Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 142, NWS Pittsburgh, PA

September 2, 2014Indiana County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Sep 2, 2014, 5:32 PM EDT for Indiana County, Pennsylvania. It was in force for 28 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: Sep 2, 2014, 5:32 PM EDT (21:32 UTC)
Expired: Sep 2, 2014, 6:00 PM EDT
In force: 28 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

County Indiana County, PA

The radar

The State College radar (KCCX), 96 km from the middle of the area, began a volume at 21:33 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 12:00Z, 9.5 hours before the alert went out and 90 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: 274 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Sep 2, 5:17 PM EDT, 15 minutes earlier.

Area forecast discussion, Sep 2, 5:17 PM EDT, 15 minutes before

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Hazardous weather outlook, Sep 2, 4:20 AM EDT, 13 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
420 AM EDT TUE SEP 2 2014

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029-031-073>076-WVZ001>004-012-021>023-041-030830-
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-
420 AM EDT TUE SEP 2 2014

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...TODAY AND TONIGHT.

SLIGHT RISK FOR SEVERE STORMS TODAY.

CURRENTLY...THE SEVERE THREAT IS MARGINAL WITH DAMAGING WINDS
BEING THE GREATEST CONCERN. IF SEVERE STORMS DO DEVELOP...THEY WILL
LIKELY BE ISOLATED. ANOTHER HAZARD TODAY IS THE THREAT FOR HEAVY
DOWNPOURS. ANY STORM THAT DEVELOPS WILL BE CAPABLE OF PRODUCING
HIGH RAINFALL AMOUNTS IN A SHORT PERIOD OF TIME. THIS COULD CAUSE
LOCALIZED FLOODING IN LOW LYING AND POOR DRAINAGE AREAS.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Sep 2, 2:17 PM EDT, 3 hours 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
217 PM EDT TUE SEP 2 2014

PAZ075-076-WVZ022-023-021845-
FAYETTE PA-FAYETTE RIDGES PA-MONONGALIA WV-PRESTON WV-
217 PM EDT TUE SEP 2 2014

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL PRESTON...
NORTHEASTERN MONONGALIA AND SOUTHEASTERN FAYETTE COUNTIES...

AT 215 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR LAUREL RUN...
MOVING NORTHEAST AT 40 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM. HEAVY RAIN WILL
POND WATER ON ROADS AND QUICKLY FILL SMALL STREAMS.

  LOCATIONS IMPACTED INCLUDE...
  FAIRCHANCE...         ELLIOTTSVILLE...      HOPWOOD...
  UNIONTOWN...          CHALKHILL...          FARMINGTON...
  OHIOPYLE...

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

LAT...LON 3964 7977 3972 7986 3997 7967 3986 7941
      3982 7936 3980 7936

Special weather statement, Sep 2, 2:23 PM EDT, 3 hours 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
223 PM EDT TUE SEP 2 2014

MDZ001-WVZ023-041-021915-
GARRETT MD-PRESTON WV-TUCKER WV-
223 PM EDT TUE SEP 2 2014

...STRONG THUNDERSTORMS WILL AFFECT GARRETT...NORTHERN TUCKER AND
SOUTHERN PRESTON COUNTIES...

AT 220 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM KINGWOOD
TO FELLOWSVILLE TO 9 MILES EAST OF PHILIPPI...MOVING EAST AT 40 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS. HEAVY RAIN WILL
POND WATER ON ROADS AND QUICKLY FILL SMALL STREAMS.  INTENSE
LIGHTNING CAN BE EXPECTED FROM THESE STORMS. MOVE INDOORS WHEN A
THUNDERSTORM APPROACHES. DO NOT SEEK SHELTER UNDER TREES.

  LOCATIONS IMPACTED INCLUDE...
  TUNNELTON...          NEWBURG...            GLADESVILLE...
  FELLOWSVILLE...       KINGWOOD...           ROWLESBURG...
  HANNAHSVILLE...       SAINT GEORGE...       TERRA ALTA...
  CRANESVILLE...        CATHEDRAL STATE PARK...
  THOMAS...

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

LAT...LON 3948 7906 3941 7913 3935 7925 3930 7929
      3930 7933 3919 7948 3918 7947 3922 7934
      3920 7929 3919 7929 3914 7933 3911 7982
      3914 7984 3923 7981 3925 7986 3930 7989
      3947 7990 3973 7894 3972 7893

Local storm report, Sep 2, 3:06 PM EDT, 2 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
306 PM EDT TUE SEP 02 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0229 PM     TSTM WND DMG     ROWLESBURG              39.35N  79.68W
09/02/2014                   PRESTON            WV   911 CALL CENTER

            NUMEROUS TREES DOWN FROM ROWLESBURG TO ROUTE 50 TOWARDS
            THE PRESTON/GARRETT COUNTY BORDER

&&

EVENT NUMBER PBZ1401856

24

Special weather statement, Sep 2, 3:54 PM EDT, 1 hour 38 minutes before

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Special weather statement, Sep 2, 5:19 PM EDT, 13 minutes before

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Local storm report, Sep 2, 5:20 PM EDT, 12 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
Sep 2, 2:17 PM EDT	Special Weather Statement	PBZ	Fayette	28 min
Sep 2, 3:37 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Mercer, Venango	25 min
Sep 2, 3:49 PM EDT	Areal Flood Advisory	PBZ	Venango	3 hr
Sep 2, 3:54 PM EDT	Special Weather Statement	PBZ	Westmoreland	51 min
Sep 2, 4:30 PM EDT	Tornado Warning	PBZ	Jefferson	30 min
Sep 2, 5:19 PM EDT	Special Weather Statement	PBZ	Indiana	41 min
Sep 2, 2:23 PM EDT	Special Weather Statement	PBZ	Preston	52 min
Sep 2, 2:45 PM EDT	Severe Thunderstorm Warning	PBZ	Preston, Tucker	30 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.