Pittsburgh/Western Pa Weather

[meatwad]

Another Freeze Warning

URGENT - WEATHER MESSAGENATIONAL WEATHER SERVICE PITTSBURGH PA143 PM EDT MON MAY 13 2013OHZ041-PAZ013-014-020>022-029-031-073>076-WVZ001>004-012-021>023-140145-/O.NEW.KPBZ.FZ.W.0002.130514T0500Z-130514T1200Z/COLUMBIANA-LAWRENCE-BUTLER-BEAVER-ALLEGHENY-ARMSTRONG-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES-FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON-INCLUDING THE CITIES OF...EAST LIVERPOOL...SALEM...COLUMBIANA...EAST PALESTINE...WELLSVILLE...CALCUTTA...NEW CASTLE...ELLWOOD CITY...BUTLER...ZELIENOPLE...ALIQUIPPA...BEAVER FALLS...AMBRIDGE...MONACA...BEAVER...PITTSBURGH METRO AREA...KITTANNING...FORD CITY...LEECHBURG...FREEPORT...APOLLO...WASHINGTON...CANONSBURG...DONORA...CALIFORNIA...CHARLEROI...MONONGAHELA...MCMURRAY...WAYNESBURG...FAIRDALE...GREENSBURG...NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER...DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN...CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON...OHIOPYLE...MARKLEYSBURG...WEIRTON...BETHANY...WHEELING...MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN...KINGWOOD...TERRA ALTA143 PM EDT MON MAY 13 2013...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM EDT TUESDAY...THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A FREEZEWARNING...WHICH IS IN EFFECT FROM 1 AM TO 8 AM EDT TUESDAY.* TEMPERATURES...IN THE LOWER 30S.* IMPACTS...UNPROTECTED OUTDOOR PLANTS WILL LIKELY BE DAMAGED OR  KILLED.PRECAUTIONARY/PREPAREDNESS ACTIONS...A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT ORHIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHERSENSITIVE VEGETATION.&&$$

[blackngoldrules]

[meatwad]

SEVERE THUNDERSTORM WARNING

OHC081-PAC125-WVC009-069-220130-

/O.NEW.KPBZ.SV.W.0032.130522T0049Z-130522T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED

SEVERE THUNDERSTORM WARNING

NATIONAL WEATHER SERVICE PITTSBURGH PA

849 PM EDT TUE MAY 21 2013

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

SOUTHEASTERN JEFFERSON COUNTY IN EAST CENTRAL OHIO...

NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST PENNSYLVANIA...

NORTHERN OHIO COUNTY IN NORTHERN WEST VIRGINIA...

BROOKE COUNTY IN NORTHERN WEST VIRGINIA...

* UNTIL 930 PM EDT

* AT 848 PM EDT...A SEVERE THUNDERSTORM WAS DETECTED NEAR WINDSOR

HEIGHTS...AND WAS MOVING NORTHEAST AT 20 MPH. THIS STORM IS CAPABLE

OF PRODUCING HAIL UP TO THE SIZE OF QUARTERS AND DAMAGING WINDS IN

EXCESS OF 60 MPH.

* LOCATIONS IMPACTED INCLUDE...

WINDSOR HEIGHTS... RAYLAND... TILTONSVILLE...

CLEARVIEW... WEST LIBERTY... BRILLIANT...

WELLSBURG... BETHANY... FRANKLIN...

AVELLA... BURGETTSTOWN... ENTERPRISE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE FOR DAMAGING WIND...LARGE HAIL AND FREQUENT LIGHTNING. MOVE

INTO A STURDY BUILDING AND AVOID WINDOWS.

PLEASE REPORT SEVERE WEATHER BY CALLING...412-262-1988...POSTING TO

THE NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER @NWSPITTSBURGH.

&&

LAT...LON 4044 8032 4021 8019 4010 8066 4023 8075

TIME...MOT...LOC 0049Z 246DEG 19KT 4019 8065

$$

07

Special Weather Statement

SPECIAL WEATHER STATEMENT

NATIONAL WEATHER SERVICE PITTSBURGH PA

836 PM EDT TUE MAY 21 2013

OHZ049-050-059-PAZ029-WVZ002-003-220115-

BELMONT OH-BROOKE WV-HARRISON OH-JEFFERSON OH-OHIO WV-WASHINGTON PA-

836 PM EDT TUE MAY 21 2013

...A STRONG THUNDERSTORM WILL AFFECT BROOKE...NORTHEASTERN BELMONT...

NORTHERN OHIO...SOUTHEASTERN HARRISON...SOUTHERN JEFFERSON AND WEST

CENTRAL WASHINGTON COUNTIES...

AT 831 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH

SHOWED A STRONG THUNDERSTORM LOCATED 3 MILES WEST OF

YORKVILLE...MOVING EAST AT 25 MPH.

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

STORM.

LOCATIONS IMPACTED INCLUDE...

WHEELING... MARTINS FERRY... DILLONVALE...

BRIDGEPORT... ADENA... JUG RUN...

WARWOOD... YORKVILLE... TILTONSVILLE...

CLEARVIEW... RAYLAND... WINDSOR HEIGHTS...

