Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 80, NWS Wilmington, OH

June 21, 1997Allen County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jun 21, 1997, 9:18 PM EDT for Allen County, Ohio. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 21, 1997, 9:18 PM EDT (01:18 UTC)
Expired
Jun 21, 1997, 9:45 PM EDT
In force
27 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Allen County, OH

What was reported inside it

TimeReportWhereRemark
Jun 21, 9:30 PM EDTThunderstorm Wind 50Countywide, OHNumerous trees downed

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 21, 6:15 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.3 hours before the alert went out and 151 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 1997-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1325 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 1997-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 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
1325 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1233 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

999 
WUUS01 KILN 220117 RRA
SVRILN
OHC003-220145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
918 PM EDT SAT JUN 21 1997
 
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL OHIO
 
   ...ALLEN COUNTY
 
AT 915 PM EDT...WEATHER SERVICE RADAR INDICATED A POSSIBLE SEVERE
THUNDERSTORM IN SOUTH CENTRAL ALLEN COUNTY. THIS STORM HAD THE POTENTIAL
TO PRODUCE DAMAGING WINDS IN EXCESS OF 55 MPH...DANGEROUS LIGHTNING AND
TORRENTIAL RAIN.
 
THIS STORM WAS MOVING EAST NORTHEAST AT 20 MPH AND SHOULD REACH
WESTMINSTER BY 930 PM EDT.
 
IT IS DANGEROUS TO BE OUTDOORS WHILE A SEVERE THUNDERSTORM IS IN
PROGRESS. DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DEADLY LIGHTNING ARE ALL POSSIBLE. SEEK SHELTER IN A BUILDING OR
A VEHICLE. IF YOU ARE CAUGHT IN THE OPEN...STAY AWAY FROM TOWERS
AND TALL TREES. CROUCH NEAR THE GROUND AND COVER YOUR HEAD.
 
DIAN

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.

NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 21, 3:15 PM EDT, 6 hours 3 minutes earlier.

Area forecast discussion, Jun 21, 3:15 PM EDT, 6 hours 3 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
315 PM EDT SAT JUN 21 1997

LTST SFC ANLYS SHWS PREVIOUS BNDRYS WEAKENING OR DIFFICULT TO FIND.
ACTIVITY OVR SRN IN/NRN KY DVLPED ALNG BNDRY...BUT LOOKS LIKE THIS IS
ABOUT IT AS FAR AS TRIGGER MECHANISMS GO. KEEPING AN EYE OUT FOR ADDTL
BNDRY DVLPMT...BUT IF NONE DVLP ILN FA NOT LIKELY TO SEE ANY STRONG
CONVECTION...LET ALONE SVR.

BIGGEST CONCERN ATTM IS HEAVY RAIN AS TSTMS ARE VRY SLOW MOVG. BIGGEST
THREAT APRS TO BE IN NRN KY PTN OF ILN FA FOR PSBL FLOODING WTH THIS
BNDRY INDUCED CONVECTION. REST OF FA JUST SHUD SE ISOLD TO WIDELY SCT
SHRA OR EVEN TSRA.

LOOKING AT PCPN EFFICIENCY AND MCS POTL...APRS BEST THETA E AXIS...JET
INTERACTION AND MOISTURE CONVERGENCE POINTS TWD CNTRL IN INTO NW OH AND
LWR MI. IF MCS DOES DVLP...GRTST THREAT APRS TO BE LIMA AREA OF ILN FA.

NGM REALLY DRIES OUT AND STABILIZES OH VLY FOR SUN...MAYBE JUST SOME
REMAINING DVLPMNT ESPCY CNTRL AND S CNTRL OH. ETA DESTABILIZES AREA
AGAIN FOR SUN AND KEEPS AREA MOIST. PREFER SOME COMPROMISE BTWN THE
2...BUT LEANING MORE TOWARD NGM.

DAY 069/088/068 431
CVG 070/089/068 531
CMH 070/090/069 331

DIAN

In the hours before

Special weather statement, Jun 21, 5:03 PM EDT, 4 hours 15 minutes before
INZ050-058-059-066-073>075-080-OHZ015-016-024>026-034-035-
042>046-051>056-060>065-070>073-077-078-KYZ091>093-220400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
500 PM EDT (400 PM EST) SAT JUN 21 1997

...SEVERE THUNDERSTORMS POSSIBLE THIS EVENING...

