Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 86, NWS Indianapolis, IN

April 1, 2012Decatur County, Rush County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 1, 2012, 11:09 PM EDT for Decatur County, Rush County, Indiana. It was in force for 36 min. 1 report 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
Apr 1, 2012, 11:09 PM EDT (03:09 UTC)
Expired
Apr 1, 2012, 11:45 PM EDT
In force
36 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Decatur County, IN, Rush County, IN

The radar

The Indianapolis radar (KIND), 80 km from the middle of the area, began a volume at 03:11 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

TimeReportWhereRemark
Apr 1, 11:19 PM EDTHAIL 1.253 S Moscow, 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.

IssuedProductOfficeLasted
Apr 1, 10:03 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.2 hours before the alert went out and 147 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 00:00Z on 2012-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 663 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 00:00Z on 2012-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.1939587897Sfc1 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
663 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
943 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
267 m²/s²
Significant tornado parameter
0.8
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

233 
WUUS53 KIND 020309
SVRIND
INC031-139-020345-
/O.NEW.KIND.SV.W.0086.120402T0309Z-120402T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1109 PM EDT SUN APR 1 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

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

* UNTIL 1145 PM EDT

* AT 1106 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 10 MILES SOUTHWEST OF RUSHVILLE...OR 13 MILES
  EAST OF SHELBYVILLE...AND MOVING SOUTH AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GREENSBURG...
  SANDUSKY...
  ADAMS...
  MILFORD...
  NEWPOINT...
  LETTS...
  MILLHOUSEN...
  WESTPORT...

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 124 AND 143.

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.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3919 8543 3918 8548 3914 8556 3913 8560
      3951 8563 3957 8563 3958 8544 3926 8530
TIME...MOT...LOC 0309Z 343DEG 33KT 3947 8553
WIND...HAIL <50MPH 1.00IN

$$

AB/RYAN
1 follow-up statement
881 
WWUS53 KIND 020324
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1124 PM EDT SUN APR 1 2012

INC031-139-020345-
/O.CON.KIND.SV.W.0086.000000T0000Z-120402T0345Z/
DECATUR-RUSH-
1124 PM EDT SUN APR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DECATUR AND
SOUTHWESTERN RUSH COUNTIES UNTIL 1145 PM EDT...

AT 1120 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 7 MILES NORTH OF GREENSBURG...OR 16 MILES EAST OF
SHELBYVILLE...MOVING SOUTH AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  GREENSBURG...NEWPOINT...LETTS...MILLHOUSEN AND WESTPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

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

&&

LAT...LON 3919 8543 3918 8548 3914 8556 3913 8560
      3950 8562 3952 8541 3926 8530
TIME...MOT...LOC 0324Z 343DEG 33KT 3940 8549
WIND...HAIL <50MPH 1.00IN

$$

RYAN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 9:28 PM EDTSpecial Weather StatementINDDelaware47 min
Apr 1, 9:32 PM EDTSpecial Weather StatementINDHamilton43 min
Apr 1, 9:42 PM EDTSevere Thunderstorm WarningINDHamilton, Hancock, Henry, Madison33 min
Apr 1, 9:52 PM EDTSevere Thunderstorm WarningINDBoone, Hamilton, Marion23 min
Apr 1, 10:14 PM EDTSevere Thunderstorm WarningINDHancock, Henry, Rush31 min
Apr 1, 10:16 PM EDTSevere Thunderstorm WarningINDHamilton, Hancock, Marion, Shelby29 min
Apr 1, 10:44 PM EDTSevere Thunderstorm WarningINDRush31 min
Apr 1, 10:45 PM EDTSevere Thunderstorm WarningINDHancock, Marion, Shelby30 min
Apr 1, 11:14 PM EDTSevere Thunderstorm WarningINDBartholomew, Decatur, Shelby46 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2012Every 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.