HIGHWAYS IMPACTED INCLUDE...

I-470 IN OHIO BETWEEN MILE MARKERS 0 AND 3.

I-70 IN WEST VIRGINIA BETWEEN MILE MARKERS 0 AND 2.

I-70 IN PENNSYLVANIA BETWEEN MILE MARKERS 2 AND 19.

I-70 IN OHIO BETWEEN MILE MARKERS 220 AND 225.

I-79 IN PENNSYLVANIA BETWEEN MILE MARKERS 38 AND 39.

PLEASE REPORT SIGNIFICANT WEATHER BY CALLING...412-262-1988...POSTING

TO THE NWS PITTSBURGH FACEBOOK PAGE...OR USING TWITTER

@NWSPITTSBURGH.

LAT...LON 4040 8031 4017 8020 4004 8084 4021 8092

$$

[north pgh]

http://www.spc.noaa.gov/products/md/md0769.html

[meatwad]

Severe Thunderstorm Watch

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 211

NWS STORM PREDICTION CENTER NORMAN OK

230 PM EDT WED MAY 22 2013

SEVERE THUNDERSTORM WATCH 211 IS IN EFFECT UNTIL 1000 PM EDT

FOR THE FOLLOWING LOCATIONS

PAC003-005-007-019-021-023-031-033-039-047-049-051-053-059-063-

065-073-083-085-105-111-117-121-123-125-129-230200-

/O.NEW.KWNS.SV.A.0211.130522T1830Z-130523T0200Z/

PA

. PENNSYLVANIA COUNTIES INCLUDED ARE

ALLEGHENY ARMSTRONG BEAVER

BUTLER CAMBRIA CAMERON

CLARION CLEARFIELD CRAWFORD

ELK ERIE FAYETTE

FOREST GREENE INDIANA

JEFFERSON LAWRENCE MCKEAN

MERCER POTTER SOMERSET

TIOGA VENANGO WARREN

WASHINGTON WESTMORELAND

$$

[Mailman]

Small hail in Uniontown.  Know there's a few trees down in Fayette County, also.

[CoraopolisWx]

Getting cool outside quick.

 

Although it looks like a very comfortable holiday weekend.

[meatwad]

URGENT - WEATHER MESSAGE

NATIONAL WEATHER SERVICE PITTSBURGH PA

341 AM EDT FRI MAY 24 2013

OHZ039>041-048>050-057>059-068-069-PAZ020-021-029-031-073-075-

WVZ001>004-012-021-022-241545-

/O.NEW.KPBZ.FR.Y.0003.130525T0700Z-130525T1200Z/

TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-

MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-BEAVER-ALLEGHENY-

WASHINGTON-GREENE-WESTMORELAND-FAYETTE-HANCOCK-BROOKE-OHIO-

MARSHALL-WETZEL-MARION-MONONGALIA-

INCLUDING THE CITIES OF...NEW PHILADELPHIA...DOVER...

UHRICHSVILLE...CARROLLTON...EAST LIVERPOOL...SALEM...COLUMBIANA...

EAST PALESTINE...WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...

HOPEDALE...STEUBENVILLE...ZANESVILLE...CAMBRIDGE...

MARTINS FERRY...ST. CLAIRSVILLE...BELLAIRE...BARNESVILLE...

SHADYSIDE...BRIDGEPORT...CALDWELL...WOODSFIELD...ALIQUIPPA...

BEAVER FALLS...AMBRIDGE...MONACA...BEAVER...

PITTSBURGH METRO AREA...WASHINGTON...CANONSBURG...DONORA...

CALIFORNIA...CHARLEROI...MONONGAHELA...MCMURRAY...WAYNESBURG...

FAIRDALE...GREENSBURG...NEW KENSINGTON...JEANNETTE...LATROBE...

MONESSEN...UNIONTOWN...CONNELLSVILLE...POINT MARION...WEIRTON...

BETHANY...WHEELING...MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...

MORGANTOWN

341 AM EDT FRI MAY 24 2013

...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EDT SATURDAY...

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A FROST

ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM EDT SATURDAY.

* TEMPERATURES...32 TO 35.

* IMPACTS...SENSITIVE PLANTS MAY BE DAMAGED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE.

&&

$$

15

[blackngoldrules]

46 out right now and very windy. Feels like November.

[airsci]

PUBLIC INFORMATION STATEMENT

NATIONAL WEATHER SERVICE PITTSBURGH PA

520 PM EDT FRI MAY 24 2013

...MORE RECORD CHILL POSSIBLE FOR MEMORIAL DAY WEEKEND...

THE HOLIDAY WEEKEND IS OFF TO A RECORD COLD START. THE HIGH

FRIDAY WAS JUST 51, A RECORD COLD HIGH TEMPERATURE FOR THE DATE.

THE RECORD WAS 52 SET IN 1877.

THE UNSEASONABLY COLD WEATHER WILL CONTINUE THIS WEEKEND. THE

FORECAST FOR PITTSBURGH...

TONIGHT LOW 34. THE RECORD IS 33 FROM 1925.

SATURDAY HIGH 63.

SATURDAY NIGHT LOW 36. THE RECORD IS 34 FROM 1969.

SUNDAY HIGH 67.

