Alert archive / Ohio / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 41, NWS Cleveland, OH

May 1, 1991Columbiana County, Mahoning County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at May 1, 1991, 1:45 PM EDT for Columbiana County, Mahoning County, Ohio. It was in force for 60 min. 3 reports 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 1, 1991, 1:45 PM EDT (17:45 UTC)
Expired
May 1, 1991, 2:45 PM EDT
In force
60 min
Issued by
NWS Cleveland, OH
Area
Whole counties

Counties Columbiana County, OH, Mahoning County, OH

What was reported inside it

TimeReportWhereRemark
May 1, 1:45 PM EDTHail 0.75Columbiana, OH
May 1, 2:09 PM EDTThunderstorm Wind 51Mahoning, OH
May 1, 2:30 PM EDTThunderstorm Wind 0Columbiana, 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

Pittsburgh, PA (KPIT), launched 12:00Z, 5.8 hours before the alert went out and 78 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 1991-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1991-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2057 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
133 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.

000 
TTAA00 KYNG 011747
SVRYNG
OHC029-099-011845-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
145 PM EDT WED MAY 1 1991
 
THE NATIONAL WEATHER SERVICE IN YOUNGSTOWN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  245 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST OHIO
 
   ...COLUMBIANA COUNTY...MAHONING COUNTY
 
AT 145 PM EDT WEATHER RADAR WAS SHOWING POSSIBLE SEVERE THUNDERSTORMS
MOVING INTO WESTERN MAHONING AND COLUMBIANA COUNTIES. THESE STORMS
WERE MOVING NORTHEAST AT 45 MPH. STRONG GUSTY WINDS WILL BE THE MAJOR
PROBLEMS WITH THESE STORMS.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HBAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
SITES

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 1, 12:19 PM EDT, 1 hour 26 minutes before
OHZ002-003-004-11-011720-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OHIO
1220 PM EDT WED MAY 1 1991

A LINE OF INTENSE THUNDERSTORMS HAVE DEVELOPED OVER NORTHERN
OHIO EARLY THIS AFTERNOON.

AT 1210 PM EDT A LINE OF THUNDERSTORMS WAS FROM ELYRIA TO MANSFILED
MOVING EAST AT 40 MPH. ANOTHER AREA OF STORMS WAS ALONG CLEVELAND'S
LAKESHORE. AT NOON SMALL HAIL WAS REPORTED IN LAKEWOOD.

PEOPLE AND BOATERS ACROSS CUYAHOGA... ASHLAND... GEAUGA... LORAIN...
MEDINA AND LAKE COUNTIES AND EXPECT THESE STORMS BY 100 PM EDT.

THESE STORMS MAY PRODUCE DANGEROUS LIGHTNING... HEAVY DOWNPOURS... GUSTY
WINDS AND SMALL HAIL..

JOHNSON
Special weather statement, May 1, 12:22 PM EDT, 1 hour 23 minutes before
OHZ002-003-004-011-011720-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE CLEVELAND OHIO
1220 PM EDT WED MAY 1 1991

A LINE OF INTENSE THUNDERSTORMS HAVE DEVELOPED OVER NORTHERN
OHIO EARLY THIS AFTERNOON.

AT 1210 PM EDT A LINE OF THUNDERSTORMS WAS FROM ELYRIA TO MANSFILED
MOVING EAST AT 40 MPH. ANOTHER AREA OF STORMS WAS ALONG CLEVELAND'S
LAKESHORE. AT NOON SMALL HAIL WAS REPORTED IN LAKEWOOD.

PEOPLE AND BOATERS ACROSS CUYAHOGA... ASHLAND... GEAUGA... LORAIN...
MEDINA AND LAKE COUNTIES AND EXPECT THESE STORMS BY 100 PM EDT.

THESE STORMS MAY PRODUCE DANGEROUS LIGHTNING... HEAVY DOWNPOURS... GUSTY
WINDS AND SMALL HAIL..

JOHNSON
CORRECTED COUNTY CODE.
Special weather statement, May 1, 1:06 PM EDT, 39 minutes before
PAZ001-02-011900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ERIE, PA
1256 PM EDT WED MAY 01 1991

...STRONG THUNDERSTORMS HEADING TOWARD NORTHWEST PENNSYLVANIA...

AT 1 PM EDT ERIE WEATHER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS
ACROSS LAKE ERIE...EXTENDING SOUTHWARD ACROSS WESTERN ASHTABULA COUNTY...
OHIO TO GEAUGA COUNTY OHIO.  THIS LINE OF THUNDERSTORMS WAS MOVING TO
THE EAST AT 40 MILES AN HOUR.

AS THESE THUNDERSTORMS MOVE ACROrSS ERIE AND ASHTABULA COUNTIES BETWEEN
1 PM AND 2 PM...THEY WILL PRODUCE HEAVY DOWNPOURS...POSSIBLE WIND GUSTS
TO 50 MILES AND HAIL.

BOATERS ON LAKE ERIE SHOULD SEEK SAFE HARBOR AS THESE STORMS APPROACH THE
LAKESHORE AREA.

TJP/FPW/BCL/RR
Special weather statement, May 1, 1:09 PM EDT, 36 minutes before
OHZ004-007-011810-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AKRON CANTON OH
108 PM EDT  WED MAY 1   199

STRONG THUNDERSTORMS WERE CONTINUING TO DEVELOPE OVER EASTERN OHIO THIS
AFTERNOON.

RADAR AT 100 PM INDICATED A LINE OF STORMS FROM ABOUT 20 MILES NORTH OF
RAVENNA SOUTHWEST TO ABOUT 15 MLES SOUTHWEST OF ZANESVILLE. THESE STORMS
WERE MOVING NORTHEAST AT ABOUT 45 MPH AND HAVE THE POTENTIAL FOR
PRODUCING BRIEF HEAVY DOWNPOURS...WIND GU>STS TO ABOUT 45 MPH AND POSSIBLY
SMALL HAIL.

THOSE ALONG THEIR PATH SHOULD BE ALERT FOR THEIR APPROACH AND BE
PREPARED TO MOVE TO A PALCE OF SAFETY SHOULD CONDITIONS BECOME
THREATENING.

BROOKY

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 12:53 PM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga67 min
May 1, 1:19 PM EDTSevere Thunderstorm WarningCLEStark, Tuscarawas56 min
May 1, 2:05 PM EDTSevere Thunderstorm WarningCLETrumbull55 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1991Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.