Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 252, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Nov 10, 2002, 8:24 PM EST for Venango County, Pennsylvania. It was in force for 66 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
- Nov 10, 2002, 8:24 PM EST (01:24 UTC)
- Expired
- Nov 10, 2002, 9:30 PM EST
- In force
- 66 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Venango County, PA
The radar
The Pittsburgh radar (KPBZ), 104 km from the middle of the area, began a volume at 01:25 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 |
|---|---|---|---|
| Nov 10, 8:56 PM EST | Thunderstorm Wind | Oil City, PA | Trees downed by wind. |
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 |
|---|---|---|---|
| Nov 10, 6:45 PM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 1.4 hours before the alert went out and 114 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
- 356 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1132 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 451 m²/s²
- 0-3 km storm-relative helicity
- 474 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
477 WUUS51 KPBZ 110124 SVRPBZ PAC121-110230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 825 PM EST SUN NOV 10 2002 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... VENANGO COUNTY IN PENNSYLVANIA * UNTIL 930 PM EST * AT 825 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHWEST OF POLK...MOVING NORTHEAST AT 45 MPH. * SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM INCLUDE...HASSON HEIGHTS... <<CALL TO ACTION>>THIS IS A DANGEROUS STORM...CAPABLE OF PRODUCING VERY LARGE HAIL AND DESTRUCTIVE WINDS. IF YOU ARE NEAR THE PATH OF THE STORM...TAKE COVER IN A STURDY STRUCTURE.
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 10, 7:48 PM EST | Severe Thunderstorm Warning | PBZ | Mercer | 57 min |
| Nov 10, 7:56 PM EST | Tornado Warning | PBZ | Mercer | 64 min |
| Nov 10, 8:31 PM EST | Severe Thunderstorm Warning | PBZ | Lawrence | 59 min |
| Nov 10, 9:11 PM EST | Severe Thunderstorm Warning | PBZ | Mercer | 34 min |
| Nov 10, 9:23 PM EST | Severe Thunderstorm Warning | PBZ | Venango | 67 min |
| Nov 10, 9:55 PM EST | Severe Thunderstorm Warning | PBZ | Beaver, Washington | 65 min |
| Nov 10, 10:08 PM EST | Severe Thunderstorm Warning | PBZ | Allegheny | 52 min |
| Nov 10, 10:14 PM EST | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| Nov 10, 10:44 PM EST | Severe Thunderstorm Warning | PBZ | Westmoreland | 61 min |
| Nov 10, 10:47 PM EST | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2002Every severe thunderstorm warning in 2002
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.