Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 134, NWS Indianapolis, IN

July 1, 2012Decatur County, Jennings County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 1, 2012, 5:22 PM EDT for Decatur County, Jennings County, Indiana. It was in force for 38 min. 6 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 1, 2012, 5:22 PM EDT (21:22 UTC)
Expired: Jul 1, 2012, 6:00 PM EDT
In force: 38 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Decatur County, IN, Jennings County, IN

The radar

The Indianapolis radar (KIND), 88 km from the middle of the area, began a volume at 21:24 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 1, 5:26 PM EDT	HAIL 1	8 Ne Seymour, IN	QUARTER SIZE HAIL ALMOST COVERING GROUND.
Jul 1, 5:27 PM EDT	HAIL 1	Scipio, IN	TIME ESTIMATED
Jul 1, 5:33 PM EDT	HAIL 1.75	Hayden, IN
Jul 1, 5:35 PM EDT	HAIL 1.75	Hayden, IN
Jul 1, 5:40 PM EDT	HAIL 2	2 W North Vernon, IN
Jul 1, 5:43 PM EDT	HAIL 1.75	North Vernon, IN

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 12:00Z, 9.4 hours before the alert went out and 162 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: 2142 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1001 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

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

196 
WUUS53 KIND 012122
SVRIND
INC031-079-012200-
/O.NEW.KIND.SV.W.0134.120701T2122Z-120701T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
522 PM EDT SUN JUL 1 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN DECATUR COUNTY IN CENTRAL INDIANA...
  JENNINGS COUNTY IN SOUTHEAST INDIANA...

* UNTIL 600 PM EDT

* AT 520 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES WEST OF NORTH VERNON...
  OR 9 MILES NORTHEAST OF SEYMOUR...AND MOVING EAST AT 20 MPH. PENNY
  SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  NORTH VERNON...
  VERNON...
  SCIPIO...
  COUNTRY SQUIRE LAKES...
  WESTPORT...
  BUTLERVILLE...
  NEBRASKA...

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.

&&

LAT...LON 3913 8580 3913 8569 3916 8568 3921 8544
      3918 8543 3893 8544 3887 8580
TIME...MOT...LOC 2122Z 264DEG 17KT 3903 8574
WIND...HAIL 60MPH 0.75IN

$$

TDUD

2 follow-up statements

127 
WWUS53 KIND 012134
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
534 PM EDT SUN JUL 1 2012

INC031-079-012200-
/O.CON.KIND.SV.W.0134.000000T0000Z-120701T2200Z/
DECATUR-JENNINGS-
534 PM EDT SUN JUL 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
DECATUR AND JENNINGS COUNTIES UNTIL 600 PM EDT...

AT 532 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED NEAR NORTH VERNON...OR 12 MILES
NORTHEAST OF SEYMOUR...MOVING EAST AT 20 MPH. PENNY SIZE HAIL MAY
ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  NORTH VERNON...VERNON...WESTPORT...BUTLERVILLE AND NEBRASKA.

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.

&&

LAT...LON 3913 8580 3913 8569 3916 8568 3921 8544
      3918 8543 3893 8544 3887 8580
TIME...MOT...LOC 2134Z 264DEG 17KT 3904 8567
WIND...HAIL 60MPH 0.75IN

$$

TDUD

796 
WWUS53 KIND 012158
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
558 PM EDT SUN JUL 1 2012

INC031-079-012208-
/O.EXP.KIND.SV.W.0134.000000T0000Z-120701T2200Z/
DECATUR-JENNINGS-
558 PM EDT SUN JUL 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DECATUR AND
JENNINGS COUNTIES WILL EXPIRE AT 600 PM EDT/500 PM CDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP.


LAT...LON 3913 8580 3913 8569 3916 8568 3921 8544
      3918 8543 3893 8544 3887 8580
TIME...MOT...LOC 2158Z 264DEG 17KT 3905 8552

$$

TDUD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 3:01 AM EDT	Special Weather Statement	IND	Owen	29 min
Jul 1, 3:25 AM EDT	Special Weather Statement	IND	Monroe	35 min
Jul 1, 4:27 AM EDT	Excessive Heat Watch	IND	Daviess, Greene, Knox, Lawrence, Martin, Sullivan	11 hr
Jul 1, 5:00 AM EDT	Special Weather Statement	IND	Johnson, Morgan	30 min
Jul 1, 7:02 AM EDT	Special Weather Statement	IND	Jennings	28 min
Jul 1, 1:20 PM EDT	Special Weather Statement	IND	Carroll	40 min
Jul 1, 1:33 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Tippecanoe	57 min
Jul 1, 2:56 PM EDT	Severe Thunderstorm Warning	IND	Tipton	22 min
Jul 1, 3:17 PM EDT	Heat Advisory	IND	Bartholomew, Brown, Clay, Daviess, Decatur, Greene and 9 more	29 hr
Jul 1, 4:37 PM EDT	Severe Thunderstorm Warning	IND	Randolph	38 min
Jul 1, 5:56 PM EDT	Severe Thunderstorm Warning	IND	Knox	49 min
Jul 1, 6:04 PM EDT	Severe Thunderstorm Warning	IND	Jackson, Jennings	41 min
Jul 1, 6:43 PM EDT	Severe Thunderstorm Warning	IND	Knox	47 min
Jul 1, 7:13 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Knox	47 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.