Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 18, NWS Wilmington, OH

April 8, 1998Wayne County, Indiana

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 8, 1998, 8:33 PM EST for Wayne County, Indiana. It was in force for 37 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: Apr 8, 1998, 8:33 PM EST (01:33 UTC)
Expired: Apr 8, 1998, 9:10 PM EST
In force: 37 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Wayne County, IN

What was reported inside it

Time	Report	Where	Remark
Apr 8, 8:58 PM EST	Hail 1.75	Hagerstown, IN

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, 1.6 hours before the alert went out and 114 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: 149 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1572 m above ground
0-6 km bulk shear: 85 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 Apr 8, 7:10 PM EST, 1 hour 23 minutes earlier.

Area forecast discussion, Apr 8, 7:10 PM EST, 1 hour 23 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
810 PM EDT WED APR 8 1998

BRIEF RESPITE FROM SHRA/TSRA ACRS CWA COMING TO AN END. UPSTREAM TROF
AT MID/UPR LVLS DIGGING INTO OH VLY AND ASSOCIATED SFC FRNT PRESSING
TWD REGION FROM W...AND WDSPRD SHRA/TSRA HAVE DEVELOPED ACRS W/CNTL
KY...S IND AND THRU AREAS WELL S/SW OF OH VLY. SHRA/TSRA WL OVERSPREAD
CWA FROM SW TO NE DURG NEXT FEW HRS...AND CATEGORICAL POPS IN ORDER FOR
ALL AREAS XCPT PERHAPS FAR N/NW...WHERE LIKELY POPS MAY SUFFICE.

CONDITIONS WL REMAIN FAVORABLE FOR SVR TSTMS TIL WELL AFTER MIDNITE...
AND MENTION OF SVR IN ORDER ACRS CNTL/S COUNTIES. ACRS OH AREA 1/5
COUNTIES N OF DAY-CMH...SFC FRNT ACRS N OH WL SETTLE INTO REGION FROM N
OVERNITE AND MAY LIMIT SVR POTENTIAL SOMEWHAT.

ALSO...MENTION OF HVY RAIN IN ORDER FOR AT LEAST CNTL/S SECTIONS.

CURRNT FCST LOS MAY BE A BIT ON THE LO SIDE ACRS CNTL/S COUNTIES...
TMPS IN 40S/50S WELL UPSTRM AND MAY NOT ARRIVE BEFORE 12Z.

ALSO...WINDS WL SHIFT TO W ACRS CNTL/S OH LATER TONITE...NOT INTO
N PER CURRNT FCSTS.

ROWLEY

In the hours before

Special weather statement, Apr 8, 4:00 PM EST, 4 hours 33 minutes before

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Special weather statement, Apr 8, 4:25 PM EST, 4 hours 8 minutes before

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Special weather statement, Apr 8, 4:25 PM EST, 4 hours 8 minutes before

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Local storm report, Apr 8, 4:45 PM EST, 3 hours 48 minutes before

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Local storm report, Apr 8, 4:45 PM EST, 3 hours 48 minutes before

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Local storm report, Apr 8, 7:05 PM EST, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
805 PM EDT WED APR 08 1998

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

0204 PM    FLINT                     OH   .75 INCH HAIL
04/08/98   FRANKLIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 9:25 PM EST	Severe Thunderstorm Warning	ILN	Logan	30 min
Apr 8, 9:46 PM EST	Severe Thunderstorm Warning	ILN	Hardin	54 min
Apr 8, 11:33 PM EST	Flash Flood Warning	ILN	Logan, Shelby	117 min
Apr 9, 4:49 AM EST	Flash Flood Warning	ILN	Shelby	116 min
Apr 9, 5:41 AM EST	Flash Flood Warning	ILN	Logan	119 min
Apr 9, 12:05 PM EST	Flash Flood Warning	ILN	Fayette, Union, Wayne	4 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 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.