Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 131, NWS Indianapolis, IN

July 19, 1998Boone County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 19, 1998, 7:46 PM EST for Boone County, Indiana. It was in force for 34 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 19, 1998, 7:46 PM EST (00:46 UTC)
Expired
Jul 19, 1998, 8:20 PM EST
In force
34 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Boone County, IN

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 19, 3:15 PM ESTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.8 hours before the alert went out and 182 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 00:00Z on 1998-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2594 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 00:00Z on 1998-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.193958Sfc1 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
2594 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1666 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
86 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.

000 
TTAA00 KIND 200047
SVRIND
INC011-200120-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
746 PM EST SUN JUL 19 1998

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BOONE COUNTY IN CENTRAL INDIANA

* UNTIL 820 PM EST

* AT 744 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 25 MILES NORTHWEST OF INDIANAPOLIS NEAR ULEN...
  MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GADSEN AT 755 PM
  WAUGH...ROSSTON AND BIG SPRINGS AT 805 PM

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

ZIMMERMAN

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.

In the hours before

Local storm report, Jul 19, 6:39 PM EST, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
639 PM EST SUN JUL 19 1998

TIME (EST) .....CITY LOCATION.....STATE   ...EVENT...
DATE       ....COUNTY LOCATION....        ...REMARKS...

0631 PM    FOREST                    IN   1.75 INCH HAIL
07/19/98   CLINTON                        GOLFBALL SIZE HAIL
                                          COVERING THE GROUND

ELSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 7:59 PM ESTSevere Thunderstorm WarningINDClinton36 min
Jul 19, 8:11 PM ESTSevere Thunderstorm WarningINDRush34 min
Jul 19, 8:15 PM ESTSevere Thunderstorm WarningINDHamilton35 min
Jul 19, 8:40 PM ESTSevere Thunderstorm WarningINDMadison30 min
Jul 19, 9:14 PM ESTSevere Thunderstorm WarningINDDelaware31 min
Jul 19, 9:21 PM ESTSevere Thunderstorm WarningINDRandolph49 min
Jul 19, 9:43 PM ESTSevere Thunderstorm WarningINDMadison32 min
Jul 19, 11:13 PM ESTSevere Thunderstorm WarningINDRush32 min
Jul 19, 11:48 PM ESTSevere Thunderstorm WarningINDRush32 min
Jul 20, 1:20 AM ESTSevere Thunderstorm WarningINDJohnson, Marion, Morgan30 min
Jul 20, 1:47 AM ESTSevere Thunderstorm WarningINDShelby33 min
Jul 20, 1:52 AM ESTSevere Thunderstorm WarningINDJohnson33 min
Jul 20, 2:32 AM ESTSevere Thunderstorm WarningINDBartholomew, Decatur33 min
Jul 20, 2:54 AM ESTSevere Thunderstorm WarningINDBrown31 min
Jul 20, 3:06 AM ESTSevere Thunderstorm WarningINDBartholomew34 min
Jul 20, 3:26 AM ESTSevere Thunderstorm WarningINDJohnson, Shelby34 min
Jul 20, 5:43 AM ESTFlash Flood WarningINDBartholomew, Decatur, Jennings6 hr
Jul 20, 11:40 AM ESTFlash Flood WarningINDBartholomew, Decatur, Jackson, Jennings5 hr

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; the sounding from the Mesonet's radiosonde archive.