Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 14, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at May 30, 1989, 6:31 PM EDT for Mercer County, Pennsylvania. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- May 30, 1989, 6:31 PM EDT (22:31 UTC)
- Expired
- May 30, 1989, 7:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Mercer 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, 10.5 hours before the alert went out and 100 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.
- Mixed-layer CAPE
- 17 J/kg
- Mixed-layer CIN
- -256 J/kg
- Mixed-layer LCL
- 890 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 310 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 30, 5:54 PM EDT, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 544 PM EDT TUE MAY 30 1989 .......THUNDERSTORMS ACROSS NORTHWEST PENNSYLVANIA... AT 545 PM WEATHER RADAR SHOWED A LINE OF SHOWERS AND THUNDERSTORMS LYING EAST TO WEST ACROSS NORTHWEST PENNSYLVANIA. THIS LINE WAS 30 MILES WIDE AND EXTENDED FROM NEAR ANDOVER OHIO EASTWARD ACROSS THE SOUTHERN HALF OF CRAWFORD COUNTY AND THE NORTHERN HALF OF VENANGO IN NORTHWEST PENNSYLVANIA. THESE STORMS HAVE BEEN INCREASING IN COVERAGE AND INTENSITY OVER THE PAST HOUR. THE LINE HAS SHOWN LITTLE MOVEMENT ALTHOUGH THE SEPERATE THUNDERSTORMS IN THE LINE HAVE BEEN MOVING EASTWARD. SOME OF THESE STORMS WILL CONTAIN STRONG GUSTY WINDS...DANGEROUS LIGHTuNING ...SMALL HAIL AND VERY HEAVY DOWNPOURS....FLOODING OF SMALL STREAMS AND LOW LYING AREAS WILL OCCUR ESPECIALLY WHERE THUNDERSTORMS REPEAT OVER THE SAME AREA. PARRISH/WELLS
Special weather statement, May 30, 6:23 PM EDT, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
523 PM EDT TUE MAY 30 1989
THUNDERSTORMS WITH HEAVY DOWNPOURS.. GUSTY WINDS AND FREQUENT LIGHTNING
WERE MOVING THROUGH TRUMBULL COUNTY IN OHIO AND MERCER COUNTY IN WESTERN
PENNSYLVANIA EARLY THIS EVENING.
AT 504 PM EDT A WIND GUST OF 56 MPH ACCOMPANIED A THUNDERSTORM AT THE
YOUNGSTOWN MUNICIPAL AIRPORT. A BRIEF HEAVY DOWNPOUR WAS ALSO REPORTED.
PEOPLE IN EASTERN OHIO AND WESTERN PENNSYLVANIA SHOULD KEY AN EYE ON THE
WEATHER THIS EVENING AND BE PREPARED TO SEEK SHELTER SHOULD THREATENING
WEATHER APPROACH.
DOXEY
+ [The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 6:22 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 68 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1989Every severe thunderstorm warning in 1989
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.