Alert archive / Pennsylvania / Tornado Warnings in 2021
Tornado Warning 22, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this tornado warning at Oct 21, 2021, 6:56 PM EDT for Beaver County, Butler County, Lawrence County, Pennsylvania. It was in force for 19 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 21, 2021, 6:56 PM EDT (22:56 UTC)
- Expired
- Oct 21, 2021, 7:15 PM EDT
- In force
- 19 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Beaver County, PA, Butler County, PA, Lawrence County, PA
The radar
The Pittsburgh radar (KPBZ), 37 km from the middle of the area, began a volume at 22:59 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 |
|---|---|---|---|
| Oct 21, 6:56 PM EDT | TORNADO | 1 Ene New Galilee, PA | EF1 TORNADO CONFIRMED NEAR NEW GALILEE. MULTIPLE SNAPPED TREES WERE SEEN WITH THIS TORNADO. |
| Oct 21, 7:11 PM EDT | TORNADO | 2 Nne Goehring, PA | EF1 TORNADO CONFIRMED STARTING NEAR FRANKLING TOWNSHIP IN BEAVER COUNTY AND ENDING JUST WEST OF PERRY HIGHWAY IN BUTLER COUNTY. NUMEROUS TREES WERE SNAPPED AMONG OTHER DAMAGE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 10.9 hours before the alert went out and 51 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1175 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
814
WFUS51 KPBZ 212256
TORPBZ
PAC007-019-073-212315-
/O.NEW.KPBZ.TO.W.0022.211021T2256Z-211021T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Pittsburgh PA
656 PM EDT Thu Oct 21 2021
The National Weather Service in Pittsburgh has issued a
* Tornado Warning for...
Northeastern Beaver County in western Pennsylvania...
Southern Lawrence County in western Pennsylvania...
West central Butler County in west central Pennsylvania...
* Until 715 PM EDT.
* At 656 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Ellwood City, or near Beaver Falls, moving east at
45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Ellwood City around 700 PM EDT.
Zelienople around 710 PM EDT.
Meridian around 715 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Moraine State Park, McConnells Mill, Homewood, Portersville, Harmony,
Koppel, Connoquenessing, New Galilee, New Beaver and Rose Point Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4079 8041 4092 8043 4103 7989 4079 7986
TIME...MOT...LOC 2256Z 262DEG 39KT 4085 8034
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$2 follow-up statements
781
WWUS51 KPBZ 212305
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
705 PM EDT Thu Oct 21 2021
PAC007-019-073-212315-
/O.CON.KPBZ.TO.W.0022.000000T0000Z-211021T2315Z/
Beaver PA-Lawrence PA-Butler PA-
705 PM EDT Thu Oct 21 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR
NORTHEASTERN BEAVER...SOUTHEASTERN LAWRENCE AND WEST CENTRAL BUTLER
COUNTIES...
At 705 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Ellwood City, or 7 miles northeast of Beaver Falls,
moving east at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Butler, Homeacre-Lyndora, Shanor-Northvue, Meridian, Meadowood and
Oak Hills around 730 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Moraine State Park, Connoquenessing, Portersville, Harmony, Koppel,
Ellport, Prospect, West Sunbury, Wampum and Nixon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4081 8032 4090 8033 4103 7989 4079 7986
TIME...MOT...LOC 2305Z 265DEG 34KT 4086 8025
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$563
WWUS51 KPBZ 212314
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
714 PM EDT Thu Oct 21 2021
PAC007-019-073-212324-
/O.EXP.KPBZ.TO.W.0022.000000T0000Z-211021T2315Z/
Beaver PA-Lawrence PA-Butler PA-
714 PM EDT Thu Oct 21 2021
...THE TORNADO WARNING FOR NORTHEASTERN BEAVER...SOUTHEASTERN
LAWRENCE AND WEST CENTRAL BUTLER COUNTIES WILL EXPIRE AT 715 PM
EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 4081 8032 4090 8033 4103 7989 4079 7986
TIME...MOT...LOC 2314Z 262DEG 39KT 4087 8015
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 2:03 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer, Venango | 27 min |
| Oct 21, 2:36 PM EDT | Special Weather Statement | PBZ | Mercer, Venango | 24 min |
| Oct 21, 2:50 PM EDT | Special Weather Statement | PBZ | Lawrence | 25 min |
| Oct 21, 3:18 PM EDT | Special Weather Statement | PBZ | Butler, Lawrence | 27 min |
| Oct 21, 3:49 PM EDT | Special Weather Statement | PBZ | Clarion, Forest, Venango | 41 min |
| Oct 21, 4:08 PM EDT | Special Weather Statement | PBZ | Washington | 37 min |
| Oct 21, 4:32 PM EDT | Special Weather Statement | PBZ | Clarion, Forest, Jefferson | 43 min |
| Oct 21, 4:47 PM EDT | Special Weather Statement | PBZ | Allegheny, Washington | 43 min |
| Oct 21, 5:48 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana, Jefferson | 27 min |
| Oct 21, 6:00 PM EDT | Special Weather Statement | PBZ | Lawrence, Mercer, Venango | 45 min |
| Oct 21, 6:18 PM EDT | Special Weather Statement | PBZ | Beaver | 42 min |
| Oct 21, 6:42 PM EDT | Tornado Warning | PBZ | Mercer | 18 min |
| Oct 21, 6:57 PM EDT | Tornado Warning | PBZ | Washington | 33 min |
| Oct 21, 7:13 PM EDT | Tornado Warning | PBZ | Greene, Washington | 32 min |
| Oct 21, 7:19 PM EDT | Special Weather Statement | PBZ | Allegheny, Beaver, Butler | 41 min |
| Oct 21, 7:24 PM EDT | Tornado Warning | PBZ | Butler | 36 min |
| Oct 21, 7:26 PM EDT | Tornado Warning | PBZ | Washington | 34 min |
| Oct 21, 7:40 PM EDT | Tornado Warning | PBZ | Allegheny, Beaver, Westmoreland | 20 min |
Nearby
Tornado Warnings in Pennsylvania, 2021Every tornado warning in 2021Tornadoes in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.