Alert archive / Indiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 1, NWS Northern Indiana

May 18, 1997DeKalb County, Indiana; Defiance County, Ohio

NWS Northern Indiana issued this severe thunderstorm warning at May 18, 1997, 2:18 PM EST for DeKalb County, Indiana; Defiance County, Ohio. It was in force for 27 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
May 18, 1997, 2:18 PM EST (19:18 UTC)
Expired
May 18, 1997, 2:45 PM EST
In force
27 min
Issued by
NWS Northern Indiana
Area
Whole counties

Counties DeKalb County, IN, Defiance County, OH

The watch it was issued in

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

IssuedProductOfficeLasted
May 18, 1:30 PM ESTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 7.3 hours before the alert went out and 186 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, Detroit, MI at 12:00Z on 1997-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Detroit, MI at 12:00Z on 1997-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1368 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
169 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.

000 
TTAA00 KFWA 181918 RRA
SVRFWA
INC033-OHC039-181945-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WAYNE IN
218 PM EST (318 PM EDT) SUN MAY 18 1997
 
THE NATIONAL WEATHER SERVICE IN FORT WAYNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  245 PM EST (345 PM EDT)
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST INDIANA
 
   ...SOUTHEASTERN DE KALB COUNTY
 
 
IN NORTHWEST OHIO
 
   ...WESTERN AND CENTRAL DEFIANCE COUNTY
 
AT 215PM EST/315PM EDT A SEVERE THUNDERSTORM WAS 30 MILES WEST OF
DEFIANCE NEAR SPENCERVILLE INDIANA.
 
MOVEMENT WAS TO THE EAST AND NORTHEAST AT 35 MPH.
 
THE STORM WILL AFFECT THE TOWNS OF SAINT
JOE...NEWVILLE...HICKSVILLE...AND FARMER CENTER.
 
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
 
 
REAUGH

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 2:51 PM ESTSevere Thunderstorm WarningIWXDefiance39 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1997Severe Thunderstorm Warnings in Ohio, 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.