Alert archive / Indiana / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 102, NWS Indianapolis, IN

July 9, 1989Saint Joseph County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 9, 1989, 3:09 AM EST for Saint Joseph County, Indiana. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Jul 9, 1989, 3:09 AM EST (08:09 UTC)
Expired
Jul 9, 1989, 3:45 AM EST
In force
36 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Saint Joseph County, IN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 8.2 hours before the alert went out and 260 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, Dayton/James M C, OH at 00:00Z on 1989-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 843 joules per kilogram.LCLEL10008507005003002001001 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, Dayton/James M C, OH at 00:00Z on 1989-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
843 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1696 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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

Special weather statement, Jul 9, 1:06 AM EST, 2 hours 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA
103 AM EST SUN JUL 9  1989

IN INDIANA SEVERE THUNDERSTORM WATCH NUMBER 588 IS IN EFFECT
UNTIL 7 AM EST AND INCLUDES THAT PART OF INDIANA...
NORTH OF A LINE FROM 5 MILES SOUTH OF KENTLAND TO 10 MILES NORTHEAST OF
KOKOMO...AND WEST OF A LINE FROM 10 MILES NORTHEAST OF KOKOMO TO 5 MILES
WEST OF ELKHART.

SOME CITIES INCLUDED ARE... RENSSELAER...SOUTH BEND...PLYMOUTH...
MONTICELLO...LOGANSPORT AND PERU.

REMEMBER...A WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR SEVERE
WEATHER IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD
BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR
LATfER STATEMENTS AND POSSIBLE WARNINGS.
STEIGERWALDT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 2:20 AM ESTSevere Thunderstorm WarningINDElkhart, Saint Joseph40 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1989Every severe thunderstorm warning in 1989

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.