Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 134, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 19, 2001, 3:33 PM EDT for Clarion County, Forest County, Pennsylvania. It was in force for 57 min. 4 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 19, 2001, 3:33 PM EDT (19:33 UTC)
- Expired
- Aug 19, 2001, 4:30 PM EDT
- In force
- 57 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
Counties Clarion County, PA, Forest County, PA
The radar
The Pittsburgh radar (KPBZ), 118 km from the middle of the area, began a volume at 19:35 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 |
|---|---|---|---|
| Aug 19, 3:40 PM EDT | Hail 0.75 | Leeper, PA | |
| Aug 19, 3:55 PM EDT | Tornado F1 | Duhring, PA | An F1 tornado touched down just southwest of the town of Duhring. The tornado continued moving along a sporadic path to the northeast, exiting Forest County approximately 2 miles northeast of Duhring.As the tornado passed near Duhring it reached its maximum p |
| Aug 19, 4:00 PM EDT | Hail 1.75 | Duhring, PA | Golfball-sized hail was observed in Duhring. In addition, hail the size of nickels covered the ground. |
| Aug 19, 4:10 PM EDT | Thunderstorm Wind | Rimersburg, PA | Thunderstorm winds downed several trees. |
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 19, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 7.6 hours before the alert went out and 123 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
- 22 J/kg
- Mixed-layer CIN
- -193 J/kg
- Mixed-layer LCL
- 1079 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 19, 7:35 AM EDT, 7 hours 58 minutes earlier.
Area forecast discussion, Aug 19, 7:35 AM EDT, 7 hours 58 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 735 AM EDT SUN AUG 19 2001 UPDATED FORECAST TO GO WITH SCATTERED SHOWERS AND THUNDERSTORMS TODAY. FIRST BATCH OF SHOWERS HAS DIMINISHED...BUT SCATTERED SHOWERS AND STORMS ARE BEGINNING TO DEVELOP IN CLOUD BAND NOW MOVING THROUGH CENTRAL AND EASTERN OHIO. REST UNCHANGED. ...GIORDANO .PBZ... MD...NONE. OH...NONE. PA...NONE. WV...NONE.
In the hours before
Special weather statement, Aug 19, 3:15 PM EDT, 18 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 19, 3:36 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 54 min |
| Aug 19, 3:39 PM EDT | Tornado Warning | PBZ | Forest | 51 min |
| Aug 19, 3:57 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 63 min |
| Aug 19, 4:07 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 53 min |
| Aug 19, 4:43 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Washington | 62 min |
| Aug 19, 4:56 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 64 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2001Every severe thunderstorm warning in 2001
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.