Alert archive / Pennsylvania / Tornado Warnings in 2021
Tornado Warning 28, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this tornado warning at Oct 21, 2021, 8:07 PM EDT for Allegheny County, Washington County, Pennsylvania. It was in force for 23 min. 5 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, 8:07 PM EDT (00:07 UTC)
- Expired
- Oct 21, 2021, 8:30 PM EDT
- In force
- 23 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Allegheny County, PA, Washington County, PA
The radar
The Pittsburgh radar (KPBZ), 33 km from the middle of the area, began a volume at 00:11 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, 8:07 PM EDT | TSTM WND DMG | 2 Ssw Mcmurray, PA | MULTIPLE TREES DOWN NEAR WATERDAM RD, HILL PLACE RD, AND SPRINGDALE RD. |
| Oct 21, 8:08 PM EDT | TSTM WND DMG | 1 Wsw Bower Hill, PA | 1 HOME DESTROYED AND TREES DOWN ALONG HILL PLACE ROAD |
| Oct 21, 8:08 PM EDT | TSTM WND DMG | 1 Wsw Bower Hill, PA | 1 HOME DESTROYED AND TREES DOWN ALONG HILL PLACE ROAD. POSSIBLE TORNADO |
| Oct 21, 8:08 PM EDT | TSTM WND DMG | Bower Hill, PA | MULTIPLE TREES SNAPPED AND UPROOTED. FENCE BLOWN DOWN. DAMAGE TO ABOVE GROUND POOL. DAMAGE NEAR CASTLEBROOK RD AND ROYALBROOKE DRIVE. TIME ESTIMATED ON RADAR. |
| Oct 21, 8:08 PM EDT | TSTM WND DMG | Bower Hill, PA | REPORT OF SEVERAL SNAPPED TREES AND LARGE TREE LIMBS DOWN AT HOME NEAR VENETIA. POSSIBLE TORNADO. TIME ESTIMATED BASED ON RADAR. |
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 00:00Z, 0.1 hours before the alert went out and 17 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
- 773 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -217 m²/s²
- 0-3 km storm-relative helicity
- -146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
114
WFUS51 KPBZ 220007
TORPBZ
PAC003-125-220030-
/O.NEW.KPBZ.TO.W.0028.211022T0007Z-211022T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Pittsburgh PA
807 PM EDT Thu Oct 21 2021
The National Weather Service in Pittsburgh has issued a
* Tornado Warning for...
East central Washington County in southwestern Pennsylvania...
South central Allegheny County in southwestern Pennsylvania...
* Until 830 PM EDT.
* At 807 PM EDT, a severe thunderstorm capable of producing a tornado
was located over McMurray, moving east at 25 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...
McMurray around 810 PM EDT.
Bethel Park and Gastonville around 820 PM EDT.
South Park Township, Jefferson Hills and Pleasant Hills around 825
PM EDT.
McKeesport, Clairton, Glassport and Liberty around 830 PM EDT.
Other locations impacted by this tornadic thunderstorm include Port
Vue, Elizabeth, Finleyville, West Elizabeth, Lincoln and Dravosburg.
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 4023 8016 4028 8017 4035 7987 4022 7985
TIME...MOT...LOC 0007Z 262DEG 23KT 4026 8012
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$4 follow-up statements
187
WWUS51 KPBZ 220012
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
812 PM EDT Thu Oct 21 2021
PAC003-125-220030-
/O.CON.KPBZ.TO.W.0028.000000T0000Z-211022T0030Z/
Washington PA-Allegheny PA-
812 PM EDT Thu Oct 21 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR EAST
CENTRAL WASHINGTON AND SOUTH CENTRAL ALLEGHENY COUNTIES...
At 812 PM EDT, a severe thunderstorm capable of producing a tornado
was located over McMurray, moving east at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Bethel Park and Gastonville around 820 PM EDT.
South Park Township, Jefferson Hills and Pleasant Hills around 825
PM EDT.
McKeesport, Clairton, Glassport and Liberty around 830 PM EDT.
Other locations impacted by this tornadic thunderstorm include Port
Vue, Elizabeth, Finleyville, West Elizabeth, Lincoln and Dravosburg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4024 8009 4028 8009 4035 7987 4022 7985
TIME...MOT...LOC 0012Z 262DEG 23KT 4026 8008
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$640
WWUS51 KPBZ 220017
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
817 PM EDT Thu Oct 21 2021
PAC003-125-220030-
/O.CON.KPBZ.TO.W.0028.000000T0000Z-211022T0030Z/
Washington PA-Allegheny PA-
817 PM EDT Thu Oct 21 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR EAST
CENTRAL WASHINGTON AND SOUTH CENTRAL ALLEGHENY COUNTIES...
At 817 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Gastonville, moving east at 25 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...
Gastonville around 820 PM EDT.
South Park Township and Jefferson Hills around 825 PM EDT.
Pleasant Hills around 830 PM EDT.
Clairton around 835 PM EDT.
Glassport and Liberty around 840 PM EDT.
McKeesport around 845 PM EDT.
Other locations impacted by this tornadic thunderstorm include Port
Vue, Elizabeth, Finleyville, West Elizabeth, Lincoln and Dravosburg.
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 4024 8004 4028 8005 4035 7987 4022 7985
TIME...MOT...LOC 0017Z 262DEG 23KT 4026 8004
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$164
WWUS51 KPBZ 220022
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
822 PM EDT Thu Oct 21 2021
PAC003-125-220030-
/O.CON.KPBZ.TO.W.0028.000000T0000Z-211022T0030Z/
Washington PA-Allegheny PA-
822 PM EDT Thu Oct 21 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR
NORTHEASTERN WASHINGTON AND SOUTH CENTRAL ALLEGHENY COUNTIES...
At 822 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Gastonville, moving east at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Clairton and Glassport around 835 PM EDT.
Liberty around 840 PM EDT.
Other locations impacted by this tornadic thunderstorm include West
Elizabeth, Elizabeth and Lincoln.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Please report severe weather by calling 412-262-1988, posting to
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH.
&&
LAT...LON 4024 7998 4027 7998 4033 7987 4022 7985
TIME...MOT...LOC 0022Z 262DEG 23KT 4027 7999
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$011
WWUS51 KPBZ 220027
SVSPBZ
Severe Weather Statement
National Weather Service Pittsburgh PA
827 PM EDT Thu Oct 21 2021
PAC003-125-220036-
/O.EXP.KPBZ.TO.W.0028.000000T0000Z-211022T0030Z/
Washington PA-Allegheny PA-
827 PM EDT Thu Oct 21 2021
...THE TORNADO WARNING FOR NORTHEASTERN WASHINGTON AND SOUTH CENTRAL
ALLEGHENY COUNTIES WILL EXPIRE AT 830 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 4024 7998 4027 7998 4033 7987 4022 7985
TIME...MOT...LOC 0026Z 262DEG 23KT 4027 7997
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 8:59 PM EDT | Special Weather Statement | PBZ | Indiana | 31 min |
| Oct 21, 9:06 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 24 min |
| Oct 21, 9:15 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 15 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.