Alert archive / Ohio / Areal Flood Warnings in 2016

Areal Flood Warning 34, NWS Charleston, WV

December 18, 2016Washington County, Ohio

NWS Charleston, WV issued this areal flood warning at Dec 18, 2016, 6:57 AM EST for Washington County, Ohio. It was in force for 21 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: Dec 18, 2016, 6:57 AM EST (11:57 UTC)
Expired: Dec 19, 2016, 4:02 AM EST
In force: 21 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

County Washington County, OH

The radar

The Charleston,WV radar (KRLX), 129 km from the middle of the area, began a volume at 11:59 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

Pittsburgh, PA (KAGC), launched 00:00Z, 12.0 hours before the alert went out and 159 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: 2 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 630 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: 636 m²/s²
0-3 km storm-relative helicity: 672 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Dec 18, 6:31 AM EST, 26 minutes earlier.

Area forecast discussion, Dec 18, 6:31 AM EST, 26 minutes before

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Hazardous weather outlook, Dec 18, 4:53 AM EST, 2 hours 4 minutes before

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In the hours before

Special weather statement, Dec 18, 2:07 AM EST, 4 hours 50 minutes before

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Special weather statement, Dec 18, 2:10 AM EST, 4 hours 47 minutes before

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Special weather statement, Dec 18, 2:44 AM EST, 4 hours 13 minutes before

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Special weather statement, Dec 18, 3:33 AM EST, 3 hours 24 minutes before

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Special weather statement, Dec 18, 3:37 AM EST, 3 hours 20 minutes before

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Special weather statement, Dec 18, 3:48 AM EST, 3 hours 9 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
Dec 18, 12:48 AM EST	Special Weather Statement	RLX	Pleasants, Tyler	57 min
Dec 18, 12:58 AM EST	Severe Thunderstorm Warning	RLX	Pleasants, Tyler, Wood	47 min
Dec 18, 1:14 AM EST	Severe Thunderstorm Warning	RLX	Mason	46 min
Dec 18, 1:34 AM EST	Special Weather Statement	RLX	Cabell, Lincoln, Wayne	26 min
Dec 18, 1:52 AM EST	Special Weather Statement	RLX	Jackson, Mason, Pleasants, Wirt, Wood	23 min
Dec 18, 2:07 AM EST	Special Weather Statement	RLX	Cabell, Jackson, Lincoln, Mason, Pleasants, Putnam and 5 more	53 min
Dec 18, 2:10 AM EST	Special Weather Statement	RLX	Cabell, Jackson, Lincoln, Mason, Pleasants, Putnam and 5 more	50 min
Dec 18, 2:44 AM EST	Special Weather Statement	RLX	Barbour, Boone, Braxton, Calhoun, Clay, Doddridge and 12 more	46 min
Dec 18, 3:33 AM EST	Special Weather Statement	RLX	Logan, McDowell, Mingo, Raleigh, Wyoming	57 min
Dec 18, 3:37 AM EST	Special Weather Statement	RLX	Barbour, Boone, Braxton, Clay, Fayette, Lewis and 6 more	53 min
Dec 18, 9:03 AM EST	Areal Flood Warning	RLX	Washington	6 hr
Dec 18, 11:12 AM EST	Areal Flood Warning	RLX	Washington	20 hr
Dec 18, 2:35 PM EST	Areal Flood Warning	RLX	Washington	14 hr
Dec 18, 12:52 AM EST	Severe Thunderstorm Warning	RLX	Greenup	38 min

Nearby

Areal Flood Warnings in Ohio, 2016 Every areal flood warning in 2016

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.