Alert archive / Kentucky / Freeze Warnings in 2015

Freeze Warning 1, NWS Jackson, KY

April 4, 201530 counties in Kentucky

NWS Jackson, KY issued this freeze warning at Apr 4, 2015, 3:37 PM EDT for 30 counties in Kentucky. It took effect at Apr 5, 2015, 1:00 AM EDT. It was in force for 8 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, 2015, 3:37 PM EDT (19:37 UTC)
In effect from: Apr 5, 2015, 1:00 AM EDT
Expired: Apr 5, 2015, 9:00 AM EDT
In force: 8 hr
Issued by: NWS Jackson, KY

All 30 counties

Bell County, KY, Breathitt County, KY, Clay County, KY, Elliott County, KY, Estill 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, 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), 29 km from the middle of the area, began a volume at 19:38 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.6 hours before the alert went out and 356 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: 1291 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: -93 m²/s²
0-3 km storm-relative helicity: 64 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 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, 2:20 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Apr 4, 2:20 PM EDT, 1 hour 17 minutes before

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Hazardous weather outlook, Apr 4, 4:25 AM EDT, 11 hours 12 minutes before

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In the hours before

Local storm report, Apr 4, 9:43 AM EDT, 5 hours 54 minutes before

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Local storm report, Apr 4, 10:38 AM EDT, 4 hours 59 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, 8:59 PM EDT	Special Weather Statement	JKL	Floyd, Magoffin, Martin, Pike	61 min
Apr 3, 9:45 PM EDT	Flash Flood Warning	JKL	Elliott	4 hr
Apr 3, 9:50 PM EDT	Special Weather Statement	JKL	Floyd, Harlan, Knott, Leslie, Letcher, Perry and 1 more	55 min
Apr 4, 3:33 AM EDT	Frost Advisory	JKL	Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more	29 hr
Apr 4, 7:58 AM EDT	River Flood Advisory	JKL	Magoffin	12 hr
Apr 4, 8:44 AM EDT	Areal Flood Advisory	JKL	Martin, Pike	8 hr
Apr 4, 8:51 AM EDT	Areal Flood Advisory	JKL	Johnson	8 hr
Apr 4, 9:18 AM EDT	Areal Flood Warning	JKL	Estill	24 hr
Apr 4, 9:56 AM EDT	Areal Flood Advisory	JKL	Bath, Fleming, Rowan	8 hr
Apr 4, 3:07 PM EDT	River Flood Advisory	JKL	Lee	41 hr

Nearby

Freeze Warnings in Kentucky, 2015 Every freeze warning in 2015

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.