Alert archive / Ohio / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 61, NWS Cleveland, OH

June 11, 1986Mahoning County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jun 11, 1986, 5:14 PM EDT for Mahoning County, Ohio. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Jun 11, 1986, 5:14 PM EDT (21:14 UTC)
Expired
Jun 11, 1986, 6:15 PM EDT
In force
61 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Mahoning 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

Pittsburgh, PA (KPIT), launched 12:00Z, 9.2 hours before the alert went out and 88 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, Pittsburgh, PA at 12:00Z on 1986-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1526 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, Pittsburgh, PA at 12:00Z on 1986-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
1526 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
539 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KYNG 112114
SVRYNG
OHC099-112215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
514 PM EDT WED JUN 11 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 615 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTHEAST OHIO...MAHONING

AT 510PM RADAR INDICATED A POSSIBLE SEVERE THUNDERSTORM IN
SOUTHWEST MAHONING COUNTY NEAR CANFIELD OHIO.  LARGE HAIL AND
BRIEF VERY HEAVY RAINS ARE POSSIBLE WITH THIS STORM.

MOVEMENT OF THE STORM WAS EAST AT 25 MPH AND WILL MOVE TOWARD
SOUTH YOUNGSTOWN.

WHEN A THUNDERSTORM THREATENS ALL LIGHTNING EXPERTS AGREE THAT THE
MOST IMPORTANT SINGLE xTHING YOU CAN DO IS TO GET INSIDE A HOME OR
LARGE BUILDING.  IF YOU DO NOT HAVE TIME TO REACH A SAFE BUILDING..
AVOID OPEN FIELDS SUCH AS GOLF COURSES.. BASEBALL FIELDS.. BEACHES
OR FISHING FROM A SMALL BOAT OR PIERS.

 TRP

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, Jun 11, 1:11 PM EDT, 4 hours 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
100 PM EDT WED JUN 11 1986

...HEAVY THUNDERSTORMS MOVING TOWARD NORTHWEST PENNSYLVANIA...

AT 1 PM WEATHER RADAR SHOWED VERY HEAVY THUNDERSTORMS ACROSS MUCH OF
NORTHEAST OHIO..EXTENDING EAST INTO PARTS OF WEST CENTRAL PENNSYLVANIA.

THESE STORMS PRODUCED VERY HEAVY RAIN IN PARTS OF NORTHEAST OHIO..
AROUND 1 INCH IN A VERY SHORT TIME..CAUSING SOME LOWLAND FLOODING.

THE THUNDERSTORMS WERE MOVING TO THE EAST AROUND 25 MILES AN HOUR
AND WILL BE MOVING INTO PARTS OF NORTHWEST PENNSYLVANIA LATER THIS
AFTERNOON.

A FLOOD WATCH CONTINUES IN EFFECT FOR PARTS OF NORTHWEST AND WEST CENTRAL
PENNSYLVANIA..FOR THIS AFTERNOON AND TONIGHT..SO BE PREPARED IF HEAVY
RAINS MOVE INTO YOUR AREA.
Special weather statement, Jun 11, 3:49 PM EDT, 1 hour 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
349 PM ED WED JUN 11 1986

STRONG THUNDERSTORMS AND HEAVY RAIN WILL CONTINUE TO THREATEN OHIO
THROUGH THE AFTERNOON AND EVENING.

A SPECIAL MARINE WARNING WILL BE IN EFFECT ON LAKE ERIE FROM MAUMEE BAY
TO AVON POINT UNTIL 445 THIS AFTERNOON, AND ANOTHER WILL BE IN EFFECT
FROM FAIRPORT HARBOR TO CONNEAUT UNTIL 530 THIS EVENING.

A SEVERE THUNDERSTORM WATCH WILL CONTINUE IN EFFECT FOR MUCH OF
NORTHERN OHIO UNTIL NINE O' CLOCK THIS EVENING.  STRONG WINDS AND LARGE
HAIL WILL BE A REAL THREAT IN THESE AREAS.

A FLOOD WATCH WILL BE IN EFFECT FOR ALL OHIO THROUGH THE NIGHT AS
RIVERS AND STREAMS ACROSS THE STATE RESPOND TO THE HEAVY RAINS.

