Alert archive / Iowa / Areal Flood Warnings in 2016

Areal Flood Warning 3, NWS Des Moines, IA

June 15, 2016Butler County, Iowa

NWS Des Moines, IA issued this areal flood warning at Jun 15, 2016, 4:12 AM CDT for Butler County, Iowa. It was in force for 24 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: Jun 15, 2016, 4:12 AM CDT (09:12 UTC)
Expired: Jun 16, 2016, 4:15 AM CDT
In force: 24 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: None

County Butler County, IA

The radar

The Des Moines radar (KDMX), 135 km from the middle of the area, began a volume at 09:13 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

Davenport, (KDVN), launched 00:00Z, 9.2 hours before the alert went out and 226 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: 2459 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 202 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 11.2

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 Des Moines, IA wrote its last area forecast discussion before this areal flood warning went out at Jun 15, 4:12 AM CDT, 0 minutes earlier.

Area forecast discussion, Jun 15, 4:12 AM CDT, 0 minutes before

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Hazardous weather outlook, Jun 14, 11:46 PM CDT, 4 hours 26 minutes before

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<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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 7:19 PM CDT	Special Weather Statement	DMX	Dallas	56 min
Jun 14, 7:43 PM CDT	Severe Thunderstorm Warning	DMX	Dallas	47 min
Jun 15, 10:09 AM CDT	River Flood Warning	DMX	Black Hawk	4 days
Jun 15, 3:20 PM CDT	Heat Advisory	DMX	Adair, Adams, Cass, Ringgold, Taylor, Union	24 hr

Nearby

Areal Flood Warnings in Iowa, 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.