Alert archive / Indiana / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Indianapolis, IN

June 12, 2021Marion County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Jun 12, 2021, 11:15 PM EDT for Marion 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: Jun 12, 2021, 11:15 PM EDT (03:15 UTC)
Expired: Jun 13, 2021, 2:15 AM EDT
In force: 3 hr
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Flood severity: None

County Marion County, IN

The radar

The Indianapolis radar (KIND), 26 km from the middle of the area, began a volume at 03:18 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
Jun 13, 12:25 AM EDT	FLASH FLOOD	2 Wsw Warren Park, IN	VIDEO RECEIVED VIA SOCIAL MEDIA SHOWING WATER FLOWING OVER A ROAD IN IRVINGTON.

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.3 hours before the alert went out and 190 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: 647 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1794 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

537 
WGUS53 KIND 130315
FFWIND
INC097-130615-
/O.NEW.KIND.FF.W.0003.210613T0315Z-210613T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Indianapolis IN
1115 PM EDT Sat Jun 12 2021

The National Weather Service in Indianapolis has issued a

* Flash Flood Warning for...
  Southeastern Marion County in central Indiana...

* Until 215 AM EDT.

* At 1115 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 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...
  Indianapolis, Lawrence, Beech Grove, Cumberland and Warren Park.

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 3964 8595 3967 8611 3986 8612 3984 8595
      3981 8595 3980 8595 3977 8595 3974 8595
      3972 8595 3970 8595 3967 8595

FLASH FLOOD...RADAR INDICATED

$$

Ryan

1 follow-up statement

382 
WGUS73 KIND 130516
FFSIND

Flash Flood Statement
National Weather Service Indianapolis IN
116 AM EDT Sun Jun 13 2021

INC097-130615-
/O.CON.KIND.FF.W.0003.000000T0000Z-210613T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion IN-
116 AM EDT Sun Jun 13 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT EARLY THIS 
MORNING FOR SOUTHEASTERN MARION COUNTY...

At 116 AM EDT, isolated flash flooding is ongoing in eastern 
Indianapolis. Between 1.5 and 2.5 inches of rain have fallen. Flash 
flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Public reported.

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...
  Indianapolis, Lawrence, Beech Grove, Cumberland and Warren Park.

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 3964 8595 3967 8611 3986 8612 3984 8595
      3981 8595 3980 8595 3977 8595 3974 8595
      3972 8595 3970 8595 3967 8595

FLASH FLOOD...OBSERVED

$$

AW

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 12, 8:28 PM EDT	Special Weather Statement	IND	Clinton	32 min
Jun 12, 8:41 PM EDT	Special Weather Statement	IND	Shelby	34 min
Jun 12, 8:57 PM EDT	Special Weather Statement	IND	Madison	33 min
Jun 12, 9:08 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry, Madison	37 min
Jun 12, 9:23 PM EDT	Special Weather Statement	IND	Boone, Montgomery	37 min
Jun 12, 9:34 PM EDT	Special Weather Statement	IND	Hancock, Henry, Randolph	26 min
Jun 12, 9:51 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Henry, Madison, Rush	24 min
Jun 12, 10:15 PM EDT	Special Weather Statement	IND	Hancock, Henry, Rush, Shelby	45 min
Jun 12, 10:16 PM EDT	Special Weather Statement	IND	Randolph	29 min
Jun 12, 10:27 PM EDT	Severe Thunderstorm Warning	IND	Randolph	33 min
Jun 12, 10:32 PM EDT	Flash Flood Warning	IND	Randolph	3 hr
Jun 12, 10:40 PM EDT	Special Weather Statement	IND	Marion	35 min
Jun 12, 10:43 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Johnson, Marion	32 min
Jun 12, 10:55 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Shelby	23 min
Jun 12, 11:23 PM EDT	Special Weather Statement	IND	Johnson, Marion, Shelby	37 min
Jun 13, 8:41 AM EDT	River Flood Warning	IND	Delaware, Randolph	3 hr

Nearby

Flash Flood Warnings in Indiana, 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.