SUNDAY NIGHT LOW 42.

MONDAY HIGH 72.

THE NORMAL HIGH IS 73 AND NORMAL LOW 52.

THIS IS IN STARK CONTRAST TO LAST YEAR WHEN TEMPERATURES WERE

30 TO 35 DEGREES WARMER ON MEMORIAL DAY WEEKEND. HIGHS WERE IN

THE UPPER 80S TO LOWER 90S AND LOWS WERE IN THE 60S.

ADDITIONALLY, A SIGNIFICANT RECORD WOULD BE BROKEN IF THE

TEMPERATURE DROPS TO 32 OR LOWER TONIGHT OR 33 OR LOWER SATURDAY

NIGHT. EITHER OF THESE WOULD BECOME THE COLDEST TEMPERATURE EVER

RECORDED IN PITTSBURGH SO LATE IN THE SPRING SEASON. CURRENTLY,

THE LATEST OCCURRENCE OF 32 OR LOWER IS MAY 24 FROM 1963. THE

LATEST OCCURRENCE OF 33 OR LOWER IS MAY 25 FROM 1972.

TEMPERATURE RECORDS FOR PITTSBURGH DATE BACK TO 1871.

[meatwad]

   SPC AC 271717   DAY 2 CONVECTIVE OUTLOOK     NWS STORM PREDICTION CENTER NORMAN OK   1217 PM CDT MON MAY 27 2013   VALID 281200Z - 291200Z   ...THERE IS A SLGT RISK OF SVR TSTMS FROM THE HIGH PLAINS TO THE OH   VALLEY...   ...CENTRAL/SOUTHERN PLAINS...   SUBSTANTIAL TROUGHING IS EXPECTED TO DEVELOP ACROSS THE SWRN U.S.   OVER THE NEXT FEW DAYS WITH A LEAD SHORT-WAVE EXPECTED TO DIG INTO   THE 4-CORNERS BY 29/00Z.  AHEAD OF THIS FEATURE DIFFLUENT SWLY FLOW   ALOFT WILL DEVELOP ACROSS THE HIGH PLAINS.  THIS WILL REINFORCE THE   SFC LEE TROUGH OVER THE HIGH PLAINS AND ENCOURAGE SFC LEE CYCLONE   OVER SERN CO BY LATE AFTERNOON.  WITH SUBSTANTIAL HEIGHT FALLS   UPSTREAM IT APPEARS DRYLINE WILL HOLD ACROSS THE NWRN TX PANHANDLE   INTO EXTREME SERN CO.   LATEST MODEL GUIDANCE DOES NOT SUGGEST ANY IDENTIFIABLE DISTURBANCES   WILL AFFECT THE DRYLINE DURING THE AFTERNOON HOURS...HOWEVER WEAK   HEIGHT FALLS AND STRONG BOUNDARY LAYER HEATING ACROSS THE HIGH   PLAINS SUGGEST CONVECTION WILL EVOLVE SHORTLY AFTER 21Z.  WHILE   FORECAST WIND PROFILES ARE NOT EXPECTED TO BE PARTICULARLY STRONG   FOR LATE SPRING...SFC-6KM BULK SHEAR IS EXPECTED TO BE ON THE ORDER   OF 40KT ACROSS KS AND ROUGHLY 35KT INTO THE ERN TX PANHANDLE.  THIS   WILL BE MORE THAN ADEQUATE FOR DEVELOPMENT/MAINTENANCE OF   SUPERCELLS.  STEEP LAPSE RATES AND SBCAPE IN EXCESS OF 3000 J/KG   SHOULD SUPPORT VERY LARGE HAIL AND ISOLATED TORNADOES CAN ALSO BE   EXPECTED.  WITH LLJ EXPECTED TO INCREASE MARKEDLY AFTER DARK FROM   WRN OK INTO SWRN KS THESE STORMS SHOULD LINGER WELL INTO THE   OVERNIGHT HOURS AS POTENTIAL CLUSTERING ALLOWS FOR COMPLEX OF STORMS   TO PROPAGATE TOWARD CNTRL KS.   FARTHER NORTH...ANOTHER REGION WHERE SCT-NUMEROUS THUNDERSTORMS ARE   EXPECTED TO EVOLVE IS ACROSS THE NEB PANHANDLE INTO THE SRN BLACK   HILLS.  HEATING WILL ALSO PROVE INSTRUMENTAL IN THIS DEVELOPMENT   WITHIN ESELY UPSLOPE REGIME.  ALTHOUGH INSTABILITY MAY BE LESS THAN   REGIONS ACROSS KS IT APPEARS AN MCS COULD EASILY EVOLVE DURING THE   EVENING HOURS.  LARGE HAIL AND ISOLATED TORNADOES ARE EXPECTED WITH   THIS ACTIVITY...THOUGH TORNADO THREAT WILL LESSON CONSIDERABLY AS   DISCRETE STRUCTURES EVOLVE INTO MCS AFTER DARK.   ...MID MS/OH VALLEY REGION...SRN GREAT LAKES...   BOTH THE NAM AND GFS SUGGEST MID LEVEL SHORT-WAVE TROUGH AXIS WILL   BE LOCATED OVER CNTRL IA AT 28/12Z.  THIS FEATURE IS EXPECTED TO   LIFT NEWD INTO WI BY EVENING WITH PRIMARY LARGE SCALE FORCING   EXPECTED TO SPREAD INTO THE UPPER GREAT LAKES REGION.  VEERED LLJ   WILL BE MAINTAINED THROUGH THE PERIOD WHICH SHOULD ALLOW MUCH OF THE   OH VALLEY TO WARM SUBSTANTIALLY DURING THE DAY AS WARM FRONT LIFTS   NWD ACROSS SRN WI/LOWER MI.  SCT CONVECTION WILL LIKELY BE ONGOING   AT THE BEGINNING OF THE PERIOD IN ASSOCIATION WITH NWD LIFTING WARM   FRONT BUT THE PRIMARY SEVERE THREAT SHOULD OCCUR LATER IN THE DAY AS   BOUNDARY LAYER WARMS/DEEPENS.  MODEST WSWLY FLOW WILL BE MORE THAN   ADEQUATE TO SUPPORT ORGANIZED MULTI-CELL CLUSTERS AND PERHAPS EVEN A   FEW SUPERCELLS.  HAVE EXTENDED 15 PERCENT SEVERE PROBS DOWNSTREAM   INTO WRN PA TO ACCOUNT FOR EWD EXPANSION OF UPSTREAM CONVECTION DUE   TO DEEP WLY COMPONENT.  MODEST LAPSE RATES AND SBCAPE ON THE ORDER   OF 1500 J/KG SHOULD SUPPORT HAIL/WIND THREAT WITH DIURNALLY ENHANCED   UPDRAFTS.   ..DARROW.. 05/27/2013   CLICK TO GET WUUS02 PTSDY2 PRODUCT   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0600Z   CURRENT UTC TIME: 1826Z (2:26PM), RELOAD THIS PAGE TO UPDATE THE TIME

