iceman56 Posted May 18, 2011 Share Posted May 18, 2011 Moderate to occasionally heavy rain here in NW Chesco with temp of 67.4 2.12" since Saturday. Looks like some sustained heavier rain this afternoon. Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 Link to comment Share on other sites More sharing options...
NaoPos Posted May 18, 2011 Author Share Posted May 18, 2011 watch issued for parts of MD, DE, VA, WV...SOuth jersey http://www.spc.noaa.gov/products/watch/ Link to comment Share on other sites More sharing options...
Harbourton Posted May 18, 2011 Share Posted May 18, 2011 Drier air is trying to work in from SW. But the moisture feed ahead of it looks pretty juicy. Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 lookout Link to comment Share on other sites More sharing options...
IsentropicLift Posted May 18, 2011 Share Posted May 18, 2011 That band now has 2.0" per hour rates embedded within it offshore. Link to comment Share on other sites More sharing options...
Plokoon111 Posted May 18, 2011 Share Posted May 18, 2011 Wow now that is some really heavy rain that just hit Bensalem. Link to comment Share on other sites More sharing options...
yoda Posted May 18, 2011 Share Posted May 18, 2011 Tornado warning bucks/montgomery counties.... strong rotation per nws Link to comment Share on other sites More sharing options...
IsentropicLift Posted May 18, 2011 Share Posted May 18, 2011 Tornado Warning just northwest of Philly Link to comment Share on other sites More sharing options...
Rtd208 Posted May 18, 2011 Share Posted May 18, 2011 Moderate to heavy rain falling here now. Link to comment Share on other sites More sharing options...
LMolineuxLM1 Posted May 18, 2011 Share Posted May 18, 2011 I have sun right now. Maybe just maybe later then? Or am I wishing for too-to much? Sorry dont mean to rant. Just bare with me. I might get out of work and go chasing somewhere not so sure yet. Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 . Link to comment Share on other sites More sharing options...
greg ralls Posted May 18, 2011 Share Posted May 18, 2011 Looks like the tornado warned cell weakened in the last few minutes. Whew. Link to comment Share on other sites More sharing options...
JCT777 Posted May 18, 2011 Share Posted May 18, 2011 Looks like the tornado warned cell weakened in the last few minutes. Whew. Yup, and it also looks to just miss where I am - on the west side of Lansdale, PA. Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 . Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 yea warning dropped but slow mover Link to comment Share on other sites More sharing options...
Plokoon111 Posted May 18, 2011 Share Posted May 18, 2011 Yikes man if that tornado warning was pushed back just a bit to the south eastern tip of Bucks County I would of be screwed or in the tornado zone. Link to comment Share on other sites More sharing options...
SmokeEater Posted May 18, 2011 Share Posted May 18, 2011 Meso discussion out for the rest of our area, watch possible. MESOSCALE DISCUSSION 0802 NWS STORM PREDICTION CENTER NORMAN OK 0134 PM CDT WED MAY 18 2011 AREAS AFFECTED...PARTS OF ERN PA AND CENTRAL/NRN NJ CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE VALID 181834Z - 181930Z WW IS POSSIBLE THIS AFTERNOON ACROSS PARTS OF ERN PA AND CENTRAL/NRN NJ. THIS POTENTIAL WILL BE GREATER IF INSTABILITY INCREASES BEYOND THE CURRENT MARGINAL VALUES AND RADAR TRENDS SUGGEST MORE PERSISTENT UPDRAFTS. SURFACE ANALYSES INDICATED A CORRIDOR OF GREATER MOISTURE EXTENDING INLAND FROM THE NJ COAST