Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 21, NWS Northern Indiana

July 8, 1997Williams County, Ohio

NWS Northern Indiana issued this severe thunderstorm warning at Jul 8, 1997, 8:13 PM EDT for Williams County, Ohio. It was in force for 47 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, 8:13 PM EDT (00:13 UTC)
Expired
Jul 8, 1997, 9:00 PM EDT
In force
47 min
Issued by
NWS Northern Indiana
Area
Whole counties

County Williams County, OH

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 8, 3:30 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 0.2 hours before the alert went out and 160 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 00:00Z on 1997-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1617 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, Detroit, MI at 00:00Z on 1997-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
1617 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
602 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
122 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFWA 090014 RRA
SVRFWA
OHC171-090100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WAYNE IN
713 PM EST (813 PM EDT) TUE JUL 8 1997
 
THE NATIONAL WEATHER SERVICE IN FORT WAYNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM EST (900 PM EDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST OHIO
 
   ...WILLIAMS COUNTY
 
 
AT 810 PM EDT RADAR INDICATED A SEVERE THUNDERSTORM IN WILLIAMS COUNTY
OHIO NEAR BRYAN OHIO OR 30 MILES NORTHEAST OF FORT WAYNE.  THIS STORM
WAS MOVING TO THE SOUTHEAST AT 30 MPH.
 
THIS IS A DANGEROUS STORM!!  SEEK SHELTER IMMEDIATELY IF A STORM
THREATENS YOUR AREA!
 
 
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 8:35 PM EDTSevere Thunderstorm WarningIWXDefiance55 min
Jul 8, 9:40 PM EDTSevere Thunderstorm WarningIWXDefiance35 min
Jul 8, 10:10 PM EDTFlash Flood WarningIWXDefiance2 hr

Nearby

Severe 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.