URBAN AREAS AND SMALL STREAMS HAVE ALREADY BEEN FLOODED IN THE
NORTHEASTERN PARTS OF OHIO.  URBAN AND SMALL STREAM FLOOD WARNINGS
CONTINUE IN EFFECT FOR LAKE, GEAUGA, ASHTABULA, AND TRUMBULL COUNTIES.

UNCONFIRMED REPORTS OF FLOODING HAVE BEEN RECEIVED FROM JOHNSTON (IN
TRUMBULL COUNTY) AND ASHTABULA (IN ASHTABULA COUNTY).

CLOSE TO AN INCH OF RAIN HAS ALREADY FALLEN IN PARTS OF OHIO, AND MANY
RIVERS AND STREAMS HAVE BEGUN TO RISE.  PEOPLE THROUGHOUT OHIO SHOULD
WATCH CAREFULLY FOR FLOODING, ESPECIALLY IN THE NORTHEASTERN PARTS OF
THE STATE.  DO NOT TRY TO CROSS FLOODED ROADWAYS OR BRIGES IN A CAR OR
ON FOOT.

BURTON, IN GEAUGA COUNTY, MEASURED AN INCH OF RAIN BETWEEN 800 AM AND
330 PM.  MORE THAN A HALF-INCH OF RAIN (.60) FELL ON WILLOUGHBY HILLS
IN 20 MINUTES (IN LAKE COUNTY) EARLY IN THE AFTERNOON.

THE CHAGRIN RIVER IN LAKE COUNTY HAS RISEN SOME FOUR FEET SINCE THIS
MORNING, AND IT MAY LEAVE ITS BANKS BY MORNING.  THE SCIOTO RIVER AT
CIRCLEVILLE ROSE FIVE FEET DURING THE MORNING AND EARLY AFTERNOON; IT
MAY FLOOD IF ENOUGH RAIN FALLS TONIGHT.

THE THUNDERSTORMS IN NORTHEASTERN OHIO HAVE ALREADY BEGUN TO PRODUCE
HAIL.  HAILSTONES ABOUT THREE-EIGHTHS OF AN INCH IN DIAMETER FELL ON
TWINSBURG (IN GEAUGA COUNTY) AT THREE O' CLOCK THIS AFTERNOON.

AT 340 PM, WEATHER RADAR SHOWED SHOWERS AND THUNDERSTORMS SPREAD ACROSS
ALMOST ALL OF OHIO.  THE STRONGEST STORMS WERE OVER THE EASTERN HALF OF
THE STATE.  THE SHOWERS AND THUNDERSTORMS %WERE ALL MOVING EAST AT ABOUT
30 MILES AN HOUR.

PEROUTKA
Special weather statement, Jun 11, 4:05 PM EDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
205 PM ED WED JUN 11 1986

THUNDERSTORMS WILL BRING DANGEROUS WEATHER TO MUCH OF OHIO THIS
AFTERNOON AND EVENING.

A SEVERE THUNDERSTORM WATCH WILL BE IN EFFECT FOR MUCH OF NORTHERN OHIO
UNTIL NINE O' CLOCK THIS EVENING.  URBAN AND SMALL STREAM FLOOD
WARNINGS REMAIN IN EFFECT FOR LAKE, ASHTABULA, GEAUGA, AND TRUMBULL
COUNTIES; AND FOR MERCER COUNTY, PENNSYLVANIA.  A FLOOD WATCH WILL STAY
IN EFFECT FOR ALL OF OHIO UNTIL THURSDAY MORNING.

OHIO HAS SEEN MORE THAN ITS SHARE OF RAIN SO FAR THIS WEEK, AND IT HAS
LEFT THE GROUND SATURATED AND THE AIR HUMID AND UNSTABLE.

THUNDERSTORMS HAVE DEVELOPED ACROSS ALL OF OHIO.  HEAVY RAINS, STRONG
WINDS, AND LARGE HAIL MAY DEVELOP WITH THESE STORMS AS THE AFTERNOON
PROGRESSES.  BURTON, IN GEAUGA COUNTY, MEASURED ALMOST AN INCH OF RAIN
(.90) BETWEEN 1000 AM AND 130 PM TODAY.

