Alert archive / Ohio / Tornado Warnings in 1998

Tornado Warning 3, NWS Wilmington, OH

April 8, 1998Clinton County, Highland County, Ohio

NWS Wilmington, OH issued this tornado warning at Apr 8, 1998, 3:29 AM EDT for Clinton County, Highland County, Ohio. It was in force for 31 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, 3:29 AM EDT (07:29 UTC)
Expired: Apr 8, 1998, 4:00 AM EDT
In force: 31 min
Issued by: NWS Wilmington, OH
Area: Whole counties

Counties Clinton County, OH, Highland County, OH

The radar

The Cincinnati radar (KILN), 17 km from the middle of the area, began a volume at 07:32 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
Apr 8, 4:00 AM EDT	Hail 0.88	Hillsboro, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 8, 2:00 AM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 7.5 hours before the alert went out and 17 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: 1470 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 385 m²/s²
0-3 km storm-relative helicity: 517 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

830 
WFUS01 KILN 080730 RRA
TORILN
OHC027-071-080800-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
329 AM EDT WED APR 8 1998

THE NATIONAL WEATHER SERVICE IN WILMINGTON OH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 400 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHWESTERN OHIO

   ...CLINTON COUNTY

IN SOUTH CENTRAL OHIO

   ...HIGHLAND COUNTY
 
AT 325 AM WEATHER SERVICE DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM
IN SOUTHERN CLINTON COUNTY JUST EAST OF BLANCHESTER. THIS STORM
WAS MOVING TO THE EAST-NORTHEAST AT 40 MPH AND WILL TRACK ACROSS
SOUTHERN CLINTON COUNTY AND NORTHERN HIGHLAND COUNTY. SOME TOWNS IN
THE PATH OF THIS STORM INCLUDE...WESTBORO...NEW VIENNA...LEESBURG
AND GREENFIELD.
 
IF YOU ARE IN THE PATH OF THIS STORM...MOVE INSIDE A STRONG
BUILDING. STAY AWAY FROM WINDOWS SINCE THEY CAN EASILY SHATTER IN
SEVERE THUNDERSTORM WINDS. DO NOT USE TELEPHONES OR APPLIANCES
UNLESS ABSOLUTELY NECESSARY UNTIL THIS STORM HAS PASSED.

RANDALL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 2:27 AM EDT	Severe Thunderstorm Warning	ILN	Hamilton	43 min
Apr 8, 2:53 AM EDT	Severe Thunderstorm Warning	ILN	Clermont	47 min
Apr 8, 3:17 AM EDT	Severe Thunderstorm Warning	ILN	Hamilton	63 min
Apr 8, 3:29 AM EDT	Severe Thunderstorm Warning	ILN	Clinton, Highland	31 min
Apr 8, 3:51 AM EDT	Flash Flood Warning	ILN	Clermont, Hamilton	3 hr
Apr 8, 4:26 AM EDT	Severe Thunderstorm Warning	ILN	Ross	59 min
Apr 8, 1:55 PM EDT	Severe Thunderstorm Warning	ILN	Franklin	50 min
Apr 8, 2:10 PM EDT	Severe Thunderstorm Warning	ILN	Delaware	50 min
Apr 8, 2:29 PM EDT	Severe Thunderstorm Warning	ILN	Licking	41 min
Apr 8, 4:33 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	62 min

Nearby

Tornado Warnings in Ohio, 1998 Every tornado warning in 1998 Tornadoes 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.