north pgh Posted April 11, 2011 Share Posted April 11, 2011 ...SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EVENING... THE NATIONAL WEATHER SERVICE EXPECTS A LINE OF THUNDERSTORMS TO MOVE EASTWARD THROUGH THE UPPER OHIO VALLEY THIS AFTERNOON AND EVENING. SOME STORMS MAY BECOME SEVERE WITH DAMAGING WIND AND LARGE HAIL. THIS LINE OF STRONG TO SEVERE THUNDERSTORMS IS EXPECTED TO AFFECT THE ZANESVILLE OHIO AND FRANKLIN PENNSYLVANIA AREAS BETWEEN 1 PM AND 3 PM...WHEELING WEST VIRGINIA...PITTSBURGH AND DUBOIS PENNSYLVANIA BETWEEN 3 PM AND 5 PM...LATROBE PENNSYLVANIA AND MORGANTOWN WEST VIRGINIA BETWEEN 5 PM AND 7 PM...AND OAKLAND MARYLAND AND PARSONS WEST VIRGINIA BETWEEN 6 PM AND 8 PM. CHECK FOR UPDATES FROM THE NATIONAL WEATHER SERVICE ON THESE POTENTIALLY SEVERE THUNDERSTORMS. REMEMBER...WHEN THUNDERSTORMS THREATEN...SEEK SHELTER IN A STURDY BUILDING. Link to comment Share on other sites More sharing options...
blackngoldrules Posted April 11, 2011 Share Posted April 11, 2011 There's a line of strong thunderstorms entering the area right now. Mainly Greene, Washington, and southern Allegheny counties. Link to comment Share on other sites More sharing options...
blackngoldrules Posted April 11, 2011 Share Posted April 11, 2011 Special Weather Statement SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1248 PM EDT MON APR 11 2011 PAZ021>023-029-073>076-111745- ALLEGHENY PA-ARMSTRONG PA-FAYETTE PA-FAYETTE RIDGES PA-INDIANA PA-WASHINGTON PA-WESTMORELAND PA-WESTMORELAND RIDGES PA- 1248 PM EDT MON APR 11 2011 ...THUNDERSTORMS... THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES... FAYETTE...ARMSTRONG...WASHINGTON...ALLEGHENY...WESTMORELAND... INDIANA...WESTMORELAND RIDGES AND FAYETTE RIDGES... AT 1245 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH INDICATED STRONG THUNDERSTORMS 3 MILES EAST OF BENTLEYVILLE...MOVING NORTHEAST AT 55 MPH. THESE STORMS WILL PRODUCE WIND GUSTS BETWEEN 35 AND 40 MPH AND A BRIEF PERIOD OF VERY HEAVY RAIN. SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE... BROWNSVILLE... BENTLEYVILLE... CALIFORNIA... CHARLEROI... MONONGAHELA... MONESSEN... BELLE VERNON... BALDWIN... JEFFERSON BORO... DONORA... ELIZABETH BORO... PERRYOPOLIS... KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS APPROACH. PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM EDT MONDAY EVENING FOR WESTERN MARYLAND AND NORTHERN WEST VIRGINIA. Link to comment Share on other sites More sharing options...
blackngoldrules Posted April 11, 2011 Share Posted April 11, 2011 I was a little worried that the first line that went through might stabilize things a little too much before the next line moves in a bit later, but the sun is back out and warming things back up a bit, so hopefully that'll juice things back up enough for the next round. The first line that went through just had some thunder but nothing too impressive. We'll see what happens when the actual front gets closer. Link to comment Share on other sites More sharing options...
north pgh Posted April 11, 2011 Share Posted April 11, 2011 I was a little worried that the first line that went through might stabilize things a little too much before the next line moves in a bit later, but the sun is back out and warming things back up a bit, so hopefully that'll juice things back up enough for the next round. The first line that went through just had some thunder but nothing too impressive. We'll see what happens when the actual front gets closer. Radar doesn't look to promising. It looks like the major activity is popping up south of here. Link to comment Share on other sites More sharing options...
blackngoldrules Posted April 11, 2011 Share Posted April 11, 2011 Radar doesn't look to promising. It looks like the major activity is popping up south of here. Yeah, doesn't look to good for any severe weather at this point. Looks like we'll just see some rain moving in. Link to comment Share on other sites More sharing options...
