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Potential thunderstorms/svr thunderstorms Thread


tombo82685

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This threat looks like a northern and western burbs threat to a some what lesser threat towards phl do to timing. Things should start popping late in the afternoon into the night with the approaching cold front. Shear is pretty limited, so supercell storms look to be at a minimal. Main threat will probably be damaging winds and some hail.

Li looks like -5 to -9 for the region

NAM_221_2011060818_F24_PLI_30_0_MB_ABOVE_GROUND.png

cape in the 3000-4000 range

NAM_221_2011060818_F24_CAPE_SURFACE.png

Tombo, I know its a severe threat but this threat has been going on for three to four weeks. I really really hope this model is right but I am going pessimistic on this chance. I have never seen so much severe weather do a circle around us like the last few weeks. I do not know when it is our time but I would like to see a least one training thunderstorm system over eastern PA rather than dying over the mts.

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Tombo, I know its a severe threat but this threat has been going on for three to four weeks. I really really hope this model is right but I am going pessimistic on this chance. I have never seen so much severe weather do a circle around us like the last few weeks. I do not know when it is our time but I would like to see a least one training thunderstorm system over eastern PA rather than dying over the mts.

Lol yea i know, making this thread was probably the kiss of death, but who knows. Had to change it from bri and ryan making those lousy threads for no storms drunk.gif

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Tombo, I know its a severe threat but this threat has been going on for three to four weeks. I really really hope this model is right but I am going pessimistic on this chance. I have never seen so much severe weather do a circle around us like the last few weeks. I do not know when it is our time but I would like to see a least one training thunderstorm system over eastern PA rather than dying over the mts.

Lets FOOKEN CASH THE HELL IN, its our time we are long overdue, time for me to finally get my ass out there and film like mad get some of our own EPIC FOOKEN lightning. I am ready bring it on.

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Lol yea i know, making this thread was probably the kiss of death, but who knows. Had to change it from bri and ryan making those lousy threads for no storms drunk.gif

haha, you could make anyone make this thread. but as long as Lee resides in the forum area, that's the real kiss of death. Chasing showers in DC, but not supercells by Lanco!:lightning::thumbsup:

in hindsight, let's see if you have the magic touch tombo. I think out best bet is if the storms up north can create some type of outflow boundry. overall, not too enthused about the days potential.

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haha, you could make anyone make this thread. but as long as Lee resides in the forum area, that's the real kiss of death. Chasing showers in DC, but not supercells by Lanco!:lightning::thumbsup:

in hindsight, let's see if you have the magic touch tombo. I think out best bet is if the storms up north can create some type of outflow boundry. overall, not too enthused about the days potential.

I was sick during those supercells that went through Lancaster county. It's bad when I get home after work and get a shower and get into bed. So I hope everyone cuts me a break.

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Lets FOOKEN CASH THE HELL IN, its our time we are long overdue, time for me to finally get my ass out there and film like mad get some of our own EPIC FOOKEN lightning. I am ready bring it on.

like i said in the outline of the topic north and west have the best shot while we have an eeee chance. The storms will be weakening as they come towards philly.

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like i said in the outline of the topic north and west have the best shot while we have an eeee chance. The storms will be weakening as they come towards philly.

Even though i have some sort of stomach issue still, I am telling you what, i am gonna go after the damn things if need be, i am wanting to get some great stuff on film, to have and to share.

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HUGE SPC outlook upgrade. MDT risk from Lehigh Valley north with 45% wind probs and a hatched hail area !

