Alert archive / Ohio / Areal Flood Warnings in 2011

Areal Flood Warning 24, NWS Charleston, WV

April 22, 2011Gallia County, Lawrence County, Ohio; Greenup County, Kentucky

NWS Charleston, WV issued this areal flood warning at Apr 22, 2011, 9:29 PM EDT for Gallia County, Lawrence County, Ohio; Greenup County, Kentucky. 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: Apr 22, 2011, 9:29 PM EDT (01:29 UTC)
Expired: Apr 23, 2011, 12:30 AM EDT
In force: 3 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Greenup County, KY, Gallia County, OH, Lawrence County, OH

The radar

The Charleston,WV radar (KRLX), 85 km from the middle of the area, began a volume at 01:30 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, 1.5 hours before the alert went out and 135 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: 565 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 Charleston, WV wrote its last area forecast discussion before this areal flood warning went out at Apr 22, 7:46 PM EDT, 1 hour 43 minutes earlier.

Area forecast discussion, Apr 22, 7:46 PM EDT, 1 hour 43 minutes before

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Hazardous weather outlook, Apr 22, 5:03 PM EDT, 4 hours 26 minutes before

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In the hours before

Special weather statement, Apr 22, 8:34 PM EDT, 55 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 22, 8:34 PM EDT	Special Weather Statement	RLX	Clay, Kanawha	41 min
Apr 23, 7:35 AM EDT	Special Weather Statement	RLX	Cabell, Jackson, Kanawha, Lincoln, Mason, Putnam and 1 more	55 min
Apr 23, 4:42 PM EDT	Severe Thunderstorm Warning	RLX	Wayne	48 min
Apr 23, 5:12 PM EDT	Severe Thunderstorm Warning	RLX	Cabell, Jackson, Mason, Putnam	63 min
Apr 23, 5:21 PM EDT	Severe Thunderstorm Warning	RLX	Cabell, Kanawha, Lincoln, Putnam, Wayne	54 min
Apr 23, 5:34 PM EDT	Tornado Warning	RLX	Cabell, Mason, Putnam	26 min
Apr 23, 6:05 PM EDT	Severe Thunderstorm Warning	RLX	Braxton, Calhoun, Clay, Fayette, Jackson, Kanawha and 3 more	55 min
Apr 23, 6:19 PM EDT	Severe Thunderstorm Warning	RLX	Boone, Fayette, Kanawha, Lincoln, Nicholas	20 min
Apr 23, 6:56 PM EDT	Severe Thunderstorm Warning	RLX	Braxton, Calhoun, Clay, Fayette, Gilmer, Kanawha and 7 more	64 min
Apr 23, 3:16 AM EDT	Special Weather Statement	RLX	Athens, Gallia, Jackson, Lawrence, Meigs, Morgan and 3 more	119 min
Apr 23, 6:19 AM EDT	Flash Flood Warning	RLX	Gallia, Lawrence	3 hr
Apr 23, 7:03 AM EDT	Severe Thunderstorm Warning	RLX	Lawrence	42 min
Apr 23, 12:13 PM EDT	Areal Flood Warning	RLX	Gallia, Jackson, Lawrence	6 hr
Apr 23, 4:27 PM EDT	Severe Thunderstorm Warning	RLX	Lawrence	48 min
Apr 23, 4:53 PM EDT	Special Weather Statement	RLX	Jackson, Meigs	37 min
Apr 23, 6:08 PM EDT	Areal Flood Warning	RLX	Gallia, Jackson, Lawrence	6 hr
Apr 23, 6:46 AM EDT	Special Weather Statement	RLX	Boyd, Carter, Lawrence	89 min

Nearby

Areal Flood Warnings in Ohio, 2011 Areal Flood Warnings in Kentucky, 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.