CoraopolisWx Posted April 12, 2011 Share Posted April 12, 2011 This would have been a nice little event 2 months ago. Link to comment Share on other sites More sharing options...
blackngoldrules Posted April 13, 2011 Share Posted April 13, 2011 This would have been a nice little event 2 months ago. Ahhh, it probably would have been a slop storm anyway! I just can't wait for it to be done with. I'm on vacation this week and the weather has been miserable. That's what I get for taking a vacation in April! Link to comment Share on other sites More sharing options...
meatwad Posted April 16, 2011 Share Posted April 16, 2011 URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PITTSBURGH PA 401 PM EDT SAT APR 16 2011 ...WIND ADVISORY SUNDAY DAYTIME... .WINDS CAN GUST OVER 45 MPH DAYTIME SUNDAY AS FAST WINDS ALOFT CAN MIX DOWN TO THE SURFACE. MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-170415- /O.NEW.KPBZ.WI.Y.0008.110417T1200Z-110418T0000Z/ 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- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... 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...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...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 401 PM EDT SAT APR 16 2011 ...WIND ADVISORY IN EFFECT FROM 8 AM TO 8 PM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 8 AM TO 8 PM EDT SUNDAY. * HAZARDS...DAYTIME MIXING WILL HELP BRING FAST WINDS ALOFT DOWN TO THE GROUND. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * TIMING...WIND GUSTS WILL INCREASE DURING THE DAY AS VERTICAL MIXING INCREASES. WINDS WILL SUBSIDE WITH SUNSET. * IMPACTS...POTENTIAL FOR DOWNED TREES... LARGE BRANCHES...AND POWER LINES...MAKING POWER INTERRUPTIONS POSSIBLE. TREES...LINES AND PROPERTY ALREADY WEAKENED FROM SATURDAYS HIGH WINDS WILL BE PARTICULARLY VULNERABLE. CROSS GUSTS AND FLYING DEBRIS MAY HINDER MOTORISTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS GREATER THAN 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. POWER INTERRUPTIONS ARE POSSIBLE. && $$ Link to comment Share on other sites More sharing options...
north pgh Posted April 17, 2011 Share Posted April 17, 2011 I had to drive to Erie this morning and had light snow showers from Meadville to Erie. Link to comment Share on other sites More sharing options...
north pgh Posted April 20, 2011 Share Posted April 20, 2011 Intense ctg lightning just to my Northwest. Link to comment Share on other sites More sharing options...
meatwad Posted April 20, 2011 Share Posted April 20, 2011 thundering here in monroeville Link to comment Share on other sites More sharing options...
meatwad Posted April 20, 2011 Share Posted April 20, 2011 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 816 PM EDT TUE APR 19 2011 PAZ014-021>023-073-200100- ALLEGHENY PA-ARMSTRONG PA-BUTLER PA-INDIANA PA-WESTMORELAND PA- 816 PM EDT TUE APR 19 2011 ...THUNDERSTORMS MOVING THROUGH THE FOLLOWING COUNTIES...ARMSTRONG...ALLEGHENY...WESTMORELAND...INDIANA AND BUTLER... AT 811 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH INDICATED A CLUSTER OF STRONG THUNDERSTORMS NORTHERN AND EASTERN ALLEGHENY COUNTY...MOVING EAST AT 45 MPH. SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE... PERRYSVILLE... MARS... GIBSONIA... FOX CHAPEL... PENN HILLS... RUSSELLTON... SPRINGDALE... NEW KENSINGTON... PLUM... LERNERVILLE... NATRONA HEIGHTS... SARVER... THESE STORMS MAY PRODUCE SMALL HAIL AND HEAVY DOWNPOURS. PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772. PRECAUTIONARY/PREPAREDNESS ACTIONS... INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. && LAT...LON 4083 7929 4032 7935 4050 8006 4070 8006 $$ Link to comment Share on other sites More sharing options...
north pgh Posted April 20, 2011 Share Posted April 20, 2011 Storms just missed me several miles to my north. Hope to get some more overnight. Link to comment Share on other sites More sharing options...
