Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 61, NWS Jackson, KY

August 19, 2021Magoffin County, Kentucky

NWS Jackson, KY issued this flash flood warning at Aug 19, 2021, 10:37 AM EDT for Magoffin 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
Aug 19, 2021, 10:37 AM EDT (14:37 UTC)
Expired
Aug 19, 2021, 1:45 PM EDT
In force
3 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

County Magoffin County, KY

The radar

The Jackson,KY radar (KJKL), 26 km from the middle of the area, began a volume at 14:41 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, 2.6 hours before the alert went out and 191 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 2021-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 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 2021-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
33 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
867 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

964 
WGUS53 KJKL 191437
FFWJKL
KYC153-191745-
/O.NEW.KJKL.FF.W.0061.210819T1437Z-210819T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson KY
1037 AM EDT Thu Aug 19 2021

The National Weather Service in Jackson has issued a

* Flash Flood Warning for...
  Northwestern Magoffin County in southeastern Kentucky...

* Until 145 PM EDT.

* At 1037 AM EDT, weather radar indicated heavy rain moving through 
  the warned area. Up to 3 inches of rain have likely fallen. Flash 
  flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by heavy rain showers.

  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 may experience flash flooding include...
  Elsie, Wonnie, Bloomington, Patton, Gifford, Cisco, Kernie, 
  Bethanna, Licksburg, Tella, Harper, Orient, Plutarch, Hager, 
  Perlie, Lykins, Coon, Epson, Cyrus and Ever.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads. 
Most flood deaths occur in vehicles. Turn around, don't drown.

&&

LAT...LON 3771 8326 3772 8326 3773 8325 3774 8325
      3774 8324 3777 8327 3779 8324 3779 8323
      3781 8322 3785 8312 3786 8307 3786 8303
      3785 8302 3783 8301 3782 8301 3780 8302

FLASH FLOOD...RADAR INDICATED

$$

HAL
1 follow-up statement
915 
WGUS73 KJKL 191743
FFSJKL

Flash Flood Statement
National Weather Service Jackson KY
143 PM EDT Thu Aug 19 2021

KYC153-191753-
/O.EXP.KJKL.FF.W.0061.000000T0000Z-210819T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Magoffin KY-
143 PM EDT Thu Aug 19 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 145 PM EDT THIS AFTERNOON FOR 
NORTHWESTERN MAGOFFIN COUNTY...

Although heavy rain has tapered off, flooding is likely to continue 
to affect some locations. The Flash Flood Warning has been replaced 
with an area Flood Warning.

LAT...LON 3771 8326 3772 8326 3773 8325 3774 8325
      3774 8324 3777 8327 3779 8324 3779 8323
      3781 8322 3785 8312 3786 8307 3786 8303
      3785 8302 3783 8301 3782 8301 3780 8302

$$

HAL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 11:42 PM EDTRiver Flood AdvisoryJKLEstill5 hr
Aug 19, 2:37 AM EDTSpecial Weather StatementJKLWhitley38 min
Aug 19, 5:44 AM EDTRiver Flood AdvisoryJKLEstill, Powell12 hr
Aug 19, 9:46 AM EDTAreal Flood AdvisoryJKLEstill119 min
Aug 19, 9:54 AM EDTAreal Flood AdvisoryJKLMagoffin117 min
Aug 19, 10:15 AM EDTAreal Flood AdvisoryJKLEstill, Lee, Morgan, Powell, Wolfe3 hr
Aug 19, 10:47 AM EDTFlash Flood WarningJKLWolfe3 hr
Aug 19, 12:22 PM EDTAreal Flood AdvisoryJKLBath, Elliott, Menifee, Rowan3 hr
Aug 19, 12:45 PM EDTAreal Flood AdvisoryJKLEstill, Lee, Menifee, Powell, Wolfe3 hr
Aug 19, 1:00 PM EDTAreal Flood WarningJKLEstill8 hr
Aug 19, 1:40 PM EDTAreal Flood WarningJKLEstill, Lee, Magoffin, Powell, Wolfe2 hr
Aug 19, 1:53 PM EDTAreal Flood AdvisoryJKLPike4 hr
Aug 19, 2:34 PM EDTFlash Flood WarningJKLPike3 hr
Aug 19, 3:14 PM EDTRiver Flood AdvisoryJKLLee16 hr
Aug 19, 3:14 PM EDTRiver Flood AdvisoryJKLEstill21 hr
Aug 19, 5:12 PM EDTAreal Flood AdvisoryJKLPowell, Wolfe5 hr
Aug 19, 5:20 PM EDTDense Fog AdvisoryJKLBath, Bell, Breathitt, Clay, Elliott, Estill and 27 more17 hr
Aug 19, 5:52 PM EDTRiver Flood WarningJKLEstill, Powell45 hr

Nearby

Flash Flood Warnings in Kentucky, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.