PEOPLE IN NORTHERN OHIO SHOULD WATCH FOR DAMAGING THUNDERSTORM WINDS
AND LARGE HAIL THIS AFTERNOON AND EVENING.  PEOPLE ALL ACROSS OHIO
SHOULD WATCH FOR POSSIBLE FLOODING, ESPECIALLY IN URBAN AND LOW-LYING
AREAS.

PEROUTKA
Special weather statement, Jun 11, 5:00 PM EDT, 14 minutes before
AFTERNOON OHIO WEATHER STORY
NATIONAL WEATHER SERVICE CLEVELAND OH
500 PM EDT WED JUN 11 1986

STRONG AND DANGEROUS THUNDERSTORMS WILL MOVE ACROSS OHIO TONIGHT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF THE NORTHERN
PORTION OF THE STATE UNTIL 9 PM. IN THE WATCH AREA AND IN ANY PART OF
THE STATE SOME OF THE THUNDERSTORMS MAY CONTAIN DAMAGING WINDS AND
HAIL.

A FLOOD WATCH IS IN EFFECT FOR THE ENTIRE STATE TONIGHT AND THE
NORTHEAST HALF OF OHIO THURSDAY MORNING. SOME OF THESE STORMS
WILL CONTAIN VERY HEAVY RAIN THAT WILL CAUSE FLOODING OF ROADS,
STREAMS AND RIVERS. PERSONS THROUGHOUT OHIO SHOULD NOT TRY TO
CROSS FLOODED ROADWAYS OR BRIDGES IN A CAR OR ON FOOT. A URBAN AND
SMALL STREAM FLOOD WARNING IS IN EFFECT FOR LAKE, ASHTABULA,
AND GEAUGA COUNTIES THIS EVENING.

THESE THUNDERSTORMS CAN BE VERY DANGEROUS, PERSONS IN OHIO SHOULD BE
PREPARED TO TAKE ACTION IF THREATENING WEATHER APPROACHES AND LISTEN
FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

FLOODING IS A PROBLEM IN NORTHWEST GEAUGA COUNTY, ESPECIALLY
IN THE CHARDON, CHESTER, CLARIDON AND MUNSON AREAS. THE MITCHELL
MILLS BRIDGE IN WESTERN CHARDON TOWNSHIP MAY BE LOST AS THE WATER
IS RUNNING VERY HIGH ON THE CHAGRIN RIVER. MULBERRY ROAD IN
CHESTER TOWNSHIP MAY HAVE TO BE CLOSED AS THE WATER IS VERY DEEP.
A BRIDGE HAS BEEN WASHED OUT IN KIRTLAND (LAKE COUNTY).

IT WAS A STICKY AFTERNOON WITH HIGHS IN THE LOWER OR MID 80S.
THERE WERE AREAS OF SHOWERS AND THUNDERSTORMS.. SOME OF THE
THUNDERSTORMS HAVE CONTAINED VERY HEAVY RAIN AND FLOODING HAS
BEEN REPORTED IN PARTS OF NORTHEAST OHIO. AT 430 PM RAIN WAS FALLING
HALF AN INCH AN HOUR NEAR THE YOUNGSTOWN AIRPORT. HAILSTONES
ABOUT THREE-EIGHTS OF AN INCH IN DIAMETER FELL ON TWINSBURG
(IN GEAUGA COUNTY) AT THREE THIS AFTERNOON. PEA SIZE HAIL WAS
REPORTED IN SHARON AROUND 430 PM.

THE WEATHER SHOULD EASE UP THURSDAY AS ONLY SCATTTERED SHOWERS
AND THUNDERSTORMS ARE FOREAST. DRIER AIR WILL BE MOVING INTO
OHIO THURSDAY NIGHT AND HIGHS FRIDAY SHOULD ONLY BE IN THE 70S.

ALL THIS WEATHER IS BEING CAUSED BY A WARM AND MOIST SOUTHERLY FLOW
THAT WAS AHEAD OF A COLD FRONT THAT WAS OVER THE MIDWEST. THE FRONT
WILL MOVE INTO WESTERN OHIO THURSDAY AFTERmNOON AND EXIT THE STATE
THURSDAY NIGHT.