[CoraopolisWx]

Dry begets dry.

Hopefully we get some much needed rain, overnight into Sunday morning.

[north pgh]

Dry begets dry.

Hopefully we get some much needed rain, overnight into Sunday morning.

Looks like it ain't happening.

[CoraopolisWx]

Looks like it ain't happening.

Yeah, guess we'll see what late week brings.

[north pgh]

Much needed rain is coming. Of course....I am playing golf on Friday. Let's hope we can move it East quickly after tomorrow.

[Mailman]

What's everyone's thoughts for tomorrow night?  Sounds like it might be pretty eventful.

[north pgh]

What's everyone's thoughts for tomorrow night?  Sounds like it might be pretty eventful.

Should be an interesting day. I am guessing that later in the day and more chance West in Ohio.

[north pgh]

Looking more and more like we will definitely have Severe weather tomorrow and tomorrow night.

 

 

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/...
A WRMFNT WL LIFT NWD TWD THE RGN WED. EXP TSTMS TO DVLP INVOF THE
FNT...ESP IN THE AFTN. IMPRESSIVE SHEAR AND INSTAB IS EXPD TO
DVLP...WITH CAPES 2000-3000 EXPD ESP FM PIT SWD FM LT AFTN INTO
EVE. DAMAGING WINDS AND LARGE HAIL ARE EXPD TO BE THE MAIN
THREATS. CAN NOT RULE OUT AN ISOLD TORNADO THREAT AS WELL WITH
DECENT HODOGRAPHS. THINK SVR THREAT EXISTS FOR THE ENTIRE
AREA...BUT THE BEST CHC WED AFTN/EVE APPEARS TO BE S OF I 80. EXP
CNVCTN AND SVR THREAT TO CONT WED OVRNGT WITH IMPRESSIVE SHEAR
CONTG. SHALLOW INVERSION DVLPS BUT PLENTY OF ELEVATED INSTAB TO
SPPRT TSTMS. WL BE IMPORTANT TO MONITOR LATEST FCSTS...AS THE
POSITION OF THE WRMFNT WL BE CRITICAL AS TO WHERE THE GREATEST SVR
THREAT WL BE. IF TRAINING OCCURS A LOCALIZED FLASH FLOOD THREAT WL
ALSO BE PSBL WED NGT.

EXP A SFC LOW AND CDFNT TO CROSS THE RGN THU MRNG...WITH
SHWRS/TSTMS GRDLY DMNSHG THRU THE DAY. AN UPR LVL TROF SWINGS THU
NGT BEFORE SFC HIGH PRES BLDS IN FOR FRI. TEMPS WL START OUT ABV
AVG...DROPPING TO BLO SEASONAL AVGS AFT FROPA.

[Eskimo Joe]

Pittsburgh Metro looks primed for some action tomorrow.  But then again that's par for the course in the burgh.

[meatwad]

.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/...
BY DAYBREAK WED...THE AFOREMENTIONED DISTURBANCE WL BE WELL EAST
OF THE REGION. HOWEVER...A WRMFNT WL LIFT NWD TWD THE RGN WED AS
ANOTHER SHRTWV APPRCHES UPSTREAM. EXP TSTMS TO DVLP INVOF...AND
SOUTH OF THE STALLING FNT AS THE DAY PROGRESSES. GIVEN NW FLOW
ALOFT...IMPRESSIVE SHEAR AND INSTAB ARE ANTICIPATED WITH CAPES
2000-3000 EXPD ESP FM PIT SWD FM LT AFTN INTO EVE.

