Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 56, NWS Jackson, KY

July 30, 20215 counties in Kentucky

NWS Jackson, KY issued this flash flood warning at Jul 30, 2021, 4:18 AM EDT for 5 counties in Kentucky. It was in force for 4 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 30, 2021, 4:18 AM EDT (08:18 UTC)
Expired: Jul 30, 2021, 7:58 AM EDT
In force: 4 hr
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Flood severity: None

Counties Knox County, KY, Laurel County, KY, Pulaski County, KY, Rockcastle County, KY, Whitley County, KY

The radar

The Jackson,KY radar (KJKL), 111 km from the middle of the area, began a volume at 08:17 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.

What was reported inside it

Time	Report	Where	Remark
Jul 30, 7:00 AM EDT	HEAVY RAIN 2.35	Brodhead 7.3 Ssw, KY
Jul 30, 7:00 AM EDT	HEAVY RAIN 2.76	Somerset 15.2 Ese, KY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 8.3 hours before the alert went out and 224 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: 1874 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1447 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

984 
WGUS53 KJKL 300818
FFWJKL
KYC121-125-199-203-235-301215-
/O.NEW.KJKL.FF.W.0056.210730T0818Z-210730T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson KY
418 AM EDT Fri Jul 30 2021

The National Weather Service in Jackson has issued a

* Flash Flood Warning for...
  Southwestern Laurel County in south central Kentucky...
  Eastern Pulaski County in south central Kentucky...
  Southwestern Rockcastle County in south central Kentucky...
  Northwestern Whitley County in south central Kentucky...
  West Central Knox County in southeastern Kentucky...

* Until 815 AM EDT.

* At 418 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Somerset, Science Hill, Bent, Mount Victory, Grade, Billows, 
  Shopville, Bloss, Valley Oak, Rockcastle Springs, Ruth, Bunch, 
  Baldrock, Huxley, Green, Dabney, Corbin, North Corbin, Holly Bay 
  Rec. Area and Woodstock.

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 3733 8450 3735 8450 3693 8395 3691 8430
      3693 8431 3695 8430 3694 8436 3696 8436
      3695 8439 3722 8475 3736 8456

FLASH FLOOD...RADAR INDICATED

$$

RAY

2 follow-up statements

553 
WGUS73 KJKL 300955
FFSJKL

Flash Flood Statement
National Weather Service Jackson KY
555 AM EDT Fri Jul 30 2021

KYC121-125-199-203-235-301215-
/O.CON.KJKL.FF.W.0056.000000T0000Z-210730T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Knox KY-Laurel KY-Pulaski KY-Rockcastle KY-Whitley KY-
555 AM EDT Fri Jul 30 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM EDT THIS 
MORNING FOR SOUTHWESTERN LAUREL, EASTERN PULASKI, SOUTHWESTERN 
ROCKCASTLE, NORTHWESTERN WHITLEY AND WEST CENTRAL KNOX COUNTIES...

At 555 AM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 3 inches of rain have 
fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in 
the warned area. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Somerset, Science Hill, Bent, Mount Victory, Grade, Billows, 
  Shopville, Bloss, Valley Oak, Rockcastle Springs, Ruth, Bunch, 
  Baldrock, Huxley, Level Green, Dabney, Bobtown, Holly Bay Rec. 
  Area and Woodstock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3733 8450 3735 8450 3693 8395 3691 8430
      3693 8431 3695 8430 3694 8436 3696 8436
      3695 8439 3722 8475 3736 8456

FLASH FLOOD...RADAR INDICATED

$$

RAY

778 
WGUS73 KJKL 301158
FFSJKL

Flash Flood Statement
National Weather Service Jackson KY
758 AM EDT Fri Jul 30 2021

KYC121-125-199-203-235-301208-
/O.CAN.KJKL.FF.W.0056.000000T0000Z-210730T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Knox KY-Laurel KY-Pulaski KY-Rockcastle KY-Whitley KY-
758 AM EDT Fri Jul 30 2021

...FLASH FLOOD WARNING FOR SOUTHWESTERN LAUREL, EASTERN PULASKI, 
SOUTHWESTERN ROCKCASTLE, NORTHWESTERN WHITLEY AND WEST CENTRAL KNOX 
COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

LAT...LON 3733 8450 3735 8450 3693 8395 3691 8430
      3693 8431 3695 8430 3694 8436 3696 8436
      3695 8439 3722 8475 3736 8456

