Alert archive / Indiana / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 25, NWS Wilmington, OH

April 16, 1998Franklin County, Indiana

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 16, 1998, 4:14 PM EST for Franklin County, Indiana. It was in force for 56 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 16, 1998, 4:14 PM EST (21:14 UTC)
Expired
Apr 16, 1998, 5:10 PM EST
In force
56 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Franklin County, IN

The radar

The Cincinnati radar (KILN), 106 km from the middle of the area, began a volume at 21:16 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
Apr 16, 4:45 PM ESTHail 0.75Brookville, 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 watch it was issued in

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

IssuedProductOfficeLasted
Apr 16, 1:45 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.2 hours before the alert went out and 108 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 1998-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1998-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
986 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 16, 2:00 PM EST, 2 hours 14 minutes earlier.

Area forecast discussion, Apr 16, 2:00 PM EST, 2 hours 14 minutes before
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In the hours before

Local storm report, Apr 16, 1:08 PM EST, 3 hours 6 minutes before
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Special weather statement, Apr 16, 2:20 PM EST, 1 hour 54 minutes before
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Local storm report, Apr 16, 2:25 PM EST, 1 hour 49 minutes before
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Local storm report, Apr 16, 2:25 PM EST, 1 hour 49 minutes before
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Special weather statement, Apr 16, 4:13 PM EST, 1 minute before
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Special weather statement, Apr 16, 4:13 PM EST, 1 minute before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:07 PM ESTSevere Thunderstorm WarningILNRoss48 min
Apr 15, 10:42 PM ESTFlash Flood WarningILNButler118 min
Apr 16, 12:33 AM ESTFlash Flood WarningILNButler3 hr
Apr 16, 12:48 AM ESTFlash Flood WarningILNHamilton3 hr
Apr 16, 1:12 AM ESTFlash Flood WarningILNClermont, Clinton, Warren3 hr
Apr 16, 2:48 AM ESTFlash Flood WarningILNHamilton3 hr
Apr 16, 3:05 AM ESTFlash Flood WarningILNButler3 hr
Apr 16, 4:05 AM ESTFlash Flood WarningILNClermont, Clinton, Warren4 hr
Apr 16, 5:36 AM ESTFlash Flood WarningILNHamilton3 hr
Apr 16, 6:30 AM ESTFlash Flood WarningILNClermont, Warren3 hr
Apr 16, 6:36 AM ESTFlash Flood WarningILNFranklin3 hr
Apr 16, 7:11 AM ESTFlash Flood WarningILNFranklin2 hr
Apr 16, 3:35 PM ESTSevere Thunderstorm WarningILNMercer65 min
Apr 16, 4:44 PM ESTSevere Thunderstorm WarningILNPreble46 min
Apr 16, 5:00 PM ESTSevere Thunderstorm WarningILNMontgomery35 min
Apr 16, 4:10 AM ESTFlash Flood WarningILNCarroll3 hr
Apr 16, 6:30 AM ESTFlash Flood WarningILNCarroll, Gallatin, Owen3 hr
Apr 16, 7:34 AM ESTFlash Flood WarningILNKenton3 hr
Apr 15, 9:53 PM ESTFlash Flood WarningILNFranklin2 hr
Apr 15, 10:09 PM ESTSevere Thunderstorm WarningILNFranklin, Ripley46 min
Apr 15, 11:30 PM ESTFlash Flood WarningILNDearborn, Ripley2 hr
Apr 15, 11:47 PM ESTFlash Flood WarningILNFranklin118 min
Apr 16, 12:35 AM ESTFlash Flood WarningILNDearborn, Franklin, Ripley115 min
Apr 16, 2:35 AM ESTFlash Flood WarningILNDearborn, Franklin, Ripley3 hr
Apr 16, 4:10 AM ESTFlash Flood WarningILNOhio, Switzerland3 hr
Apr 16, 6:03 AM ESTFlash Flood WarningILNDearborn, Franklin, Ripley3 hr
Apr 16, 6:30 AM ESTFlash Flood WarningILNOhio3 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 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.