Jefferson, St. Clair, Shelby	3 hr
Sep 18, 12:33 AM CDT	Flash Flood Warning	BMX	Jefferson, St. Clair, Shelby	5 hr
Sep 18, 2:57 AM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	2 hr
Sep 18, 5:02 AM CDT	Flash Flood Watch	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	5 days
Sep 18, 3:55 PM CDT	Areal Flood Advisory	BMX	Marengo	2 hr
Sep 18, 5:41 PM CDT	Areal Flood Advisory	BMX	Lowndes	2 hr
Sep 18, 5:54 PM CDT	Areal Flood Advisory	BMX	Perry	2 hr
Sep 18, 6:29 PM CDT	Areal Flood Advisory	BMX	Tuscaloosa	2 hr

Nearby

River Flood Warnings in Alabama, 2009 Every river flood 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.