DAMAGING WIND AND LARGE HAIL ARE EXPD TO BE THE MAIN THREATS. CAN
NOT RULE OUT AN ISOLD TORNADO THREAT AS WELL WITH BACKED SFC WIND
RESULTING IN DECENT HODOGRAPHS.

FOR WED NGT...SHALLOW INVERSION IS FORECAST TO DVLP...BUT PLENTY OF
ELEVATED INSTAB IS INDICATED TO SPPRT TSTMS IN THE HIGH-SHEAR
ENVIRONMENT. THE POSITION OF THE FNT WL BE CRITICAL AS DEEPENING
LOW PRES/MESOSCALE CONVECTIVE VORTICITY? IS PROGGED TO MOVE
RAPIDLY ALNG THE BNDRY. A SEVERE THREAT WOULD ACCOMPANY THAT
FEATURE...AS WOULD LOCALIZED FLASH FLOODING...MOST ESPECIALLY FOR
URBAN AREAS

SHWRS AND TSTMS WL DMNSH FOLLOWING PASSAGE OF THAT SYSTEM ON THU
MRNG AND HIGH PRES IS FORECAST FOR FRIDAY.

[meatwad]

FLOOD WATCH

NATIONAL WEATHER SERVICE PITTSBURGH PA

410 AM EDT WED JUN 12 2013

OHZ039>041-048>050-PAZ007>009-013>016-020>023-029-073-074-

WVZ001>003-122015-

/O.NEW.KPBZ.FF.A.0001.130613T0200Z-130613T2200Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-

MERCER-VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-

ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-

WESTMORELAND RIDGES-HANCOCK-BROOKE-OHIO-

INCLUDING THE CITIES OF...NEW PHILADELPHIA...DOVER...

UHRICHSVILLE...CARROLLTON...EAST LIVERPOOL...SALEM...COLUMBIANA...

EAST PALESTINE...WELLSVILLE...CALCUTTA...COSHOCTON...CADIZ...

HOPEDALE...STEUBENVILLE...SHARON...HERMITAGE...GROVE CITY...

GREENVILLE...FARRELL...OIL CITY...FRANKLIN...SUGARCREEK...

TIONESTA...NEW CASTLE...ELLWOOD CITY...BUTLER...ZELIENOPLE...

CLARION...PUNXSUTAWNEY...BROOKVILLE...REYNOLDSVILLE...BROCKWAY...

ALIQUIPPA...BEAVER FALLS...AMBRIDGE...MONACA...BEAVER...

PITTSBURGH METRO AREA...KITTANNING...FORD CITY...LEECHBURG...

FREEPORT...APOLLO...INDIANA...WASHINGTON...CANONSBURG...DONORA...

CALIFORNIA...CHARLEROI...MONONGAHELA...MCMURRAY...GREENSBURG...

NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER...

DONEGAL...NEW FLORENCE...ACME...CHAMPION...WEIRTON...BETHANY...

WHEELING

410 AM EDT WED JUN 12 2013

...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH THURSDAY

AFTERNOON...

THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF EAST CENTRAL OHIO...

PENNSYLVANIA AND NORTHERN PANHANDLE OF WEST VIRGINIA...

INCLUDING THE FOLLOWING AREAS...IN EAST CENTRAL OHIO...

CARROLL...COLUMBIANA...COSHOCTON...HARRISON...JEFFERSON OH AND

TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY...ARMSTRONG...BEAVER...

BUTLER...CLARION...FOREST...INDIANA...JEFFERSON PA...

LAWRENCE...MERCER...VENANGO...WASHINGTON...WESTMORELAND AND

WESTMORELAND RIDGES. IN NORTHERN PANHANDLE OF WEST VIRGINIA...

BROOKE...HANCOCK AND OHIO.

* FROM THIS EVENING THROUGH THURSDAY AFTERNOON

* START OF RAINFALL: SCATTERED SHOWERS AND THUNDERSTORMS WILL

DEVELOP THIS AFTERNOON AND INCREASE IN COVERAGE BY EVENING.

* HEAVIEST RAINFALL: SEVERAL ROUNDS OF HEAVY RAINFALL WITH

THUNDERSTORMS ARE LIKELY BETWEEN 2 AM AND NOON ON THURSDAY IN

OHIO...AND BETWEEN 5 AM AND 3 PM IN THE REST OF THE AREA.

* END OF RAINFALL: THE HEAVIEST RAINFALL WITH THUNDERSTORMS SHOULD

MOVE INTO CENTRAL PENNSYLVANIA BY 6 PM THURSDAY.

* AMOUNT OF RAINFALL: WIDESPREAD AMOUNTS OF 1 TO 2 INCHES.

PARTICULARLY ALONG I-80...SOME AREAS THAT EXPERIENCE MULTIIPLE

ROUNDS OF THUNDERSTORMS MAY EXCEED 3 INCHES OF RAINFALL.

