Alert archive / Ohio / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 2, NWS Wilmington, OH
NWS Wilmington, OH issued this severe thunderstorm warning at May 14, 1987, 5:18 PM EDT for Knox County, Ohio. It was in force for 62 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 14, 1987, 5:18 PM EDT (21:18 UTC)
- Expired
- May 14, 1987, 6:20 PM EDT
- In force
- 62 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
County Knox County, OH
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 14, 5:18 PM EDT | Thunderstorm Wind 0 | Knox, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Dayton/James M C, OH (KDAY), launched 12:00Z, 9.3 hours before the alert went out and 161 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.
- Mixed-layer CAPE
- 92 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 1109 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMFD 142117 SVRMFD OHC083-142220- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MANSFIELD OH ISSUED BY COLUMBUS 518 PM EDT THU MAY 14 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 620 PM EDT FOR THE FOLLOWING COUNTY OF CENTRAL OHIO... KNOX AT 514 PM EDT WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM IN SOUTHERN KNOX COUNTY. THIS STORM WAS MOVING EAST AT 20 MPH AND WILL MOVE FROM CENTERBURG THROUGH UTICA DURING THE NEXT 30 MINUTES. THIS THUNDERSTORM MAY PRODUCE LARGE HAIL...HEAVY RAIN...DAMAGING WINDS AND DANGEROUS LIGHTNING. SEEK SHELTER FROM THIS STORM. FENBERS
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.
In the hours before
Special weather statement, May 14, 3:13 PM EDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBUS OH 513 PM EDT SAT MAY 2 1987 STRONG THUNDERSTORMS WERE BUILDING IN MUCH OF OHIO THIS AFTERNOON. AT 310 PM EDT COLUMBUS WEATHER RADAR INDICATED NUMEROUS THUNDERSTORMS HAD DEVELOPED OR INCREASED OVER MANY SECTIONS OF THE STATE WITHIN THE LAST HOUR AND A HALF. THE HEAVIEST STORMS WERE IN NORTH CENTRAL AND WEST CENTRAL OHIO AND WERE APPROACHING MADISON... UNION... AND MARION COUNTIES OF CENTRAL OHIO. THE STORMS WERE MOVING EAST AT 20 MPH. HEAVY DOWNPOURS ALONG WITH THE SLOW MOVEMENT OF THE STORMS MAY CAUSE SOME TEMPORARY BACKUP OF WATER IN STORM DRAINS. FENBERS
Nearby
Severe Thunderstorm Warnings in Ohio, 1987Every severe thunderstorm warning in 1987
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.