Alert archive / Indiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 25, NWS Northern Indiana

July 8, 1997Blackford County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Jul 8, 1997, 9:30 PM EST for Blackford County, Indiana. It was in force for 45 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 8, 1997, 9:30 PM EST (02:30 UTC)
Expired
Jul 8, 1997, 10:15 PM EST
In force
45 min
Issued by
NWS Northern Indiana
Area
Whole counties

County Blackford County, IN

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 8, 8:00 PM ESTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.5 hours before the alert went out and 174 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, Cncnati-Daytn, OH at 00:00Z on 1997-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 702 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, Cncnati-Daytn, OH at 00:00Z on 1997-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
702 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1294 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFWA 090231 RRA
SVRFWA
INC009-090315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WAYNE IN
930 PM EST TUE JUL 8 1997
 
THE NATIONAL WEATHER SERVICE IN FORT WAYNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST INDIANA
 
   ...BLACKFORD COUNTY
 
AT 925PM A SEVERE THUNDERSTORM WAS 35 MILES SOUTH OF FORT WAYNE...OR 5
MILES NORTHWEST OF HARTFORD CITY.
 
MOVEMENT WAS TO THE EAST AT 20 MPH.
 
COMMUNITIES IN THE PATH OF THIS STORM INCLUDE
ROLL...MONTPELIER...HARTFORD CITY...AND TRENTON.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
REAUGH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 7:04 PM ESTSevere Thunderstorm WarningIWXDeKalb56 min
Jul 8, 8:18 PM ESTSevere Thunderstorm WarningIWXAllen42 min
Jul 8, 10:27 PM ESTSevere Thunderstorm WarningIWXAdams, Allen33 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1997Every severe thunderstorm warning in 1997

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.