Alert archive / Iowa / Flash Flood Warnings in 1993

Flash Flood Warning 10, NWS Quad Cities, IA

June 30, 1993Clayton County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Jun 30, 1993, 7:44 AM CDT for Clayton County, Iowa. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jun 30, 1993, 7:44 AM CDT (12:44 UTC)
Expired: Jun 30, 1993, 11:00 AM CDT
In force: 3 hr
Issued by: NWS Quad Cities, IA
Area: Whole counties

County Clayton County, IA

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 0.7 hours before the alert went out and 318 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 943 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 30, 1:49 AM CDT, 5 hours 55 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>

Special weather statement, Jun 30, 1:49 AM CDT, 5 hours 55 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>

Special weather statement, Jun 30, 2:07 AM CDT, 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>

Special weather statement, Jun 30, 2:07 AM CDT, 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>

Special weather statement, Jun 30, 4:15 AM CDT, 3 hours 29 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>

Special weather statement, Jun 30, 4:16 AM CDT, 3 hours 28 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 Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 7:47 PM CDT	Flash Flood Warning	DVN	Clayton	12 hr
Jun 29, 8:59 PM CDT	Severe Thunderstorm Warning	DVN	Clayton	31 min
Jun 29, 9:51 PM CDT	Severe Thunderstorm Warning	DVN	Clayton, Delaware	54 min
Jun 29, 10:06 PM CDT	Severe Thunderstorm Warning	DVN	Jones	54 min
Jun 29, 10:23 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque	37 min
Jun 29, 10:47 PM CDT	Severe Thunderstorm Warning	DVN	Cedar	43 min
Jun 29, 10:52 PM CDT	Severe Thunderstorm Warning	DVN	Jackson	68 min
Jun 29, 11:03 PM CDT	Flash Flood Warning	DVN	Jones	115 min
Jun 29, 11:11 PM CDT	Severe Thunderstorm Warning	DVN	Muscatine, Scott	49 min
Jun 29, 11:11 PM CDT	Severe Thunderstorm Warning	DVN	Clinton	49 min
Jun 29, 11:36 PM CDT	Flash Flood Warning	DVN	Jackson	82 min
Jun 29, 11:48 PM CDT	Severe Thunderstorm Warning	DVN	Jackson	57 min
Jun 29, 11:54 PM CDT	Severe Thunderstorm Warning	DVN	Jackson	51 min
Jun 30, 12:04 AM CDT	Severe Thunderstorm Warning	DVN	Jones	26 min
Jun 30, 12:06 AM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Lee	54 min
Jun 30, 1:35 AM CDT	Flash Flood Warning	DVN	Scott	3 hr
Jun 30, 6:25 PM CDT	Flash Flood Warning	DVN	Clayton	14 hr
Jun 29, 11:36 PM CDT	Severe Thunderstorm Warning	DVN	Mercer, Rock Island	69 min
Jun 30, 12:06 AM CDT	Severe Thunderstorm Warning	DVN	Henry	54 min
Jun 30, 12:17 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Whiteside	58 min
Jun 30, 1:35 AM CDT	Flash Flood Warning	DVN	Henry	3 hr
Jun 30, 12:14 AM CDT	Severe Thunderstorm Warning	DVN	Lafayette	44 min

Nearby

Flash Flood Warnings in Iowa, 1993 Every flash flood warning in 1993

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.