* IMPACTS: FLASH FLOODING WILL BE MOST LIKELY IN URBAN AREAS AND

NEAR SMALL STREAMS AND CREEKS. THOSE IN PARTICULARLY VULNERABLE

AREAS WITH POOR DRAINAGE SHOULD PAY CLOSE ATTENTION TO NATIONAL

WEATHER SERVICE PRODUCTS THROUGH THURSDAY AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD

TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION

SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

[north pgh]

I hate Pittsburgh Local news anymore. Armageddon tonight as thunderstorms move in. Good grief.

[Mailman]

 

MESOSCALE DISCUSSION 1046
   NWS STORM PREDICTION CENTER NORMAN OK
   0511 PM CDT WED JUN 12 2013

   AREAS AFFECTED...OH...SW PA...NRN WV...WRN MD...NRN VA

   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

   VALID 122211Z - 122345Z

   PROBABILITY OF WATCH ISSUANCE...80 PERCENT

   SUMMARY...A SEVERE THREAT IS LIKELY TO DEVELOP ACROSS ERN AND CNTRL
   OH EXTENDING SEWD ACROSS SW PA AND NRN WV. A THREAT FOR A FEW
   TORNADOES...WIND DAMAGE AND HAIL WILL BE LIKELY AS A CLUSTER OF
   STORMS ORGANIZES OVER THE NEXT FEW HOURS. WW ISSUANCE WILL LIKELY BE
   NECESSARY DURING THE NEXT HOUR.

   DISCUSSION...SFC ANALYSIS CURRENTLY SHOWS A FRONTAL BOUNDARY
   EXTENDING ESEWD FROM LOWER MI INTO NERN OH WITH DEWPOINTS SOUTH OF
   THE BOUNDARY IN THE UPPER 60S AND LOWER 70S F. THE MOIST BOUNDARY
   LAYER COMBINED WITH TEMPS IN THE 80S F HAS RESULTED IN A STRONGLY
   UNSTABLE AIRMASS WHERE OBJECTIVE ANALYSIS SHOWS MLCAPE VALUES OF
   3000 TO 4000 J/KG. CELLS ARE CURRENTLY INITIATING ALONG THE
   INSTABILITY GRADIENT IN NCNTRL OH. THE SHORT-TERM MODELS STRENGTHEN
   AND MOVE THIS THUNDERSTORM ACTIVITY SEWD INTO SW PA THIS EVENING.
   THE STRONG INSTABILITY COMBINED WITH 0-6 KM SHEAR VALUES IN THE 50
   TO 60 KT RANGE SHOULD SUPPORT AN ORGANIZED CLUSTER OF SEVERE STORMS.
   WIND DAMAGE WILL BE LIKELY AS THE STORMS GROW UPSCALE...POSSIBLY
   DEVELOPING INTO A BOWING LINE SEGMENT. AN ISOLATED TORNADO THREAT
   WILL ALSO DEVELOP EARLY THIS EVENING AS LOW-LEVEL FLOW STRENGTHENS.
   HAIL WILL ALSO BE LIKELY WITH THE MORE INTENSE CORES.

   ..BROYLES/HART.. 06/12/2013

 

[meatwad]

SEL1   URGENT - IMMEDIATE BROADCAST REQUESTED   TORNADO WATCH NUMBER 301   NWS STORM PREDICTION CENTER NORMAN OK   630 PM EDT WED JUN 12 2013   THE NWS STORM PREDICTION CENTER HAS ISSUED A   * TORNADO WATCH FOR PORTIONS OF      WESTERN MARYLAND     CENTRAL AND EASTERN OHIO     SOUTHWEST PENNSYLVANIA     NORTHERN WEST VIRGINIA   * EFFECTIVE THIS WEDNESDAY NIGHT FROM 630 PM UNTIL MIDNIGHT EDT.   * PRIMARY THREATS INCLUDE...     SEVERAL TORNADOES WITH A FEW INTENSE TORNADOES POSSIBLE     SEVERAL SIGNIFICANT DAMAGING WIND GUSTS TO 80 MPH POSSIBLE     SEVERAL VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE   MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST SOUTHWEST OF   MANSFIELD OHIO TO 25 MILES EAST OF MORGANTOWN WEST VIRGINIA.  FOR   A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH   OUTLINE UPDATE (WOUS64 KWNS WOU1).   PRECAUTIONARY/PREPAREDNESS ACTIONS...   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR   TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS   AND POSSIBLE WARNINGS.   &&   OTHER WATCH INFORMATION...CONTINUE...WW 298...WW 299...WW 300...   DISCUSSION...THUNDERSTORMS ARE INTENSIFYING OVER CENTRAL OH ALONG A   WEAK WARM FRONT.  THESE STORMS MAY BECOME DISCRETE SUPERCELLS   CAPABLE OF LARGE HAIL..DAMAGING WINDS...AND ISOLATED TORNADOES   THROUGH THE EVENING.  21Z ILN SOUNDING VERIFIED VERY STRONG   INSTABILITY AND SHEAR PARAMETERS ARE IN PLACE...AND WILL ONLY   STRENGTHEN AS THE LOW LEVEL JET INTENSIFIES THIS EVENING.   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO   500. MEAN STORM MOTION VECTOR 28035.   ...HART

[weatherman5416]

That's pretty strong wording for this area in the watch...