KIELTYKA
Special weather statement, Jun 11, 5:04 PM EDT, 10 minutes before
SPECIAL WEATHER STATEMENT AND AFTERNOON OHIO WEATHER STORY
NATIONAL WEATHER SERVICE CLEVELAND OH
505 PM EDT WED JUN 11 1986

STRONG AND DANGEROUS THUNDERSTORMS WILL MOVE ACROSS OHIO TONIGHT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF THE NORTHERN
PORTION OF THE STATE UNTIL 9 PM. IN THE WATCH AREA AND IN ANY PART OF
THE STATE SOME OF THE THUNDERSTORMS MAY CONTAIN DAMAGING WINDS AND
HAIL.

A FLOOD WATCH IS IN EFFECT FOR THE ENTIRE STATE TONIGHT AND THE
NORTHEAST HALF OF OHIO THURSDAY MORNING. SOME OF THESE STORMS
WILL CONTAIN VERY HEAVY RAIN THAT WILL CAUSE FLOODING OF ROADS,
STREAMS AND RIVERS. PERSONS THROUGHOUT OHIO SHOULD NOT TRY TO
CROSS FLOODED ROADWAYS OR BRIDGES IN A CAR OR ON FOOT. A URBAN AND
SMALL STREAM FLOOD WARNING IS IN EFFECT FOR LAKE, ASHTABULA,
AND GEAUGA COUNTIES THIS EVENING.

THESE THUNDERSTORMS CAN BE VERY DANGEROUS, PERSONS IN OHIO SHOULD BE
PREPARED TO TAKE ACTION IF THREATENING WEATHER APPROACHES AND LISTEN
FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

FLOODING IS A PROBLEM IN NORTHWEST GEAUGA COUNTY, ESPECIALLY
IN THE CHARDON, CHESTER, CLARIDON AND MUNSON AREAS. THE MITCHELL
MILLS BRIDGE IN WESTERN CHARDON TOWNSHIP MAY BE LOST AS THE WATER
IS RUNNING VERY HIGH ON THE CHAGRIN RIVER. MULBERRY ROAD IN
CHESTER TOWNSHIP MAY HAVE TO BE CLOSED AS THE WATER IS VERY DEEP.
A BRIDGE HAS BEEN WASHED OUT IN KIRTLAND (LAKE COUNTY).

IT WAS A STICKY AFTERNOON WITH HIGHS IN THE LOWER OR MID 80S.
THERE WERE AREAS OF SHOWERS AND THUNDERSTORMS.. SOME OF THE
THUNDERSTORMS HAVE CONTAINED VERY HEAVY RAIN AND FLOODING HAS
BEEN REPORTED IN PARTS OF NORTHEAST OHIO. AT 430 PM RAIN WAS FALLING
HALF AN INCH AN HOUR NEAR THE YOUNGSTOWN AIRPORT. HAILSTONES
ABOUT THREE-EIGHTS OF AN INCH IN DIAMETER FELL ON TWINSBURG
(IN GEAUGA COUNTY) AT THREE THIS AFTERNOON. PEA SIZE HAIL WAS
REPORTED IN SHARON AROUND 430 PM.

THE WEATHER SHOULD EASE UP THURSDAY AS ONLY SCATTTERED SHOWERS
AND THUNDERSTORMS ARE FOREAST. DRIER AIR WILL BE MOVING INTO
OHIO THURSDAY NIGHT AND HIGHS FRIDAY SHOULD ONLY BE IN THE 70S.

ALL THIS WEATHER IS BEING CAUSED BY A WARM AND MOIST SOUTHERLY FLOW
THAT WAS AHEAD OF A COLD FRONT THAT WAS OVER THE MIDWEST. THE FRONT
WILL MOVE INsTO WESTERN OHIO THURSDAY AFTERNOON AND EXIT THE STATE
THURSDAY NIGHT.

KIELTYKA
CORRECTED THE HEADING, MAKING IT A SPECIAL WEATHER STATEMENT
AND WEATHER STORY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 9:11 PM EDTTornado WarningCLEOttawa49 min
Jun 11, 1:22 AM EDTSevere Thunderstorm WarningCLEAshtabula38 min
Jun 11, 7:27 PM EDTSevere Thunderstorm WarningCLETrumbull63 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.