Alert archive / Indiana / Flash Flood Warnings in 2020

Flash Flood Warning 21, NWS Louisville, KY

June 4, 2020Clark County, Scott County, Washington County, Indiana

NWS Louisville, KY issued this flash flood warning at Jun 4, 2020, 5:42 PM EDT for Clark County, Scott County, Washington County, Indiana. 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: Jun 4, 2020, 5:42 PM EDT (21:42 UTC)
Expired: Jun 4, 2020, 8:30 PM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Clark County, IN, Scott County, IN, Washington County, IN

The radar

The Louisville radar (KLVX), 72 km from the middle of the area, began a volume at 21:43 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, 9.7 hours before the alert went out and 202 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: 208 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1207 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

184 
WGUS53 KLMK 042142
FFWLMK
INC019-143-175-050045-
/O.NEW.KLMK.FF.W.0021.200604T2142Z-200605T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
542 PM EDT Thu Jun 4 2020

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  North central Clark County in south central Indiana...
  Southwestern Scott County in south central Indiana...
  Northeastern Washington County in south central Indiana...

* Until 845 PM EDT.

* At 541 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is ongoing or expected to begin
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Salem, Blue River, Little York, New Philadelphia, Henryville,
  Underwood, Farabee, South Boston, Canton and New Liberty.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3862 8586 3861 8575 3853 8574 3853 8612
      3870 8606 3873 8588

FLASH FLOOD...RADAR INDICATED

$$

AMS

2 follow-up statements

234 
WGUS73 KLMK 042308
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
708 PM EDT Thu Jun 4 2020

INC019-143-175-050045-
/O.CON.KLMK.FF.W.0021.000000T0000Z-200605T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark IN-Scott IN-Washington IN-
708 PM EDT Thu Jun 4 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR
NORTH CENTRAL CLARK...SOUTHWESTERN SCOTT AND NORTHEASTERN WASHINGTON
COUNTIES...

At 706 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain near the warned area. Up to 2.5 inches of rain have already 
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flooding of small creeks and streams, urban areas, 
         highways, streets and underpasses as well as other drainage 
         and low lying areas.

Some locations that will experience flooding include...
Salem, Blue River, Little York, New Philadelphia, Henryville,
Underwood, Farabee, South Boston, Canton and New Liberty.

Additional rainfall amounts of up to 1 inch are possible in the 
warned area as storms continue to move across the area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3862 8586 3861 8575 3853 8574 3853 8612
      3870 8606 3873 8588

FLASH FLOOD...RADAR INDICATED

$$

AMS

164 
WGUS73 KLMK 050030
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
830 PM EDT Thu Jun 4 2020

INC019-143-175-050040-
/O.CAN.KLMK.FF.W.0021.000000T0000Z-200605T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark IN-Scott IN-Washington IN-
830 PM EDT Thu Jun 4 2020

...THE FLASH FLOOD WARNING FOR NORTH CENTRAL CLARK...SOUTHWESTERN
SCOTT AND NORTHEASTERN WASHINGTON COUNTIES IS CANCELLED...

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

LAT...LON 3862 8586 3861 8575 3853 8574 3853 8612
      3870 8606 3873 8588

$$

AMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 3:52 PM EDT	Special Weather Statement	LMK	Scott	23 min
Jun 4, 4:14 PM EDT	Special Weather Statement	LMK	Scott	31 min
Jun 4, 4:27 PM EDT	Areal Flood Advisory	LMK	Clark, Scott, Washington	2 hr
Jun 4, 4:40 PM EDT	Special Weather Statement	LMK	Clark	35 min
Jun 4, 4:42 PM EDT	Special Weather Statement	LMK	Dubois	33 min
Jun 4, 4:51 PM EDT	Special Weather Statement	LMK	Washington	24 min
Jun 4, 5:07 PM EDT	Special Weather Statement	LMK	Orange	23 min
Jun 4, 5:15 PM EDT	Special Weather Statement	LMK	Washington	30 min
Jun 4, 5:30 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Orange	30 min
Jun 4, 5:51 PM EDT	Special Weather Statement	LMK	Floyd	24 min
Jun 4, 6:15 PM EDT	Areal Flood Advisory	LMK	Clark, Floyd, Harrison, Washington	3 hr
Jun 4, 7:24 PM EDT	Special Weather Statement	LMK	Clark	36 min

Nearby

Flash Flood Warnings in Indiana, 2020 Every flash flood warning in 2020

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.