Alert archive / Kentucky / Flash Flood Warnings in 2017

Flash Flood Warning 8, NWS Jackson, KY

May 20, 2017Breathitt County, Perry County, Kentucky

NWS Jackson, KY issued this flash flood warning at May 20, 2017, 8:32 PM EDT for Breathitt County, Perry County, Kentucky. It was in force for 4 hr. 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, 8:32 PM EDT (00:32 UTC)
Expired
May 21, 2017, 12:30 AM EDT
In force
4 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

Counties Breathitt County, KY, Perry County, KY

The radar

The Jackson,KY radar (KJKL), 19 km from the middle of the area, began a volume at 00:31 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.5 hours before the alert went out and 220 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2017-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 919 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2017-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

329 
WGUS53 KJKL 210032
FFWJKL
KYC025-193-210430-
/O.NEW.KJKL.FF.W.0008.170521T0032Z-170521T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service JACKSON KY
832 PM EDT SAT MAY 20 2017

The National Weather Service in JACKSON KY has issued a

* Flash Flood Warning for...
  North central Perry County in southeastern Kentucky...
  Eastern Breathitt County in southeastern Kentucky...

* Until 1230 AM EDT

* At 831 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to two inches of rain has 
  already fallen according to radar estimates in the vicinity of 
  Ned, Noble, Rowdy, and Hardshell. Flash flooding is expected to 
  begin shortly.

* Some locations that will experience flooding include...
  Decoy, Sikes, Evanston, Hardshell, Noble, Dice, Lunah, Ned, Guage,
  Lambric, Daisydell, Camp Lewis and Rowdy.

LAT...LON 3739 8331 3764 8321 3764 8317 3761 8313
      3763 8309 3759 8306 3758 8301 3755 8302
      3754 8300 3751 8303 3752 8305 3752 8310
      3750 8309 3746 8313 3743 8313 3735 8321

$$

JP
2 follow-up statements
399 
WGUS73 KJKL 210334
FFSJKL

Flash Flood Statement
National Weather Service JACKSON KY
1134 PM EDT SAT MAY 20 2017

KYC025-193-210430-
/O.CON.KJKL.FF.W.0008.000000T0000Z-170521T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Perry KY-Breathitt KY-
1134 PM EDT SAT MAY 20 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
NORTH CENTRAL PERRY AND EASTERN BREATHITT COUNTIES...

At 1133 PM EDT, Doppler radar indicated heavy rain has falled across 
the warned area.  Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Decoy, Sikes, Evanston, Hardshell, Noble, Dice, Lunah, Ned, Guage,
Lambric, Daisydell, Camp Lewis and Rowdy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3739 8331 3764 8321 3764 8317 3761 8313
      3763 8309 3759 8306 3758 8301 3755 8302
      3754 8300 3751 8303 3752 8305 3752 8310
      3750 8309 3746 8313 3743 8313 3735 8321

$$

KAS
893 
WGUS73 KJKL 210424
FFSJKL

Flash Flood Statement
National Weather Service JACKSON KY
1224 AM EDT SUN MAY 21 2017

KYC025-193-210434-
/O.EXP.KJKL.FF.W.0008.000000T0000Z-170521T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Perry KY-Breathitt KY-
1224 AM EDT SUN MAY 21 2017

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL PERRY AND EASTERN
BREATHITT COUNTIES WILL EXPIRE AT 1230 AM EDT...

The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed any
remaining road closures.

LAT...LON 3739 8331 3764 8321 3764 8317 3761 8313
      3763 8309 3759 8306 3758 8301 3755 8302
      3754 8300 3751 8303 3752 8305 3752 8310
      3750 8309 3746 8313 3743 8313 3735 8321

$$

KAS

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 8:09 PM EDTSevere Thunderstorm WarningJKLBreathitt, Knott, Perry51 min
May 20, 8:44 PM EDTSpecial Weather StatementJKLMagoffin46 min
May 20, 8:49 PM EDTSevere Thunderstorm WarningJKLBreathitt, Floyd, Johnson, Magoffin41 min
May 20, 9:08 PM EDTSevere Thunderstorm WarningJKLFloyd, Johnson, Knott, Letcher, Magoffin, Pike37 min
May 20, 9:34 PM EDTSevere Thunderstorm WarningJKLJohnson26 min
May 20, 9:36 PM EDTSpecial Weather StatementJKLLetcher39 min
May 20, 9:49 PM EDTFlash Flood WarningJKLJohnson, Magoffin3 hr
May 20, 9:53 PM EDTAreal Flood AdvisoryJKLJohnson3 hr
May 20, 10:16 PM EDTSpecial Weather StatementJKLFloyd, Knott44 min
May 20, 10:26 PM EDTSpecial Weather StatementJKLBath, Fleming, Menifee, Montgomery49 min
May 20, 10:34 PM EDTSpecial Weather StatementJKLEstill, Lee, Powell41 min
May 20, 10:40 PM EDTAreal Flood AdvisoryJKLFloyd, Knott, Letcher3 hr
May 20, 11:08 PM EDTSpecial Weather StatementJKLBell37 min
May 20, 11:12 PM EDTSpecial Weather StatementJKLClay33 min
May 20, 11:27 PM EDTSpecial Weather StatementJKLLee, Owsley33 min
May 20, 11:53 PM EDTAreal Flood AdvisoryJKLBreathitt, Clay, Knox, Lee, Owsley, Wolfe112 min
May 20, 11:53 PM EDTSpecial Weather StatementJKLClay37 min
May 21, 12:00 AM EDTSpecial Weather StatementJKLOwsley30 min
May 21, 12:19 AM EDTSpecial Weather StatementJKLMenifee, Wolfe26 min
May 21, 12:28 AM EDTAreal Flood AdvisoryJKLBreathitt, Wolfe2 hr
May 21, 12:39 AM EDTAreal Flood WarningJKLMagoffin6 hr
May 21, 6:54 PM EDTSpecial Weather StatementJKLBath, Fleming36 min
May 21, 7:35 PM EDTSpecial Weather StatementJKLBath, Fleming, Rowan25 min

Nearby

Flash Flood Warnings in Kentucky, 2017Every flash flood warning 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.