Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 200, NWS Indianapolis, IN

August 5, 20125 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 5, 2012, 5:23 AM EDT for 5 counties in Indiana. It was in force for 52 min. 3 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: Aug 5, 2012, 5:23 AM EDT (09:23 UTC)
Expired: Aug 5, 2012, 6:15 AM EDT
In force: 52 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Boone County, IN, Hamilton County, IN, Hendricks County, IN, Madison County, IN, Marion County, IN

The radar

The Indianapolis radar (KIND), 38 km from the middle of the area, began a volume at 09:23 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
Aug 5, 5:45 AM EDT	TSTM WND DMG	Broad Ripple, IN	NUMEROUS TREES DOWN BETWEEN 46TH AND 49TH STREET AND COLLEGE AND KEYSTONE. MUCH OF THE AREA ALSO WITHOUT POWER.
Aug 5, 5:45 AM EDT	TSTM WND DMG	Noblesville, IN	POWER OUTAGES IN NOBLESVILLE AREA.
Aug 5, 5:47 AM EDT	TSTM WND GST 43	Indianapolis, IN	MEASURED AT SR 67 AND I-465.

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, 9.4 hours before the alert went out and 209 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: 3062 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 842 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

746 
WUUS53 KIND 050923
SVRIND
INC011-057-063-095-097-051015-
/O.NEW.KIND.SV.W.0200.120805T0923Z-120805T1015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
523 AM EDT SUN AUG 5 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BOONE COUNTY IN CENTRAL INDIANA...
  HAMILTON COUNTY IN CENTRAL INDIANA...
  HENDRICKS COUNTY IN CENTRAL INDIANA...
  SOUTHWESTERN MADISON COUNTY IN CENTRAL INDIANA...
  MARION COUNTY IN CENTRAL INDIANA...

* UNTIL 615 AM EDT

* AT 518 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 14 MILES NORTHEAST OF LEBANON
  TO 6 MILES SOUTHEAST OF LEBANON TO DANVILLE...AND MOVING EAST AT 30
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  INDIANAPOLIS...
  BROWNSBURG...
  ZIONSVILLE...
  PLAINFIELD...
  SPEEDWAY...
  CARMEL...
  NOBLESVILLE...
  FISHERS...
  BEECH GROVE...
  SHERIDAN...
  WESTFIELD...
  INDIANAPOLIS INT'L AIRPORT...
  ARCADIA...
  CICERO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 4023 8574 3995 8579 3993 8594 3967 8600
      3966 8667 4000 8648 4018 8629 4018 8624
      4021 8624
TIME...MOT...LOC 0923Z 275DEG 25KT 4017 8622 3999 8634
          3973 8649
WIND...HAIL 60MPH 1.00IN

$$
JH

3 follow-up statements

999 
WWUS53 KIND 050943
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
543 AM EDT SUN AUG 5 2012

INC011-063-050952-
/O.CAN.KIND.SV.W.0200.000000T0000Z-120805T1015Z/
BOONE-HENDRICKS-
543 AM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BOONE AND HENDRICKS
COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED EAST OF THE 
WARNED AREA. 

LAT...LON 4020 8575 3995 8579 3993 8594 3967 8600
      3967 8633 3992 8626 3993 8624 4006 8624
      4017 8623 4018 8624 4019 8622
TIME...MOT...LOC 0942Z 275DEG 25KT 4016 8601 3998 8609
          3971 8625

$$

INC057-095-097-051015-
/O.CON.KIND.SV.W.0200.000000T0000Z-120805T1015Z/
HAMILTON-MADISON-MARION-
543 AM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR HAMILTON...
SOUTHWESTERN MADISON AND MARION COUNTIES UNTIL 615 AM EDT...

AT 541 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 7 MILES NORTH OF NOBLESVILLE TO
CARMEL TO 6 MILES SOUTH OF SPEEDWAY...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  INDIANAPOLIS...NOBLESVILLE...FISHERS...BEECH GROVE...LAWRENCE...
  BROAD RIPPLE...INDIANA STATE FAIRGROUNDS...MONUMENT CIRCLE...
  CASTLETON...HOMECROFT...GEIST RESERVOIR...WARREN PARK...LAPEL AND
  INGALLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND
AWAY FROM WINDOWS.

