Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 82, NWS Cleveland, OH

August 28, 19905 counties in Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 28, 1990, 8:20 PM EDT for 5 counties in Pennsylvania. It was in force for 70 min. 7 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
Aug 28, 1990, 8:20 PM EDT (00:20 UTC)
Expired
Aug 28, 1990, 9:30 PM EDT
In force
70 min
Issued by
NWS Cleveland, OH
Area
Whole counties

Counties Cameron County, PA, Elk County, PA, Forest County, PA, McKean County, PA, Potter County, PA

The radar

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

What was reported inside it

TimeReportWhereRemark
Aug 28, 8:35 PM EDTThunderstorm Wind 0Elk, PA
Aug 28, 8:35 PM EDTThunderstorm Wind 0Potter, PA
Aug 28, 8:35 PM EDTThunderstorm Wind 0Cameron, PA
Aug 28, 8:35 PM EDTThunderstorm Wind 0Mckean, PA
Aug 28, 8:35 PM EDTThunderstorm Wind 0Forest, PA
Aug 28, 8:49 PM EDTThunderstorm Wind 0Forest, PA
Aug 28, 9:05 PM EDTThunderstorm Wind 0Potter, PA

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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 0.3 hours before the alert went out and 150 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, Buffalo Intl Airport, NY at 00:00Z on 1990-08-29Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 1990-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.1939587897Sfc1 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
NaN m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
85 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 KERI 290020
SVRERI
PAC049-053-105-039-083-047-121-023-123-290130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE ERIE PA
820 PM EDT TUE AUG 28 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 930 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHWEST PART OF PENNSYLVANIA
      ERIE...FOREST...POTTER...CRAWFORD...MCKEAN...ELK...
      VENANGO...CAMERON...ADJACENT LAKE ERIE WATERS...WARREN

AT 818 PM EDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTEND
ED FROM SOUTHERN ONTARIO ACROSS LAKE ERIE TO LAKE CITY IN ERIE CO.
PA ANN THIS LINE CONTINUED ACROSS CRAWFORD CO INTO VENANGO CO. THE
LINE OF SEVERE STORMS THEN CURVED NORTHEAST ALL THE WAY TO POTTER
CO. PA.

THE STORMS WERE MOVING EAST AND SOUTHEAST AT ABOUT 35 MILES AN HOUR

WHEN THUNDERSTORMS ARE OCCURRING...PEAOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND NEAR WINDOWS.  DO NOT USE TELEPHONES
OR ELECTRICAL APPLIANCES.  MOTORISTS SHOULD AVOID LOW WATER CROSSINGS.

IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER IN A NEARBY REINFORCED
BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DANGEROUS
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.

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

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

 HEAVY RAINFALL MAY CAUSE SOME STREET AND URBAN FLOODING.

 RR

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, Aug 28, 3:25 PM EDT, 4 hours 55 minutes before
OHZALL-282100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
340 PM EDT TUE AUG 28 1990

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE NORTHERN
TWO THIRDS OF OHIO UNTIL 10 PM EDT.

THE SEVERE THUNDERSTORM WATCH INCLUDES THE FOLLOWING CITIES...
CLEVELAND... TOLEDO...DAYTON... COLUMBUS... YOUNGSTOWN... MANSFIELD
AND AKRON-CANTON.

AT 310 PM RADAR WAS SHOWING A DEVELOPING LINE OF THUNDERSTORMS
FROM NORTHEAST OF DETROIT TO NEAR SOUTH BEND. THE THUNDERSTORMS
WERE MOVING EAST SOUTHEAST AT 40 MPH AND WILL ENTER NORTHWEST OHIO
BY 4 PM.

PEOPLE IN OHIO SHOULD KEEP AN EYE TO THE SKY AND BE PREPARED
FOR SOME SEVERE THUNDERSTORMS. THE THUNDERSTORMS COULD HAVE
WIND GUSTS IN EXC@ESS OF 58 MPH... HAIL AND EVEN HEAVY RAIN.

KIELTYKA
Special weather statement, Aug 28, 5:02 PM EDT, 3 hours 18 minutes before
OHZ001-002-011-282200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOLEDO OH
501 PM EDT TUE AUG 28 1990

THUNDERSTORMS WERE MOVING INTO NORTHWEST OHIO THIS EVENING.

AT 455 PM WEATHER RADAR INDICATED THUNDERSTORMS WITH POSSIBLE HAIL
LOCATED IN WILLIAMS COUNTY OF NORTHWEST OHIO.  THESE STORMS WERE
MOVING EAST AT 35 MPH... AND WILL MOVE INTO FULTON AND HENRY COUNTIES
BY 530 PM.

THIS IS A POTENTIALLY DANGEROUS SITUATION.  IF YOU ARE IN NORTHWEST
OHIO YOU SHOULD PREPARE FOR SEVERE THUNDERSTORMS WITH HAIL AND DAMAGING
WINDS.  STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES AND
POSSIBLE WARNINGS.

MURPHY

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 8:20 PM EDTSevere Thunderstorm WarningCLECrawford, Erie, Venango, Warren70 min
Aug 28, 8:26 PM EDTTornado WarningCLEErie64 min
Aug 28, 9:31 PM EDTSevere Thunderstorm WarningCLECrawford, Venango59 min
Aug 28, 9:33 PM EDTSevere Thunderstorm WarningCLEMercer57 min
Aug 28, 10:26 PM EDTSevere Thunderstorm WarningCLEMercer34 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1990Every severe thunderstorm warning in 1990

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.