Alert archive / Kentucky / Freeze Warnings in 2020

Freeze Warning 1, NWS Jackson, KY

April 10, 202033 counties in Kentucky

NWS Jackson, KY issued this freeze warning at Apr 10, 2020, 4:05 AM EDT for 33 counties in Kentucky. It took effect at Apr 11, 2020, 1:00 AM EDT. It was in force for 9 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 10, 2020, 4:05 AM EDT (08:05 UTC)
In effect from: Apr 11, 2020, 1:00 AM EDT
Expired: Apr 11, 2020, 10:00 AM EDT
In force: 9 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 08:05 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.1 hours before the alert went out and 218 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: 1871 m above ground
0-6 km bulk shear: 109 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 99 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 9, 7:44 PM EDT, 8 hours 21 minutes earlier.

Area forecast discussion, Apr 9, 7:44 PM EDT, 8 hours 21 minutes before

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Hazardous weather outlook, Apr 9, 4:35 PM EDT, 11 hours 30 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 10, 2:57 AM EDT	Special Weather Statement	JKL	Breathitt, Floyd, Johnson, Knott, Leslie, Magoffin and 3 more	48 min
Apr 10, 3:45 AM EDT	Special Weather Statement	JKL	Harlan, Knott, Leslie, Letcher, Perry, Pike	45 min

Nearby

Freeze Warnings in Kentucky, 2020 Every freeze warning in 2020

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.