Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 129, NWS Wilmington, OH

July 18, 1997Hardin County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 18, 1997, 6:35 PM EDT for Hardin County, Ohio. It was in force for 50 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
Jul 18, 1997, 6:35 PM EDT (22:35 UTC)
Expired
Jul 18, 1997, 7:25 PM EDT
In force
50 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Hardin County, OH

What was reported inside it

TimeReportWhereRemark
Jul 18, 6:36 PM EDTThunderstorm Wind 50Ada, OHTrees and power lines 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
Jul 18, 5:30 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.6 hours before the alert went out and 138 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 12:00Z on 1997-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 772 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 12:00Z on 1997-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
772 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
1164 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KILN 182238 RRA
SVRILN
OHC065-182325-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
635 PM EDT FRI JUL 18 1997

THE NATIONAL WEATHER SERVICE IN WILMINGTON OH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 725 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN WEST CENTRAL OHIO

   ...HARDIN COUNTY
 
AT 635 PM EDT WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM IN EASTERN ALLEN COUNTY. THE STORM WAS MOVING EAST AT
30 MPH. THIS STORM DOWNED TREES IN ALLEN COUNTY AROUND 615 PM EDT.
TOWNS IN THE PATH OF THIS STORM INCLUDE ADA...ALGER AND KENTON.
 
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.

&
PADGETT

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 Jul 18, 2:50 PM EDT, 3 hours 45 minutes earlier.

Area forecast discussion, Jul 18, 2:50 PM EDT, 3 hours 45 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
245 AM EDT FRI JUL 18 1997

SAT PIX SHW FNT MVNG INTO NRN OH...NRN IN...TRW FIRING JUST EAST OF OUR
CWA AND ALSO NR ORD AREA IN NW IN. SVR TSTM WATCH 627 ISSUED...PROB
WILL SEE US IN BOX ALG FNT LATER THIS AFT. LOOKING AT ETA DATA...AREA
OF UPR DVRG AND THTA-E ADV JUST W OF LK ERIE AT 00Z. XPCT THIS AREA
WILL BE AREA OF DVLPMENT THIS EVE...TRW SHUD MV SE GENERALLY MISSING
OUR CWA TO THE EAST.

SO FOR THE REST OF THE EVE WILL BE DEALING W/ TRW MVNG IN FROM NW.
RIGHT NOW LOOKS LIKE CMH/DAY/LIMA/WHITEWATER VALLEY AREAS WILL NEED
MENTION OF PRECIP FOR EVENING. CVG/PORTSMOUTH AREA CAPPED NICELY AS
SEEN BY LACK OF CU.

TONITE...FNT (WHATS LEFT OF IT) DROPS INTO CNTRL OH AND PRETTY WELL
WASHES OUT BY 12Z SAT. SUGG CARRYING A 20% CHC FOR AREAS FROM
RICHMOND/DAY/CMH SOUTH FOR THE TONITE PERIOD.

SAT...LOOKS NICE. HUMIDITIES WILL FINALLY DROP SLIGHTLY AND TEMPS SHUD
STAY BLW 90. ETA SHWG QUITE A BIT OF LLVL MOIST IN THE SOUTHWEST WHCIH
CUD LEAD TO SM CU DVLPMENT AND MAYBE ISOLD RW?. WUD GO MOSTLY SUNNY
NORTH/PARTLY CLOUDY SOUTH. TEMPS RIGHT NR MOS GUID.

FARINA

In the hours before

Special weather statement, Jul 18, 6:10 PM EDT, 25 minutes before
INZ050-058-059-066-073-074-OHZ015-016-024>026-034-035-042>046-
051>056-060>065-070>074-190300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
611 PM EDT (511 PM EST) FRI JUL 18 1997

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR WEST CENTRAL AND
CENTRAL OHIO...THE MIAMI VALLEY...THE WHITEWATER VALLEY AND
PARTS OF SOUTHEAST INDIANA UNTIL 11 PM EDT(10 PM EST).

THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS ISSUED A SEVERE
THUNDERSTORM WATCH FOR ALL OF WESTERN AND CENTRAL OHIO UNTIL 11 PM
EDT(10 EST).  CITIES IN THE WATCH AREA INCLUDE COLUMBUS...DAYTON
...LIMA...HAMILTON...WILMINGTON AND RICHMOND.

STRONG TO SEVERE THUNDERSTORMS IN CENTRAL OHIO WILL CONTINUE TO
SINK TO THE SOUTH THROUGH THE EARLY EVENING.  ANOTHER BATCH OF
STRONG TO SEVERE THUNDERSTORMS STRETCHING FROM VAN WERT COUNTY
NORTHWESTWARD TO CHICAGO WILL MOVE TO THE SOUTHEAST INTO
EASTERN INDIANA AND WESTERN OHIO THROUGH THE EVENING.

THESE THUNDERSTORMS ARE OUT AHEAD OF A COLD FRONT DRAPPED FROM LAKE
ERIE WESTWARD THROUGH NORTHERN ILLINOIS.  THIS FRONT WILL PUSH INTO
THE REGION THROUGH TONIGHT. THE THUNDERSTORMS OVER NORTHERN INDIANA
AND ILLINOIS HAVE HAD A HISTORY OF LARGE HAIL AND WINDS IN EXCESS
OF 70 MPH.

REMEMBER...SEVERE THUNDERSTORMS PRODUCE LAGRE HAIL AND WINDS IN
EXCESS OF 58 MPH...AS WELL AS TORRENTIAL RAIN AND DEADLY LIGHTNING

KELLS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 5:09 PM EDTSevere Thunderstorm WarningILNVan Wert56 min
Jul 18, 5:17 PM EDTSevere Thunderstorm WarningILNFranklin58 min
Jul 18, 5:42 PM EDTSevere Thunderstorm WarningILNAllen53 min
Jul 18, 7:54 PM EDTSevere Thunderstorm WarningILNDelaware26 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.