weatherman5416 Posted April 20, 2011 Share Posted April 20, 2011 Just looked at the 7 day from the NWS and there is some light at the end of the tunnel! Next Tuesday: Sunny, high near 83. Link to comment Share on other sites More sharing options...
meatwad Posted April 22, 2011 Share Posted April 22, 2011 FLOOD WATCH NATIONAL WEATHER SERVICE PITTSBURGH PA 255 PM EDT THU APR 21 2011 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016- 020>023-029-031-073>076-WVZ001>004-012-021>023-041-220400- /O.NEW.KPBZ.FF.A.0002.110422T1200Z-110424T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ 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- INCLUDING THE CITIES OF...OAKLAND MD...GRANTSVILLE... 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...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...WAYNESBURG...FAIRDALE...GREENSBURG... NEW KENSINGTON...JEANNETTE...LATROBE...MONESSEN...LIGONIER... DONEGAL...NEW FLORENCE...ACME...CHAMPION...UNIONTOWN... CONNELLSVILLE...POINT MARION...NORMALVILLE...FARMINGTON... OHIOPYLE...MARKLEYSBURG...TORONTO...WEIRTON...WHEELING... MOUNDSVILLE...NEW MARTINSVILLE...FAIRMONT...MORGANTOWN... KINGWOOD...TERRA ALTA...PARSONS...DAVIS...THOMAS 255 PM EDT THU APR 21 2011 ...FLASH FLOOD WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF WESTERN MARYLAND...EAST CENTRAL OHIO...PENNSYLVANIA AND WEST VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN WESTERN MARYLAND...GARRETT. IN EAST CENTRAL OHIO...BELMONT...CARROLL...COLUMBIANA...COSHOCTON... GUERNSEY...HARRISON...JEFFERSON OH...MONROE...MUSKINGUM... NOBLE AND TUSCARAWAS. IN PENNSYLVANIA...ALLEGHENY... ARMSTRONG...BEAVER...BUTLER...CLARION...FAYETTE...FAYETTE RIDGES...FOREST...GREENE...INDIANA...JEFFERSON PA...LAWRENCE... MERCER...VENANGO...WASHINGTON...WESTMORELAND AND WESTMORELAND RIDGES. IN WEST VIRGINIA...BROOKE...HANCOCK...MARION... MARSHALL...MONONGALIA...OHIO...PRESTON...TUCKER AND WETZEL. * FROM FRIDAY MORNING THROUGH SATURDAY EVENING * RAIN...MODERATE TO LOCALLY HEAVY AT TIMES...WILL SPREAD ACROSS THE REGION FRIDAY...PERSISTING THROUGH SATURDAY. RAINFALL OF 1 TO 3 INCHES IS POSSIBLE. * THIS RAIN...IN COMBINATION WITH NEARLY SATURATED GROUND FROM RECENT RAINFALL...WILL CREATE THE POTENTIAL FOR RAPIDLY RISING WATER IN STREAMS AND CREEKS...AS WELL AS IN AREAS OF POOR DRAINAGE. 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. && $$ Link to comment Share on other sites More sharing options...
