Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 134, NWS Northern Indiana

July 3, 1998Elkhart County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Jul 3, 1998, 10:29 PM EST for Elkhart County, Indiana. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 3, 1998, 10:29 PM EST (03:29 UTC)
Expired: Jul 3, 1998, 10:50 PM EST
In force: 21 min
Issued by: NWS Northern Indiana
Area: Whole counties

County Elkhart County, IN

The radar

The Northern Indiana radar (KIWX), 30 km from the middle of the area, began a volume at 03:30 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.

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 3.5 hours before the alert went out and 236 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: 2 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1779 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

743 
WUUS53 KIWX 040330 RRA
SVRFWA
INC039-040350-

BULLETIN- EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1029 PM EST FRI JUL 3 1998

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ELKHART COUNTY IN NORTH CENTRAL INDIANA

* UNTIL 1050 PM EST

* AT 1028 PM EST... DOPPLER RADAR AT NORTH WEBSTER INDICATED A
  SEVERE THUNDERSTORM 18 MILES SOUTHEAST OF ELKHART OR 3 MILES
  SOUTHWEST OF MILLERSBURG MOVING EAST AT 30 MPH.

* SOME LOCATIONS IN THE PATH OF THIS SEVERE THUNDERSTORM ARE...
  BENTON
  MILLERSBURG

WINDS IN EXCESS OF 60 MPH ARE LIKELY  SEEK SAFE SHELTER
IMMEDIATELY.

TEH/JLA

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Northern Indiana wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 3, 7:57 PM EST, 2 hours 32 minutes earlier.

Area forecast discussion, Jul 3, 7:57 PM EST, 2 hours 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
757 PM EST FRI JUL 3 1998

00Z MESO ANALYSIS SHOWING CURRENT CONVECTION ACRS N IL AND S LM IN
RESPONSE TO SW ENERGY INVOF NE IA SW WI AND SFC COLD FRONT.  LOOKS
LIKE FAIR PUSH WITH FRONT GIVEN LARGE 3HR PRESSURE FALLS.  BEST
MOISTURE CONVERGENCE AND HIGHER THETA-E NOW WORKING INTO NW IN.
ADAS PUTS FRONT FROM NORTH OF ORD TO OMA WITH BEST INSTABILITY
SPREADING EASTWARD.

00Z RAOBS FROM ILX AND DVN INDICATE CAPES 2-3K J/KG.  HEAVY RAIN A
GOOD BET BASED ON DVN DEEP LYR MOISTURE WITH PW OVER 2 INCHES. SVR
WX THREAT WOULD SEEM SLIGHT GIVEN UNIMPRESSIVE SHEAR VALUES BUT
MODIFIED NSHARP DOES SHOW MUCH HIGHER SREH VALUES WITH
SOUTHEASTWARD MOVING STORMS.  THIS INDEED THE CASE WITH CURRENT
SEVERE CONVECTIVE CLUSTER NEAR ORD.

EXTRAPOLATION OF CURRENT LEADING PRECIP EDGE WOULD PUT IT INTO NW OH
COUNTIES CLOSE TO MIDNIGHT.  CURRENT FORECAST LOOK TO HAVE PRETTY
GOOD HANDLE ON THINGS OTHERWISE.

.IWX...NONE.

TEH

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 8:45 PM EST	Severe Thunderstorm Warning	IWX	LaPorte	65 min
Jul 3, 9:08 PM EST	Tornado Warning	IWX	Saint Joseph	52 min
Jul 3, 9:21 PM EST	Tornado Warning	IWX	LaPorte, Marshall, Starke	49 min
Jul 3, 9:35 PM EST	Tornado Warning	IWX	Elkhart	50 min
Jul 3, 9:54 PM EST	Tornado Warning	IWX	Kosciusko	66 min
Jul 3, 10:25 PM EST	Severe Thunderstorm Warning	IWX	LaGrange, Noble	65 min
Jul 3, 10:49 PM EST	Tornado Warning	IWX	Wabash	46 min
Jul 3, 10:51 PM EST	Tornado Warning	IWX	Fulton, Miami	49 min
Jul 3, 11:00 PM EST	Tornado Warning	IWX	Huntington, Whitley	50 min
Jul 3, 11:27 PM EST	Tornado Warning	IWX	Cass, Miami	48 min
Jul 3, 11:35 PM EST	Tornado Warning	IWX	Wabash	50 min
Jul 3, 11:50 PM EST	Tornado Warning	IWX	Huntington	35 min
Jul 3, 11:57 PM EST	Tornado Warning	IWX	Miami	48 min
Jul 4, 12:25 AM EST	Tornado Warning	IWX	Grant	65 min
Jul 4, 1:21 AM EST	Flash Flood Warning	IWX	Cass, Fulton, Miami	3 hr
Jul 4, 4:34 AM EST	Flash Flood Warning	IWX	Cass, Fulton, Miami	2 hr
Jul 4, 6:35 AM EST	Flash Flood Warning	IWX	Cass, Fulton, Miami

Nearby

Severe Thunderstorm Warnings in Indiana, 1998 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.