Alert archive / Kentucky / Flood Watches in 2011

Flood Watch 1, NWS Jackson, KY

February 23, 201124 counties in Kentucky

NWS Jackson, KY issued this flood watch at Feb 23, 2011, 4:08 AM EST for 24 counties in Kentucky. It took effect at Feb 24, 2011, 12:00 PM EST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Feb 23, 2011, 4:08 AM EST (09:08 UTC)
In effect from: Feb 24, 2011, 12:00 PM EST
Expired: Feb 25, 2011, 4:12 AM EST
In force: 16 hr
Issued by: NWS Jackson, KY
Flood severity: None

All 24 counties

Bath County, KY, Breathitt County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Jackson County, KY, Johnson County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Magoffin County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Owsley County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY

The radar

The Jackson,KY radar (KJKL), 41 km from the middle of the area, began a volume at 09:09 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, 9.1 hours before the alert went out and 208 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: 568 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 131 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 flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, KY wrote its last area forecast discussion before this flood watch went out at Feb 23, 3:33 AM EST, 35 minutes earlier.

Area forecast discussion, Feb 23, 3:33 AM EST, 35 minutes before

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Hazardous weather outlook, Feb 22, 9:10 PM EST, 6 hours 58 minutes before

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Nearby

Flood Watches in Kentucky, 2011 Every flood watch 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.