Alert archive / Pennsylvania / Special Weather Statements in 2013

Special Weather Statement, NWS Pittsburgh, PA

August 7, 2013Clarion County, Jefferson County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at Aug 7, 2013, 4:18 PM EDT for Clarion County, Jefferson County, Pennsylvania. It was in force for 42 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: Aug 7, 2013, 4:18 PM EDT (20:18 UTC)
Expired: Aug 7, 2013, 5:00 PM EDT
In force: 42 min
Issued by: NWS Pittsburgh, PA

Counties Clarion County, PA, Jefferson County, PA

The radar

The State College radar (KCCX), 85 km from the middle of the area, began a volume at 20:18 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, 8.3 hours before the alert went out and 137 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: 22 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 1075 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Aug 7, 2:43 PM EDT, 1 hour 35 minutes earlier.

Area forecast discussion, Aug 7, 2:43 PM EDT, 1 hour 35 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
243 PM EDT WED AUG 7 2013

.SYNOPSIS...
UNSETTLED WEATHER WILL CONTINUE THE REST OF THE WEEK AS A SLOW
MOVING COLD FRONT CROSSES THE REGION.

&&

.NEAR TERM /THROUGH TONIGHT/...
SHWRS/TSTMS CONT TO DVLP AND MOVE ALG AN OLD OUTFLOW BNDRY ACRS
OH. INSTBY CHARTS AND RECENT MESO DATA SHOW MARGINAL CONDS FOR SVR
WEA N OF PIT. THREAT HAS BEEN LOCALIZED TO CELL MERGERS SO FAR IN
OH. BEST SHEAR SHOULD REMAIN ACRS FAR NRN PA AND SRN ONTARIO. WL
MONITOR ANY TRAINING WITH LCLY HVY RAINFALL AS WELL. ELSW...SCT
TSTMS HAVE DVLPD IN A PUSH OF MOIST AIR ACRS OH AND WV. EXP THIS
GENERAL SCENARIO TO CONT THIS EVE UNTIL CNVCTN BEGINS TO DMNSH AFT
SUNSET.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
A CDFNT WL MOV S INTO THE AREA THU AND THU NGT AS ANOTHER SHRTWV
MOVS ACRS THE OH VLY. BROUGHT IN LIKELY POPS FM S TO N LT THU AND
THU NGT. INSTBY IS SOMEWHAT LMTD BUT PLENTY OF MOISTURE SHOULD
ALLOW FOR SHWRS AND PSBL TSTMS. WL MONITOR HEAVY RAINFALL
POTENTIAL BUT ATTM NO FOCUSED AREA FOR A WDSPRD FLOOD THREAT. THE
FNT WL CONT TO DRIFT SWD FRI INTO CNTRL/SRN PA AND OH. THE SHRTWV
WL EXIT FRI MRNG BUT ANOTHER IS EXPD TO MOVE IN LATE FRI WITH
ADDNL SHWRS/TSTMS. WARM AND HUMID CONDS WL CONT THRU THE PD.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
THE CDFNT SHOULD SHIFT SWD SAT NGT AS A SECONDARY TROF/CDFNT DROPS
S ACRS THE GT LKS. THESE SYSTEMS SHOULD MOVE OUT OF THE AREA BY
SUN WITH BLDG HIGH PRES INTO ERLY NXT WK. TEMPS SHOULD AVG A
LITTLE BLO SEASONAL LVLS.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
GENL VFR CAN BE EXPECTED FOR MUCH OF THE DAY...BUT DEGRADATION IS
FORECAST LTR THIS AFTN AS A CDFNT MOVG ACRS THE GREAT LAKES WL LIKELY
DVLP SOME SHWRS AND TSTMS OVR THE UPR OH REGION.

HAVE THUS INCLUDED A VCTS FOR PORTS FM BVI NWD AND VCSH ELSEWHERE...BUT
HAVE OPTED OUT OF AN OVRNGT MENTION AS MDLS INDICATE WANING SHRTWV SPPRT
TO ACCOMPANY THE EVENING STABILIZATION. OTHERWISE...WITH ABUNDANT LLVL
MSTR...AND CONTD ASCENT VIA APPRCHG FRONT...RESTRICTIONS FM CIGS AND
VSBY ARE ANTICIPATED. INTIAL PROGNOSIS WL BE OF MVFR...BUT FUTURE AMENDMENTS
MAY BE MORE PESSIMISTIC.

