Alert archive / Ohio / Areal Flood Warnings in 2011

Areal Flood Warning 28, NWS Charleston, WV

April 24, 2011Gallia County, Jackson County, Lawrence County, Ohio

NWS Charleston, WV issued this areal flood warning at Apr 24, 2011, 12:40 AM EDT for Gallia County, Jackson County, Lawrence County, Ohio. It was in force for 9 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: Apr 24, 2011, 12:40 AM EDT (04:40 UTC)
Expired: Apr 24, 2011, 9:30 AM EDT
In force: 9 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Gallia County, OH, Jackson County, OH, Lawrence County, OH

The radar

The Charleston,WV radar (KRLX), 87 km from the middle of the area, began a volume at 04:42 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 00:00Z, 4.7 hours before the alert went out and 132 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: 16 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 745 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 184 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 Charleston, WV wrote its last area forecast discussion before this areal flood warning went out at Apr 23, 10:58 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Apr 23, 10:58 PM EDT, 1 hour 42 minutes before

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Hazardous weather outlook, Apr 23, 8:42 PM EDT, 3 hours 58 minutes before

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In the hours before

Local storm report, Apr 23, 10:12 PM EDT, 2 hours 28 minutes before

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Local storm report, Apr 23, 10:12 PM EDT, 2 hours 28 minutes before

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Local storm report, Apr 23, 10:16 PM EDT, 2 hours 24 minutes before

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Local storm report, Apr 23, 10:17 PM EDT, 2 hours 23 minutes before

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Local storm report, Apr 23, 10:19 PM EDT, 2 hours 21 minutes before

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Local storm report, Apr 23, 10:21 PM EDT, 2 hours 19 minutes before

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The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 8:07 PM EDT	Special Weather Statement	RLX	Randolph	23 min
Apr 24, 5:29 AM EDT	Special Weather Statement	RLX	Cabell, Jackson, Lincoln, Mason, Putnam, Wayne	76 min
Apr 24, 7:32 PM EDT	Special Weather Statement	RLX	Kanawha	28 min
Apr 24, 9:27 AM EDT	Areal Flood Warning	RLX	Athens, Gallia, Jackson, Lawrence, Meigs, Vinton	24 hr
Apr 23, 9:21 PM EDT	Special Weather Statement	RLX	Boyd, Carter	24 min

Nearby

Areal Flood Warnings in Ohio, 2011 Every areal flood warning in 2011

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.