Alert archive / Kentucky / Ice Storm Warnings in 2008

Ice Storm Warning 1, NWS Louisville, KY

February 21, 200841 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this ice storm warning at Feb 21, 2008, 2:44 AM CST for 41 counties in Kentucky; 10 counties in Indiana. It took effect at Feb 21, 2008, 7:14 AM CST. It was in force for 20 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: Feb 21, 2008, 2:44 AM CST (08:44 UTC)
In effect from: Feb 21, 2008, 7:14 AM CST
Expired: Feb 22, 2008, 2:44 AM CST
In force: 20 hr
Issued by: NWS Louisville, KY

All 51 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, Allen County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Clark County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Logan 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, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 33 km from the middle of the area, began a volume at 08:49 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, 8.7 hours before the alert went out and 363 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: 1233 m above ground
0-6 km bulk shear: 88 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 124 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 ice 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 ice storm warning went out at Feb 21, 2:05 AM CST, 39 minutes earlier.

Area forecast discussion, Feb 21, 2:05 AM CST, 39 minutes before

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Hazardous weather outlook, Feb 20, 9:45 AM CST, 16 hours 59 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
Feb 21, 2:44 AM CST	Freezing Rain Advisory	LMK	Adair, Allen, Barren, Butler, Casey, Clinton and 12 more	15 hr
Feb 21, 5:56 PM CST	Freezing Rain Advisory	LMK	Casey, Green, Hart, Lincoln, Taylor	9 hr

Nearby

Ice Storm Warnings in Kentucky, 2008 Ice Storm Warnings in Indiana, 2008 Every ice storm warning in 2008

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.