Alert archive / Pennsylvania / Special Weather Statements in 2014

Special Weather Statement, NWS Pittsburgh, PA

May 27, 2014Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at May 27, 2014, 3:08 PM EDT for Westmoreland County, Pennsylvania. It was in force for 37 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: May 27, 2014, 3:08 PM EDT (19:08 UTC)
Expired: May 27, 2014, 3:45 PM EDT
In force: 37 min
Issued by: NWS Pittsburgh, PA

County Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 49 km from the middle of the area, began a volume at 19:09 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, 7.1 hours before the alert went out and 37 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: 148 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 May 27, 2:09 PM EDT, 59 minutes earlier.

Area forecast discussion, May 27, 2:09 PM EDT, 59 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
209 PM EDT TUE MAY 27 2014

.SYNOPSIS...
A SLOW MOVING COLD FRONT WITH SEVERAL UPPER LEVEL DISTURBANCES
WILL BRING SHOWERS AND THUNDERSTORMS INTO MIDWEEK.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
AREA OF SHOWERS AND STORMS WITH SHORTWAVE HAS ALREADY BEGUN TO
SHIFT EAST OF THE RIDGES WHERE BETTER INSTABILITY WILL BE AVAILABLE.
PULSE STORMS REACHING MINIMAL SEVERE NEXT 2 TO 3 HOURS AND BEST
CHANCE FOR SEVERE IS ACROSS THE HIGHER SOUTHEAST RIDGES. EXPECT
SHOWERS TO DIMINISH QUICKLY THIS EVENING AS SHORTWAVE EXITS.
LOWERED POPS BELOW LIKELY FOR TONIGHT AND EVEN THIS MAY NOT BE LOW
ENOUGH AS WILL NEED TO WAIT FOR NEXT SHORTWAVE ALONG FRONT DRAPED
ACROSS THE GREAT LAKES.

BACK TO LIKELY POPS WITH THE FRONT AND NEXT SHORTWAVE WEDNESDAY.
TEMPERATURES A CLOSE BEND OF MODEL MOS.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY/...
FRONT SAGS SOUTH WEDNESDAY NIGHT AND THURSDAY WITH HIGHEST POPS
ACROSS THE SOUTHERN RIDGES AND ENDING BY LATE DAY THURSDAY.
TEMPERATURES WILL COOL BACK TOWARD SEASONAL AVERAGES.

&&

.LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/...
RIDGE OF HIGH PRESSURE WILL DOMINATE THE WEEKEND WITH SEASONAL TEMPERATURES.
THE NEXT SYSTEM APPROACHES AND INCREASES THE CHANCE OF RAIN EARLY
NEXT WEEK. LITTLE DIFFERENCES BETWEEN THE ECMWF AND GFS HAVE LED
TO NO HIGHER THAN CHANCE POPS IN THE FORECAST FOR MON/TUE.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
STILL A WINDOW FOR BRIEF MVFR/IFR FOR PORTS SOUTH OF PITTSBURGH AS
SHORTWAVE WITH BANDS OF SHOWERS AND STORMS WORK SOUTH AND EAST.
SHOWERS WILL END TOWARD SUNSET WITH MVFR FOG AND STRATUS EXPECTED
BEFORE DAYBREAK.

.OUTLOOK.../WEDNESDAY THROUGH SUNDAY/...
A CHANCE FOR SHOWERS AND THUNDERSTORMS REMAINS IN THE FORECAST
INTO THURSDAY...BRINGING A CHANCE FOR RESTRICTIONS ESPECIALLY
SOUTHERN PORTS. VFR CONDITIONS ARE EXPECTED THURSDAY NIGHT
THROUGH SUNDAY.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

Hazardous weather outlook, May 27, 9:13 AM EDT, 5 hours 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
913 AM EDT TUE MAY 27 2014

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029-031-073>076-WVZ001>004-012-021>023-041-281315-
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-
913 AM EDT TUE MAY 27 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.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

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

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, May 27, 1:59 PM EDT, 1 hour 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
159 PM EDT TUE MAY 27 2014

OHZ041-050-PAZ020-WVZ001-271815-
BEAVER PA-COLUMBIANA OH-HANCOCK WV-JEFFERSON OH-
159 PM EDT TUE MAY 27 2014

...A STRONG THUNDERSTORM WILL AFFECT HANCOCK...NORTHEASTERN
JEFFERSON...SOUTHEASTERN COLUMBIANA AND SOUTHWESTERN BEAVER
COUNTIES...

AT 156 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES SOUTH OF
WELLSVILLE...MOVING EAST AT 25 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM. THIS COULD KNOCK
DOWN SMALL BRANCHES.

  LOCATIONS IMPACTED INCLUDE...
  WELLSVILLE...         HAMMONDSVILLE...      NEW CUMBERLAND...
  TORONTO...            NEWELL...
  TOMLINSON RUN STATE PARK...                 NEW MANCHESTER...
  EAST LIVERPOOL...     CHESTER...            SHIPPINGPORT...
  RACCOON CREEK STATE PARK...                 HARSHAVILLE...