$$

RAY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 9:55 PM EDT	Special Weather Statement	JKL	Rowan	35 min
Jul 29, 10:03 PM EDT	Severe Thunderstorm Warning	JKL	Rowan	27 min
Jul 29, 10:25 PM EDT	Severe Thunderstorm Warning	JKL	Elliott, Rowan	35 min
Jul 29, 10:44 PM EDT	Severe Thunderstorm Warning	JKL	Elliott, Morgan, Rowan	31 min
Jul 29, 10:53 PM EDT	Areal Flood Advisory	JKL	Elliott, Fleming, Rowan	3 hr
Jul 29, 11:15 PM EDT	Special Weather Statement	JKL	Elliott, Johnson, Magoffin, Morgan, Wolfe	30 min
Jul 29, 11:23 PM EDT	Special Weather Statement	JKL	Bath, Fleming, Rowan	37 min
Jul 29, 11:32 PM EDT	Areal Flood Advisory	JKL	Bath, Elliott, Fleming, Morgan, Rowan	3 hr
Jul 29, 11:43 PM EDT	Flash Flood Warning	JKL	Bath, Fleming, Menifee, Morgan, Rowan	4 hr
Jul 30, 12:23 AM EDT	Special Weather Statement	JKL	Breathitt, Wolfe	52 min
Jul 30, 12:24 AM EDT	Flash Flood Warning	JKL	Bath, Magoffin, Menifee, Montgomery, Morgan, Wolfe	4 hr
Jul 30, 12:25 AM EDT	Special Weather Statement	JKL	Menifee, Montgomery, Wolfe	50 min
Jul 30, 12:36 AM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Knott, Magoffin, Perry	39 min
Jul 30, 12:45 AM EDT	Special Weather Statement	JKL	Perry	45 min
Jul 30, 12:59 AM EDT	Flash Flood Warning	JKL	Breathitt, Magoffin	4 hr
Jul 30, 1:05 AM EDT	Special Weather Statement	JKL	Breathitt, Knott	40 min
Jul 30, 1:26 AM EDT	Special Weather Statement	JKL	Leslie, Perry	49 min
Jul 30, 1:30 AM EDT	Severe Thunderstorm Warning	JKL	Leslie, Perry	45 min
Jul 30, 1:33 AM EDT	Flash Flood Warning	JKL	Breathitt, Estill, Lee, Montgomery, Owsley, Perry and 2 more	4 hr
Jul 30, 1:37 AM EDT	Special Weather Statement	JKL	Montgomery, Powell	53 min
Jul 30, 1:55 AM EDT	Flash Flood Warning	JKL	Leslie, Perry	4 hr
Jul 30, 2:06 AM EDT	Special Weather Statement	JKL	Harlan	39 min
Jul 30, 2:08 AM EDT	Special Weather Statement	JKL	Estill, Jackson	52 min
Jul 30, 2:23 AM EDT	Special Weather Statement	JKL	Bell, Clay	52 min
Jul 30, 2:35 AM EDT	Flash Flood Warning	JKL	Clay, Estill, Jackson, Lee, Leslie, Owsley	4 hr
Jul 30, 2:41 AM EDT	Special Weather Statement	JKL	Jackson, Laurel, Rockcastle	49 min
Jul 30, 3:04 AM EDT	Special Weather Statement	JKL	Bell, Clay, Knox	41 min
Jul 30, 3:12 AM EDT	Special Weather Statement	JKL	Pulaski, Rockcastle	48 min
Jul 30, 3:23 AM EDT	Areal Flood Advisory	JKL	Clay, Jackson, Laurel, Rockcastle	4 hr
Jul 30, 3:30 AM EDT	Areal Flood Warning	JKL	Bath, Fleming, Menifee, Morgan, Rowan	6 hr
Jul 30, 3:32 AM EDT	Special Weather Statement	JKL	Knox, Laurel	43 min
Jul 30, 3:56 AM EDT	Special Weather Statement	JKL	Laurel, McCreary, Pulaski, Whitley	64 min
Jul 30, 4:03 AM EDT	Areal Flood Advisory	JKL	Laurel, Pulaski	4 hr
Jul 30, 4:11 AM EDT	Severe Thunderstorm Warning	JKL	Laurel, McCreary, Pulaski, Rockcastle, Whitley	49 min
Jul 30, 4:16 AM EDT	Tornado Warning	JKL	McCreary, Whitley	29 min
Jul 30, 4:21 AM EDT	Areal Flood Warning	JKL	Bath, Magoffin, Menifee, Montgomery, Morgan, Wolfe	3 hr
Jul 30, 4:44 AM EDT	Special Weather Statement	JKL	McCreary, Pulaski, Wayne, Whitley	61 min
Jul 30, 4:54 AM EDT	Areal Flood Advisory	JKL	McCreary, Wayne, Whitley	3 hr
Jul 30, 4:54 AM EDT	Severe Thunderstorm Warning	JKL	Bell, McCreary, Whitley	51 min
Jul 30, 5:16 AM EDT	Areal Flood Warning	JKL	Breathitt, Estill, Lee, Montgomery, Owsley, Powell and 1 more	4 hr
Jul 30, 5:22 AM EDT	Special Weather Statement	JKL	McCreary, Wayne	38 min
Jul 30, 6:35 AM EDT	River Flood Advisory	JKL	Estill, Powell	24 hr
Jul 30, 7:14 AM EDT	Areal Flood Warning	JKL	Bath, Menifee, Montgomery, Morgan, Wolfe	4 hr
Jul 30, 7:58 AM EDT	Areal Flood Warning	JKL	Knox, Laurel, Pulaski, Rockcastle, Whitley	86 min

Nearby

Flash Flood Warnings in Kentucky, 2021 Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.