Alert archive / Minnesota / Areal Flood Advisories in 2008

Areal Flood Advisory 8, NWS Twin Cities, MN

July 17, 2008Blue Earth County, Steele County, Waseca County, Minnesota

NWS Twin Cities, MN issued this areal flood advisory at Jul 17, 2008, 10:46 AM CDT for Blue Earth County, Steele County, Waseca County, Minnesota. It was in force for 119 min.

The area

The counties it named.

The facts

Issued: Jul 17, 2008, 10:46 AM CDT (15:46 UTC)
Expired: Jul 17, 2008, 12:45 PM CDT
In force: 119 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

Counties Blue Earth County, MN, Steele County, MN, Waseca County, MN

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 3.8 hours before the alert went out and 92 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: 1196 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -22 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 areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this areal flood advisory went out at Jul 16, 3:35 PM CDT, 19 hours 11 minutes earlier.

Area forecast discussion, Jul 16, 3:35 PM CDT, 19 hours 11 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, Jul 16, 3:24 PM CDT, 19 hours 22 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 Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 7:07 AM CDT	Severe Thunderstorm Warning	MPX	Watonwan	38 min
Jul 17, 7:41 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Watonwan	49 min
Jul 17, 8:44 AM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet, Redwood, Renville, Sibley	61 min
Jul 17, 9:18 AM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice, Steele, Waseca	57 min
Jul 17, 10:40 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Freeborn, Waseca	65 min
Jul 17, 10:56 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele	64 min
Jul 17, 12:19 PM CDT	Flash Flood Watch	MPX	Blue Earth, Dakota, Faribault, Freeborn, Goodhue, Le Sueur and 5 more	8 hr

Nearby

Areal Flood Advisories in Minnesota, 2008 Every areal flood advisory in 2008

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.