Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 64, NWS Indianapolis, IN

June 12, 1998Carroll County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 12, 1998, 4:55 PM EST for Carroll County, Indiana. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 12, 1998, 4:55 PM EST (21:55 UTC)
Expired
Jun 12, 1998, 5:40 PM EST
In force
45 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Carroll County, IN

The radar

The Indianapolis radar (KIND), 100 km from the middle of the area, began a volume at 21:57 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
Jun 12, 5:20 PM ESTThunderstorm WindFlora, INThunderstorm winds blew down several trees.

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 watch it was issued in

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

IssuedProductOfficeLasted
Jun 12, 2:45 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 179 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, Lincoln, IL at 12:00Z on 1998-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 538 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 1998-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
538 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1016 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 122155 RRA
SVRIND
INC015-122240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
455 PM EST FRI JUN 12 1998

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARROLL COUNTY IN NORTH CENTRAL INDIANA

* UNTIL 540 PM EST

* AT 455 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES NORTHEAST OF LAFAYETTE...NEAR
  AMERICUS... MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DELPHI BY 505 PM
  FLORA BY 515 PM
  CAMDEN BY 515 PM

GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! A TORNADO
WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

EDDY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 7:04 PM ESTTornado WarningINDHoward51 min
Jun 11, 7:19 PM ESTTornado WarningINDRandolph61 min
Jun 11, 7:31 PM ESTSevere Thunderstorm WarningINDGreene, Lawrence, Martin49 min
Jun 11, 7:31 PM ESTSevere Thunderstorm WarningINDDaviess49 min
Jun 11, 7:49 PM ESTTornado WarningINDMadison36 min
Jun 11, 7:53 PM ESTTornado WarningINDHendricks, Marion47 min
Jun 11, 8:09 PM ESTTornado WarningINDHamilton46 min
Jun 11, 8:25 PM ESTTornado WarningINDHoward30 min
Jun 11, 8:29 PM ESTTornado WarningINDTipton31 min
Jun 11, 8:51 PM ESTSevere Thunderstorm WarningINDJackson34 min
Jun 11, 9:23 PM ESTSevere Thunderstorm WarningINDRandolph32 min
Jun 12, 4:01 PM ESTFlash Flood WarningINDCarroll, Tippecanoe3 hr
Jun 12, 4:01 PM ESTFlash Flood WarningINDFountain, Warren3 hr
Jun 12, 4:33 PM ESTSevere Thunderstorm WarningINDTippecanoe47 min
Jun 12, 4:59 PM ESTFlash Flood WarningINDClinton, Howard4 hr
Jun 12, 4:59 PM ESTFlash Flood WarningINDMontgomery4 hr
Jun 12, 5:17 PM ESTTornado WarningINDHoward48 min
Jun 12, 6:13 PM ESTSevere Thunderstorm WarningINDBoone, Hendricks47 min
Jun 12, 6:17 PM ESTSevere Thunderstorm WarningINDMarion48 min
Jun 12, 6:32 PM ESTSevere Thunderstorm WarningINDDelaware, Madison33 min
Jun 12, 6:36 PM ESTSevere Thunderstorm WarningINDVigo49 min
Jun 12, 6:45 PM ESTSevere Thunderstorm WarningINDHancock50 min
Jun 12, 6:49 PM ESTSevere Thunderstorm WarningINDClay36 min
Jun 12, 6:58 PM ESTSevere Thunderstorm WarningINDHenry32 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1998Every severe thunderstorm warning in 1998

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.