Alert archive / Kentucky / Areal Flood Advisories in 2017

Areal Flood Advisory 21, NWS Jackson, KY

May 19, 2017Pulaski County, Rockcastle County, Kentucky

NWS Jackson, KY issued this areal flood advisory at May 19, 2017, 8:32 AM EDT for Pulaski County, Rockcastle County, Kentucky. It was in force for 118 min.

The area

The counties it named.

The facts

Issued: May 19, 2017, 8:32 AM EDT (12:32 UTC)
Expired: May 19, 2017, 10:30 AM EDT
In force: 118 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon

Counties Pulaski County, KY, Rockcastle County, KY

The radar

The Jackson,KY radar (KJKL), 108 km from the middle of the area, began a volume at 12:31 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 12:00Z, 0.5 hours before the alert went out and 228 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: 675 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 747 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory 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 areal flood advisory went out at May 19, 8:13 AM EDT, 19 minutes earlier.

Area forecast discussion, May 19, 8:13 AM EDT, 19 minutes before

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Hazardous weather outlook, May 19, 4:11 AM EDT, 4 hours 21 minutes before

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In the hours before

Special weather statement, May 19, 7:01 AM EDT, 1 hour 31 minutes before

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Special weather statement, May 19, 7:19 AM EDT, 1 hour 13 minutes before

Special Weather Statement
National Weather Service JACKSON KY
719 AM EDT FRI MAY 19 2017

KYZ068-069-111-114-191145-
Jackson-Lee-Owsley-Rockcastle-
719 AM EDT FRI MAY 19 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN OWSLEY...JACKSON...
EAST CENTRAL ROCKCASTLE AND SOUTHWESTERN LEE COUNTIES...

At 719 AM EDT, a strong thunderstorm was located over Dango, or 8
miles southwest of McKee, moving east at 35 mph.

Winds in excess of 40 mph and small hail are possible with this
storm.

Locations impacted include...
McKee, Carico, Travellers Rest, Blake, Robinet, Zekes Point, Shop
Branch, Maulden, Mummie, Tyner, Privett, Bradshaw, Horse Lick,
Earnestville, Hurley, Settle Store, Delvinta, Moores Creek, Parrot
and Johnetta.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3742 8423 3754 8379 3734 8372 3735 8378
      3733 8379 3733 8383 3730 8387 3727 8406
      3728 8405 3730 8410 3732 8410 3734 8412
      3731 8414 3730 8419
TIME...MOT...LOC 1119Z 255DEG 29KT 3736 8411

GEOGERIAN

Special weather statement, May 19, 7:49 AM EDT, 43 minutes before

Special Weather Statement
National Weather Service JACKSON KY
749 AM EDT FRI MAY 19 2017

KYZ119-120-191215-
Martin-Pike-
749 AM EDT FRI MAY 19 2017

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MARTIN AND NORTHWESTERN
PIKE COUNTIES...

At 748 AM EDT, a strong thunderstorm was located over Heenan, or 12
miles west of Williamson, moving east at 35 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Forest Hills, Rural, Moree, Gulnare, Turkey Creek, Belfry, Hatfield
Station, Heisey, Coalpoint, Heenan, Whitepost, Pleasant, Conder,
Sidney, Oppy, Piso, Laura, Varney, McClure and Jarad.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3762 8219 3760 8255 3768 8258 3768 8256
      3769 8259 3774 8261 3781 8238 3776 8233
      3776 8231 3774 8233 3770 8230 3767 8230
      3765 8223 3763 8222 3763 8219 3765 8218
      3763 8217
TIME...MOT...LOC 1148Z 256DEG 29KT 3768 8250

GEOGERIAN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 7:01 AM EDT	Special Weather Statement	JKL	Magoffin	29 min
May 19, 7:19 AM EDT	Special Weather Statement	JKL	Jackson	26 min
May 19, 7:49 AM EDT	Special Weather Statement	JKL	Martin	26 min
May 19, 9:17 AM EDT	Flash Flood Warning	JKL	Pulaski	3 hr
May 19, 10:14 AM EDT	Special Weather Statement	JKL	Clay, Laurel, Owsley	31 min
May 19, 10:18 AM EDT	Areal Flood Advisory	JKL	Floyd, Pike	3 hr
May 19, 10:37 AM EDT	Flash Flood Warning	JKL	Floyd, Pike	3 hr
May 19, 10:44 AM EDT	Areal Flood Advisory	JKL	Breathitt, Floyd, Knott, Magoffin, Perry	3 hr
May 19, 10:51 AM EDT	Flash Flood Warning	JKL	Knott, Perry	3 hr
May 19, 7:23 PM EDT	Special Weather Statement	JKL	Fleming	52 min
May 19, 7:51 PM EDT	Tornado Warning	JKL	Fleming, Rowan	24 min

Nearby

Areal Flood Advisories in Kentucky, 2017 Every areal flood advisory 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.