&&

LAT...LON 4020 8575 3995 8579 3993 8594 3967 8600
      3967 8633 3992 8626 3993 8624 4006 8624
      4017 8623 4018 8624 4019 8622
TIME...MOT...LOC 0942Z 275DEG 25KT 4016 8601 3998 8609
          3971 8625
WIND...HAIL 60MPH 1.00IN

$$
JH

621 
WWUS53 KIND 051004
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
604 AM EDT SUN AUG 5 2012

INC057-095-051011-
/O.CAN.KIND.SV.W.0200.000000T0000Z-120805T1015Z/
HAMILTON-MADISON-
604 AM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR HAMILTON AND SOUTHWESTERN
MADISON COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS 
HAMILTON AND SOUTHWEST COUNTIES.  WINDS OF UP TO 45 MPH ARE STILL 
POSSIBLE IN SOUTHEAST HAMILTON COUNTY ALONG WITH VERY HEAVY RAINFALL 
AND DEADLY LIGHTNING. 

 
LAT...LON 3992 8594 3967 8600 3967 8622 3993 8607
      3993 8596
TIME...MOT...LOC 1001Z 275DEG 25KT 3993 8586 3997 8592
          3970 8608

$$

INC097-051015-
/O.CON.KIND.SV.W.0200.000000T0000Z-120805T1015Z/
MARION-
604 AM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN MARION
COUNTY UNTIL 615 AM EDT...

AT 555 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST OF LAWRENCE TO
FISHERS TO BEECH GROVE...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  EASTERN PORTIONS OF INDIANAPOLIS AND RURAL AREAS OF EASTERN MARION 
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND
AWAY FROM WINDOWS.

&&

LAT...LON 3992 8594 3967 8600 3967 8622 3993 8607
      3993 8596
TIME...MOT...LOC 1001Z 275DEG 25KT 3993 8586 3997 8592
          3970 8608
WIND...HAIL 60MPH 1.00IN

$$
JH

685 
WWUS53 KIND 051012
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
612 AM EDT SUN AUG 5 2012

INC097-051021-
/O.EXP.KIND.SV.W.0200.000000T0000Z-120805T1015Z/
MARION-
612 AM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MARION COUNTY WILL
EXPIRE AT 615 AM EDT/515 AM CDT/...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THESE THUNDERSTORMS.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON. 

LAT...LON 3992 8594 3967 8600 3967 8622 3993 8607
      3993 8596
TIME...MOT...LOC 1011Z 275DEG 25KT 3992 8577 3996 8583
          3969 8599

$$
JH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 8:13 PM EDT	Areal Flood Advisory	IND	Howard, Madison, Tipton	77 min
Aug 4, 8:36 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Randolph	39 min
Aug 4, 9:21 PM EDT	Areal Flood Advisory	IND	Randolph	99 min
Aug 5, 3:47 AM EDT	Special Weather Statement	IND	Tippecanoe, Warren	58 min
Aug 5, 4:47 AM EDT	Special Weather Statement	IND	Boone, Carroll, Clinton, Howard, Montgomery, Tipton	43 min
Aug 5, 5:14 AM EDT	Special Weather Statement	IND	Boone, Clinton, Hamilton, Hendricks, Marion	61 min
Aug 5, 5:53 AM EDT	Special Weather Statement	IND	Johnson, Shelby	52 min
Aug 5, 5:56 AM EDT	Special Weather Statement	IND	Hancock	34 min
Aug 5, 6:23 AM EDT	Special Weather Statement	IND	Henry, Rush, Shelby	52 min
Aug 5, 6:32 AM EDT	Severe Thunderstorm Warning	IND	Henry, Rush	28 min
Aug 5, 7:17 AM EDT	Special Weather Statement	IND	Decatur, Jackson, Jennings	43 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2012 Every severe thunderstorm warning in 2012

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.