Alert archive / Pennsylvania / Tornado Warnings in 2007
Tornado Warning 2, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this tornado warning at Apr 23, 2007, 8:29 PM EDT for Butler County, Pennsylvania. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2007, 8:29 PM EDT (00:29 UTC)
- Expired
- Apr 23, 2007, 8:49 PM EDT
- In force
- 20 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Counties, with a storm outline in the text
County Butler County, PA
The radar
The Pittsburgh radar (KPBZ), 69 km from the middle of the area, began a volume at 00:30 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, 0.5 hours before the alert went out and 77 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
- 37 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1527 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS51 KPBZ 240028 TORPBZ PAC019-240100- /O.NEW.KPBZ.TO.W.0002.070424T0029Z-070424T0100Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 829 PM EDT MON APR 23 2007 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A * TORNADO WARNING FOR... BUTLER COUNTY IN WEST CENTRAL PENNSYLVANIA... THIS INCLUDES THE CITIES OF...HOOKER...EAU CLAIRE... * UNTIL 900 PM EDT * AT 826 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR HOOKER... MOVING EAST AT 45 MPH. * THE TORNADO WILL BE NEAR... PETROLIA...PARKERS CORNERS AND KARNS CITY BY 835 PM EDT... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE. 1-877-633-6772. WHEN YOU CAN DO SO SAFELY. LAT...LON 4115 7989 4098 7992 4096 7971 4113 7971 $$
1 follow-up statement
000 WWUS51 KPBZ 240049 SVSPBZ SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 849 PM EDT MON APR 23 2007 PAC019-240059- /O.CAN.KPBZ.TO.W.0002.000000T0000Z-070424T0100Z/ BUTLER PA- 849 PM EDT MON APR 23 2007 ...THE TORNADO WARNING FOR BUTLER COUNTY IS CANCELLED... THE STORM HAS WEAKED AND MOVED EAST OUT OF THE COUNTY. LAT...LON 4115 7989 4098 7992 4096 7971 4113 7971 $$
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 8:14 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 31 min |
| Apr 23, 8:28 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 62 min |
| Apr 23, 8:34 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 56 min |
Nearby
Tornado Warnings in Pennsylvania, 2007Every tornado warning in 2007Tornadoes in 2007
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.