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

LAT...LON 4071 8031 4048 8036 4048 8052 4045 8052
      4044 8074 4067 8071

98

Special weather statement, May 27, 2:07 PM EDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
207 PM EDT TUE MAY 27 2014

PAZ074-076-271830-
FAYETTE RIDGES PA-WESTMORELAND RIDGES PA-
207 PM EDT TUE MAY 27 2014

...A STRONG THUNDERSTORM WILL AFFECT EXTREME SOUTH CENTRAL
WESTMORELAND AND NORTHEASTERN FAYETTE COUNTIES...

AT 205 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES WEST OF
SEVEN SPRINGS...MOVING EAST AT 25 MPH.

THIS STORM WILL PRODUCE NICKEL SIZE HAIL.

  LOCATIONS IMPACTED INCLUDE...
  SEVEN SPRINGS...

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

LAT...LON 4002 7931 3998 7933 3997 7934 4001 7945
      4009 7942 4003 7930

98

Special weather statement, May 27, 2:08 PM EDT, 1 hour before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
208 PM EDT TUE MAY 27 2014

PAZ023-074-271830-
INDIANA PA-WESTMORELAND RIDGES PA-
208 PM EDT TUE MAY 27 2014

...A STRONG THUNDERSTORM WILL AFFECT EXTREME EAST CENTRAL
WESTMORELAND AND SOUTH CENTRAL INDIANA COUNTIES...

AT 205 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES NORTH OF
NEW FLORENCE...MOVING EAST AT 25 MPH.

THIS STORM WILL PRODUCE NICKEL SIZE HAIL. HEAVY RAIN WILL POND WATER
ON ROADS AND QUICKLY FILL SMALL STREAMS.

  LOCATIONS IMPACTED INCLUDE...
  NEW FLORENCE...       ARMAGH...

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

LAT...LON 4036 7899 4032 7902 4036 7919 4048 7915
      4047 7892

98

Special weather statement, May 27, 2:14 PM EDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
214 PM EDT TUE MAY 27 2014

PAZ021-029-271845-
ALLEGHENY PA-WASHINGTON PA-
214 PM EDT TUE MAY 27 2014

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL WASHINGTON AND
WEST CENTRAL ALLEGHENY COUNTIES...

AT 209 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTH OF
AVELLA...MOVING EAST AT 30 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM. THIS COULD BRING
DOWN SMALL TREE BRANCHES.

  LOCATIONS IMPACTED INCLUDE...
  AVELLA...             BURGETTSTOWN...       MCDONALD...
  CANONSBURG...         OAKDALE...

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

LAT...LON 4022 8016 4028 8052 4039 8052 4042 8017

98

Special weather statement, May 27, 3:06 PM EDT, 2 minutes before

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Special weather statement, May 27, 3:08 PM EDT, 0 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
May 27, 12:56 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	49 min
May 27, 1:27 PM EDT	Special Weather Statement	PBZ	Washington	18 min
May 27, 1:59 PM EDT	Special Weather Statement	PBZ	Beaver	16 min
May 27, 2:07 PM EDT	Special Weather Statement	PBZ	Fayette	23 min
May 27, 2:08 PM EDT	Special Weather Statement	PBZ	Indiana	22 min
May 27, 2:14 PM EDT	Special Weather Statement	PBZ	Washington	31 min
May 27, 3:25 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	20 min
May 27, 3:34 PM EDT	Special Weather Statement	PBZ	Fayette	41 min
May 27, 3:47 PM EDT	Special Weather Statement	PBZ	Westmoreland	28 min
May 27, 3:58 PM EDT	Areal Flood Advisory	PBZ	Westmoreland	3 hr
May 27, 4:27 PM EDT	Special Weather Statement	PBZ	Greene	33 min
May 27, 4:39 PM EDT	Areal Flood Warning	PBZ	Westmoreland	3 hr
May 27, 6:59 PM EDT	Special Weather Statement	PBZ	Allegheny	31 min
May 27, 7:59 PM EDT	Special Weather Statement	PBZ	Allegheny	46 min
May 27, 1:09 PM EDT	Special Weather Statement	PBZ	Carroll	21 min
May 27, 1:30 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Jefferson	30 min
May 27, 7:01 PM EDT	Special Weather Statement	PBZ	Guernsey	29 min
May 27, 7:05 PM EDT	Areal Flood Advisory	PBZ	Muskingum	4 hr
May 27, 4:54 AM EDT	Special Weather Statement	PBZ	Tucker	51 min
May 27, 1:16 PM EDT	Special Weather Statement	PBZ	Wetzel	14 min
May 27, 5:41 PM EDT	Special Weather Statement	PBZ	Preston	34 min
May 27, 3:06 PM EDT	Special Weather Statement	PBZ	Garrett	24 min

Nearby

Special Weather Statements in Pennsylvania, 2014 Every special weather statement 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.