Alert archive / Indiana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 4, NWS Indianapolis, IN

April 12, 2002Clay County, Greene County, Owen County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 12, 2002, 3:17 PM EST for Clay County, Greene County, Owen County, Indiana. It was in force for 43 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 12, 2002, 3:17 PM EST (20:17 UTC)
Expired: Apr 12, 2002, 4:00 PM EST
In force: 43 min
Issued by: NWS Indianapolis, IN
Area: Counties, with a storm outline in the text

Counties Clay County, IN, Greene County, IN, Owen County, IN

The radar

The Indianapolis radar (KIND), 92 km from the middle of the area, began a volume at 20:20 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
Apr 12, 3:45 PM EST	Hail 1	Worthington, IN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.3 hours before the alert went out and 168 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: 215 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1073 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KIND 122017
SVRIND
INC021-055-119-122100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
317 PM EST FRI APR 12 2002

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN GREENE COUNTY IN SOUTHWEST INDIANA
  SOUTHERN CLAY COUNTY IN WEST CENTRAL INDIANA
  SOUTHWESTERN OWEN COUNTY IN WEST CENTRAL INDIANA

* UNTIL 400 PM EST

* AT 310 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LINTON...OR ABOUT 30 MILES SOUTH OF TERRE
  HAUTE...MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  JASONVILLE AT 325 PM EST
  WORTHINGTON AT 340 PM EST
  CLAY CITY AT 345 PM EST

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

LAT...LON 3914 8724 3897 8720 3923 8679 3940 8702

KOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 3:05 PM EST	Severe Thunderstorm Warning	IND	Vermillion, Warren	40 min
Apr 12, 4:31 PM EST	Flash Flood Warning	IND	Fountain, Vermillion, Warren	59 min
Apr 12, 4:38 PM EST	Flash Flood Warning	IND	Fountain, Vermillion, Warren	112 min
Apr 12, 4:43 PM EST	Severe Thunderstorm Warning	IND	Monroe, Morgan	32 min
Apr 12, 4:51 PM EST	Severe Thunderstorm Warning	IND	Clinton, Tippecanoe	39 min
Apr 12, 5:01 PM EST	Severe Thunderstorm Warning	IND	Brown	29 min
Apr 12, 5:32 PM EST	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Johnson	43 min
Apr 12, 5:38 PM EST	Flash Flood Warning	IND	Bartholomew, Brown, Greene, Johnson, Monroe, Morgan and 2 more	67 min
Apr 12, 5:41 PM EST	Flash Flood Warning	IND	Bartholomew, Brown, Greene, Johnson, Monroe, Morgan and 2 more	2 hr
Apr 12, 5:45 PM EST	Severe Thunderstorm Warning	IND	Bartholomew, Shelby	30 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.