Alert archive / Missouri / Areal Flood Warnings in 2016

Areal Flood Warning 5, NWS St. Louis, MO

August 2, 201611 counties in Missouri

NWS St. Louis, MO issued this areal flood warning at Aug 2, 2016, 11:31 AM CDT for 11 counties in Missouri. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 2, 2016, 11:31 AM CDT (16:31 UTC)
Expired: Aug 2, 2016, 5:30 PM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Franklin County, MO, Gasconade County, MO, Knox County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Shelby County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 101 km from the middle of the area, began a volume at 16:31 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 4.5 hours before the alert went out and 297 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: 71 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 934 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 96 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this areal flood warning went out at Aug 2, 4:53 AM CDT, 6 hours 38 minutes earlier.

Area forecast discussion, Aug 2, 4:53 AM CDT, 6 hours 38 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, Aug 2, 4:24 AM CDT, 7 hours 7 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, Aug 2, 9:38 AM CDT, 1 hour 53 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, Aug 2, 10:15 AM CDT, 1 hour 16 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, Aug 2, 10:16 AM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1016 AM CDT TUE AUG 02 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0926 AM     FLOOD            MEXICO                  39.17N  91.87W
08/02/2016                   AUDRAIN            MO   BROADCAST MEDIA

            BUSINESS HIGHWAY 54 DOWN TO ONE LANE AT THE UNDERPASS
            DUE TO WATER OVER THE ROADWAY.

&&

GOSSELIN

Local storm report, Aug 2, 10:17 AM CDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1017 AM CDT TUE AUG 02 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     HEAVY RAIN       6 SE MEXICO             39.11N  91.79W
08/02/2016  M3.75 INCH       AUDRAIN            MO   COCORAHS

            24 HOUR TOTAL

&&

WALSH

Local storm report, Aug 2, 10:18 AM CDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1018 AM CDT TUE AUG 02 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     HEAVY RAIN       3 NNW KINGDOM CITY      38.99N  91.96W
08/02/2016  M3.38 INCH       CALLAWAY           MO   COCORAHS

            24 HOUR TOTAL

&&

WALSH

Local storm report, Aug 2, 10:20 AM CDT, 1 hour 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>

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 2, 2:09 AM CDT	Flash Flood Warning	LSX	Audrain, Callaway, Monroe, Montgomery	6 hr
Aug 2, 2:59 AM CDT	Flash Flood Warning	LSX	Franklin, Gasconade, Osage, Warren	5 hr
Aug 2, 4:02 AM CDT	Flash Flood Warning	LSX	Shelby	5 hr
Aug 2, 4:57 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Monroe	5 hr
Aug 2, 5:34 AM CDT	Flash Flood Warning	LSX	Knox	6 hr
Aug 2, 7:57 AM CDT	Flash Flood Warning	LSX	Franklin, Gasconade, Osage, Warren	4 hr
Aug 2, 8:08 AM CDT	Flash Flood Warning	LSX	Audrain, Callaway, Monroe, Montgomery	4 hr
Aug 2, 8:58 AM CDT	Flash Flood Warning	LSX	Monroe, Shelby	3 hr
Aug 2, 10:00 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Monroe	2 hr
Aug 2, 3:05 PM CDT	Flash Flood Watch	LSX	Franklin, Jefferson, Lewis, Lincoln, Marion, Pike and 6 more	14 hr

Nearby

Areal Flood Warnings in Missouri, 2016 Every areal flood warning in 2016

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; radar from the NEXRAD Level II archive.