...NEW ENGLAND WSWWD ACROSS THE MIDWEST/OH VALLEY... POTENTIALLY WIDESPREAD/DAMAGING WIND EVENT IS FORECAST ACROSS THE NORTHEAST U.S. TODAY. ONGOING CONVECTION ACROSS THIS RISK AREA HAS DIMINISHED EARLY THIS MORNING...WITH CONVECTIVE-COOLED AIR OVER SRN NEW ENGLAND EXPECTED TO CONTINUE RECOVERING. AS A LARGE PLUME OF VERY STEEP LAPSE RATES ATOP A VERY MOIST /NEAR 70 DEWPOINTS/ BOUNDARY LAYER COMBINES WITH CLEARING SKIES SUPPORTING STRONG WARM SECTOR HEATING...MIXED-LAYER CAPE OF 2000 TO 3000 J/KG IS EXPECTED TO DEVELOP QUICKLY THROUGH EARLY AFTERNOON. AN OUTFLOW BOUNDARY INVOF THE MID AND UPPER OH VALLEY -- AND THE COLD FRONT NOW CROSSING THE LOWER GREAT LAKES/ST. LAWRENCE VALLEY -- WILL BECOME THE FOCUS FOR WIDESPREAD STORM DEVELOPMENT OVER THE NEXT COUPLE OF HOURS...SHIFTING SEWD WITH TIME ACROSS NY/PA/OH AND MUCH OF NEW ENGLAND. WITH STRONGEST DEEP-LAYER WLYS PROGGED TO REMAIN N OF THE MASON/DIXON LINE...MOST WIDESPREAD SEVERE THREAT APPEARS TO EXIST FROM SWRN PA ENEWD ACROSS SRN AND ERN NY INTO SRN NEW ENGLAND. HERE...VERY LARGE HAIL THREAT WITH INITIAL SUPERCELL STORMS SHOULD EVOLVE INTO MORE OF A DAMAGING WIND THREAT AS CONVECTION EVOLVES INTO ONE OR MORE BOWING LINES WHICH WILL MOVE QUICKLY EWD. A COUPLE OF TORNADOES MAY ALSO OCCUR -- PARTICULARLY EARLY ON WITH MORE ISOLATED STORMS. BY THIS EVENING...CONVECTION WILL HAVE SHIFTED WELL SEWD...FROM SRN AND ERN NEW ENGLAND WSWWD INTO NRN VA/WV. WITH WEAKER FLOW S OF THE MASON/DIXON LINE...MORE ISOLATED SEVERE POTENTIAL IS FORECAST.

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mcd1154.gif

MESOSCALE DISCUSSION 1154

NWS STORM PREDICTION CENTER NORMAN OK

1245 PM CDT THU JUN 09 2011

AREAS AFFECTED...MUCH OF THE NORTHEASTERN URBAN CORRIDOR...FROM

WASHINGTON D.C./BALTIMORE INTO THE BOSTON AREA

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 091745Z - 091915Z

MUCH OF THE NORTHEASTERN URBAN CORRIDOR IS BEING MONITORED FOR A NEW

SEVERE WEATHER WATCH ISSUANCE...WHICH MAY BE NEEDED BY 19-20Z.

STRONG/SEVERE STORM DEVELOPMENT IS NOW WELL UNDERWAY ACROSS UPSTATE

NEW YORK...IN ADVANCE OF A COLD FRONT ASSOCIATED WITH LARGE-SCALE

TROUGHING SLOWLY ADVANCING EASTWARD ACROSS EASTERN CANADA...AND EAST

OF THE LOWER GREAT LAKES REGION. AIDED BY MODEST DEEP LAYER

WESTERLY FLOW /20-30 KT/...UPSCALE CONVECTIVE GROWTH APPEARS LIKELY

DURING THE NEXT FEW HOURS...AS IT SPREADS EASTWARD INTO A MOIST AND

INCREASINGLY STRONGLY HEATED BOUNDARY LAYER NEAR PRE-FRONTAL

TROUGHING IN THE VICINITY OF THE URBAN CORRIDOR. A CONSOLIDATING

AND STRENGTHENING SURFACE COLD POOL ASSOCIATED WITH AN EVOLVING

SQUALL LINE PROBABLY WILL BE ACCOMPANIED BY STRONG...POTENTIALLY

DAMAGING WIND GUSTS. IT APPEARS THAT THIS MAY IMPACT THE GREAT NEW

YORK CITY METROPOLITAN AREA AND WESTERN/CENTRAL MASSACHUSETTS BY

21-22Z...THE BOSTON AREA SHORTLY THEREAFTER...AND PERHAPS

PHILADELPHIA/SOUTHERN NEW JERSEY INTO THE BALTIMORE AND WASHINGTON

D.C. AREA TOWARD 23-00Z.

..KERR.. 06/09/2011

dam you tombo! haha

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 452

NWS STORM PREDICTION CENTER NORMAN OK

235 PM EDT THU JUN 9 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

MUCH OF CONNECTICUT

NORTHERN DELAWARE

MASSACHUSETTS

FAR NORTHEASTERN MARYLAND

NEW JERSEY

SOUTHERN NEW YORK

SOUTHEASTERN PENNSYLVANIA

RHODE ISLAND

COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL

1000 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES EAST OF BOSTON

MASSACHUSETTS TO 25 MILES WEST SOUTHWEST OF WILMINGTON DELAWARE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 450...WW 451...