OUTLOOK.../THURSDAY THROUGH MONDAY/...
SOME RESTRICTIONS ARE ANTICIPATED FM MRNG CIGS AND FOG...IN ADDITION
TO SHWRS AND TSTMS ON THU AND FRI. GENL VFR IS EXPECTED WITH WEEKEND
HIGH PRES...ALTHOUGH MRNG RESTRICTIONS MAY LINGER OVR SRN PORTS DUE
TO FRONTAL VICINITY.

&&

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

&&

07/15

Hazardous weather outlook, Aug 7, 3:52 PM EDT, 26 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
352 PM EDT WED AUG 7 2013

OHZ039>041-048>050-058-059-PAZ007>009-013>016-020>023-029-031-
073>076-WVZ001>004-081200-
TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-
GUERNSEY-BELMONT-MERCER-VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-
JEFFERSON PA-BEAVER-ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-GREENE-
WESTMORELAND-WESTMORELAND RIDGES-FAYETTE-FAYETTE RIDGES-HANCOCK-
BROOKE-OHIO-MARSHALL-
352 PM EDT WED AUG 7 2013

...SEVERE THUNDERSTORM WATCH 482 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

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

   SEVERE THUNDERSTORM WATCH.

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

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.

MDZ001-OHZ057-068-069-WVZ012-021>023-041-081200-
GARRETT-MUSKINGUM-NOBLE-MONROE-WETZEL-MARION-MONONGALIA-PRESTON-
TUCKER-
352 PM EDT WED AUG 7 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

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, Aug 7, 2:59 PM EDT, 1 hour 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
259 PM EDT WED AUG 7 2013

PAZ007-008-014-015-072000-
BUTLER PA-CLARION PA-MERCER PA-VENANGO PA-
259 PM EDT WED AUG 7 2013

...STRONG THUNDERSTORMS WILL AFFECT EASTERN MERCER...EXTREME
NORTHEASTERN BUTLER...VENANGO AND WEST CENTRAL CLARION COUNTIES...

AT 257 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 6 MILES
NORTHWEST OF MAURICE K GODDARD STATE PARK TO 2 MILES SOUTH OF
HARLANSBURG.  THESE STORMS ARE NEARLY STATIONARY.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

  LOCATIONS IMPACTED INCLUDE...
  MERCER...             VAN...                SUGARCREEK...
  STONEBORO...          SENECA...             POLK...
  OIL CITY...           MAURICE K GODDARD STATE PARK...
  KENNERDELL...         FRANKLIN...           EMLENTON...
  COOPERSTOWN...

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

LAT...LON 4149 7954 4129 7954 4116 7962 4115 7968
      4117 7969 4115 7970 4114 7974 4117 8043
      4135 8022 4149 8023 4150 8001 4153 7996

Special weather statement, Aug 7, 3:04 PM EDT, 1 hour 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
304 PM EDT WED AUG 7 2013

PAZ007-013-072000-
LAWRENCE PA-MERCER PA-
304 PM EDT WED AUG 7 2013

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL LAWRENCE AND EXTREME
SOUTHEASTERN MERCER COUNTIES...

AT 301 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES SOUTHEAST
OF YOUNGSTOWN...MOVING EAST AT 35 MPH.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM.

  LOCATIONS IMPACTED INCLUDE...
  BESSEMER...           NEW CASTLE...         HARLANSBURG...
  MCCONNELLS MILL...

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

LAT...LON 4108 8009 4100 8017 4098 8016 4089 8016
      4095 8053 4110 8053 4111 8052

Special weather statement, Aug 7, 4:08 PM EDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
408 PM EDT WED AUG 7 2013

OHZ039-040-072100-
CARROLL OH-TUSCARAWAS OH-
408 PM EDT WED AUG 7 2013

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN TUSCARAWAS AND WEST
CENTRAL CARROLL COUNTIES...

AT 405 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 8 MILES WEST OF
STRASBURG...MOVING EAST AT 20 MPH.

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

  LOCATIONS IMPACTED INCLUDE...
  STRASBURG...          BOLIVAR...            MINERAL CITY...