[north pgh]

A nice detailed AFD.

Looks like a stormy overnight.

 

NATIONAL WEATHER SERVICE PITTSBURGH PA
932 PM EDT WED JUN 12 2013

.SYNOPSIS...
LOW PRESSURE WILL MOVE ACROSS THE GREAT LAKES AND OHIO VALLEY
REGION THROUGH THURSDAY...FOLLOWED BY BUILDING HIGH PRESSURE LATE
FRIDAY AND SATURDAY.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
THE 00Z KPBZ SOUNDING INDICATED FAIRLY STRONG VEERING IN THE
LOWEST 3 KM OF THE ATMOSPHERE WITH 0-3 KM HELICITY VALUES
APPROACHING 300 M2/S2. GIVEN FAIRLY STRONG LAPSE RATES FROM THE
SURFACE UP TO ROUGHLY 500 MB AND STRONG SPEED SHEAR EVEN ABOVE THE
LAYER WITH STRONG VEERING...A MULTITUDE OF THREATS CONTINUE TO BE
POSSIBLE OVER THE AREA THIS EVENING WITH TORNADOES...DAMAGING
WIND...AND LARGE HAIL ALL BEING VERY REAL THREATS ACROSS THE
SOUTHERN TWO-THIRDS OF THE AREA.

SADLY...HIGH RESOLUTION AND GLOBAL MODELS SUGGEST WE ARE FAR FROM
EVEN IN THE BEST LARGE SCALE PLACEMENT YET FOR DEVELOPMENT. THE
BEST MOMENTUM ALOFT AND AT 850 MB HAS YET TO REACH THE AREA...AND
IS UNLIKELY TO DO IT FOR SEVERAL MORE HOURS. THIS MEANS THE WORST
IS UNLIKELY EVEN AFFECTING THE AREA AT THIS POINT.

WITH ALL THAT SAID...THE REGIONAL RADAR MOSAIC INDICATES
SUPERCELLULAR DEVELOPMENT IS COMMON FROM EASTERN OHIO ALL THE WAY
BACK TOWARD NORTHERN ILLINOIS ALONG THE FRONTAL BOUNDARY THAT IS
BASICALLY QUASI-STATIONARY ACROSS THE AREA. AS THE LOW LEVEL JET
STRENGTHENS OVERNIGHT AND ENCROACHES ON THE AREA...THIS FRONT IS
LIKELY TO START TO SLOWLY LIFT NORTHWARD...AS CONVECTIVE ACTIVITY
NOW OVER NORTHERN ILLINOIS AND SOUTHERN WISCONSIN CONTINUES DOWN
THE FRONTAL BOUNDARY.

WATER VAPOR IMAGERY REALLY SHEDS A LOT OF LIGHT ONTO THE ONGOING
UPSTREAM SITUATION IN TERMS OF WHY DEVELOPMENT IS SO PERSISTENT
AND STRONG FOR SUCH A LONG TIME. A VERY DEEP TROPOPAUSE FOLD IS
EVIDENT FROM SOUTHEASTERN SOUTH DAKOTA TOWARD CENTRAL ILLINOIS AT
THE MOMENT...WITH MODEL PROJECTIONS AND WATER VAPOR IMAGERY
SUGGESTING THIS EXTENDS DOWN BELOW 700 MB AT THE MOMENT. AS THE
OVERNIGHT CONTINUES...THIS FOLD IS SET TO TRACK EASTWARD WITH
SIMILAR DEPTH INTO WESTERN PENNSYLVANIA. THIS WILL WORK TO
CONTINUOUSLY FEED MID-LEVEL DRY AIR INTO THE CONVECTIVE
DEVELOPMENT ALONG THE FRONT GIVEN WESTERLY AND WEST-SOUTHWESTERLY
FLOW AT 700 MB. WITH WEAK LOW LEVEL INVERSIONS LIKELY TO DEVELOP
BASED UPON SOUNDINGS OVERNIGHT...STRONG MID-LEVEL DRY
INTRUSION...AND A CONTINUATION OF STRONG LAPSE RATES ABOVE
BASICALLY THE LOWEST 1000-2000 FEET OF THE ATMOSPHERE...THERE IS
LITTLE DOUBT CONVECTIVE DEVELOPMENT SHOULD BE ABLE TO SCREAM
DOWNSTREAM INTO THE AREA TONIGHT. THAT SAID...THE CONTINUATION OF
A LARGE HAIL AND DAMAGING WIND/DOWNBURST THREAT SEEMS QUITE
REASONABLE RIGHT THROUGH MORNING ALL THE WHILE THE FLOODING THREAT
GETS PROGRESSIVELY HIGHER DUE TO CONVECTIVE TRAINING. POPS WERE
KEPT CATEGORICAL ALL NIGHT...AND DAMAGING WINDS/LARGE HAIL/HEAVY
RAIN WERE ADDED TO THE GRID FOR THE ENTIRETY OF THE NIGHT. FRIES

&&

[meatwad]

URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 302

NWS STORM PREDICTION CENTER NORMAN OK

1150 PM EDT WED JUN 12 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

SOUTHEAST INDIANA

EXTREME NORTHEAST KENTUCKY

WESTERN MARYLAND

MUCH OF OHIO

SOUTHWEST PENNSYLVANIA

CENTRAL AND NORTHERN WEST VIRGINIA

LAKE ERIE

* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1150

PM UNTIL 600 AM EDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

* PRIMARY THREATS INCLUDE...

