Alert archive / Ohio / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 30, NWS Wilmington, OH

April 11, 2008Scioto County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 11, 2008, 6:44 PM EDT for Scioto County, Ohio. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 11, 2008, 6:44 PM EDT (22:44 UTC)
Expired: Apr 11, 2008, 7:04 PM EDT
In force: 20 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon

County Scioto County, OH

The radar

The Cincinnati radar (KILN), 99 km from the middle of the area, began a volume at 22:47 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.7 hours before the alert went out and 98 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: 1073 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 241 m²/s²
0-3 km storm-relative helicity: 226 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 11, 2:57 PM EDT, 3 hours 47 minutes earlier.

Area forecast discussion, Apr 11, 2:57 PM EDT, 3 hours 47 minutes before

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Hazardous weather outlook, Apr 11, 4:43 PM EDT, 2 hours 1 minute before

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In the hours before

Special weather statement, Apr 11, 5:57 PM EDT, 47 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 11, 7:58 PM EDT	Severe Thunderstorm Warning	ILN	Union	32 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2008 Every severe thunderstorm warning in 2008

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.