meatwad Posted April 25, 2011 Share Posted April 25, 2011 DAY 3 CONVECTIVE OUTLOOK RESENT 1 NWS STORM PREDICTION CENTER NORMAN OK 0337 AM CDT SUN APR 24 2011 VALID 261200Z - 271200Z ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS A LARGE PORTION OF THE ERN U.S. FROM THE NORTHEAST SWWD INTO ERN TX/ERN OK... CORRECTED FOR SPC WEB PAGE ...SYNOPSIS... AS ONE FEATURE ALOFT EJECTS NEWD ACROSS THE OH VALLEY INTO THE GREAT LAKES AREA...A SECOND WILL DIG QUICKLY SEWD OUT OF THE ROCKIES AND INTO THE SRN PLAINS -- BOTH WITHIN THE LARGER-SCALE TROUGH WHICH WILL KEEP BROAD CYCLONIC FLOW IN PLACE ACROSS A LARGE PORTION OF THE U.S. THROUGH THE PERIOD. WHILE THE INITIAL SURFACE LOW LIFTS NEWD INTO THE GREAT LAKES AND WEAKENS...LEAVING BEHIND A TRAILING FROM THE OH VALLEY SWWD ACROSS THE MID MS VALLEY INTO TX...A SECOND FRONTAL LOW WILL DEVELOP -- AND QUICKLY DEEPEN -- AS IT SHIFTS ACROSS TX AND INTO AR LATE. THIS DEVELOPING LOW WILL CONTRIBUTE TO A POTENTIALLY SUBSTANTIAL SEVERE WEATHER EVENT ACROSS THE ARKLATEX AND MID MS VALLEY REGION. ...ARKLATEX REGION INTO THE MID MS VALLEY AREA... COMPLEX -- BUT POTENTIALLY SIGNIFICANT -- SCENARIO APPEARS TO BE UNFOLDING ACROSS THIS REGION...AS PERSISTENT WARM ADVECTION INVOF A SURFACE WARM FRONT RESULTS IN A SLOW INCREASE IN STORM COVERAGE AHEAD OF A RAPIDLY-APPROACHING UPPER FEATURE DIGGING SEWD FROM THE ROCKIES INTO THE SRN PLAINS. WHILE SEVERE POTENTIAL IS APPARENT ACROSS PORTIONS OF THE AREA -- PARTICULARLY INVOF THE WARM FRONT -- THROUGH MUCH OF THE PERIOD...THREAT SHOULD RAMP UP RAPIDLY FROM W TO E BY LATE AFTERNOON ACROSS SERN OK/E TX...AND THEN INTO THE EVENING ACROSS THE ARKLATEX INTO NRN LA/AR AND EVENTUALLY THE MID MS VALLEY REGION. FLOW ALOFT IS FORECAST TO INCREASE AS THE UPPER SYSTEM APPROACHES...AND AS BACKING/INCREASING LOW LEVEL FLOW EVOLVES IN RESPONSE...SHEAR WILL BECOME HIGHLY-FAVORABLE FOR SUPERCELLS. IN ADDITION...IT APPEARS THAT LOW-LEVEL SHEAR WILL BECOME QUITE FAVORABLE FOR LOW-LEVEL ROTATION -- AND THUS THE POSSIBILITY OF STRONG TORNADOES...ESPECIALLY OVERNIGHT FOCUSED ON AR AND VICINITY. GIVEN THIS POTENTIAL...UPGRADE TO HIGHER CATEGORY RISK APPEARS LIKELY IN LATER FORECASTS. ...SRN APPALACHIANS WWD ACROSS THE TN VALLEY REGION... PERSISTENT CYCLONIC FLOW ALOFT -- AND THE PASSAGE OF SEVERAL WEAK/EMBEDDED FEATURES -- ATOP A MOIST BOUNDARY LAYER DESTABILIZING THROUGH THE AFTERNOON SHOULD RESULT IN WIDESPREAD THUNDERSTORM DEVELOPMENT ACROSS A LARGE PORTION OF THE SERN U.S. -- FROM VA AND THE CAROLINAS WWD INTO THE TN VALLEY AND SOUTHEAST. WITH MODEST BUT SUFFICIENT FLOW ALOFT ACROSS A BROAD AREA...MULTICELL/LOCAL SUPERCELL ORGANIZATION CAN BE EXPECTED WITH STORMS ACROSS A LARGE PORTION OF THIS REGION. DETAILS REMAIN UNCLEAR ATTM...BUT WILL INCLUDE A LARGE PORTION OF THIS REGION IN SLIGHT RISK FORECAST -- MAINLY FOR DAMAGING WIND AND HAIL POTENTIAL...THOUGH AN ISOLATED TORNADO OR TWO IS ALSO POSSIBLE. ...LOWER GREAT LAKES/OH VALLEY REGION... AS A STRONG SHORT-WAVE TROUGH AND SURFACE WARM FRONT LIFT QUICKLY NEWD ACROSS THE REGION...EXPECT WIDESPREAD SHOWERS AND THUNDERSTORMS EARLY IN THE PERIOD...WHICH SHOULD CONTINUE/REDEVELOP THROUGH THE PERIOD. NARROWING DOWN EXACT AREAS OF SEVERE WEATHER POTENTIAL REMAIN DIFFICULT AT THIS TIME WITH WIDESPREAD AREA OF AT LEAST MARGINAL INSTABILITY AND A BROAD AREA OF STRONG FLOW ALOFT/FAVORABLE SHEAR. DETAILS SHOULD BECOME CLEARER IN LATER FORECASTS...BUT ATTM...WILL INCLUDE A LARGE PORTION OF THE LOWER GREAT LAKES REGION SWWD INTO THE OH VALLEY AREA...WHERE POTENTIAL FOR MULTIPLE EPISODES OF STRONG/OCCASIONALLY SEVERE STORMS APPEARS TO EXIST -- INCLUDING THREATS FOR HAIL...DAMAGING WINDS...AND A COUPLE OF TORNADOES. ..GOSS.. 04/24/2011 CLICK TO GET WUUS03 PTSDY3 PRODUCT NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0730Z CURRENT UTC TIME: 0246Z (10:46PM), RELOAD THIS PAGE TO UPDATE THE TIME Link to comment Share on other sites More sharing options...
