Alert archive / Kentucky / Winter Storm Watches in 2011

Winter Storm Watch 2, NWS Louisville, KY

January 25, 201130 counties in Kentucky

NWS Louisville, KY issued this winter storm watch at Jan 25, 2011, 3:26 AM CST for 30 counties in Kentucky. It took effect at Jan 25, 2011, 9:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 25, 2011, 3:26 AM CST (09:26 UTC)
In effect from: Jan 25, 2011, 9:00 PM CST
Expired: Jan 25, 2011, 1:54 PM CST
In force
Issued by: NWS Louisville, KY

All 30 counties

Adair County, KY, Allen County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Fayette County, KY, Garrard County, KY, Green County, KY, Hart County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nicholas County, KY, Russell County, KY, Simpson County, KY, Taylor County, KY, Warren County, KY, Washington County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 89 km from the middle of the area, began a volume at 09:30 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

Nashville Metro, TN (KBNA), launched 00:00Z, 9.4 hours before the alert went out and 184 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: 1481 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 281 m²/s²
0-3 km storm-relative helicity: 311 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 winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Louisville, KY wrote its last area forecast discussion before this winter storm watch went out at Jan 25, 2:54 AM CST, 32 minutes earlier.

Area forecast discussion, Jan 25, 2:54 AM CST, 32 minutes before

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Hazardous weather outlook, Jan 24, 9:15 PM CST, 6 hours 11 minutes before

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In the hours before

Special weather statement, Jan 24, 9:27 PM CST, 5 hours 59 minutes before

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Special weather statement, Jan 24, 10:38 PM CST, 4 hours 48 minutes before

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The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 25, 2:42 AM CST	Dense Fog Advisory	LMK	Allen, Anderson, Barren, Bourbon, Boyle, Breckinridge and 30 more	8 hr
Jan 25, 1:54 PM CST	Winter Weather Advisory	LMK	Adair, Allen, Anderson, Barren, Bourbon, Boyle and 42 more	24 hr

Nearby

Winter Storm Watches in Kentucky, 2011 Every winter storm 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.