Alert archive / Indiana / Flash Flood Warnings in 2017

Flash Flood Warning 1, NWS Indianapolis, IN

April 29, 20174 counties in Indiana

NWS Indianapolis, IN issued this flash flood warning at Apr 29, 2017, 9:17 PM EDT for 4 counties in 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: Apr 29, 2017, 9:17 PM EDT (01:17 UTC)
Expired: Apr 30, 2017, 12:15 AM EDT
In force: 3 hr
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Flood severity: None

Counties Clay County, IN, Parke County, IN, Vermillion County, IN, Vigo County, IN

The radar

The Indianapolis radar (KIND), 109 km from the middle of the area, began a volume at 01:17 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

Lincoln, IL (KILX), launched 00:00Z, 1.3 hours before the alert went out and 124 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 434 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 549 m²/s²
0-3 km storm-relative helicity: 930 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

439 
WGUS53 KIND 300117
FFWIND
INC021-121-165-167-300415-
/O.NEW.KIND.FF.W.0001.170430T0117Z-170430T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Indianapolis IN
917 PM EDT SAT APR 29 2017

The National Weather Service in Indianapolis has issued a

* Flash Flood Warning for...
  Vigo County in west central Indiana...
  Northwestern Clay County in west central Indiana...
  Parke County in west central Indiana...
  Vermillion County in west central Indiana...

* Until 1215 AM EDT.

* At 915 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 1 to 2 inches of rain is 
  possible through 11 pm...in addition to the 2 to 3 inches that 
  fell from Friday afternoon through this morning. Flash flooding is 
  expected to begin shortly.

* Some locations that will experience flooding include...
  Terre Haute, Clinton, Rockville, Newport, West Terre Haute,
  Fairview Park, Prairieton, Prairie Creek, Cayuga, Seelyville,
  Montezuma, Rosedale, Dana, Staunton, Universal, Mecca,
  Bloomingdale, Marshall, Riley and Lodi.

This includes Interstate 70 between mile markers 1 and 19.
 
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.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

&&

LAT...LON 3934 8758 3934 8756 3935 8755 3935 8753
      3995 8753 3995 8709 3926 8723 3926 8760
      3930 8760 3931 8761

$$

Ryan

1 follow-up statement

539 
WGUS73 KIND 300311
FFSIND

Flash Flood Statement
National Weather Service Indianapolis IN
1111 PM EDT SAT APR 29 2017

INC021-121-165-167-300415-
/O.CON.KIND.FF.W.0001.000000T0000Z-170430T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Vigo IN-Clay IN-Parke IN-Vermillion IN-
1111 PM EDT SAT APR 29 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR
VIGO...NORTHWESTERN CLAY...PARKE AND VERMILLION COUNTIES...

At 1110 PM EDT, Doppler radar indicated moderate to heavy rain 
continuing across the warned area.  Flash flooding is expected to 
continue.

Some locations that will experience flooding include...
Terre Haute, Clinton, Rockville, Newport, West Terre Haute, Fairview
Park, Prairieton, Prairie Creek, Cayuga, Seelyville, Montezuma,
Rosedale, Dana, Staunton, Universal, Mecca, Bloomingdale, Marshall,
Riley and Lodi.

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.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

&&

LAT...LON 3934 8758 3934 8756 3935 8755 3935 8753
      3995 8753 3995 8709 3926 8723 3926 8760
      3930 8760 3931 8761

$$

Ryan

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 8:41 PM EDT	Severe Thunderstorm Warning	IND	Clay, Fountain, Greene, Montgomery, Owen, Parke and 6 more	49 min
Apr 29, 9:30 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke, Tippecanoe	28 min
Apr 29, 9:44 PM EDT	Severe Thunderstorm Warning	IND	Clay, Greene, Hendricks, Morgan, Owen, Putnam	46 min
Apr 29, 10:06 PM EDT	Flash Flood Warning	IND	Clay, Hendricks, Morgan, Owen, Putnam	3 hr
Apr 29, 10:42 PM EDT	River Flood Warning	IND	Hamilton, Madison	39 hr
Apr 29, 10:42 PM EDT	River Flood Warning	IND	Marion, Morgan	9 days
Apr 29, 10:42 PM EDT	River Flood Warning	IND	Bartholomew	39 hr
Apr 29, 10:59 PM EDT	Flash Flood Warning	IND	Boone, Hamilton, Hancock, Hendricks, Johnson, Marion and 2 more	3 hr
Apr 30, 7:04 AM EDT	River Flood Warning	IND	Hendricks, Morgan	52 hr
Apr 30, 7:04 AM EDT	River Flood Warning	IND	Boone, Marion	6 hr
Apr 30, 7:20 AM EDT	River Flood Warning	IND	Owen	63 hr
Apr 30, 8:54 AM EDT	Areal Flood Warning	IND	Boone, Clay, Clinton, Fountain, Hamilton, Hancock and 13 more	24 hr
Apr 30, 11:17 AM EDT	River Flood Warning	IND	Hamilton, Marion	71 hr
Apr 30, 11:17 AM EDT	River Flood Warning	IND	Bartholomew, Jackson	3 days
Apr 30, 11:17 AM EDT	River Flood Warning	IND	Daviess, Dubois, Martin, Pike	8 days

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.