Alert archive / Indiana / Flash Flood Warnings in 2020

Flash Flood Warning 13, NWS Louisville, KY

March 20, 2020Dubois County, Orange County, Indiana

NWS Louisville, KY issued this flash flood warning at Mar 20, 2020, 3:24 AM EDT for Dubois County, Orange County, Indiana. It was in force for 3 hr. 1 report 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: Mar 20, 2020, 3:24 AM EDT (07:24 UTC)
Expired: Mar 20, 2020, 6:10 AM EDT
In force: 3 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Dubois County, IN, Orange County, IN

The radar

The Evansville,IN radar (KVWX), 81 km from the middle of the area, began a volume at 07:25 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
Mar 20, 3:40 AM EDT	FLASH FLOOD	Dubois, IN	CAR STUCK IN WATER.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 7.4 hours before the alert went out and 242 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: 26 J/kg
Mixed-layer CIN: -292 J/kg
Mixed-layer LCL: 982 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 309 m²/s²
0-3 km storm-relative helicity: 235 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

379 
WGUS53 KLMK 200724
FFWLMK
INC037-117-201030-
/O.NEW.KLMK.FF.W.0013.200320T0724Z-200320T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Louisville KY
324 AM EDT Fri Mar 20 2020

The National Weather Service in Louisville has issued a

* Flash Flood Warning for...
  Dubois County in south central Indiana...
  Western Orange County in south central Indiana...

* Until 630 AM EDT.

* At 324 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Earlier rainfall has made the 
  soil susceptible to flash flooding. 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...
  Jasper, Huntingburg, Ferdinand, French Lick, Orangeville, Holland,
  West Baden Springs, Birdseye, Dubois and Hillham.

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 3851 8707 3850 8706 3851 8705 3851 8700
      3849 8695 3851 8693 3850 8688 3853 8683
      3853 8668 3869 8668 3869 8650 3842 8650
      3840 8652 3839 8668 3825 8668 3825 8679
      3822 8679 3822 8707

FLASH FLOOD...RADAR INDICATED

$$

RJS

1 follow-up statement

740 
WGUS73 KLMK 201010
FFSLMK

Flash Flood Statement
National Weather Service Louisville KY
610 AM EDT Fri Mar 20 2020

INC037-117-201020-
/O.CAN.KLMK.FF.W.0013.000000T0000Z-200320T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dubois IN-Orange IN-
610 AM EDT Fri Mar 20 2020

...THE FLASH FLOOD WARNING FOR DUBOIS AND WESTERN ORANGE 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 3851 8707 3850 8706 3851 8705 3851 8700
      3849 8695 3851 8693 3850 8688 3853 8683
      3853 8668 3869 8668 3869 8650 3842 8650
      3840 8652 3839 8668 3825 8668 3825 8679
      3822 8679 3822 8707

$$

RJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 19, 8:18 PM EDT	Special Weather Statement	LMK	Dubois	27 min
Mar 19, 8:32 PM EDT	Flash Flood Warning	LMK	Dubois	2 hr
Mar 19, 8:55 PM EDT	Special Weather Statement	LMK	Orange	50 min
Mar 19, 9:39 PM EDT	Areal Flood Advisory	LMK	Orange	3 hr
Mar 19, 9:43 PM EDT	Special Weather Statement	LMK	Scott, Washington	47 min
Mar 19, 10:52 PM EDT	Special Weather Statement	LMK	Clark	23 min
Mar 20, 3:15 AM EDT	Special Weather Statement	LMK	Crawford, Dubois, Orange	30 min
Mar 20, 3:32 AM EDT	Severe Thunderstorm Warning	LMK	Dubois, Orange	28 min
Mar 20, 3:50 AM EDT	Severe Thunderstorm Warning	LMK	Washington	25 min
Mar 20, 4:29 AM EDT	Special Weather Statement	LMK	Jefferson	16 min
Mar 20, 4:33 AM EDT	Severe Thunderstorm Warning	LMK	Jefferson	12 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.