Alert archive / Pennsylvania / Tornado Warnings in 2017

Tornado Warning 8, NWS Pittsburgh, PA

June 23, 2017Greene County, Pennsylvania

NWS Pittsburgh, PA issued this tornado warning at Jun 23, 2017, 4:40 PM EDT for Greene County, Pennsylvania. It was in force for 35 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
Jun 23, 2017, 4:40 PM EDT (20:40 UTC)
Expired
Jun 23, 2017, 5:15 PM EDT
In force
35 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Greene County, PA

The radar

The Pittsburgh radar (KPBZ), 82 km from the middle of the area, began a volume at 20:40 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, 4:55 PM EDTFUNNEL CLOUDPine Bank, PAFUNNEL CLOUD REPORTED IN GILMORE TOWNSHIP
Jun 23, 5:00 PM EDTTSTM WND DMGSpraggs, PATREES AND WIRES DOWN
Jun 23, 5:14 PM EDTTSTM WND DMG11 Sw Waynesburg, PASEVERAL TREES DOWN
Jun 23, 5:18 PM EDTTSTM WND DMG10 Ssw Waynesburg, PASEVERAL TREES DOWN
Jun 23, 5:24 PM EDTTSTM WND DMG9 Nw Cassville, PASEVERAL TREES DOWN

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, 8.7 hours before the alert went out and 70 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.

964 
WFUS51 KPBZ 232040
TORPBZ
PAC059-232115-
/O.NEW.KPBZ.TO.W.0008.170623T2040Z-170623T2115Z/

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

The National Weather Service in Pittsburgh has issued a

* Tornado Warning for...
  Southeastern Greene County in southwestern Pennsylvania...

* Until 515 PM EDT..

* At 439 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Hundred, or 16 miles north of Mannington, 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...
  Waynesburg around 505 PM EDT. 
  Jefferson Boro around 510 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Bobtown, Aleppo, Rogersville, Spraggs, New Freeport, Mount Morris and
Brave.

This includes  Interstate 79 in Pennsylvania between mile markers 2
and 16.
 
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 3973 8050 3982 8051 3997 8004 3974 7996
TIME...MOT...LOC 2039Z 255DEG 38KT 3976 8045 

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

$$
34
2 follow-up statements
215 
WWUS51 KPBZ 232057
SVSPBZ

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

PAC059-232115-
/O.CON.KPBZ.TO.W.0008.000000T0000Z-170623T2115Z/
Greene PA-
457 PM EDT FRI JUN 23 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR EASTERN
GREENE COUNTY...
        
At 457 PM EDT, a severe thunderstorm capable of producing a tornado
was located 9 miles southwest of Waynesburg, moving east at 30 mph.

HAZARD...Tornado. 

SOURCE...Weather spotters reported a funnel cloud. 

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...
  Waynesburg around 515 PM EDT. 

Other locations impacted by this tornadic thunderstorm include
Rogersville, Spraggs, Bobtown, Mount Morris and Brave.

This includes  Interstate 79 in Pennsylvania between mile markers 2
and 16.
 
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 3973 8036 3986 8038 3997 8004 3974 7996
TIME...MOT...LOC 2057Z 256DEG 25KT 3979 8030 

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

$$
34
971 
WWUS51 KPBZ 232115
SVSPBZ

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

PAC059-232125-
/O.EXP.KPBZ.TO.W.0008.000000T0000Z-170623T2115Z/
Greene PA-
515 PM EDT FRI JUN 23 2017

...THE TORNADO WARNING FOR EASTERN GREENE COUNTY HAS EXPIRED...
    
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 3973 8036 3986 8038 3997 8004 3974 7996
TIME...MOT...LOC 2115Z 255DEG 38KT 3984 8007 

$$
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, 2:47 PM EDTTornado WarningPBZWashington28 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, 4:46 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.