Alert archive / Ohio / Flash Flood Watches in 2006

Flash Flood Watch 11, NWS Charleston, WV

October 4, 2006Jackson County, Mason County, Wood County, West Virginia; 9 counties in Ohio

NWS Charleston, WV issued this flash flood watch at Oct 4, 2006, 9:34 PM EDT for Jackson County, Mason County, Wood County, West Virginia; 9 counties in Ohio. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Oct 4, 2006, 9:34 PM EDT (01:34 UTC)
Expired
Oct 5, 2006, 3:00 AM EDT
In force
5 hr
Issued by
NWS Charleston, WV
Flood severity
None

Counties Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Jackson County, WV, Mason County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 97 km from the middle of the area, began a volume at 01:35 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, 1.6 hours before the alert went out and 152 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2006-10-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1376 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2006-10-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 207 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1376 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
951 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
207 m²/s²
0-3 km storm-relative helicity
231 m²/s²
Significant tornado parameter
1.6
Supercell composite
8.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 4, 9:34 PM EDTSevere Thunderstorm WarningRLXJackson41 min
Oct 4, 10:08 PM EDTSevere Thunderstorm WarningRLXRoane37 min
Oct 5, 3:20 AM EDTFlash Flood WatchRLXCabell, Jackson, Kanawha, Lincoln, Mason, Putnam and 1 more5 hr
Oct 4, 9:12 PM EDTSevere Thunderstorm WarningRLXMeigs33 min

Nearby

Flash Flood Watches in Ohio, 2006Flash Flood Watches in West Virginia, 2006Every flash flood watch in 2006

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.