Alert archive / Indiana / Flash Flood Warnings in 2015

Flash Flood Warning 41, NWS Indianapolis, IN

July 20, 2015Marion County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Jul 20, 2015, 11:46 PM EDT for Marion County, Indiana. It was in force for 3 hr. 5 reports 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: Jul 20, 2015, 11:46 PM EDT (03:46 UTC)
Expired: Jul 21, 2015, 2:45 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), 19 km from the middle of the area, began a volume at 03:46 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
Jul 21, 12:06 AM EDT	HEAVY RAIN 2.68	Indianapolis, IN	TOTAL RAINFALL SINCE 1005 PM
Jul 21, 12:20 AM EDT	FLASH FLOOD	3 Ne Indianapolis, IN	VEHICLE STUCK IN HIGH WATER NEAR THE INTERSECTION OF 25TH STREET AND HILLSIDE AVENUE.
Jul 21, 12:25 AM EDT	FLASH FLOOD	Indianapolis, IN	PORTIONS OF 16TH STREET FLOODED BETWEEN THE INDIANAPOLIS MOTOR SPEEDWAY AND DOWNTOWN INDIANAPOLIS. RELAYED FROM WISH TV METEOROLOGIST.
Jul 21, 1:00 AM EDT	HEAVY RAIN 2.97	3 N Indianapolis, IN
Jul 21, 1:14 AM EDT	FLASH FLOOD	1 N Indianapolis, IN	WATER IN THE HALLWAYS AT THE RALEIGH APARTMENTS NEAR THE INTERSECTION OF PENNSYLVANIA AND 13TH STREETS.

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, 3.8 hours before the alert went out and 201 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: 397 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

979 
WGUS53 KIND 210346
FFWIND
INC097-210645-
/O.NEW.KIND.FF.W.0041.150721T0346Z-150721T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1146 PM EDT MON JUL 20 2015

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

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

* UNTIL 245 AM EDT
    
* AT 1144 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATED THAT 1 
  TO 2 INCHES WITH LOCALLY HIGHER AMOUNTS HAD FALLEN SINCE 10 PM IN 
  A SWATH FROM NEAR CLERMONT AND SPEEDWAY THROUGH DOWNTOWN 
  INDIANAPOLIS. RTV6 STUDIOS DOWNTOWN RECORDED 2.37 INCHES OF RAIN 
  SINCE 1005 PM. UP TO AN ADDITIONAL HALF INCH TO ONE INCH IS 
  POSSIBLE BEFORE THE RAIN ENDS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  INDIANAPOLIS...LAWRENCE...BEECH GROVE...SPEEDWAY...CUMBERLAND...
  WARREN PARK...ROCKY RIPPLE...WYNNEDALE...SPRING HILL...CROWS
  NEST...NORTH CROWS NEST...MONUMENT CIRCLE...INDIANA STATE
  FAIRGROUNDS AND EAGLE CREEK RESERVOIR.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 65 BETWEEN MILE MARKERS 107 AND 123.
 INTERSTATE 70 BETWEEN MILE MARKERS 75 AND 93.
 INTERSTATE 74 BETWEEN MILE MARKERS 71 AND 97.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3986 8595 3969 8595 3974 8631 3987 8631

$$

RYAN

2 follow-up statements

201 
WGUS73 KIND 210511
FFSIND

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
111 AM EDT TUE JUL 21 2015

INC097-210645-
/O.CON.KIND.FF.W.0041.000000T0000Z-150721T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION IN-
111 AM EDT TUE JUL 21 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 AM EDT FOR
CENTRAL MARION COUNTY...

AT 109 AM EDT...LAW ENFORCEMENT AND BROADCAST MEDIA REPORTED HIGH 
WATER AND FLASH FLOODING OCCURRING ON STREETS ACROSS DOWNTOWN 
INDIANAPOLIS AND THE NEAR NORTH AND EAST SUBURBS. DOPPLER RADAR 
ESTIMATED THAT 2 TO 3 INCHES OF RAIN HAD FALLEN IN ABOUT 2 HOURS 
FROM NEAR SPEEDWAY EAST-SOUTHEAST THROUGH DOWNTOWN INDIANAPOLIS. 
ALTHOUGH RAIN HAS ENDED...FLOODING WILL CONTINUE.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
INDIANAPOLIS...LAWRENCE...BEECH GROVE...SPEEDWAY...CUMBERLAND...
WARREN PARK...ROCKY RIPPLE...WYNNEDALE...SPRING HILL...CROWS NEST...
NORTH CROWS NEST...MONUMENT CIRCLE...INDIANA STATE FAIRGROUNDS AND
EAGLE CREEK RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3986 8595 3969 8595 3974 8631 3987 8631

$$

RYAN

983 
WGUS73 KIND 210637
FFSIND

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
237 AM EDT TUE JUL 21 2015

INC097-210646-
/O.EXP.KIND.FF.W.0041.000000T0000Z-150721T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION IN-
237 AM EDT TUE JUL 21 2015

...THE FLASH FLOOD WARNING FOR CENTRAL MARION COUNTY WILL EXPIRE AT
245 AM EDT...

THE HEAVY RAIN HAS ENDED...AND FLASH FLOODING IS NO LONGER EXPECTED 
TO POSE A THREAT. USE CAUTION AS HIGH WATER WILL REMAIN IN LOW 
LYING AND POOR DRAINAGE AREAS AS WELL AS NEAR STREAMS OVERNIGHT.

LAT...LON 3986 8595 3969 8595 3974 8631 3987 8631

$$

RYAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 8:29 PM EDT	Areal Flood Advisory	IND	Brown, Monroe	3 hr
Jul 20, 8:39 PM EDT	Areal Flood Advisory	IND	Fountain, Vermillion, Warren	3 hr
Jul 20, 9:22 PM EDT	Areal Flood Advisory	IND	Fountain, Montgomery, Parke	3 hr
Jul 20, 9:40 PM EDT	Special Weather Statement	IND	Montgomery	35 min
Jul 20, 9:55 PM EDT	Areal Flood Advisory	IND	Rush	3 hr
Jul 20, 10:15 PM EDT	Special Weather Statement	IND	Hendricks	30 min
Jul 20, 10:44 PM EDT	Special Weather Statement	IND	Morgan	46 min
Jul 20, 10:49 PM EDT	Areal Flood Advisory	IND	Marion	3 hr
Jul 21, 2:42 AM EDT	Areal Flood Advisory	IND	Marion	5 hr

Nearby

Flash Flood Warnings in Indiana, 2015 Every flash flood warning in 2015

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.