Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 149, NWS Cleveland, OH

September 30, 1986Crawford County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 30, 1986, 3:27 PM EDT for Crawford County, Pennsylvania. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Sep 30, 1986, 3:27 PM EDT (19:27 UTC)
Expired
Sep 30, 1986, 4:30 PM EDT
In force
63 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Crawford County, PA

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, 7.5 hours before the alert went out and 142 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 1986-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 461 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 1986-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 212 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
461 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KERI 301927
SVRERI
PAC039-302030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
327 PM EDT TUE SEP 30 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 430 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTHWEST PENNSYLVANIA...CRAWFORD

AT 325 PM EDT RADAR SHOWED A SEVERE THUNDERSTORM NEAR
CONNEAUTVILLE MOVING EASTWARD AT 30 TO 35 MPH.

 THIS STORM ISX ACCOMPANIED BY INTENSE LIGHTNING AND STRONG GUSTY
 WINDS.

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, Sep 30, 2:00 PM EDT, 1 hour 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
200 PM EDT TUE SEP 30 1986

STRONG THUNDERSTORMS HAVE MOVED INTO NORTH CENTRAL OHIO.

AT 155 PM EDT WEATHER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS FROM
OVER LAKE ERIE INLAND THROUGH AVON LAKE TO SOUTHERN LORAIN COUNTY.

THESE THUNDERSTORMS HAVE PRODUCED VERY HEAVY RAIN AND WINDS OF 30 TO 40
MPH AS THEY MOVE THROUGH. AS THE STORMS APPROACH THE SKY BECOMES VERY
DARK AND THE HEAVY RAIN MOVES IN RAPIDLY.

OVER ONE-HALF INCH OF RAIN FELL IN BAY VIEW OHIO IN ABOUT 10 MINUTES.

PEOPLE IN THE GREATER CLEVELAND AREA SHOULD BE READY FOR THE HEAVY
RAINS AND GUSTY WINDS. THE RAINS WILL PROABABLY CAUSE SOME FLOODING OF g
STREETS AND AREAS WITH POOR DRAINAGE.

A SPECIAL MARINE WARNING IS IN EFFECT UNTIL 345 PM EDT FOR LAKE ERIE
FROM SANDUSKY TO FAIRPORT HARBOR.

MAXIMUK
Special weather statement, Sep 30, 2:35 PM EDT, 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MANSFIELD OH
235 PM EDT TUE SEP 30 1986

AT 230PM EDT WEATHER RADAR SHOWED A NEARLY SOLID LINE OF THUNDERSTORMS
FROM CLEVELAND...TO BUCYRUS..TO ABOUT DAYTON OHIO.

 THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 50 MPH.
AT THIS RATE SHOWERS AND THUNDERSTORMS WILL MOVE OVER THE MANSFIELD
AREA BY 3PM EDT.

 BRIEF GUSTY WINDS...LOCALLY HEAVY RAINS AND SMALL HAIL IS POSSIBLE AS
THE THUNDERSTORMS MOVE OVERHEAD.

BANYAS
Special weather statement, Sep 30, 2:46 PM EDT, 41 minutes before
^CLESPSCAK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AKRON CANTON OH
245  PM EDT TUE SEP 30 1986

AT 235 PM RADAR SHOWED A LINE OF THUNDERSTORMS EXTENDING FROM ERIE,
PENNSYLVANIA TO CLEVELAND, OHIO TO MARYSVILLE, OHIO. THIS LINE IS
MOVING EAST AT 20 TO 30 MPH. THIS LINE WILL MOVE THRU SUMMIT AND
PORTAGE COUNTIES BETWEEN 3PM AND 4PM.

BRIEF GUSTY WINDS...LOCALLY HEAVY RAINS ARE POSSIBLE WITH THESE
THUNDERSTORMS.

 EH {
Special weather statement, Sep 30, 3:00 PM EDT, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
300 PM EDT TUE SEP 30 1986

THUNDERSTORMS WITH HEAVY RAIN AND GUSTY WINDS WERE MOVING INTO LAKE AND
GEAUGA COUNTIES AT 3 PM EDT.

WINDS WERE GUSTING TO 50 MPH AND HEAVY RAIN WAS LIMITING VISIBILITY TO
200 FEET IN NEWBURY AND THE WILLOUGHBY AREAS. THE STORMS WERE MOVING
EAST AT AT 45 MPH AND WILL PASS THROUGH LAKE, GEAUGA AND ASHTABULA
COUNTIES BY 415 PM EDT.

THE HEAVY RAIN WILL CAUSE FLOODING OF STREETS, BASEMENTS AND LOW LYING
AREAS. MOTORISTS SHOULD BE ALERT FOR STANDING WATER ON ROADWAYS AND
SHARPLY REDUCED VISIBILITIES.

A SPECIAL MARINE WARNING WILL BE IN EFFECT FOR LAKE ERIE FROM SANDUSKY
TO FAIRPORT HARBOR UNTIL 345 PM EDT AND FROM FAIRPORT HARBOR TO RIPLEY
NEW YORK UNTIL 430 PM EDT.

PEOPLE IN NORTHEAST OHIO SHOULD BE ALERT FOR THE GUSTY WINDS AND HEAVY
RAINS.

MAXIMUK
Special weather statement, Sep 30, 3:06 PM EDT, 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
305 PM EDT TUE SEP 30 1986

THUNDERSTORMS WITH HEAVY RAIN AND GUSTY WINDS HAVE DEVELOPED OVER
NORTHEAST AND NORTH CENTRAL OHIO.

AT 300 PM RADAR INDICATED AN AREA OF THUNDERSTORMS AND RAIN SHOWERS
EXTENDING FROM NEAR GENEVA OHIO SOUTHWEST TO OVER AKRON.  ANOTHER AREA
OF THUNDERSTORMS AND RAIN SHOWERS WAS ALSO INDICATED EXTENDING FROM
NEAR CLEVELAND SOUTHWEST TO THE MANSFIELD AREA.

ALL PRECIPITATION WAS MOVING EAST AT 40 MPH AND WILL MOVE INTO THE
MAHONING VALLEY AREA AROUND 330 PM.  THE STORMS HAVE PRODUCED WIND
GUSTS TO NEAR 40 MPH AND HEAVY DOWNPOURS.

THESE STORMS WILL MOVE INTO THE VALLEY AREA DURING THE EVENING RUSH
HOURS AND WILL CAUSE PROBLEMS FOR MOTORISTS.  THE HEAVY RAINS WILL
PROBABLY CAUSE TEMPORARY FLOODING OF STREETS AND LOW LYING AREAS.
THE GUSTY WINDS WILL ALSO WHIP UP THE RAIN AND CAUSE LOW VISIBILITIES.{{}TR

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 30, 2:40 PM EDTSevere Thunderstorm WarningCLEErie65 min
Sep 30, 4:32 PM EDTTornado WarningCLECrawford, Erie, Warren58 min
Sep 30, 5:12 PM EDTSevere Thunderstorm WarningCLECrawford33 min
Sep 30, 5:28 PM EDTTornado WarningCLECrawford, Erie, Warren31 min
Sep 30, 5:32 PM EDTSevere Thunderstorm WarningCLELawrence58 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 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.