DISCUSSION...A BAND OF SEVERE STORMS FROM NRN PA NEWD INTO VT/NH

WILL CONTINUE TO ORGANIZE INTO ONE OR MORE LINES OF STORMS AND MOVE

ESEWD INTO THE EVENING HOURS. A COLD POOL IS EXPECTED TO DEVELOP IN

ASSOCIATION WITH THESE LINE/S...WHICH WILL ENHANCE THE FORWARD

MOTION OF THE LINE. ONCE THE LINE/S BEGINS TO INCREASE THEIR FORWARD

SPEED...THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS...INCLUDING

WINDS FROM 60 TO 80 MPH...ARE LIKELY. LARGE HAIL IS ALSO

EXPECTED...ESPECIALLY WITH STORMS THAT DEVELOP AHEAD OF THE LINE.

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 550. MEAN STORM

MOTION VECTOR 28030.

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 452

NWS STORM PREDICTION CENTER NORMAN OK

235 PM EDT THU JUN 9 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

MUCH OF CONNECTICUT

NORTHERN DELAWARE

MASSACHUSETTS

FAR NORTHEASTERN MARYLAND

NEW JERSEY

SOUTHERN NEW YORK

SOUTHEASTERN PENNSYLVANIA

RHODE ISLAND

COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL

1000 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES EAST OF BOSTON

MASSACHUSETTS TO 25 MILES WEST SOUTHWEST OF WILMINGTON DELAWARE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 450...WW 451...

DISCUSSION...A BAND OF SEVERE STORMS FROM NRN PA NEWD INTO VT/NH

WILL CONTINUE TO ORGANIZE INTO ONE OR MORE LINES OF STORMS AND MOVE

ESEWD INTO THE EVENING HOURS. A COLD POOL IS EXPECTED TO DEVELOP IN

ASSOCIATION WITH THESE LINE/S...WHICH WILL ENHANCE THE FORWARD

MOTION OF THE LINE. ONCE THE LINE/S BEGINS TO INCREASE THEIR FORWARD

SPEED...THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS...INCLUDING

WINDS FROM 60 TO 80 MPH...ARE LIKELY. LARGE HAIL IS ALSO

EXPECTED...ESPECIALLY WITH STORMS THAT DEVELOP AHEAD OF THE LINE.

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 550. MEAN STORM

MOTION VECTOR 28030.

Wind probs are 95+/60, very impressive.

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ww0452_radar.gif

Tornadoes

Probability of 2 or more tornadoes

Low (20%)

Probability of 1 or more strong (F2-F5) tornadoes

Low (5%)

Wind

Probability of 10 or more severe wind events

High (>95%)

Probability of 1 or more wind events > 65 knots

Mod (60%)

Hail

Probability of 10 or more severe hail events

Mod (60%)

Probability of 1 or more hailstones > 2 inches

Mod (50%)

Combined Severe Hail/Wind

Probability of 6 or more combined severe hail/wind events

High (>95%)

HazardTornadoesEF2+ TornadoesLikelihoodLowVery LowSevere Wind65 kt+ WindHighModerateSevere Hail2"+ HailModerateModerate

Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.

Note: Click for Watch Status Reports.

SEL2 0- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 452 NWS STORM PREDICTION CENTER NORMAN OK 235 PM EDT THU JUN 9 2011 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF MUCH OF CONNECTICUT NORTHERN DELAWARE MASSACHUSETTS FAR NORTHEASTERN MARYLAND NEW JERSEY SOUTHERN NEW YORK SOUTHEASTERN PENNSYLVANIA RHODE ISLAND COASTAL WATERS EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL 1000 PM EDT. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES EAST OF BOSTON MASSACHUSETTS TO 25 MILES WEST SOUTHWEST OF WILMINGTON DELAWARE. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2). 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 450...WW 451... DISCUSSION...A BAND OF SEVERE STORMS FROM NRN PA NEWD INTO VT/NH WILL CONTINUE TO ORGANIZE INTO ONE OR MORE LINES OF STORMS AND MOVE ESEWD INTO THE EVENING HOURS. A COLD POOL IS EXPECTED TO DEVELOP IN ASSOCIATION WITH THESE LINE/S...WHICH WILL ENHANCE THE FORWARD MOTION OF THE LINE. ONCE THE LINE/S BEGINS TO INCREASE THEIR FORWARD SPEED...THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS...INCLUDING WINDS FROM 60 TO 80 MPH...ARE LIKELY. LARGE HAIL IS ALSO EXPECTED...ESPECIALLY WITH STORMS THAT DEVELOP AHEAD OF THE LINE. 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 550. MEAN STORM MOTION VECTOR 28030. ...IMYww0452_radar.gif Message has not been issued yet.

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I don't understand the warning in Carbon Co. at this moment. Storms trying to form a solid line through the entire state.

I can see north of 80 but south of it probably didn't need a warning yet...they very well might in about 45 minutes or so.

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