Alert archive / Kentucky / Winter Storm Warnings in 2009

Winter Storm Warning 1, NWS Louisville, KY

January 26, 200931 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this winter storm warning at Jan 26, 2009, 4:25 AM EST for 31 counties in Kentucky; 10 counties in Indiana. It took effect at Jan 26, 2009, 10:00 PM EST. It was in force for 38 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 26, 2009, 4:25 AM EST (09:25 UTC)
In effect from: Jan 26, 2009, 10:00 PM EST
Expired: Jan 28, 2009, 11:59 AM EST
In force: 38 hr
Issued by: NWS Louisville, KY

All 41 counties

Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Anderson County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Clark County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Madison County, KY, Marion County, KY, Meade County, KY, Mercer County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY, Washington County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 46 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

Lincoln, IL (KILX), launched 00:00Z, 9.4 hours before the alert went out and 357 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: 795 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 176 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 warning 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 warning went out at Jan 26, 3:10 AM EST, 1 hour 15 minutes earlier.

Area forecast discussion, Jan 26, 3:10 AM EST, 1 hour 15 minutes before

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Hazardous weather outlook, Jan 26, 12:21 AM EST, 4 hours 4 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 26, 4:25 AM EST	Ice Storm Warning	LMK	Adair, Allen, Barren, Butler, Casey, Clinton and 12 more	33 hr

Nearby

Winter Storm Warnings in Kentucky, 2009 Winter Storm Warnings in Indiana, 2009 Every winter storm warning 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.