Alert archive / Indiana / Flash Flood Warnings in 2017

Flash Flood Warning 17, NWS Indianapolis, IN

July 16, 2017Randolph County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Jul 16, 2017, 11:48 PM EDT for Randolph 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: Jul 16, 2017, 11:48 PM EDT (03:48 UTC)
Expired: Jul 17, 2017, 2:45 AM EDT
In force: 3 hr
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Flood severity: None

County Randolph County, IN

The radar

The Indianapolis radar (KIND), 111 km from the middle of the area, began a volume at 03:50 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 00:00Z, 3.8 hours before the alert went out and 126 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: 515 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1506 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

844 
WGUS53 KIND 170348
FFWIND
INC135-170645-
/O.NEW.KIND.FF.W.0017.170717T0348Z-170717T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Indianapolis IN
1148 PM EDT SUN JUL 16 2017

The National Weather Service in Indianapolis has issued a

* Flash Flood Warning for...
  Southern Randolph County in east central Indiana...

* Until 245 AM EDT

* At 1147 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Over three inches of rain have 
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Lynn, Losantville and Modoc. 

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 4000 8521 4007 8521 4005 8481 4001 8481

$$

50

2 follow-up statements

682 
WGUS73 KIND 170604
FFSIND

Flash Flood Statement
National Weather Service Indianapolis IN
204 AM EDT MON JUL 17 2017

INC135-170645-
/O.CON.KIND.FF.W.0017.000000T0000Z-170717T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Randolph IN-
204 AM EDT MON JUL 17 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 AM EDT FOR
SOUTHERN RANDOLPH COUNTY...

At 204 AM EDT, Doppler radar and automated rain gauges indicated up 
to three inches of rain has already fallen. 

Some locations that will experience flooding include...
Lynn, Losantville and Modoc. 

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.

Please report flooding to your local law enforcement agency when you
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 4000 8521 4007 8521 4005 8481 4001 8481

$$

MK

176 
WGUS73 KIND 170637
FFSIND

Flash Flood Statement
National Weather Service Indianapolis IN
237 AM EDT MON JUL 17 2017

INC135-170647-
/O.EXP.KIND.FF.W.0017.000000T0000Z-170717T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Randolph IN-
237 AM EDT MON JUL 17 2017

...THE FLASH FLOOD WARNING FOR SOUTHERN RANDOLPH COUNTY WILL EXPIRE
AT 245 AM EDT...

The heavy rain has ended. Please continue to heed any remaining road 
closures.

LAT...LON 4000 8521 4007 8521 4005 8481 4001 8481

$$

MK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 10:39 PM EDT	Special Weather Statement	IND	Putnam	36 min
Jul 16, 10:52 PM EDT	Areal Flood Warning	IND	Randolph	3 hr
Jul 16, 11:27 PM EDT	Areal Flood Warning	IND	Henry	3 hr
Jul 17, 12:28 AM EDT	Flash Flood Warning	IND	Henry	3 hr
Jul 17, 1:39 AM EDT	Areal Flood Warning	IND	Decatur, Rush, Shelby	3 hr
Jul 17, 1:50 AM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Decatur, Jennings	28 min

Nearby

Flash Flood Warnings in Indiana, 2017 Every flash flood warning in 2017

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.