Alert archive / Kentucky / Special Weather Statements in 2017

Special Weather Statement, NWS Jackson, KY

May 20, 2017Clay County, Kentucky

NWS Jackson, KY issued this special weather statement at May 20, 2017, 11:12 PM EDT for Clay County, Kentucky. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 20, 2017, 11:12 PM EDT (03:12 UTC)
Expired: May 20, 2017, 11:45 PM EDT
In force: 33 min
Issued by: NWS Jackson, KY

County Clay County, KY

The radar

The Jackson,KY radar (KJKL), 69 km from the middle of the area, began a volume at 03:15 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, 3.2 hours before the alert went out and 264 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: 919 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 952 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 20, 10:56 PM EDT, 16 minutes earlier.

Area forecast discussion, May 20, 10:56 PM EDT, 16 minutes before

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Hazardous weather outlook, May 20, 6:59 PM EDT, 4 hours 13 minutes before

Hazardous Weather Outlook
National Weather Service Jackson KY
659 PM EDT Sat May 20 2017

KYZ044-050>052-058>060-069-104-106>120-220200-
Fleming-Montgomery-Bath-Rowan-Estill-Powell-Menifee-Jackson-
Elliott-Morgan-Johnson-Wolfe-Magoffin-Floyd-Lee-Breathitt-Knott-
Owsley-Perry-Clay-Leslie-Letcher-Martin-Pike-
Including the cities of Flemingsburg, Camargo, Jeffersonville,
Mount Sterling, Owingsville, Morehead, Irvine, Ravenna,
Clay City, Stanton, Frenchburg, McKee, Annville, Sandy Hook,
West Liberty, Paintsville, Campton, Salyersville, Prestonsburg,
Wheelwright, Beattyville, Jackson, Hindman, Pippa Passes,
Booneville, Hazard, Manchester, Hyden, Jenkins, Whitesburg, Inez,
Coal Run, Elkhorn City, Pikeville, and South Williamson
659 PM EDT Sat May 20 2017

This hazardous weather outlook is for portions of eastern Kentucky.

.DAY ONE...Tonight.

An isolated thunderstorm is expected through tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Thunderstorms will be possible from Sunday through late Sunday
night, and at times from Tuesday night through Friday.

Additionally, isolated flash flooding will be possible Sunday,
especially if storms pass repeatedly across the same location or
across areas that are already saturated from previous storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

KYZ068-079-080-083>088-220200-
Rockcastle-Pulaski-Laurel-Wayne-McCreary-Whitley-Knox-Bell-Harlan-
Including the cities of Brodhead, Mount Vernon, Burnside,
Somerset, London, Monticello, Stearns, Whitley City, Corbin,
Williamsburg, Barbourville, Middlesboro, Pineville, Cumberland,
and Harlan
659 PM EDT Sat May 20 2017

This hazardous weather outlook is for portions of eastern Kentucky.

.DAY ONE...Tonight.

A few thunderstorms are expected late tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Thunderstorms will be possible from Sunday through late Sunday
night, and at times from Tuesday night through Friday.

Additionally, isolated flash flooding will be possible Sunday,
especially if storms pass repeatedly across the same location or
across areas that are already saturated from previous storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

KAS

In the hours before

Local storm report, May 20, 10:42 PM EDT, 30 minutes before

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Local storm report, May 20, 10:49 PM EDT, 23 minutes before

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Local storm report, May 20, 11:00 PM EDT, 12 minutes before

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Local storm report, May 20, 11:03 PM EDT, 9 minutes before

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Special weather statement, May 20, 11:08 PM EDT, 4 minutes before

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Special weather statement, May 20, 11:12 PM EDT, 0 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
May 20, 8:09 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Knott, Perry	51 min
May 20, 8:32 PM EDT	Flash Flood Warning	JKL	Breathitt, Perry	4 hr
May 20, 8:44 PM EDT	Special Weather Statement	JKL	Magoffin	46 min
May 20, 8:49 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Floyd, Johnson, Magoffin	41 min
May 20, 9:08 PM EDT	Severe Thunderstorm Warning	JKL	Floyd, Johnson, Knott, Letcher, Magoffin, Pike	37 min
May 20, 9:34 PM EDT	Severe Thunderstorm Warning	JKL	Johnson	26 min
May 20, 9:36 PM EDT	Special Weather Statement	JKL	Letcher	39 min
May 20, 9:49 PM EDT	Flash Flood Warning	JKL	Johnson, Magoffin	3 hr
May 20, 9:53 PM EDT	Areal Flood Advisory	JKL	Johnson	3 hr
May 20, 10:16 PM EDT	Special Weather Statement	JKL	Floyd, Knott	44 min
May 20, 10:26 PM EDT	Special Weather Statement	JKL	Bath, Fleming, Menifee, Montgomery	49 min
May 20, 10:34 PM EDT	Special Weather Statement	JKL	Estill, Lee, Powell	41 min
May 20, 10:40 PM EDT	Areal Flood Advisory	JKL	Floyd, Knott, Letcher	3 hr
May 20, 11:08 PM EDT	Special Weather Statement	JKL	Bell	37 min
May 20, 11:27 PM EDT	Special Weather Statement	JKL	Lee, Owsley	33 min
May 20, 11:53 PM EDT	Areal Flood Advisory	JKL	Breathitt, Clay, Knox, Lee, Owsley, Wolfe	112 min
May 20, 11:53 PM EDT	Special Weather Statement	JKL	Clay	37 min
May 21, 12:00 AM EDT	Special Weather Statement	JKL	Owsley	30 min
May 21, 12:19 AM EDT	Special Weather Statement	JKL	Menifee, Wolfe	26 min
May 21, 12:28 AM EDT	Areal Flood Advisory	JKL	Breathitt, Wolfe	2 hr
May 21, 12:39 AM EDT	Areal Flood Warning	JKL	Magoffin	6 hr
May 21, 6:54 PM EDT	Special Weather Statement	JKL	Bath, Fleming	36 min
May 21, 7:35 PM EDT	Special Weather Statement	JKL	Bath, Fleming, Rowan	25 min

Nearby

Special Weather Statements in Kentucky, 2017 Every special weather statement in 2017

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.