Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 321, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 25, 1998, 7:08 AM EDT for Butler County, Pennsylvania. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 25, 1998, 7:08 AM EDT (11:08 UTC)
- Expired
- Aug 25, 1998, 8:00 AM EDT
- In force
- 52 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Butler County, PA
The radar
The Pittsburgh radar (KPBZ), 49 km from the middle of the area, began a volume at 11:07 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.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 11.1 hours before the alert went out and 58 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
- 201 J/kg
- Mixed-layer CIN
- -246 J/kg
- Mixed-layer LCL
- 1103 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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, Aug 25, 5:30 AM EDT, 1 hour 38 minutes before
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</html>The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 8:54 PM EDT | Severe Thunderstorm Warning | PBZ | Tuscarawas | 51 min |
| Aug 25, 6:19 AM EDT | Severe Thunderstorm Warning | PBZ | Tuscarawas | 41 min |
| Aug 25, 1:37 PM EDT | Severe Thunderstorm Warning | PBZ | Columbiana | 62 min |
| Aug 25, 3:44 PM EDT | Severe Thunderstorm Warning | PBZ | Muskingum | 61 min |
| Aug 25, 3:57 PM EDT | Severe Thunderstorm Warning | PBZ | Coshocton | 58 min |
| Aug 25, 4:06 PM EDT | Tornado Warning | PBZ | Muskingum | 39 min |
| Aug 25, 4:42 PM EDT | Severe Thunderstorm Warning | PBZ | Guernsey | 63 min |
| Aug 25, 4:50 PM EDT | Severe Thunderstorm Warning | PBZ | Muskingum | 55 min |
| Aug 25, 4:54 PM EDT | Severe Thunderstorm Warning | PBZ | Noble | 66 min |
| Aug 25, 5:00 PM EDT | Severe Thunderstorm Warning | PBZ | Harrison | 60 min |
| Aug 25, 4:49 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 59 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1998Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.