Alert archive / West Virginia / Flash Flood Watches in 2013

Flash Flood Watch 1, NWS Charleston, WV

January 29, 201320 counties in West Virginia; Lawrence County, Kentucky

NWS Charleston, WV issued this flash flood watch at Jan 29, 2013, 4:39 PM EST for 20 counties in West Virginia; Lawrence County, Kentucky. It took effect at Jan 30, 2013, 11:00 AM EST. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Jan 29, 2013, 4:39 PM EST (21:39 UTC)
In effect from: Jan 30, 2013, 11:00 AM EST
Expired: Jan 31, 2013, 12:32 AM EST
In force: 14 hr
Issued by: NWS Charleston, WV
Flood severity: None

All 21 counties

Lawrence County, KY, Barbour County, WV, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Gilmer County, WV, Harrison County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, McDowell County, WV, Mingo County, WV, Putnam County, WV, Roane County, WV, Taylor County, WV, Upshur County, WV, Wayne County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 37 km from the middle of the area, began a volume at 21:43 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, 9.7 hours before the alert went out and 239 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: 612 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 292 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 flash flood watch 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 flash flood watch went out at Jan 29, 3:00 PM EST, 1 hour 39 minutes earlier.

Area forecast discussion, Jan 29, 3:00 PM EST, 1 hour 39 minutes before

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Hazardous weather outlook, Jan 29, 2:54 PM EST, 1 hour 45 minutes before

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Nearby

Flash Flood Watches in West Virginia, 2013 Flash Flood Watches in Kentucky, 2013 Every flash flood watch in 2013

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.