Alert archive / Pennsylvania / Tornado Warnings in 2017

Tornado Warning 7, NWS Pittsburgh, PA

June 23, 2017Washington County, Pennsylvania

NWS Pittsburgh, PA issued this tornado warning at Jun 23, 2017, 2:47 PM EDT for Washington County, Pennsylvania. It was in force for 28 min. 6 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
Jun 23, 2017, 2:47 PM EDT (18:47 UTC)
Expired
Jun 23, 2017, 3:15 PM EDT
In force
28 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Washington County, PA

The radar

The Pittsburgh radar (KPBZ), 44 km from the middle of the area, began a volume at 18:48 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

TimeReportWhereRemark
Jun 23, 2:55 PM EDTTORNADO1 Ese Long Pine, PAPRELIMINARY INFORMATION FROM NWS STORM SURVEY INDICATES CLEAR TORNADO DAMAGE TO TREES AND BUILDINGS. FULL DETAILS PENDING.
Jun 23, 3:11 PM EDTTSTM WND DMG1 Nne Washington, PATREES DOWN
Jun 23, 3:15 PM EDTTSTM WND DMG1 Sse Braddock, PALARGE BRANCHES DOWN ON CRAFT ROAD
Jun 23, 3:20 PM EDTTSTM WND DMG1 Nw South Strabane, PAMULTIPLE TREES DOWN AND STRUCTURAL COLLAPSE IN AMWELL TWP
Jun 23, 3:21 PM EDTTORNADO1 Ese Long Pine, PAFULL DETAILS PROVIDED IN PUBLIC INFORMATION STATEMENT. LOCATION DETAILS AND TIME ADJUSTED HERE TO REFLECT STORM SURVEY RESULTS.
Jun 23, 3:22 PM EDTTSTM WND DMG1 Ese Long Pine, PAGARAGE AND TWO HOUSES DAMAGED

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 23, 2:20 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 6.8 hours before the alert went out and 31 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.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2017-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 36 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2017-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 263 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
36 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
520 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
263 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

777 
WFUS51 KPBZ 231847
TORPBZ
PAC125-231915-
/O.NEW.KPBZ.TO.W.0007.170623T1847Z-170623T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Pittsburgh PA
247 PM EDT FRI JUN 23 2017

The National Weather Service in Pittsburgh has issued a

* Tornado Warning for...
  Central Washington County in southwestern Pennsylvania...

* Until 315 PM EDT..

* At 247 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Washington, moving east at 30 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 and Bentleyville around 315 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Ellsworth, Finleyville, Eighty Four, Cokeburg, Scenery Hill, Green
Hills, Baidland and Beallsville.

This includes  Interstate 70 in Pennsylvania between mile markers 10
and 36.
 
Please report severe weather by calling 412-262-1988, posting to 
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. 

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.

&&

LAT...LON 4009 8034 4017 8037 4026 7999 4007 7992
TIME...MOT...LOC 1847Z 255DEG 27KT 4013 8028 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
34
3 follow-up statements
115 
WWUS51 KPBZ 231855
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
255 PM EDT FRI JUN 23 2017

PAC125-231915-
/O.CON.KPBZ.TO.W.0007.000000T0000Z-170623T1915Z/
Washington PA-
255 PM EDT FRI JUN 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM EDT FOR CENTRAL
WASHINGTON COUNTY...
    
At 254 PM EDT, a severe thunderstorm capable of producing a tornado
was located over East Washington, or over Washington, moving east at
30 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 and Bentleyville around 315 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Ellsworth, Finleyville, Eighty Four, Cokeburg and Baidland.

This includes  Interstate 70 in Pennsylvania between mile markers 17
and 36.
 
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 4011 8026 4019 8027 4026 7999 4010 7993
TIME...MOT...LOC 1854Z 255DEG 27KT 4014 8021 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
34
108 
WWUS51 KPBZ 231902
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
302 PM EDT FRI JUN 23 2017

PAC125-231915-
/O.CON.KPBZ.TO.W.0007.000000T0000Z-170623T1915Z/
Washington PA-
302 PM EDT FRI JUN 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM EDT FOR EAST
CENTRAL WASHINGTON COUNTY...
    
At 302 PM EDT, a severe thunderstorm capable of producing a tornado
was located near East Washington, or near Washington, moving east at
30 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 and Bentleyville around 315 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Eighty
Four, Finleyville and Baidland.

This includes  Interstate 70 in Pennsylvania between mile markers 22
and 32.
 
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 4013 8017 4021 8019 4026 7999 4014 7994
TIME...MOT...LOC 1902Z 255DEG 27KT 4016 8013 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
34
836 
WWUS51 KPBZ 231910
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
310 PM EDT FRI JUN 23 2017

PAC125-231920-
/O.EXP.KPBZ.TO.W.0007.000000T0000Z-170623T1915Z/
Washington PA-
310 PM EDT FRI JUN 23 2017

...THE TORNADO WARNING FOR EAST CENTRAL WASHINGTON COUNTY WILL EXPIRE
AT 315 PM EDT...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However, damaging wind remain likely, and a Severe 
Thunderstorm Warning remains in effect for the area.

A severe thunderstorm watch remains in effect until 1000 PM EDT for
southwestern Pennsylvania.

LAT...LON 4013 8017 4021 8019 4026 7999 4014 7994
TIME...MOT...LOC 1910Z 255DEG 27KT 4018 8006 

$$
34

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 23, 2:59 AM EDTAreal Flood WarningPBZArmstrong, Indiana24 hr
Jun 23, 1:48 PM EDTSpecial Weather StatementPBZLawrence27 min
Jun 23, 2:56 PM EDTFlash Flood WarningPBZAllegheny3 hr
Jun 23, 3:09 PM EDTSevere Thunderstorm WarningPBZAllegheny, Fayette, Washington, Westmoreland36 min
Jun 23, 3:29 PM EDTSpecial Weather StatementPBZGreene31 min
Jun 23, 3:40 PM EDTFlash Flood WarningPBZWashington6 hr
Jun 23, 3:47 PM EDTSevere Thunderstorm WarningPBZFayette, Washington, Westmoreland43 min
Jun 23, 3:59 PM EDTSevere Thunderstorm WarningPBZFayette, Greene46 min
Jun 23, 4:04 PM EDTFlash Flood Warning EmergencyPBZIndiana6 hr
Jun 23, 4:27 PM EDTFlash Flood WarningPBZFayette, Greene8 hr
Jun 23, 4:30 PM EDTSevere Thunderstorm WarningPBZFayette, Westmoreland30 min
Jun 23, 4:38 PM EDTFlash Flood WarningPBZWestmoreland8 hr
Jun 23, 4:40 PM EDTTornado WarningPBZGreene35 min
Jun 23, 4:46 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington44 min
Jun 23, 5:29 PM EDTSevere Thunderstorm WarningPBZFayette, Greene61 min
Jun 23, 5:35 PM EDTTornado WarningPBZFayette, Greene25 min
Jun 23, 5:57 PM EDTAreal Flood AdvisoryPBZAllegheny3 hr

Nearby

Tornado Warnings in Pennsylvania, 2017Every tornado warning in 2017Tornadoes in 2017

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.