Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 68, NWS Pittsburgh, PA

June 18, 2014Armstrong County, Butler County, Indiana County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 18, 2014, 12:14 AM EDT for Armstrong County, Butler County, Indiana County, Pennsylvania. It was in force for 46 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 18, 2014, 12:14 AM EDT (04:14 UTC)
Expired: Jun 18, 2014, 1:00 AM EDT
In force: 46 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

Counties Armstrong County, PA, Butler County, PA, Indiana County, PA

The radar

The Pittsburgh radar (KPBZ), 68 km from the middle of the area, began a volume at 04:14 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 nearest sounding before it

Pittsburgh, PA (KAGC), launched 00:00Z, 4.2 hours before the alert went out and 67 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: 521 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1673 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

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 17, 11:09 PM EDT, 1 hour 5 minutes earlier.

Area forecast discussion, Jun 17, 11:09 PM EDT, 1 hour 5 minutes before

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Hazardous weather outlook, Jun 17, 9:44 PM EDT, 2 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
944 PM EDT TUE JUN 17 2014

PAZ007>009-015-016-190145-
MERCER-VENANGO-FOREST-CLARION-JEFFERSON PA-
944 PM EDT TUE JUN 17 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST PENNSYLVANIA AND
WEST CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT WITH THE
PRIMARY HAZARDS BEING DAMAGING WIND GUSTS AND HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A SLIGHT RISK OF SEVERE THUNDERSTORMS WILL CONTINUE ON WEDNESDAY
WITH THE PRIMARY SEVERE THREATS AGAIN COMING FROM DAMAGING WIND
GUSTS AND HAIL.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ013-014-020>023-029-031-
073>076-WVZ001>004-012-021>023-041-190145-
GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-
JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-LAWRENCE-BUTLER-
BEAVER-ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-GREENE-WESTMORELAND-
WESTMORELAND RIDGES-FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-
MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON-TUCKER-
944 PM EDT TUE JUN 17 2014

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

.DAY ONE...TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON WEDNESDAY WITH
THE PRIMARY SEVERE THREATS COMING FROM DAMAGING WIND GUSTS AND
HAIL.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

15

In the hours before

Special weather statement, Jun 17, 8:56 PM EDT, 3 hours 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
856 PM EDT TUE JUN 17 2014

PAZ008-180130-
VENANGO PA-
856 PM EDT TUE JUN 17 2014

...STRONG WIND GUSTS WILL AFFECT VENANGO COUNTY...

AT 851 PM EDT...THE LEADING EDGE OF OUTFLOW WIND GUSTS WERE LOCATED
4 MILES NORTHWEST OF COOPERSTOWN AND WERE MOVING SOUTHEAST AT 40 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITHIN THIS AREA...WHICH IS FROM A
THUNDERSTORM OVER CRAWFORD COUNTY.

  LOCATIONS IMPACTED INCLUDE...
  COOPERSTOWN...        OIL CREEK STATE PARK...
  OIL CITY...           SENECA...             VAN...

PLEASE REPORT SIGNIFICANT WEATHER BY POSTING TO THE NWS PITTSBURGH
FACEBOOK PAGE OR BY USING TWITTER @NWSPITTSBURGH.

LAT...LON 4162 7973 4156 7953 4129 7963 4149 8000
      4158 7988 4158 7987 4163 7982

15

Special weather statement, Jun 17, 9:47 PM EDT, 2 hours 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
947 PM EDT TUE JUN 17 2014

PAZ008-009-015-180230-
CLARION PA-FOREST PA-VENANGO PA-
947 PM EDT TUE JUN 17 2014

...STRONG THUNDERSTORMS WILL AFFECT FOREST...NORTHEASTERN CLARION AND
NORTHERN VENANGO COUNTIES...

AT 944 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 4 MILES
NORTHWEST OF WEST HICKORY TO 5 MILES SOUTHEAST OF CONNEAUT LAKE...
MOVING EAST AT 45 MPH.

WIND GUSTS TO 50 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.

  LOCATIONS IMPACTED INCLUDE...
  PLEASANTVILLE...      WEST HICKORY...       BALLTOWN...
  OIL CREEK STATE PARK...                     COOPERSTOWN...
  KELLETTVILLE...       TIONESTA...           OIL CITY...
  MARIENVILLE...        REDCLYFFE...

PLEASE REPORT SIGNIFICANT WEATHER BY POSTING TO THE NWS PITTSBURGH
FACEBOOK PAGE OR BY USING TWITTER @NWSPITTSBURGH.

LAT...LON 4155 7895 4144 7895 4145 7906 4139 7909
      4136 7943 4148 8000 4150 8001 4162 7983
      4163 7932

Local storm report, Jun 17, 10:21 PM EDT, 1 hour 53 minutes before

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Special weather statement, Jun 17, 10:44 PM EDT, 1 hour 30 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 17, 8:56 PM EDT	Special Weather Statement	PBZ	Venango	34 min
Jun 17, 9:47 PM EDT	Special Weather Statement	PBZ	Forest	43 min
Jun 17, 9:57 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson, Venango	48 min
Jun 17, 10:44 PM EDT	Special Weather Statement	PBZ	Clarion, Forest, Jefferson, Mercer, Venango	46 min
Jun 17, 11:00 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Jefferson	45 min
Jun 17, 11:06 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	24 min
Jun 17, 11:28 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Indiana, Jefferson, Lawrence and 1 more	47 min
Jun 18, 1:08 AM EDT	Special Weather Statement	PBZ	Armstrong, Butler, Indiana, Lawrence	52 min
Jun 18, 3:06 AM EDT	Areal Flood Advisory	PBZ	Allegheny, Beaver, Butler, Lawrence, Washington	4 hr
Jun 18, 5:41 AM EDT	Severe Thunderstorm Warning	PBZ	Beaver	49 min
Jun 18, 8:24 AM EDT	Special Weather Statement	PBZ	Butler	51 min
Jun 18, 9:46 AM EDT	Areal Flood Advisory	PBZ	Clarion, Venango	3 hr
Jun 18, 12:42 PM EDT	Special Weather Statement	PBZ	Fayette	63 min
Jun 18, 3:56 PM EDT	Special Weather Statement	PBZ	Greene	49 min
Jun 18, 5:46 PM EDT	Flash Flood Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 5 more	15 hr
Jun 18, 6:04 PM EDT	Severe Thunderstorm Warning	PBZ	Venango	41 min
Jun 18, 6:33 PM EDT	Special Weather Statement	PBZ	Lawrence, Mercer, Venango	27 min
Jun 18, 6:45 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Mercer, Venango	60 min
Jun 18, 7:46 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	44 min
Jun 18, 3:36 AM EDT	Areal Flood Warning	PBZ	Columbiana	4 hr
Jun 18, 4:54 AM EDT	Special Weather Statement	PBZ	Carroll	66 min
Jun 18, 4:57 AM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Jefferson	48 min
Jun 18, 4:15 PM EDT	Severe Thunderstorm Warning	PBZ	Monroe	45 min
Jun 18, 6:49 PM EDT	Severe Thunderstorm Warning	PBZ	Columbiana	41 min
Jun 18, 7:13 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton	32 min
Jun 18, 7:43 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Tuscarawas	47 min
Jun 18, 4:07 PM EDT	Special Weather Statement	PBZ	Wetzel	38 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2014 Every severe thunderstorm warning in 2014

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.