Alert archive / West Virginia / Flash Flood Watches in 2009

Flash Flood Watch 3, NWS Charleston, WV

June 10, 200910 counties in West Virginia; Boyd County, Carter County, Lawrence County, Kentucky

NWS Charleston, WV issued this flash flood watch at Jun 10, 2009, 2:41 PM EDT for 10 counties in West Virginia; Boyd County, Carter County, Lawrence County, Kentucky. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Jun 10, 2009, 2:41 PM EDT (18:41 UTC)
Expired: Jun 10, 2009, 7:07 PM EDT
In force: 4 hr
Issued by: NWS Charleston, WV
Flood severity: None

Counties Boyd County, KY, Carter County, KY, Lawrence County, KY, Boone County, WV, Cabell County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, McDowell County, WV, Mingo County, WV, Putnam County, WV, Wayne County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 44 km from the middle of the area, began a volume at 18:44 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

Roanoke, VA (KRNK), launched 12:00Z, 6.7 hours before the alert went out and 251 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: 366 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 726 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 86 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 Jun 10, 2:32 PM EDT, 9 minutes earlier.

Area forecast discussion, Jun 10, 2:32 PM EDT, 9 minutes before

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Hazardous weather outlook, Jun 10, 3:50 AM EDT, 10 hours 51 minutes before

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In the hours before

Special weather statement, Jun 10, 12:52 PM EDT, 1 hour 49 minutes before

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Special weather statement, Jun 10, 1:13 PM EDT, 1 hour 28 minutes before

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Special weather statement, Jun 10, 1:40 PM EDT, 1 hour 1 minute before

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Special weather statement, Jun 10, 2:13 PM EDT, 28 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
Jun 10, 12:55 PM EDT	Areal Flood Warning	RLX	Cabell, Wayne	3 hr

Nearby

Flash Flood Watches in West Virginia, 2009 Flash Flood Watches in Kentucky, 2009 Every flash flood watch in 2009

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.