INTO ERN PA...WITH VALUES IN THE LOWER 60S ACROSS MUCH OF NJ INTO EAST CENTRAL/SERN PA AND NEAR 60 IN NERN PA. ALTHOUGH CLOUDINESS HAS LIMITED SURFACE HEATING/ DESTABILIZATION AND WEAKER MIDLEVEL LAPSE RATES EXIST ACROSS THIS AREA...MUCAPE IS RANGING FROM 500-1000 J/KG. THE MARGINAL INSTABILITY AND LAPSE RATES SUGGEST INDIVIDUAL STORMS MAY STRUGGLE TO ATTAIN PERSISTENT UPDRAFTS...AND THUS POSE A SUFFICIENT THREAT FOR STRONG TO SEVERE TSTM COVERAGE THAT WOULD WARRANT A SEVERE WEATHER WATCH. DESPITE THE MARGINAL INSTABILITY...KINEMATICS ARE FAVORABLE FOR STORM ORGANIZATION AND SOME ROTATION. TRENDS IN LOW LEVEL FLOW PER OBJECTIVE ANALYSES AND AREA WSR-88D VWPS INDICATED AN INCREASE IN WIND SPEEDS WITH SOME BACKING TO SELY. THIS IS RESULTING IN AN INCREASE IN LOW LEVEL SHEAR FOR STORM ROTATION. STRONGER ESELY MIDLEVEL WINDS/DEEP SHEAR WILL CONTINUE TO INCREASE THIS AFTERNOON AS THE ATTENDANT CLOSED LOW LOCATED OVER THE CENTRAL APPALACHIANS SHIFTS NWD. REGIONAL RADAR IMAGERY SHOWED AN AREA OF SHOWERS/ EMBEDDED TSTMS EXTENDING FROM SERN PA THROUGH CENTRAL/NRN NJ AND OFFSHORE...WITH A FEW OF THE STORMS INDICATING PERIODIC LOW LEVEL ROTATIONAL COUPLETS. ..PETERS.. 05/18/2011 Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 totals so far from cell Link to comment Share on other sites More sharing options...
LMolineuxLM1 Posted May 18, 2011 Share Posted May 18, 2011 Might get out and chase when i am done work. Any suggestions? Link to comment Share on other sites More sharing options...
Ralph Wiggum Posted May 18, 2011 Share Posted May 18, 2011 Might get out and chase when i am done work. Any suggestions? Western Chesc. Looks like dry air sinking behind the cell we had earlier in Bucks. If you feel like a ride, Lancaster Co looks juicy as well. Link to comment Share on other sites More sharing options...
Thunder Road Posted May 18, 2011 Share Posted May 18, 2011 new MD says SPC will put us all in a SLGT at 20z: Mesoscale Discussion 803 MESOSCALE DISCUSSION 0803 NWS STORM PREDICTION CENTER NORMAN OK 0208 PM CDT WED MAY 18 2011 AREAS AFFECTED...MID ATLANTIC STATES NWWD THROUGH UPPER OH VALLEY CONCERNING...SEVERE THUNDERSTORM WATCH 305... VALID 181908Z - 182015Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 305 CONTINUES. DAY 1 SLIGHT RISK AREA WILL BE EXPANDED WNWWD INTO NRN OH AND ALSO NEWD ACROSS PARTS OF ERN PA AND NJ. FOR ERN PA/NJ SHORT TERM SEVERE WEATHER THREAT...REFER TO SPC MCD 802. ...NRN OH AND UPPER OH VALLEY... AT 19Z...REGIONAL RADAR IMAGERY SHOWED AREAS OF TSTMS EXTENDING FROM NRN VA...ERN WV NWWD THROUGH WRN PA AND ERN/NERN OH. ALTHOUGH INSTABILITY ACROSS MUCH OF THIS REGION REMAINS SOMEWHAT MARGINAL /MUCAPE 500-1200 J PER KG/...FORCING FOR ASCENT ATTENDANT TO A COMPACT SHORTWAVE TROUGH ROTATING NNWWD ACROSS WV AT THIS TIME IS LIKELY COMPENSATING AND AIDING IN STRONGER STORM DEVELOPMENT OVER THE UPPER OH VALLEY. THIS TREND WILL CONTINUE AS THIS MID-UPPER LEVEL FEATURE MOVES THROUGH WRN PA AND OH...WHERE VISIBLE SATELLITE IMAGERY HAS SHOWN BREAKS IN THE CLOUDS FOR GREATER SURFACE HEATING INVOF A NWWD EXTENDING SURFACE TROUGH. ...SRN AND ERN PARTS OF WW 305... WATER VAPOR IMAGERY SHOWED A SECOND SHORTWAVE TROUGH TRACKING NNWWD TOWARD THE DELMARVA/CHESAPEAKE BAY REGION WITH AN ATTENDANT 50 KT SSELY MIDLEVEL JET. INSTABILITY IS GREATER ACROSS THE SRN/ERN PARTS OF WW 305. THIS COMBINED WITH EFFECTIVE BULK SHEAR 35-45 KT WILL MAINTAIN A POTENTIAL FOR SUPERCELLS. ..PETERS.. 05/18/2011 Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 . Link to comment Share on other sites More sharing options...
