Alert archive / Indiana / Flash Flood Warnings in 2016

Flash Flood Warning 15, NWS Indianapolis, IN

August 27, 2016Marion County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Aug 27, 2016, 10:19 AM EDT for Marion County, Indiana. It was in force for 4 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 27, 2016, 10:19 AM EDT (14:19 UTC)
Expired
Aug 27, 2016, 2:15 PM EDT
In force
4 hr
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Flood severity
None

County Marion County, IN

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 2.3 hours before the alert went out and 198 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, Cncnati-Daytn, OH at 12:00Z on 2016-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1019 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2016-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
1019 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
1068 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

783 
WGUS53 KIND 271419
FFWIND
INC097-271815-
/O.NEW.KIND.FF.W.0015.160827T1419Z-160827T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1019 AM EDT SAT AUG 27 2016

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MARION COUNTY IN CENTRAL INDIANA...

* UNTIL 215 PM EDT

* AT 1018 AM 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...
  INDIANAPOLIS...FISHERS...LAWRENCE...BEECH GROVE...SPEEDWAY...
  SOUTHPORT...CUMBERLAND...MERIDIAN HILLS...WARREN PARK...CLERMONT...
  HOMECROFT...ROCKY RIPPLE...WILLIAMS CREEK...WYNNEDALE...
  SPRING HILL...CROWS NEST...NORTH CROWS NEST...
  INDIANA STATE FAIRGROUNDS...CAMBY AND GEIST RESERVOIR.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 65 BETWEEN MILE MARKERS 101 AND 126.
 INTERSTATE 69 BETWEEN MILE MARKERS 200 AND 202.
 INTERSTATE 70 BETWEEN MILE MARKERS 70 AND 93.
 INTERSTATE 74 BETWEEN MILE MARKERS 71 AND 100.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 3987 8594 3987 8595 3964 8595 3964 8632
      3992 8632 3993 8601 3993 8594

$$

NIELD
1 follow-up statement
369 
WGUS73 KIND 271812
FFSIND

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
212 PM EDT SAT AUG 27 2016

INC097-271821-
/O.EXP.KIND.FF.W.0015.000000T0000Z-160827T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION IN-
212 PM EDT SAT AUG 27 2016

...THE FLASH FLOOD WARNING FOR MARION COUNTY WILL EXPIRE AT 215 PM
EDT...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3987 8594 3987 8595 3964 8595 3964 8632
      3992 8632 3993 8601 3993 8594

$$

NIELD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 9:03 PM EDTAreal Flood WarningINDHamilton, Hendricks, Marion9 hr
Aug 27, 8:38 AM EDTRiver Flood WarningINDMarion24 hr
Aug 27, 9:45 AM EDTSpecial Weather StatementINDHoward45 min
Aug 27, 10:01 AM EDTAreal Flood WarningINDDaviess, Knox6 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.