blackngoldrules Posted April 25, 2011 Share Posted April 25, 2011 AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 421 AM EDT MON APR 25 2011 .SYNOPSIS... A WARM FRONT HAS PUSHED NORTH OF THE FORECAST AREA TODAY AND AS A RESULT THE DISTRICT WILL BE IN THE WARM SECTOR WITH A CHANCE OF SHOWERS AND ABOVE NORMAL TEMPERATURES THROUGH WEDNESDAY. && .NEAR TERM /THROUGH TONIGHT/... THE WARM FRONT HAS PUSHED INTO NORTHWEST PA AND THE ENTIRE FORECAST AREA WILL BE IN THE WARM SECTOR. IN THE WARM SECTOR SHOWERS WILL BE SCATTERED AND MAINLY DURING THE PERIOD OF MAX HEATING IN THE LATE AFTERNOON AND EVENING HOURS. THERE WILL BE A SLIGHT RISK OF SEVERE STORMS DURING THE LATE AFTERNOON AND EVENING WITH THE PRIMARY SEVERE WEATHER THREAT DAMAGING THUNDERSTORM WINDS. TEMPERATURES WILL REMAIN WELL ABOVE NORMAL. && .SHORT TERM /TUESDAY THROUGH WEDNESDAY/... CENTRAL PLAINS TROUGH IS FORECAST TO DIG TOWARD THE WESTERN GREAT LAKES/UPPER MISSISSIPPI VALLEY REGION AND CUTOFF ON TUESDAY. THAT PATTERN WILL YIELD SPLIT FLOW WITH FAST SOUTHERN STREAM OVER THE UPPER OHIO VALLEY REGION. RESULTING WARMTH AND MOISTURE WILL DESTABILIZE THE ATMOSPHERE WITH MODERATE TO HIGH LEVELS OF SHEAR IN THE RAPID FLOW. AS SHORTWAVES MOVE THROUGH THIS PATTERN, THUNDERSTORMS MAY BE EXPECTED INTO MID WEEK WITH POTENTIAL FOR A SLIGHT RISK OF SEVERE STORMS THROUGH WEDNESDAY. TEMPERATURES WILL REMAIN WELL ABOVE NORMAL. Link to comment Share on other sites More sharing options...
