Alert archive / Kentucky / Winter Storm Warnings in 2019

Winter Storm Warning 1, NWS Jackson, KY

December 1, 2019Harlan County, Letcher County, Kentucky

NWS Jackson, KY issued this winter storm warning at Dec 1, 2019, 2:50 PM EST for Harlan County, Letcher County, Kentucky. It took effect at Dec 2, 2019, 1:00 AM EST. It was in force for 21 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: Dec 1, 2019, 2:50 PM EST (19:50 UTC)
In effect from: Dec 2, 2019, 1:00 AM EST
Expired: Dec 2, 2019, 10:23 PM EST
In force: 21 hr
Issued by: NWS Jackson, KY

Counties Harlan County, KY, Letcher County, KY

The radar

The Jackson,KY radar (KJKL), 71 km from the middle of the area, began a volume at 19:53 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, 7.8 hours before the alert went out and 298 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: 549 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 552 m²/s²
0-3 km storm-relative helicity: 630 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 Jackson, KY wrote its last area forecast discussion before this winter storm warning went out at Dec 1, 12:55 PM EST, 1 hour 55 minutes earlier.

Area forecast discussion, Dec 1, 12:55 PM EST, 1 hour 55 minutes before

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Hazardous weather outlook, Dec 1, 4:52 AM EST, 9 hours 58 minutes before

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In the hours before

Local storm report, Dec 1, 11:35 AM EST, 3 hours 15 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
Nov 30, 7:56 PM EST	River Flood Advisory	JKL	Estill, Powell	54 hr
Nov 30, 8:59 PM EST	Areal Flood Advisory	JKL	Breathitt, Estill, Jackson, Knott, Lee, Menifee and 5 more	11 hr
Nov 30, 9:07 PM EST	Areal Flood Advisory	JKL	Bell, Clay, Harlan, Knox, Laurel, Leslie and 6 more	11 hr
Nov 30, 10:00 PM EST	River Flood Warning	JKL	Estill	42 hr
Nov 30, 10:32 PM EST	River Flood Advisory	JKL	Lee	48 hr
Dec 1, 5:32 AM EST	River Flood Advisory	JKL	Owsley	25 hr
Dec 1, 2:50 PM EST	Winter Weather Advisory	JKL	Bell, Breathitt, Clay, Elliott, Estill, Floyd and 22 more	30 hr

Nearby

Winter Storm Warnings in Kentucky, 2019 Every winter storm warning in 2019

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.