Alert archive / Ohio / Tornado Warnings in 1991

Tornado Warning 3, NWS Wilmington, OH

July 8, 1991Greene County, Ohio

NWS Wilmington, OH issued this tornado warning at Jul 8, 1991, 4:16 AM EDT for Greene County, Ohio. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Jul 8, 1991, 4:16 AM EDT (08:16 UTC)
Expired
Jul 8, 1991, 4:45 AM EDT
In force
29 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Greene County, OH

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 8.3 hours before the alert went out and 35 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 1991-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2675 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 1991-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
2675 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1471 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDAY 080816
TORDAY
OHC057-080845-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE DAYTON OH
416 AM EDT MON JUL 8 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 445 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE STATE OF OHIO
      GREENE

AT 410 AM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A POSSIBLE
TORNADO MOVING INTO NORTHWESTERN GREENE COUNTY. THE TORNADO IS
MOVING SOUTHEAST AT 40 MPH.

IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE TO BE IS IN
A BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...FIND SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

IF THREATENING WEATHER APPROACHES... YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY AND ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY
YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE
OFFICE.

 PADGETT

What forecasters said that day

The local office's own words before this tornado 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, Jul 8, 2:57 AM EDT, 1 hour 19 minutes before
OHZ006-007-009-011-080800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS OH
255 AM EDT MON JUL 8 1991

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF CENTRAL OHIO WEST
OF A LINE FROM MARION TO COLUMBUS TO CHILLICOTHE UNTIL 700 AM EDT.

AT 250 AM NATIONAL WEATHER SERVICE RADAR SHOWED A LARGE AREA OF
THUNDERSTORMS OVER NORTWEST OHIO WEST OF A LINE FROM TOLEDO TO
RICHMOND INDIANA. THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 35 MILES
AN HOUR AND WILL REACH THE COLUMBUS AREA BY 430 AM.

THESE THUNDERSTORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS AND
LARGE HAIL. IF THREATENING WEATHER APPROACHES MOVE TO A SAFE PLACE.

LISTEN TO NOAA WEATHER RADIO OR LOCAL RADIO AND TELEVISION STATIONS
FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

SMITH
Special weather statement, Jul 8, 3:06 AM EDT, 1 hour 10 minutes before
OHZ008-KYZ005-INZ013-080800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CINCINNATI OH
300 AM EDT MON JUL 8 1991

THE NAITONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WATCH FOR ALL OF SOUTHWEST OHIO UNTIL 700 AM EDT. THIS INCLUDES
ADAMS...BROWN...BUTLER...CLERMONT...CLINTON...HAMILTON...HIGHLAND
AND WARREN COUNTIES AS WELL AS THE CITY OF CINCINNATI.

A LINE OF SEVERE THUNDERSTORMS IS DROPPING SOUTHEAST OUT OF
NORTHERN INDIANA AND OHIO AT 45 MILES AN HOUR.  THIS LINE HAS
PRODUCED EXTENSIVE WIND DAMAGE IN INDIANA DURING THE PAST SEVERAL
HOURS. HIAL UP TO GOLFBALL SIZE ALONG WITH TORRENTIAL RAINS HAVE
ALSO BEEN REPORTED WITH THIS LINE OF STORMS.

PERSONS IN SOUTHWEST OHIO SHOULD PREPARE FOR THUNDERSTORMS WHICH
MAY PRODUCE WINDS IN EXCESS OF 60 MILES AN HOUR...LARGE HAIL...
FREQUENT LIGHTNING AND VERY HEAVY DOWNPOURS OF RAIN.

ALL PERSONS IN THE TRISTATE AREA SHOULD REMAIN ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS FOR THE NEXT SEVERAL HOURS.  IF
THUNDERSTORMS SHOULD OCCUR THIS MORNING IN YOUR LOCATION...TAKE
TAKE SHELTER WITHOUT DELAY.

STAY TUNED TO NOAA WEATHER RADIO OR THE COMMERCIAL MEDIA FOR
ADDITIONAL STATEMENTS AND POSSIBLE WARNINGS.

PYTLAK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 10:50 PM EDTSevere Thunderstorm WarningILNKnox40 min
Jul 8, 2:06 AM EDTSevere Thunderstorm WarningILNMercer, Van Wert54 min
Jul 8, 2:41 AM EDTSevere Thunderstorm WarningILNAllen64 min
Jul 8, 3:04 AM EDTSevere Thunderstorm WarningILNAuglaize56 min
Jul 8, 3:12 AM EDTSevere Thunderstorm WarningILNMercer63 min
Jul 8, 3:58 AM EDTSevere Thunderstorm WarningILNMiami62 min
Jul 8, 4:19 AM EDTTornado WarningILNMiami26 min
Jul 8, 5:54 AM EDTSevere Thunderstorm WarningILNButler66 min
Jul 8, 9:31 AM EDTSevere Thunderstorm WarningILNButler, Hamilton59 min
Jul 8, 9:31 AM EDTSevere Thunderstorm WarningILNClermont59 min

Nearby

Tornado Warnings in Ohio, 1991Every tornado warning in 1991Tornadoes in 1991

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.