Alert archive / Ohio / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 64, NWS Wilmington, OH

May 19, 1998Hardin County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at May 19, 1998, 8:08 PM EDT for Hardin County, Ohio. It was in force for 57 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: May 19, 1998, 8:08 PM EDT (00:08 UTC)
Expired: May 19, 1998, 9:05 PM EDT
In force: 57 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Hardin County, OH

The radar

The Cincinnati radar (KILN), 139 km from the middle of the area, began a volume at 00:11 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 19, 8:14 PM EDT	Hail 0.75	Roundhead, OH

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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.1 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1270 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1675 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCVG 200012 RRA
SVRILN
OHC065-200105-

BULLETIN - IMMEDIATE BROADCAST REQUESTED...RETRANSMITTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
808 PM EDT TUE MAY 19 1998

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

*SEVERE THUNDERSTORM WARNING FOR...
  HARDIN COUNTY IN WEST CENTRAL OHIO.

* EFFECTIVE UNTIL 905 PM EDT.

* AT 805 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM 18 MILES WEST OF KENTON MOVING EAST AT 20
  MPH.

* SOME LOCATIONS AFFECTED...
        ROUNDHEAD               BY 811 PM EDT..
        MCGUFFEY                BY 818 PM EDT..
        KENTON                  BY 830 PM EDT


THIS THUNDERSTORM IS CAPABLE OF PRODUCING EXTREMELY LARGE HAIL
WHICH MAY CAUSE SEVERE DAMAGE TO PROPERTY AND SERIOUS INJURY.

IF YOU ARE CAUGHT OUTSIDE...SEEK REFUGE FROM THE STORM IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DANGEROUS LIGHTNING ARE ALL LIKELY.
2
WILKINSON
$$
...RETRANS FOR OH WARNING POINT...

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 May 19, 2:50 PM EDT, 5 hours 18 minutes earlier.

Area forecast discussion, May 19, 2:50 PM EDT, 5 hours 18 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
250 PM EDT TUE MAY 19 1998

LTST SFC ANLYS SHWG MESO LOW OVR NRN MO WITH FNTL BNDRY XTNDG NE THROUGH
CNTRL IA AND INTO SRN WI. APPARENT DEWPT BNDRY JUST TO OUR W ACRS ERN IND
WITH DWPTS ACRS WRN IND AND IL IN THE MID TO UPR 60S WHILE DEWPTS ACRS OH
IN THE MID 50S TO NEAR 60. JUST A FEW CI ACRS AREA ATTM WHICH HAS ALLOWED
TMPS TO CLIMB INTO THE MIDDLE TO UPR 80S MOST LOCATIONS. TESTING OUT NEW
UPR AIR INSTRUMENTS HERE SO HAV AN 18Z RAOB AVBL WHICH HAD A CAPE OF
1900 AND LI OF -7 BUT A PRETTY GUD CAP WAS PRESENT JUST BLO 700 MB.
HIGHER DEWPTS TO THE W SHUD PUSH SLOWLY E WITH INSTBLTIES INCRSG THRU
RMNDR OF AFTN. HOWEVER WITH LACK OF TRIGGER...WL BE HARD TO GET ANYTHING
GOING. BEST BET WL BE THIS EVNG AS BETTER THETAE ADVT DVLPS ACRS WRN
PORTIONS OF FA AND REMNANTS OF CRNT CONV FIRING OVR SRN WI/NRN IL TRACK
SE TWD CWA. BASED ON THIS...WL PRBLY NEED TO CARRY CHC POPS THIS EVNG
INTO TNGT. CDFNT PROGD TO PUSH S ACRS FA THRU WED AFTN...REACHING SRN
PORTIONS OF FA BY 00Z. WITH THIS...INSTBLTY AXIS ALSO PUSHES INTO SRN
FA SO LUKS LIKE BEST CHC FOR TSTMS ON WED WL BE ACRS SRN 1/2 FA. MAY
SEE SOME PCPN LINGER INTO WED EVNG ACRS S OTHWS...XPCT PRTLY CLDY WED
NGT INTO THUR AS WK SFC RDG NOSES DOWN INTO RGN. FWC/FAN TMPS FAIRLY
CLOSE AND LUK RSNBL.

DAY 63/87/58/76 4300
CMH 61/86/58/76 3300
CVG 63/87/60/78 4410
PMH 62/87/59/79 3410

LOTT

In the hours before

Special weather statement, May 19, 6:44 PM EDT, 1 hour 24 minutes before

INZ050-058-059-200500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
643 PM EDT (543 PM EST) TUE MAY 19 1998

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR EAST-CENTRAL
   INDIANA UNTIL MIDNIGHT EST...

THIS WATCH INCLUDES RICHMOND...CONNERSVILLE...AND LIBERTY.

THUNDERSTORMS WERE DEVELOPING IN AN VERY UNSTABLE ENVIRONMENT LATE
THIS AFTERNOON ACROSS NORTHERN AND WESTERN INDIANA.  THESE STORMS
HAVE A HISTORY OF LARGE HAIL AND DAMAGING WINDS...AND ARE EXPECTED TO
TRACK INTO EAST-CENTRAL INDIANA AROUND AND AFTER SUNSET.

RESIDENTS OF EAST-CENTRAL INDIANA SHOULD KEEP AN EYE TO THE
NORTHWESTERN SKY AND STAY TUNED TO NOAA WEATHER RADIO.

WILKINSON

Local storm report, May 19, 7:50 PM EDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
750 PM EDT TUE MAY 19 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0747 PM    MONTEZUMA                 OH   .75 INCH HAIL
05/19/98   MERCER                         REPORTED BY SPOTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 8:00 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize	60 min
May 19, 8:54 PM EDT	Severe Thunderstorm Warning	ILN	Darke	56 min
May 19, 9:13 PM EDT	Severe Thunderstorm Warning	ILN	Clark	62 min
May 19, 10:09 PM EDT	Severe Thunderstorm Warning	ILN	Greene	51 min
May 19, 11:51 PM EDT	Severe Thunderstorm Warning	ILN	Clermont	59 min
May 20, 12:15 AM EDT	Severe Thunderstorm Warning	ILN	Brown	60 min
May 20, 1:08 AM EDT	Flash Flood Warning	ILN	Hamilton	2 hr

Nearby

Severe Thunderstorm Warnings in Ohio, 1998 Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.