Alert archive / Indiana / Areal Flood Warnings in 2017

Areal Flood Warning 15, NWS Indianapolis, IN

May 11, 20176 counties in Indiana

NWS Indianapolis, IN issued this areal flood warning at May 11, 2017, 3:12 AM EDT for 6 counties in Indiana. It was in force for 3 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: May 11, 2017, 3:12 AM EDT (07:12 UTC)
Expired: May 11, 2017, 6:15 AM EDT
In force: 3 hr
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Flood severity: None

Counties Daviess County, IN, Greene County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Sullivan County, IN

The radar

The Evansville,IN radar (KVWX), 89 km from the middle of the area, began a volume at 07:12 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 00:00Z, 7.2 hours before the alert went out and 198 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: 442 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1634 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.0

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 Indianapolis, IN wrote its last area forecast discussion before this areal flood warning went out at May 10, 6:42 PM EDT, 8 hours 30 minutes earlier.

Area forecast discussion, May 10, 6:42 PM EDT, 8 hours 30 minutes before

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Hazardous weather outlook, May 10, 5:44 PM EDT, 9 hours 28 minutes before

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</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.
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        Please try again in a few minutes.
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The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 10, 9:30 PM EDT	Areal Flood Warning	IND	Delaware, Madison, Tipton	6 hr
May 10, 10:14 PM EDT	Severe Thunderstorm Warning	IND	Clay, Parke, Sullivan, Vermillion, Vigo	46 min
May 10, 10:46 PM EDT	Severe Thunderstorm Warning	IND	Clay, Greene, Hendricks, Monroe, Morgan, Owen and 2 more	44 min
May 10, 11:23 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Hendricks, Jackson, Johnson, Marion and 3 more	52 min
May 11, 12:03 AM EDT	Severe Thunderstorm Warning	IND	Decatur, Jennings, Rush	25 min

Nearby

Areal Flood Warnings in Indiana, 2017 Every areal flood warning in 2017

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.