Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 187, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 24, 1998, 10:20 AM EDT for Cameron County, Potter County, Pennsylvania. It was in force for 75 min. 2 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 24, 1998, 10:20 AM EDT (14:20 UTC)
- Expired
- Aug 24, 1998, 11:35 AM EDT
- In force
- 75 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Cameron County, PA, Potter County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 24, 10:45 AM EDT | Thunderstorm Wind 51 | Emporium, PA | A large limb was blown down in Emporium and a tree was toppled north of town. |
| Aug 24, 10:45 AM EDT | Thunderstorm Wind 51 | Shinglehouse, PA | Trees down. |
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 |
|---|---|---|---|
| Aug 24, 9:00 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 2.3 hours before the alert went out and 158 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
- 1420 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 952 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 8.3
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 State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 8:58 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 62 min |
| Aug 24, 9:37 AM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean | 58 min |
| Aug 24, 10:07 AM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 78 min |
| Aug 24, 10:27 AM EDT | Severe Thunderstorm Warning | CTP | Elk | 48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.