NUMEROUS SIGNIFICANT DAMAGING WIND GUSTS TO 80 MPH LIKELY

SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

A FEW TORNADOES POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH

SOUTHEAST OF LATROBE PENNSYLVANIA TO 25 MILES WEST OF DAYTON

OHIO. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 300...WW 301...

DISCUSSION...A LARGE BOW ECHO HAS BECOME ESTABLISHED ALONG THE

IND/OH BORDER AND IS RACING EAST-SOUTHEASTWARD AT 45-50 KT. THIS

SYSTEM MAY RESULT IN A CORRIDOR OF WIDESPREAD SIGNIFICANT WIND

DAMAGE /DERECHO/ ACROSS CENTRAL OH OVER THE NEXT SEVERAL HOURS.

SURROUNDING THE CORRIDOR OF GREATEST RISK...SCATTERED SEVERE STORMS

WILL POSE A RISK OF DAMAGING WINDS AND HAIL THROUGH 10Z. AN

ISOLATED TORNADO IS ALSO POSSIBLE ALONG THE LEADING EDGE OF THE

BOW...AS WELL AS ASSOCIATED WITH DISCRETE CELLS AHEAD OF THE SYSTEM.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 28045.

[north pgh]

A strong thunderstorm over my area right now. Mostly just heavy rain and ctg lightning.

[meatwad]

   MESOSCALE DISCUSSION 1218   NWS STORM PREDICTION CENTER NORMAN OK   1122 AM CDT TUE JUN 25 2013   AREAS AFFECTED...PORTIONS NY...VT...PA...NERN OH...EXTREME NRN WV   PANHANDLE.   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE    VALID 251622Z - 251845Z   PROBABILITY OF WATCH ISSUANCE...40 PERCENT   SUMMARY...INITIALLY ISOLATED/DISORGANIZED CONVECTIVE REGIME ACROSS   THIS AREA MAY INTENSIFY AND GROW IN COVERAGE DURING NEXT FEW HOURS   OF DESTABILIZATION.  MAIN CONCERNS WILL BE SPORADIC DAMAGING GUSTS   -- ESPECIALLY ASSOCIATED WITH ANY AGGREGATED COLD POOLS -- AND   ISOLATED/MRGL HAIL.   DISCUSSION...ISOLATED TO WIDELY SCATTERED CONVECTION IS DEVELOPING   IN BROAD ARC OF WEAK TO NONEXISTENT MLCINH EVIDENT FROM CENTRAL NY   SWWD ACROSS NERN THROUGH NWRN PA...WITH COVERAGE EXPECTED TO   INCREASE AS FOREGOING AIR MASS CONTINUES TO DESTABILIZE   DIABATICALLY.  ONE POTENTIAL GENESIS AREA FOR ADDITIONAL CONVECTION   COULD BE LAKE-BREEZE BOUNDARIES...ESPECIALLY COMING OFF LE OVER NERN   OH AND PA.  AS THESE TRENDS CONTINUE AND SHIFT EWD ACROSS HUDSON   VALLEY...CENTRAL-ERN PA AND NERN OH...PRIMARY STORM MODE SHOULD BE   MULTICELLULAR...PERHAPS EVOLVING INTO SMALL BOWS WHERE ANY   PRECIP-LOADING RELATED COLD POOLS CAN DEVELOP FOR   FORWARD-PROPAGATIONAL PURPOSES.  SFC DEW POINTS RANGE FROM MID-60S F   OVER MUCH OF PA TO UPPER 60S AND LOW 70S ON OH AND ERN NY AND   PORTIONS VT...CONTRIBUTING TO PATCHWORK OF MLCAPE VALUES RANGING   FROM 1000-2000 J/KG NEAR SFC MOIST AXES...GIVEN ANOTHER COUPLE HOURS   OF INSOLATION-RELATED WARMING APPLIED TO RAOBS AND MODEL FCST   SOUNDINGS.  WEAK MID-UPPER PERTURBATION MOVING EWD ACROSS ERN   ONT/WRN NY REGION ALSO MAY BE CONTRIBUTING DESTABILIZATION ALOFT VIA   DCVA.    LIMITING FACTORS FOR ORGANIZED SVR POTENTIAL INCLUDE    1. LACK OF ANY OTHER SUBSTANTIAL/SIGNIFICANT LOW-LEVEL BOUNDARIES   FOR FOCI...AT LEAST INITIALLY PRIOR TO ANY COLD-POOL FORMATION...   2. WEAK SFC FLOW...LIMITING CONVERGENCE...AND    3. WEAK DEEP SHEAR ACROSS THIS ENTIRE AREA -- EFFECTIVE SHEAR   MAGNITUDES ONLY 15-25 KT.   ..EDWARDS/KERR.. 06/25/2013   ATTN...WFO...BTV...OKX...ALY...PHI...BGM...BUF...CTP...PBZ...   CLE...

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