VERY WARM AND UNSTABLE AIR ACROSS THE UPPER OHIO VALLEY WILL COMBINE
WITH ABUNDANT MOISTURE AND INCREASE THE POTENTIAL FOR SEVERE
THUNDERSTORM ACTIVITY INTO THIS EVENING ACROSS MUCH OF OHIO AND FAR
NORTHERN KENTUCKY THROUGH TONIGHT.

THE GREATEST POTENTIAL FOR SEVERE THUNDERSTORMS EXISTS ACROSS EASTERN
INDIANA AND WESTERN OHIO...AND AS FAR WEST AND SOUTH AS CENTRAL OHIO
AND EXTREME NORTHERN KENTUCKY.

CITIES INCLUDED IN THE SEVERE THUNDERSTORM OUTLOOK AREA INCLUDE...
VAN WERT...LIMA...DAYTON...SPRINGFIELD...COLUMBUS AND CINCINNATI IN
OHIO...AS WELL AS RICHMOND AND BROOKVILLE INDIANA AND COVINGTON
KENTUCKY.

THE MAIN THREAT FROM THUNDERSTORMS THIS EVENING WILL BE DAMAGING WINDS.
AS THE THUNDERSTORMS WILL BE SLOW MOVING...THE POTENTIAL IS ALSO HIGH
FOR HEAVY RAIN AND FLOODING.

IF YOU ARE PLANNING OUTDOOR ACTIVITIES INTO THIS EVENING...LISTEN TO
NOAA WEATHER RADIO FOR THE LATEST INFORMATION ON WEATHER CONDITIONS
ACROSS THE REGION. SKYWARN AMATEUR RADIO OPERATORS MAY NEED TO BE
ACTIVATED LATER THIS EVENING.

DIAN
Special weather statement, Jun 21, 6:12 PM EDT, 3 hours 6 minutes before
INZ050-058-059-OHZ015-016-024>026-034-035-042>044-051-060-061-
220315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
613 PM EDT (513 PM EST) SAT JUN 21 1997

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 11 PM EDT (10 PM
EST) FOR WEST CENTRAL OHIO AND EAST CENTRAL INDIANA...

VERY WARM AND MOIST AIR OVER THE UPPER OHIO VALLEY COMBINED WITH
ABUNDANT LOW LEVEL MOISTURE TO INCREASE THE THREAT FOR SEVERE
THUNDERSTORMS THROUGH 11 PM EDT (10 PM EST) FOR WEST CENTRAL OHIO
AND EAST CENTRAL INDIANA.

CITIES INCLUDED IN THE WATCH INCLUDE...RICHMOND INDIANA...VAN
WERT...LIMA...ST MARYS...KENTON...AND DAYTON OHIO.

A LINE OF THUNDESTORMS WILL PUSH FROM WEST TO EAST THROUGH
EASTERN INDIANA AND WESTERN OHIO THROUGH THE EVENING HOURS. THESE
THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE SEVERE THUNDERSTORM
WINDS IN EXCESS OF 55 MPH AND TORRENTIAL RAIN.

STAY TUNED TO NOAA WEATHER RADIO OR THE COMMERCIAL MEDIA FOR
POSSIBLE WARNINGS OR ADDITIONAL STATEMENTS.

IT IS DANGEROUS TO BE OUTDOORS WHILE A SEVERE THUNDERSTORM IS IN
PROGRESS. DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DEADLY LIGHTNING ARE ALL POSSIBLE. SEEK SHELTER IN A BUILDING OR A
VEHICLE. IF YOU ARE CAUGHT IN THE OPEN...STAY AWAY FROM TOWERS AND
LARGE TREES. CROUCH NEAR THE GROUND AND COVER YOUR HEAD.

DIAN

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 8:48 PM EDTSevere Thunderstorm WarningILNAuglaize62 min
Jun 21, 9:26 PM EDTSevere Thunderstorm WarningILNHardin34 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.