Alert archive / Ohio / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 121, NWS Wilmington, OH

June 10, 1998Clermont County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jun 10, 1998, 12:43 AM EDT for Clermont County, Ohio. It was in force for 32 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 10, 1998, 12:43 AM EDT (04:43 UTC)
Expired
Jun 10, 1998, 1:15 AM EDT
In force
32 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Clermont County, OH

The radar

The Cincinnati radar (KILN), 50 km from the middle of the area, began a volume at 04:44 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

TimeReportWhereRemark
Jun 10, 1:10 AM EDTThunderstorm Wind 50Moscow, OHTrees 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.7 hours before the alert went out and 52 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 1998-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 612 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 1998-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 339 square meters per square second.1939587897Sfc1 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
612 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
458 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
339 m²/s²
0-3 km storm-relative helicity
396 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 9, 8:45 PM EDT, 3 hours 58 minutes earlier.

Area forecast discussion, Jun 9, 8:45 PM EDT, 3 hours 58 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
845 PM EDT TUE JUN 9 1998

CURRENT CONVECTIVE ACTIVITY AS DEPICTED BY SAT IMAGERY AND 88D RADARS
SHOW TWO AREAS OF FOCUS. THE NORTHERN AREA STRETCHES ALONG 85H TROUGH
FROM LK MI SEWRD INTO N-CTRL OH. THIS ACTIVITY ASSOCIATED WITH DEEP
LAYER MOISTURE...ESPECIALLY BETWEEN SFC AND 70H. BEST CONVECTION ALONG
THIS LINE BEING ASSISTED BY UPPER LEVEL JET AS DEPICTED IN Q-VECTOR AND
FRONTOGENETIC ANALYSIS IN 850-700 MB LAYER. THIS ELEVATED CONVECTION
PICKED UP WELL BY 12Z ETA MODEL AND IS EXPECTED TO SLIDE SLOWLY OFF TO
THE EAST OVER NIGHT. THUS FEEL THE THREAT OF TSTRM ACTIVITY ACROSS
NORTHERN HALF OF ILN FA FOR TONIGHT IS OVER. SHOWER ACTIVITY SHOULD BE
RESTRICTED TO AREAS E OF CMH FOR THE REMAINDER OF NIGHT AS OBSERVED
WITH ILN 88D.

ACTIVITY ACROSS SRN IL APPEARS TO BE SFC BASED AND SHOULD REMAIN WELL S
AND SW OF FA. THUS DO NOT SEE THREAT FOR TSTRM ACTIVITY REMAINDER OF FA
OVERNIGHT.

LOTS OF FOG CURRENTLY ACROSS FA DO TO QUASI-STATIONAIRY WRM FRNT. FEEL
AT LEAST PATCHY DENSE FOG LIKELY ACROSS MOST OF FA TONIGHT. SHOULD
INCLUDE DAY AND CMH. TEMPS LOOK GOOD.

DISTEFANO

In the hours before

Local storm report, Jun 10, 12:40 AM EDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
1240 AM EDT WED JUN 10 1998

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

1154 PM                              OH   WIND DAMAGE
06/09/98   HAMILTON                       70 - 80 MPH WINDS IN
                                          WESTERN HILLS

1215 AM    ALEXANDRIA                KY   1 INCH HAIL
06/10/98   CAMPBELL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 11:50 PM EDTSevere Thunderstorm WarningILNHamilton35 min
Jun 10, 12:52 AM EDTTornado WarningILNClermont48 min
Jun 10, 1:05 AM EDTSevere Thunderstorm WarningILNPike35 min
Jun 10, 1:18 AM EDTSevere Thunderstorm WarningILNBrown47 min
Jun 10, 2:06 AM EDTFlash Flood WarningILNBrown3 hr
Jun 10, 2:50 AM EDTSevere Thunderstorm WarningILNButler30 min
Jun 10, 3:01 AM EDTSevere Thunderstorm WarningILNAdams49 min
Jun 10, 3:44 AM EDTSevere Thunderstorm WarningILNClermont26 min
Jun 10, 4:20 AM EDTSevere Thunderstorm WarningILNBrown30 min
Jun 10, 4:26 AM EDTSevere Thunderstorm WarningILNAdams64 min
Jun 9, 11:57 PM EDTSevere Thunderstorm WarningILNCampbell, Kenton48 min
Jun 10, 1:41 AM EDTSevere Thunderstorm WarningILNMason39 min
Jun 10, 1:54 AM EDTSevere Thunderstorm WarningILNLewis46 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1998Every 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.