Alert archive / Kentucky / Flash Flood Warnings in 2017

Flash Flood Warning 7, NWS Jackson, KY

May 19, 2017Knott County, Perry County, Kentucky

NWS Jackson, KY issued this flash flood warning at May 19, 2017, 10:51 AM EDT for Knott County, Perry County, Kentucky. It was in force for 3 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 19, 2017, 10:51 AM EDT (14:51 UTC)
Expired
May 19, 2017, 1:45 PM EDT
In force
3 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

Counties Knott County, KY, Perry County, KY

The radar

The Jackson,KY radar (KJKL), 32 km from the middle of the area, began a volume at 14:55 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 12:00Z, 2.9 hours before the alert went out and 238 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 12:00Z on 2017-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 387 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 12:00Z on 2017-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939Sfc1 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
387 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
1118 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

Open this sounding in Storm Lab

The text

As transmitted.

919 
WGUS53 KJKL 191451
FFWJKL
KYC119-193-191745-
/O.NEW.KJKL.FF.W.0007.170519T1451Z-170519T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service JACKSON KY
1051 AM EDT FRI MAY 19 2017

The National Weather Service in JACKSON KY has issued a

* Flash Flood Warning for...
  Northeastern Perry County in southeastern Kentucky...
  West central Knott County in southeastern Kentucky...

* Until 145 PM EDT

* At 1049 AM EDT, emergency management reported heavy rain and 
  instances of flash flooding across the warned area. Up to two 
  inches of rain have already fallen, with localized amounts above 
  two inches. More rain is expected over the next warned area.

* Some locations that will experience flooding include...
  Hazard, Hindman, Ritchie, Dice, Ary, Emmalena, Bearville, Tina,
  Vest, Carrie, Talcum, Bulan, Fisty and Dwarf.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive runoff from heavy rainfall will cause flooding of small 
creeks and streams, as well as other drainage areas and low lying 
spots.

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

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3743 8303 3733 8295 3726 8321 3736 8326

$$

JMW
1 follow-up statement
911 
WGUS73 KJKL 191744
FFSJKL

Flash Flood Statement
National Weather Service JACKSON KY
144 PM EDT FRI MAY 19 2017

KYC119-193-191754-
/O.EXP.KJKL.FF.W.0007.000000T0000Z-170519T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Perry KY-Knott KY-
144 PM EDT FRI MAY 19 2017

...THE FLASH FLOOD WARNING FOR NORTHEASTERN PERRY AND WEST CENTRAL
KNOTT COUNTIES WILL EXPIRE AT 145 PM EDT...

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

LAT...LON 3743 8303 3733 8295 3726 8321 3736 8326

$$

JMW

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 7:01 AM EDTSpecial Weather StatementJKLMagoffin29 min
May 19, 7:19 AM EDTSpecial Weather StatementJKLJackson26 min
May 19, 7:49 AM EDTSpecial Weather StatementJKLMartin26 min
May 19, 8:32 AM EDTAreal Flood AdvisoryJKLPulaski, Rockcastle118 min
May 19, 9:17 AM EDTFlash Flood WarningJKLPulaski3 hr
May 19, 10:14 AM EDTSpecial Weather StatementJKLClay, Laurel, Owsley31 min
May 19, 10:18 AM EDTAreal Flood AdvisoryJKLFloyd, Pike3 hr
May 19, 10:37 AM EDTFlash Flood WarningJKLFloyd, Pike3 hr
May 19, 10:44 AM EDTAreal Flood AdvisoryJKLBreathitt, Floyd, Knott, Magoffin, Perry3 hr
May 19, 7:23 PM EDTSpecial Weather StatementJKLFleming52 min
May 19, 7:51 PM EDTTornado WarningJKLFleming, Rowan24 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.