Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 55, NWS Pittsburgh, PA

June 13, 2013Washington County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 13, 2013, 4:27 AM EDT for Washington County, Westmoreland County, Pennsylvania. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 13, 2013, 4:27 AM EDT (08:27 UTC)
Expired: Jun 13, 2013, 5:15 AM EDT
In force: 48 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

Counties Washington County, PA, Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 44 km from the middle of the area, began a volume at 08:28 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jun 12, 11:53 PM EDT	Severe Thunderstorm Watch PDS	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 8.5 hours before the alert went out and 27 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1421 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1057 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 330 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 10.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 13, 4:17 AM EDT, 10 minutes earlier.

Area forecast discussion, Jun 13, 4:17 AM EDT, 10 minutes before

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Hazardous weather outlook, Jun 13, 1:35 AM EDT, 2 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
135 AM EDT THU JUN 13 2013

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029-031-073>076-WVZ001>004-012-021>023-041-140545-
GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-
JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-
FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-
ARMSTRONG-INDIANA-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES-
FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-
MONONGALIA-PRESTON-TUCKER-
135 AM EDT THU JUN 13 2013

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS AFTERNOON...
...PARTICULARLY DANGEROUS SITUATION SEVERE THUNDERSTORM WATCH 302
IN EFFECT UNTIL 6 AM EDT EARLY THIS MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST
CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST
PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA
AND NORTHERN PANHANDLE OF WEST VIRGINIA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.
   PARTICULARLY DANGEROUS SITUATION SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jun 13, 2:41 AM EDT, 1 hour 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
241 AM EDT THU JUN 13 2013

OHZ041-050-PAZ020-WVZ001-130715-
BEAVER PA-COLUMBIANA OH-HANCOCK WV-JEFFERSON OH-
241 AM EDT THU JUN 13 2013

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN HANCOCK...NORTHERN
JEFFERSON...SOUTHEASTERN COLUMBIANA AND SOUTHERN BEAVER COUNTIES...

AT 237 AM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES SOUTH OF
SALINEVILLE...MOVING EAST AT 45 MPH.

WIND GUSTS TO 40 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

  LOCATIONS IMPACTED INCLUDE...
  SALINEVILLE...        BERGHOLZ...           HAMMONDSVILLE...
  WELLSVILLE...         NEW CUMBERLAND...
  TOMLINSON RUN STATE PARK...                 NEWELL...
  NEW MANCHESTER...     EAST LIVERPOOL...     CHESTER...
  BLACKHAWK...          HARSHAVILLE...

PLEASE REPORT SIGNIFICANT WEATHER BY CALLING...412-262-1988...POSTING
TO THE NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER
@NWSPITTSBURGH.

LAT...LON 4075 8024 4059 8021 4052 8030 4047 8091
      4056 8092 4056 8087 4064 8086 4064 8091
      4065 8092

Local storm report, Jun 13, 3:33 AM EDT, 54 minutes before

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Local storm report, Jun 13, 3:35 AM EDT, 52 minutes before

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Local storm report, Jun 13, 4:11 AM EDT, 16 minutes before

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Local storm report, Jun 13, 4:16 AM EDT, 11 minutes before

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Local storm report, Jun 13, 4:25 AM EDT, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 1:23 AM EDT	Special Weather Statement	PBZ	Washington	52 min
Jun 13, 2:41 AM EDT	Special Weather Statement	PBZ	Beaver	34 min
Jun 13, 3:18 AM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	57 min
Jun 13, 3:25 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence, Washington	65 min
Jun 13, 3:51 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Forest, Mercer, Venango	54 min
Jun 13, 4:03 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Westmoreland	57 min
Jun 13, 4:12 AM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	48 min
Jun 13, 4:27 AM EDT	Areal Flood Warning	PBZ	Allegheny	4 hr
Jun 13, 4:43 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Indiana, Jefferson, Westmoreland	77 min
Jun 13, 4:57 AM EDT	Areal Flood Warning	PBZ	Washington, Westmoreland	4 hr
Jun 13, 8:16 AM EDT	Areal Flood Advisory	PBZ	Allegheny, Westmoreland	3 hr
Jun 12, 8:00 PM EDT	Special Weather Statement	PBZ	Coshocton	45 min
Jun 12, 8:06 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Tuscarawas	39 min
Jun 12, 8:41 PM EDT	Special Weather Statement	PBZ	Guernsey	49 min
Jun 12, 8:48 PM EDT	Tornado Warning	PBZ	Coshocton, Guernsey, Harrison, Tuscarawas	27 min
Jun 12, 9:18 PM EDT	Tornado Warning	PBZ	Guernsey, Noble	27 min
Jun 12, 9:43 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Guernsey, Monroe, Noble	47 min
Jun 12, 9:49 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton	56 min
Jun 12, 10:24 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Monroe	51 min
Jun 12, 10:35 PM EDT	Tornado Warning	PBZ	Coshocton	25 min
Jun 12, 10:45 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Monroe	45 min
Jun 12, 10:56 PM EDT	Tornado Warning	PBZ	Coshocton, Guernsey, Muskingum, Tuscarawas	49 min
Jun 12, 11:08 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Tuscarawas	67 min
Jun 12, 11:14 PM EDT	Severe Thunderstorm Warning	PBZ	Monroe	46 min
Jun 12, 11:41 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Harrison, Tuscarawas	64 min
Jun 12, 11:44 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Tuscarawas	31 min
Jun 13, 12:17 AM EDT	Special Weather Statement	PBZ	Harrison	58 min
Jun 13, 1:38 AM EDT	Areal Flood Warning	PBZ	Coshocton, Guernsey, Harrison, Tuscarawas	8 hr
Jun 13, 1:52 AM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Carroll, Coshocton, Guernsey, Harrison, Monroe and 3 more	68 min
Jun 13, 2:52 AM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Harrison, Jefferson, Tuscarawas	68 min
Jun 12, 11:40 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia, Wetzel	50 min
Jun 13, 12:45 AM EDT	Special Weather Statement	PBZ	Marion, Preston	45 min
Jun 13, 12:46 AM EDT	Special Weather Statement	PBZ	Tucker	44 min
Jun 13, 1:08 AM EDT	Special Weather Statement	PBZ	Ohio	67 min
Jun 13, 1:09 AM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia, Preston	66 min
Jun 13, 2:34 AM EDT	Flash Flood Warning	PBZ	Brooke, Ohio	4 hr
Jun 13, 5:52 AM EDT	Special Weather Statement	PBZ	Tucker	53 min
Jun 13, 6:25 AM EDT	Areal Flood Warning	PBZ	Ohio	3 hr
Jun 13, 9:27 AM EDT	Special Weather Statement	PBZ	Marion, Preston	48 min
Jun 13, 10:12 AM EDT	Special Weather Statement	PBZ	Preston	33 min
Jun 13, 11:03 AM EDT	Special Weather Statement	PBZ	Tucker	42 min
Jun 13, 12:41 PM EDT	Severe Thunderstorm Warning	PBZ	Tucker	49 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2013 Every severe thunderstorm warning in 2013

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.