Alert archive / Ohio / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 9, NWS Charleston, WV

May 7, 1986Ross County, Ohio

NWS Charleston, WV issued this severe thunderstorm warning at May 7, 1986, 1:42 AM EDT for Ross County, Ohio. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
May 7, 1986, 1:42 AM EDT (05:42 UTC)
Expired
May 7, 1986, 2:45 AM EDT
In force
63 min
Issued by
NWS Charleston, WV
Area
Whole counties

County Ross County, OH

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 5.7 hours before the alert went out and 116 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, Dayton/James M C, OH at 00:00Z on 1986-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1279 joules per kilogram.LCLLFCEL10008507005003002001001 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, Dayton/James M C, OH at 00:00Z on 1986-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.193958Sfc1 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
1279 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1370 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.6
Supercell composite
6.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCMH 070545
SVRCMH
OHC141-070645-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBUS OH
142 AM EDT WED MAY 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 245 AM EDT FOR PEOPLE IN THE FOLLOWING
COUNTY OF

OHIO...ROSS

AT 140 AM EDT COLUMBUS WEATHER RADAR SHOWED A SEVERE THUNDERSTORM
OVER WEST ROSS COUNTY OF SOUTH CENTRAL OHIO..MOVING EAST AT !45 MPH.

THESE THUNDERSTORMS MAY PRODUCE LARGE HAIL.. HEAVY RAIN.. DAMAGING
WINDS AND DANGEROUS LIGHTNING.

 SIMPSON

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 6, 8:46 PM EDTSevere Thunderstorm WarningRLXMarion, Union64 min
May 6, 9:52 PM EDTSevere Thunderstorm WarningRLXDelaware, Franklin48 min
May 7, 5:18 PM EDTSevere Thunderstorm WarningRLXFayette62 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1986Every severe thunderstorm warning in 1986

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.