Alert archive / Indiana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 41, NWS Indianapolis, IN

May 31, 2002Clay County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 31, 2002, 3:57 PM EST for Clay County, Indiana. It was in force for 48 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: May 31, 2002, 3:57 PM EST (20:57 UTC)
Expired: May 31, 2002, 4:45 PM EST
In force: 48 min
Issued by: NWS Indianapolis, IN
Area: Counties, with a storm outline in the text

County Clay County, IN

The radar

The Indianapolis radar (KIND), 80 km from the middle of the area, began a volume at 21:01 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
May 31, 4:20 PM EST	Hail 0.75	Brazil, 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, 9.0 hours before the alert went out and 149 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: 489 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 182 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

760 
WUUS53 KIND 312057
SVRIND
INC021-312145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
356 PM EST FRI MAY 31 2002

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN WEST CENTRAL INDIANA

* UNTIL 445 PM EST

* AT 349 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CARBON...OR ABOUT 17 MILES NORTHEAST OF
  TERRE HAUTE...MOVING SOUTHEAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KNIGHTSVILLE AT 405 PM EST
  HARMONY AT 410 PM EST
  CENTER POINT AT 435 PM EST

THE MAIN THREAT FROM THIS STORM WILL BE LARGE HAIL.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...DESTRUCTIVE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR.

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 3962 8725 3918 8724 3919 8709 3935 8709
          3940 8699 3959 8705

PUMA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 4:30 PM EST	Severe Thunderstorm Warning	IND	Owen	45 min
May 31, 4:46 PM EST	Severe Thunderstorm Warning	IND	Monroe	59 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.