PittWeatherWatch Posted April 25, 2011 Share Posted April 25, 2011 MESOSCALE DISCUSSION 0569 NWS STORM PREDICTION CENTER NORMAN OK 1252 PM CDT MON APR 25 2011 AREAS AFFECTED...ERN OH...MUCH OF PA CONCERNING...SEVERE POTENTIAL...WATCH LIKELY VALID 251752Z - 251915Z SVR WEATHER THREAT IS EXPECTED TO INCREASE ACROSS ERN OH AND MUCH OF PA DURING THE NEXT FEW HOURS. A WW APPEARS LIKELY. MESOANALYSIS AT 17Z INDICATES A STATIONARY FRONT MAY BE RETREATING SLIGHTLY NWD ACROSS ERN OH/CNTRL PA AS WEAK SURFACE LOW PRESSURE OVER FAR ERN IND APPROACHES THE REGION. COOL/CLOUDY CONDITIONS EXIST N OF THE FRONT...WHILE CLEAR SKIES AND STRONG SURFACE HEATING /WITH TEMPERATURES CLIMBING THROUGH THE 70S/ IS OCCURRING S OF THE FRONT. IN ADDITION...DEWPOINTS IN THE IMMEDIATE VICINITY OF THE BOUNDARY RESIDE IN THE 50S TO LOW 60S. THOUGH MIDLEVEL LAPSE RATES ARE NOT PARTICULARLY STEEP...THE STRONG BOUNDARY LAYER DESTABILIZATION WILL AID IN BOOSTING MLCAPE VALUES TO 500-1500 J/KG BY PEAK HEATING. VISIBLE SATELLITE IMAGERY SHOWS CUMULUS DEEPENING AND EXPANDING ALONG AND S OF THE FRONT DURING THE LAST HR OR SO...AND RADAR IMAGERY AND LIGHTNING DATA SHOW ISOLATED THUNDERSTORM INITIATION HAS TAKEN PLACE NE OF PIT. AS ADDITIONAL THUNDERSTORM DEVELOPMENT OCCURS DURING THE REMAINDER OF THE AFTERNOON...SVR WEATHER THREAT MAY BECOME SUFFICIENT FOR WW. VWP DATA INDICATES VERTICAL SHEAR PROFILES ARE SUFFICIENT FOR SUPERCELL DEVELOPMENT...WHICH WILL ENHANCE THE POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS. IN ADDITION...LOW-LEVEL SHEAR WITH 0-1 KM SRH IN EXCESS OF 100 M2 S-2 MAY FAVOR A TORNADO OR TWO. Link to comment Share on other sites More sharing options...
north pgh Posted April 25, 2011 Share Posted April 25, 2011 Beat me by 2 minutes. I was waiting for a warning for the cell in Butler County. It really seemed to strengthen as it moves NE. MESOSCALE DISCUSSION 0569 NWS STORM PREDICTION CENTER NORMAN OK 1252 PM CDT MON APR 25 2011 AREAS AFFECTED...ERN OH...MUCH OF PA CONCERNING...SEVERE POTENTIAL...WATCH LIKELY VALID 251752Z - 251915Z SVR WEATHER THREAT IS EXPECTED TO INCREASE ACROSS ERN OH AND MUCH OF PA DURING THE NEXT FEW HOURS. A WW APPEARS LIKELY. MESOANALYSIS AT 17Z INDICATES A STATIONARY FRONT MAY BE RETREATING SLIGHTLY NWD ACROSS ERN OH/CNTRL PA AS WEAK SURFACE LOW PRESSURE OVER FAR ERN IND APPROACHES THE REGION. COOL/CLOUDY CONDITIONS EXIST N OF THE FRONT...WHILE CLEAR SKIES AND STRONG SURFACE HEATING /WITH TEMPERATURES CLIMBING THROUGH THE 70S/ IS OCCURRING S OF THE FRONT. IN ADDITION...DEWPOINTS IN THE IMMEDIATE VICINITY OF THE BOUNDARY RESIDE IN THE 50S TO LOW 60S. THOUGH MIDLEVEL LAPSE RATES ARE NOT PARTICULARLY STEEP...THE STRONG BOUNDARY LAYER DESTABILIZATION WILL AID IN BOOSTING MLCAPE VALUES TO 500-1500 J/KG BY PEAK HEATING. VISIBLE SATELLITE IMAGERY SHOWS CUMULUS DEEPENING AND EXPANDING ALONG AND S OF THE FRONT DURING THE LAST HR OR SO...AND RADAR IMAGERY AND LIGHTNING DATA SHOW ISOLATED THUNDERSTORM INITIATION HAS TAKEN PLACE NE OF PIT. AS ADDITIONAL THUNDERSTORM DEVELOPMENT OCCURS DURING THE REMAINDER OF THE AFTERNOON...SVR WEATHER THREAT MAY BECOME SUFFICIENT FOR WW. VWP DATA INDICATES VERTICAL SHEAR PROFILES ARE SUFFICIENT FOR SUPERCELL DEVELOPMENT...WHICH WILL ENHANCE THE POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS. IN ADDITION...LOW-LEVEL SHEAR WITH 0-1 KM SRH IN EXCESS OF 100 M2 S-2 MAY FAVOR A TORNADO OR TWO. Link to comment Share on other sites More sharing options...
