Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 103, NWS Pittsburgh, PA

June 2, 1998Mercer County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 2, 1998, 4:33 PM EDT for Mercer County, Pennsylvania. It was in force for 57 min. 1 report 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: Jun 2, 1998, 4:33 PM EDT (20:33 UTC)
Expired: Jun 2, 1998, 5:30 PM EDT
In force: 57 min
Issued by: NWS Pittsburgh, PA
Area: Whole counties

County Mercer County, PA

The radar

The Pittsburgh radar (KPBZ), 86 km from the middle of the area, began a volume at 20:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jun 2, 4:37 PM EDT	Hail 0.88	Sharpsville, PA	Two lines of severe thunderstorms formed ahead of an approaching cold front during the early afternoon and continuing through the late evening hours of June 2nd. These storms produced a total of nine confirmed tornadoes (ranging from F0 to F2) as they swept a

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 2, 4:15 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.6 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 158 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1288 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 224 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 2, 3:50 PM EDT	Severe Thunderstorm Warning	PBZ	Columbiana	60 min
Jun 2, 4:45 PM EDT	Severe Thunderstorm Warning	PBZ	Columbiana	60 min
Jun 2, 4:52 PM EDT	Tornado Warning	PBZ	Columbiana	53 min
Jun 2, 6:49 PM EDT	Severe Thunderstorm Warning	PBZ	Columbiana	56 min
Jun 2, 7:47 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	43 min
Jun 2, 4:49 PM EDT	Severe Thunderstorm Warning	PBZ	Venango	56 min
Jun 2, 4:57 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	63 min
Jun 2, 5:17 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Butler	58 min
Jun 2, 5:25 PM EDT	Tornado Warning	PBZ	Beaver	45 min
Jun 2, 5:29 PM EDT	Tornado Warning	PBZ	Allegheny	51 min
Jun 2, 5:40 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	50 min
Jun 2, 5:50 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	55 min
Jun 2, 5:54 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion	51 min
Jun 2, 6:09 PM EDT	Tornado Warning	PBZ	Westmoreland	61 min
Jun 2, 6:13 PM EDT	Tornado Warning	PBZ	Allegheny	27 min
Jun 2, 6:20 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence, Mercer	60 min
Jun 2, 6:25 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	65 min
Jun 2, 6:35 PM EDT	Flash Flood Warning	PBZ	Allegheny, Westmoreland	2 hr
Jun 2, 6:36 PM EDT	Tornado Warning	PBZ	Jefferson	59 min
Jun 2, 6:45 PM EDT	Tornado Warning	PBZ	Fayette	45 min
Jun 2, 6:53 PM EDT	Severe Thunderstorm Warning	PBZ	Venango	57 min
Jun 2, 6:56 PM EDT	Tornado Warning	PBZ	Indiana	34 min
Jun 2, 6:58 PM EDT	Tornado Warning	PBZ	Beaver, Lawrence	62 min
Jun 2, 7:05 PM EDT	Tornado Warning	PBZ	Allegheny, Butler	70 min
Jun 2, 7:14 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion	61 min
Jun 2, 7:15 PM EDT	Flash Flood Warning	PBZ	Beaver	105 min
Jun 2, 7:28 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	62 min
Jun 2, 7:40 PM EDT	Flash Flood Warning	PBZ	Allegheny, Westmoreland	2 hr
Jun 2, 7:53 PM EDT	Tornado Warning	PBZ	Westmoreland	67 min
Jun 2, 7:57 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	58 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1998 Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.