Alert archive / Kentucky / Freeze Warnings in 2007

Freeze Warning 1, NWS Jackson, KY

April 4, 200733 counties in Kentucky

NWS Jackson, KY issued this freeze warning at Apr 4, 2007, 4:25 AM EDT for 33 counties in Kentucky. It took effect at Apr 5, 2007, 4:00 AM EDT. It was in force for 7 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: Apr 4, 2007, 4:25 AM EDT (08:25 UTC)
In effect from: Apr 5, 2007, 4:00 AM EDT
Expired: Apr 5, 2007, 10:31 AM EDT
In force: 7 hr
Issued by: NWS Jackson, KY

All 33 counties

Bath County, KY, Bell County, KY, Breathitt County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Floyd County, KY, Harlan County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Magoffin County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike 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), 26 km from the middle of the area, began a volume at 08:31 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, 8.4 hours before the alert went out and 309 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: 1678 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1714 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 10.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze warning 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 freeze warning went out at Apr 4, 3:35 AM EDT, 50 minutes earlier.

Area forecast discussion, Apr 4, 3:35 AM EDT, 50 minutes before

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Hazardous weather outlook, Apr 4, 12:00 AM EDT, 4 hours 25 minutes before

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In the hours before

Local storm report, Apr 3, 11:22 PM EDT, 5 hours 3 minutes before

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Local storm report, Apr 3, 11:32 PM EDT, 4 hours 53 minutes before

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Local storm report, Apr 3, 11:37 PM EDT, 4 hours 48 minutes before

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Local storm report, Apr 3, 11:45 PM EDT, 4 hours 40 minutes before

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Local storm report, Apr 3, 11:47 PM EDT, 4 hours 38 minutes before

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Local storm report, Apr 4, 4:06 AM EDT, 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 8:08 PM EDT	Severe Thunderstorm Warning	JKL	Estill, Jackson	52 min
Apr 3, 8:30 PM EDT	Severe Thunderstorm Warning	JKL	Menifee	36 min
Apr 3, 8:32 PM EDT	Severe Thunderstorm Warning	JKL	Powell	28 min
Apr 3, 8:44 PM EDT	Severe Thunderstorm Warning	JKL	Lee, Wolfe	46 min
Apr 3, 8:47 PM EDT	Tornado Warning	JKL	Pulaski	43 min
Apr 3, 8:49 PM EDT	Severe Thunderstorm Warning	JKL	Wayne	41 min
Apr 3, 8:50 PM EDT	Severe Thunderstorm Warning	JKL	Laurel	40 min
Apr 3, 8:52 PM EDT	Severe Thunderstorm Warning	JKL	Morgan	38 min
Apr 3, 8:54 PM EDT	Severe Thunderstorm Warning	JKL	McCreary, Pulaski	66 min
Apr 3, 8:57 PM EDT	Severe Thunderstorm Warning	JKL	Jackson, Owsley, Rockcastle	48 min
Apr 3, 9:04 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Magoffin	56 min
Apr 3, 9:09 PM EDT	Severe Thunderstorm Warning	JKL	Clay	51 min
Apr 3, 9:15 PM EDT	Flash Flood Warning	JKL	Wayne	2 hr
Apr 3, 9:16 PM EDT	Severe Thunderstorm Warning	JKL	Knox, Whitley	59 min
Apr 3, 9:23 PM EDT	Tornado Warning	JKL	Laurel	34 min
Apr 3, 9:26 PM EDT	Tornado Warning	JKL	Whitley	39 min
Apr 3, 9:30 PM EDT	Tornado Warning	JKL	Clay	36 min
Apr 3, 9:34 PM EDT	Severe Thunderstorm Warning	JKL	Leslie, Perry	56 min
Apr 3, 9:47 PM EDT	Severe Thunderstorm Warning	JKL	Bell	28 min
Apr 3, 9:52 PM EDT	Severe Thunderstorm Warning	JKL	Clay, Knox, Leslie	38 min
Apr 3, 10:07 PM EDT	Severe Thunderstorm Warning	JKL	Harlan	38 min
Apr 3, 10:12 PM EDT	Severe Thunderstorm Warning	JKL	Letcher	54 min

Nearby

Freeze Warnings in Kentucky, 2007 Every freeze warning in 2007

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.