Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS Pittsburgh, PA

July 3, 2012Mercer County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at Jul 3, 2012, 11:49 AM EDT for Mercer County, Pennsylvania. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 3, 2012, 11:49 AM EDT (15:49 UTC)
Expired: Jul 3, 2012, 12:30 PM EDT
In force: 41 min
Issued by: NWS Pittsburgh, PA

County Mercer County, PA

The radar

The Pittsburgh radar (KPBZ), 95 km from the middle of the area, began a volume at 15:52 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 (KPIT), launched 12:00Z, 3.8 hours before the alert went out and 109 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1812 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 3, 11:14 AM EDT, 35 minutes earlier.

Area forecast discussion, Jul 3, 11:14 AM EDT, 35 minutes before

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Hazardous weather outlook, Jul 3, 11:16 AM EDT, 33 minutes before

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In the hours before

Special weather statement, Jul 3, 11:49 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1149 AM EDT TUE JUL 3 2012

PAZ007-008-031630-
MERCER PA-VENANGO PA-
1149 AM EDT TUE JUL 3 2012

...A STRONG THUNDERSTORM WILL AFFECT MERCER AND WESTERN VENANGO
COUNTIES...

AT 1147 AM EDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES EAST OF
GREENVILLE...MOVING SOUTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THIS STORM.

SOME LOCATIONS THAT WILL BE IMPACTED INCLUDE...
  SHARON...             HERMITAGE...          GREENVILLE...
  FREDONIA...           MAURICE K GODDARD STATE PARK...
  MERCER...             STONEBORO...          COOPERSTOWN...
  POLK...               SUGARCREEK...

THIS WILL IMPACT THE FOLLOWING HIGHWAYS...

I-79 IN PENNSYLVANIA BETWEEN MILE MARKERS 116 AND 136.
I-80 BETWEEN MILE MARKERS 9 AND 34.

PLEASE REPORT SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772.

LAT...LON 4120 7988 4117 8032 4123 8052 4148 8053
      4150 8044 4149 8033 4150 8001 4154 7995
      4154 7980

FRIES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 12:32 PM EDT	Special Weather Statement	PBZ	Lawrence, Mercer	43 min
Jul 3, 1:37 PM EDT	Special Weather Statement	PBZ	Clarion	53 min
Jul 3, 2:21 PM EDT	Special Weather Statement	PBZ	Indiana	54 min
Jul 3, 2:33 PM EDT	Special Weather Statement	PBZ	Allegheny, Westmoreland	57 min
Jul 3, 3:14 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	43 min
Jul 3, 3:59 PM EDT	Special Weather Statement	PBZ	Fayette, Greene, Washington	61 min
Jul 3, 12:38 PM EDT	Special Weather Statement	PBZ	Tuscarawas	52 min
Jul 3, 1:12 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Harrison, Tuscarawas	63 min
Jul 3, 2:02 PM EDT	Heat Advisory	PBZ	Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 5 more	29 hr
Jul 3, 5:44 PM EDT	Special Weather Statement	PBZ	Muskingum	61 min
Jul 3, 5:53 PM EDT	Special Weather Statement	PBZ	Muskingum	52 min
Jul 3, 5:25 PM EDT	Severe Thunderstorm Warning	PBZ	Preston, Tucker	53 min
Jul 3, 5:30 PM EDT	Severe Thunderstorm Warning	PBZ	Garrett	47 min

Nearby

Special Weather Statements in Pennsylvania, 2012 Every special weather statement in 2012

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.