Alert archive / Indiana / Flash Flood Warnings in 2016

Flash Flood Warning 20, NWS Indianapolis, IN

August 28, 2016Sullivan County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Aug 28, 2016, 11:40 PM EDT for Sullivan 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
Aug 28, 2016, 11:40 PM EDT (03:40 UTC)
Expired
Aug 29, 2016, 2:45 AM EDT
In force
3 hr
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Flood severity
None

County Sullivan County, IN

The radar

The Evansville,IN radar (KVWX), 88 km from the middle of the area, began a volume at 03:44 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, 3.7 hours before the alert went out and 152 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2016-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 870 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2016-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
870 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1034 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted.

463 
WGUS53 KIND 290340
FFWIND
INC153-290645-
/O.NEW.KIND.FF.W.0020.160829T0340Z-160829T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1140 PM EDT SUN AUG 28 2016

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN SULLIVAN COUNTY IN SOUTHWESTERN INDIANA...

* UNTIL 245 AM EDT

* AT 1140 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MEROM...GRAYSVILLE AND TURTLE CREEK RESERVOIR. 

LAT...LON 3914 8765 3914 8752 3892 8739 3892 8752
      3896 8751 3899 8757 3900 8757 3900 8758
      3903 8757 3904 8758 3906 8757 3908 8760
      3909 8762 3910 8761

$$

JAS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 10:34 PM EDTSpecial Weather StatementINDKnox41 min
Aug 28, 10:41 PM EDTFlash Flood WarningINDKnox3 hr
Aug 28, 10:52 PM EDTSevere Thunderstorm WarningINDKnox22 min
Aug 29, 1:33 AM EDTAreal Flood WarningINDKnox6 hr
Aug 29, 3:07 AM EDTAreal Flood WarningINDFountain, Montgomery, Tippecanoe, Warren6 hr

Nearby

Flash Flood Warnings in Indiana, 2016Every flash flood warning in 2016

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.