Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 207, NWS Indianapolis, IN

August 9, 20124 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 9, 2012, 7:56 PM EDT for 4 counties in Indiana. It was in force for 34 min. 4 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 9, 2012, 7:56 PM EDT (23:56 UTC)
Expired: Aug 9, 2012, 8:30 PM EDT
In force: 34 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Boone County, IN, Hendricks County, IN, Montgomery County, IN, Putnam County, IN

The radar

The Indianapolis radar (KIND), 39 km from the middle of the area, began a volume at 23:56 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 9, 8:03 PM EDT	TSTM WND GST 60	Ladoga, IN	ESTIMATED 60 MPH WINDS ACCOMPANIED BY NICKEL SIZE HAIL.
Aug 9, 8:09 PM EDT	HAIL 1.75	Ladoga, IN	REPORTED VIA MEDIA FACEBOOK PAGE.
Aug 9, 8:27 PM EDT	HAIL 0.25	1 Ne Jamestown, IN	SR 75 AND 700 S.
Aug 9, 8:32 PM EDT	HAIL 0.75	North Salem, IN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 9, 5:02 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.9 hours before the alert went out and 167 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: 396 J/kg
Mixed-layer CIN: -236 J/kg
Mixed-layer LCL: 1480 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 88 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.

853 
WUUS53 KIND 092356
SVRIND
INC011-063-107-133-100030-
/O.NEW.KIND.SV.W.0207.120809T2356Z-120810T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
756 PM EDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BOONE COUNTY IN CENTRAL INDIANA...
  NORTHWESTERN HENDRICKS COUNTY IN CENTRAL INDIANA...
  SOUTHEASTERN MONTGOMERY COUNTY IN WEST CENTRAL INDIANA...
  NORTHEASTERN PUTNAM COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 830 PM EDT

* AT 751 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES
  SOUTH OF CRAWFORDSVILLE...AND MOVING EAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LADOGA...
  ROACHDALE...
  NEW ROSS...
  JAMESTOWN...
  NORTH SALEM...
  LIZTON...

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 47 AND 58.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 3998 8654 3986 8651 3977 8663 3987 8690
      3999 8684
TIME...MOT...LOC 2356Z 287DEG 19KT 3993 8682
WIND...HAIL 60MPH 1.00IN

$$

MRD/MK

2 follow-up statements

792 
WWUS53 KIND 100009
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
809 PM EDT THU AUG 9 2012

INC011-063-107-133-100030-
/O.CON.KIND.SV.W.0207.000000T0000Z-120810T0030Z/
BOONE-HENDRICKS-MONTGOMERY-PUTNAM-
809 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BOONE...NORTHWESTERN HENDRICKS...SOUTHEASTERN MONTGOMERY AND
NORTHEASTERN PUTNAM COUNTIES UNTIL 830 PM EDT...

AT 805 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 11 MILES SOUTHEAST OF CRAWFORDSVILLE...MOVING EAST
AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  JAMESTOWN...NORTH SALEM AND LIZTON.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 3996 8654 3986 8651 3977 8663 3988 8685
      3996 8681
TIME...MOT...LOC 0009Z 283DEG 17KT 3992 8674
WIND...HAIL <50MPH 1.00IN

$$

MRD/MK

426 
WWUS53 KIND 100015
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
815 PM EDT THU AUG 9 2012

INC011-063-107-133-100030-
/O.CON.KIND.SV.W.0207.000000T0000Z-120810T0030Z/
BOONE-HENDRICKS-MONTGOMERY-PUTNAM-
815 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BOONE...NORTHWESTERN HENDRICKS...SOUTHEASTERN MONTGOMERY AND
NORTHEASTERN PUTNAM COUNTIES UNTIL 830 PM EDT...

AT 810 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 12 MILES
SOUTHEAST OF CRAWFORDSVILLE...MOVING EAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  JAMESTOWN...NORTH SALEM AND LIZTON.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 3989 8683 3995 8678 3996 8654 3986 8651
      3977 8663
TIME...MOT...LOC 0015Z 283DEG 14KT 3991 8673
WIND...HAIL 60MPH 1.00IN

$$

MRD/MK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 9:26 PM EDT	Severe Thunderstorm Warning	IND	Johnson, Marion, Shelby	33 min
Aug 8, 9:58 PM EDT	Areal Flood Advisory	IND	Hendricks, Marion	3 hr
Aug 8, 10:46 PM EDT	Special Weather Statement	IND	Rush	44 min
Aug 9, 2:11 AM EDT	Special Weather Statement	IND	Montgomery	34 min
Aug 9, 2:14 AM EDT	Special Weather Statement	IND	Vermillion	31 min
Aug 9, 2:27 AM EDT	Areal Flood Advisory	IND	Boone, Fountain, Montgomery, Parke, Putnam, Vermillion	3 hr
Aug 9, 2:46 AM EDT	Special Weather Statement	IND	Parke, Vermillion	44 min
Aug 9, 2:59 AM EDT	Severe Thunderstorm Warning	IND	Fountain, Parke, Vermillion	46 min
Aug 9, 3:33 AM EDT	Special Weather Statement	IND	Hamilton	42 min
Aug 9, 3:49 AM EDT	Areal Flood Warning	IND	Fountain, Montgomery, Parke, Vermillion	5 hr
Aug 9, 3:55 AM EDT	Special Weather Statement	IND	Hendricks, Parke, Putnam	50 min
Aug 9, 4:10 AM EDT	Special Weather Statement	IND	Owen	50 min
Aug 9, 4:27 AM EDT	Areal Flood Advisory	IND	Hamilton, Hendricks, Marion	4 hr
Aug 9, 4:42 AM EDT	Special Weather Statement	IND	Hendricks, Marion	48 min
Aug 9, 6:33 PM EDT	Special Weather Statement	IND	Fountain	27 min
Aug 9, 6:46 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke	44 min
Aug 9, 7:02 PM EDT	Tornado Warning	IND	Fountain, Montgomery, Parke, Putnam	28 min
Aug 9, 7:18 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Tippecanoe	42 min
Aug 9, 7:27 PM EDT	Severe Thunderstorm Warning	IND	Montgomery, Putnam	33 min
Aug 9, 7:58 PM EDT	Severe Thunderstorm Warning	IND	Clinton, Montgomery, Tippecanoe	32 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.