Alert archive / Indiana / Areal Flood Warnings in 2012

Areal Flood Warning 6, NWS Indianapolis, IN

September 25, 2012Daviess County, Knox County, Martin County, Indiana

NWS Indianapolis, IN issued this areal flood warning at Sep 25, 2012, 10:38 PM EDT for Daviess County, Knox County, Martin County, Indiana. It was in force for 7 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: Sep 25, 2012, 10:38 PM EDT (02:38 UTC)
Expired: Sep 26, 2012, 5:30 AM EDT
In force: 7 hr
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Flood severity: None

Counties Daviess County, IN, Knox County, IN, Martin County, IN

The radar

The Evansville,IN radar (KVWX), 73 km from the middle of the area, began a volume at 02:40 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, 2.6 hours before the alert went out and 207 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: 1015 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 957 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 5.3

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 Sep 25, 10:25 PM EDT, 13 minutes earlier.

Area forecast discussion, Sep 25, 10:25 PM EDT, 13 minutes before

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Hazardous weather outlook, Sep 25, 4:43 PM EDT, 5 hours 55 minutes before

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    <section class="card" role="status" aria-live="polite">
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 26, 5:33 AM EDT	Areal Flood Warning	IND	Daviess, Knox, Martin	6 hr
Sep 26, 6:07 AM EDT	Special Weather Statement	IND	Daviess, Knox, Martin	38 min
Sep 26, 6:40 AM EDT	Special Weather Statement	IND	Daviess, Lawrence, Martin	50 min
Sep 26, 7:24 AM EDT	Special Weather Statement	IND	Jackson, Lawrence	51 min
Sep 26, 11:02 AM EDT	Special Weather Statement	IND	Daviess, Martin	43 min
Sep 26, 11:33 AM EDT	Areal Flood Advisory	IND	Daviess, Knox	3 hr
Sep 26, 12:44 PM EDT	Special Weather Statement	IND	Lawrence, Martin	31 min
Sep 26, 1:40 PM EDT	Special Weather Statement	IND	Jennings	50 min

Nearby

Areal Flood Warnings in Indiana, 2012 Every areal flood warning in 2012

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.