PittWeatherWatch Posted April 25, 2011 Share Posted April 25, 2011 Beat me by 2 minutes. I was waiting for a warning for the cell in Butler County. It really seemed to strengthen as it moves NE. Yeah I've been watching that one too. Really did blossom into a potent cell. A sign of what's to come? Link to comment Share on other sites More sharing options...
OHSnow Posted April 25, 2011 Share Posted April 25, 2011 Surprised there's no tornado warning for that cell... Wunderground radar is picking up a TVS with it. Link to comment Share on other sites More sharing options...
OHSnow Posted April 25, 2011 Share Posted April 25, 2011 Nice little hook showing up on radar. That bad boy could already be producing a twister, notwithstanding the lack of a warning. Link to comment Share on other sites More sharing options...
PittWeatherWatch Posted April 25, 2011 Share Posted April 25, 2011 TORNADO WARNING PAC005-031-065-251900- /O.NEW.KPBZ.TO.W.0004.110425T1837Z-110425T1900Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 237 PM EDT MON APR 25 2011 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN ARMSTRONG COUNTY IN WEST CENTRAL PENNSYLVANIA... SOUTHWESTERN JEFFERSON COUNTY IN WEST CENTRAL PENNSYLVANIA... SOUTHEASTERN CLARION COUNTY IN WEST CENTRAL PENNSYLVANIA... * UNTIL 300 PM EDT * AT 235 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR NEW BETHLEHEM...MOVING NORTHEAST AT 40 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW BETHLEHEM... DORA... SUMMERVILLE... BROOKVILLE... Link to comment Share on other sites More sharing options...
north pgh Posted April 25, 2011 Share Posted April 25, 2011 Nice little hook showing up on radar. That bad boy could already be producing a twister, notwithstanding the lack of a warning. Hook echo is really showing up now. Watching live on Channel 4. (Observation: Channel 4 radar is much better than Channel 11's) Very flat and rural up that way. I spent a lot of time there in the past. Link to comment Share on other sites More sharing options...
PittWeatherWatch Posted April 25, 2011 Share Posted April 25, 2011 BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 202 NWS STORM PREDICTION CENTER NORMAN OK 245 PM EDT MON APR 25 2011 SEVERE THUNDERSTORM WATCH 202 IS IN EFFECT UNTIL 1000 PM EDT FOR THE FOLLOWING LOCATIONS PA PENNSYLVANIA COUNTIES INCLUDED ARE ALLEGHENY ARMSTRONG BEAVER BEDFORD BLAIR BUTLER CAMBRIA CAMERON CENTRE CLARION CLEARFIELD CLINTON COLUMBIA CRAWFORD ELK FAYETTE FOREST GREENE HUNTINGDON INDIANA JEFFERSON JUNIATA LAWRENCE LYCOMING MCKEAN MERCER MIFFLIN MONTOUR NORTHUMBERLAND POTTER SNYDER SOMERSET SULLIVAN TIOGA UNION VENANGO WARREN WASHINGTON WESTMORELAND ATTN...WFO...PBZ...CTP...CLE... Link to comment Share on other sites More sharing options...
NaoPos Posted April 25, 2011 Share Posted April 25, 2011 Link to comment Share on other sites More sharing options...
OHSnow Posted April 25, 2011 Share Posted April 25, 2011 Looks like all the warnings have been lifted for that cell... Wunderground is still picking up a TVS, though. Link to comment Share on other sites More sharing options...
PittWeatherWatch Posted April 25, 2011 Share Posted April 25, 2011 Sounds like it was a nasty storm. Emergency manager in Coolspring (Jefferson County) reporting trees and power lines down. Also, in Oliveburg: multiple trees down in Barton Chapel Rd area with residential damage of at least 2 homes. Link to comment Share on other sites More sharing options...
Ellinwood Posted April 25, 2011 Share Posted April 25, 2011 Looks like all the warnings have been lifted for that cell... Wunderground is still picking up a TVS, though. Don't trust computer code to tell you what's going on... WUnderground can mess up TVS signatures easily. However, in this case it did an alright job. Link to comment Share on other sites More sharing options...
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