Quakertown needs snow Posted May 18, 2011 Share Posted May 18, 2011 . Link to comment Share on other sites More sharing options...
Storm Clouds Posted May 18, 2011 Share Posted May 18, 2011 . Does the storm still have strong rotation? It is heading right for me! Link to comment Share on other sites More sharing options...
SmokeEater Posted May 18, 2011 Share Posted May 18, 2011 Does the storm still have strong rotation? It is heading right for me! Has some rotation, I could see the warning get extended for you. On second look, it's very very broad, maybe not. Should be a nice show none the less. Link to comment Share on other sites More sharing options...
SmokeEater Posted May 18, 2011 Share Posted May 18, 2011 New meso discussion out, slight risk getting expanded back in PA and NJ. MESOSCALE DISCUSSION 0803 NWS STORM PREDICTION CENTER NORMAN OK 0208 PM CDT WED MAY 18 2011 AREAS AFFECTED...MID ATLANTIC STATES NWWD THROUGH UPPER OH VALLEY CONCERNING...SEVERE THUNDERSTORM WATCH 305... VALID 181908Z - 182015Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 305 CONTINUES. DAY 1 SLIGHT RISK AREA WILL BE EXPANDED WNWWD INTO NRN OH AND ALSO NEWD ACROSS PARTS OF ERN PA AND NJ. FOR ERN PA/NJ SHORT TERM SEVERE WEATHER THREAT...REFER TO SPC MCD 802. ...NRN OH AND UPPER OH VALLEY... AT 19Z...REGIONAL RADAR IMAGERY SHOWED AREAS OF TSTMS EXTENDING FROM NRN VA...ERN WV NWWD THROUGH WRN PA AND ERN/NERN OH. ALTHOUGH INSTABILITY ACROSS MUCH OF THIS REGION REMAINS SOMEWHAT MARGINAL /MUCAPE 500-1200 J PER KG/...FORCING FOR ASCENT ATTENDANT TO A COMPACT SHORTWAVE TROUGH ROTATING NNWWD ACROSS WV AT THIS TIME IS LIKELY COMPENSATING AND AIDING IN STRONGER STORM DEVELOPMENT OVER THE UPPER OH VALLEY. THIS TREND WILL CONTINUE AS THIS MID-UPPER LEVEL FEATURE MOVES THROUGH WRN PA AND OH...WHERE VISIBLE SATELLITE IMAGERY HAS SHOWN BREAKS IN THE CLOUDS FOR GREATER SURFACE HEATING INVOF A NWWD EXTENDING SURFACE TROUGH. ...SRN AND ERN PARTS OF WW 305... WATER VAPOR IMAGERY SHOWED A SECOND SHORTWAVE TROUGH TRACKING NNWWD TOWARD THE DELMARVA/CHESAPEAKE BAY REGION WITH AN ATTENDANT 50 KT SSELY MIDLEVEL JET. INSTABILITY IS GREATER ACROSS THE SRN/ERN PARTS OF WW 305. THIS COMBINED WITH EFFECTIVE BULK SHEAR 35-45 KT WILL MAINTAIN A POTENTIAL FOR SUPERCELLS. ..PETERS.. 05/18/2011 Link to comment Share on other sites More sharing options...
Storm Clouds Posted May 18, 2011 Share Posted May 18, 2011 Has some rotation, I could see the warning get extended for you. On second look, it's very very broad, maybe not. Should be a nice show none the less. Okay thank you. Is there any lightning with it? Link to comment Share on other sites More sharing options...
SmokeEater Posted May 18, 2011 Share Posted May 18, 2011 Okay thank you. Is there any lightning with it? Not much. Link to comment Share on other sites More sharing options...
Rtd208 Posted May 18, 2011 Share Posted May 18, 2011 Up to 0.70" for the day, storm total since Sunday, 2.30" Link to comment Share on other sites More sharing options...
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