Alert archive / Ohio / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 77, NWS Wilmington, OH

May 23, 1998Clermont County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at May 23, 1998, 4:34 PM EDT for Clermont County, Ohio. 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: May 23, 1998, 4:34 PM EDT (20:34 UTC)
Expired: May 23, 1998, 5:30 PM EDT
In force: 56 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 20:37 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 23, 4:36 PM EDT	Hail 1	Milford, OH	Hail covered the ground in Milford.

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 12:00Z, 8.6 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 198 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 May 23, 3:20 PM EDT, 1 hour 14 minutes earlier.

Area forecast discussion, May 23, 3:20 PM EDT, 1 hour 14 minutes before

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In the hours before

Local storm report, May 23, 12:43 PM EDT, 3 hours 51 minutes before

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Local storm report, May 23, 12:43 PM EDT, 3 hours 51 minutes before

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Special weather statement, May 23, 4:08 PM EDT, 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 4:54 AM EDT	Severe Thunderstorm Warning	ILN	Grant	61 min
May 23, 12:00 PM EDT	Severe Thunderstorm Warning	ILN	Carroll	45 min

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.