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

LAT...LON 4065 8149 4067 8146 4067 8144 4066 8140
      4066 8125 4067 8125 4066 8122 4047 8127
      4058 8167 4064 8167

Special weather statement, Aug 7, 4:13 PM EDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
413 PM EDT WED AUG 7 2013

OHZ069-WVZ004-012-072100-
MARSHALL WV-MONROE OH-WETZEL WV-
413 PM EDT WED AUG 7 2013

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL MONROE...
NORTHWESTERN WETZEL AND SOUTHWESTERN MARSHALL COUNTIES...

AT 410 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES WEST OF NEW
MARTINSVILLE...MOVING EAST AT 15 MPH.

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

  LOCATIONS IMPACTED INCLUDE...
  HANNIBAL...           NEW MARTINSVILLE...   PROCTOR...
  FAIRVIEW...           WILEYVILLE...

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

LAT...LON 3960 8095 3972 8099 3982 8069 3962 8056
      3958 8085 3959 8086 3958 8088 3958 8089

Special weather statement, Aug 7, 4:18 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
418 PM EDT WED AUG 7 2013

PAZ009-015-016-072100-
CLARION PA-FOREST PA-JEFFERSON PA-
418 PM EDT WED AUG 7 2013

...THUNDERSTORMS WILL AFFECT EASTERN CLARION...JEFFERSON AND SOUTH
CENTRAL FOREST COUNTIES...

AT 414 PM EDT...THUNDERSTORMS WERE ALONG A LINE FROM 3 MILES
NORTHWEST OF COOK FOREST STATE PARK TO 3 MILES SOUTHWEST OF
LIMESTONE...MOVING EAST AT 40 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.

  LOCATIONS IMPACTED INCLUDE...
  LIMESTONE...          CLARION...
  COOK FOREST STATE PARK...                   REDCLYFFE...
  SUMMERVILLE...        CLEAR CREEK STATE PARK...
  BROOKVILLE...         REYNOLDSVILLE...      BROCKWAY...

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

LAT...LON 4120 7876 4114 7879 4102 7880 4108 7949
      4143 7936 4143 7906 4141 7909 4135 7908
      4138 7896 4127 7874 4126 7873 4124 7874
      4123 7870 4120 7870

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 2:59 PM EDT	Special Weather Statement	PBZ	Mercer, Venango	61 min
Aug 7, 3:04 PM EDT	Special Weather Statement	PBZ	Lawrence	56 min
Aug 7, 3:42 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	48 min
Aug 7, 4:22 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	38 min
Aug 7, 4:29 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	46 min
Aug 7, 4:49 PM EDT	Special Weather Statement	PBZ	Greene	56 min
Aug 7, 5:01 PM EDT	Special Weather Statement	PBZ	Indiana	44 min
Aug 7, 5:06 PM EDT	Special Weather Statement	PBZ	Indiana	39 min
Aug 7, 5:16 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	44 min
Aug 7, 5:40 PM EDT	Special Weather Statement	PBZ	Fayette	65 min
Aug 7, 5:44 PM EDT	Special Weather Statement	PBZ	Washington	46 min
Aug 7, 5:55 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	50 min
Aug 7, 6:16 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	59 min
Aug 7, 6:23 PM EDT	Areal Flood Advisory	PBZ	Armstrong, Indiana	3 hr
Aug 7, 6:30 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Fayette, Washington, Westmoreland	3 hr
Aug 7, 6:35 PM EDT	Special Weather Statement	PBZ	Fayette	40 min
Aug 7, 4:03 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana	42 min
Aug 7, 4:08 PM EDT	Special Weather Statement	PBZ	Tuscarawas	52 min
Aug 7, 4:38 PM EDT	Special Weather Statement	PBZ	Tuscarawas	52 min
Aug 7, 5:12 PM EDT	Special Weather Statement	PBZ	Harrison	48 min
Aug 7, 5:54 PM EDT	Areal Flood Advisory	PBZ	Harrison, Jefferson	3 hr
Aug 7, 4:13 PM EDT	Special Weather Statement	PBZ	Wetzel	47 min

Nearby

Special Weather Statements in Pennsylvania, 2013 Every special weather statement 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.