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SNE Convective/Thunder thread


free_man

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Nicely defined seabreeze boundary on satellite along the CT and RI shore... Virtually no cu south of that line, but the sat animation shows growing agitation right on it in places. Unfortunately, if a storm did fire there it would only move immediately into the more stable marine air. What we need is for a storm to initiate up north and then move down this way...

Edit: maybe that little blip in central CT is far enough inland to do the trick. Would be perfectly placed for me, if it does develop into anything good.

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New MCD says watch unlikely with only 20% probs of a watch being issued.

I think I would consider a watch...I know there are major questions with regards to initiation but the thing is if something does pop and get going it's going to happen very quickly. However, people should be well aware of the potential today so it's probably not extremely important.

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New MCD says watch unlikely with only 20% probs of a watch being issued.

I think I would consider a watch...I know there are major questions with regards to initiation but the thing is if something does pop and get going it's going to happen very quickly. However, people should be well aware of the potential today so it's probably not extremely important.

coverage way too limited for a watch

boundaries to be had out there looking at vis though

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Mesoscale Discussion 939 < Previous MD mcd0939.gif

MESOSCALE DISCUSSION 0939

NWS STORM PREDICTION CENTER NORMAN OK

0125 PM CDT MON MAY 28 2012

AREAS AFFECTED...LK ERIE SHORE...TWIN TIERS INTO SERN NY...NRN

NJ...SRN NEW ENGLAND

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 281825Z - 281930Z

PROBABILITY OF WATCH ISSUANCE...20 PERCENT

SUMMARY...WITH THE DECAY OF THE EARLIER MCS...CONVECTIVE INITIATION

NOW REMAINS SOMEWHAT UNCERTAIN. SEVERAL SCENARIOS REMAIN

POSSIBLE...INCLUDING ADDITIONAL DEVELOPMENT AHEAD OF THE REMNANT MCS

IN SERN NY AND SRN NEW ENGLAND...AND DEVELOPMENT ALONG THE

STATIONARY FRONT/OUTFLOW MERGER OR LAKE BREEZE FARTHER W. GIVEN THE

CONSIDERABLE UNCERTAINTY IN INITIATION...THE NEED FOR A WW IS NOT

IMMEDIATELY APPARENT...THOUGH TRENDS ARE BEING MONITORED CLOSELY.

DISCUSSION...ILL TIMING OF THE EARLIER MCS HAS LED TO ITS

WEAKENING...NOW CLEARLY EVIDENT BY ITS APPEARANCE ON 1730Z SATELLITE

IMAGERY AND BY A LACK OF LIGHTNING. HOWEVER...AHEAD OF THE WEAK

UPPER WAVE THAT INITIATED THE MCS...LIGHTNING IS NOW NOTED IN

HARTFORD COUNTY CT. ALTHOUGH MESOANALYSIS REFLECTS AN UNCAPPED AIR

MASS...THE 12Z BUF SOUNDING AND SUPPORTING MODEL FORECASTS DEPICT A

WARM LAYER AT 700 MB THAT MAY BE SUPPRESSING DEEP MOIST CONVECTION.

ALTHOUGH SEVERAL MODEL FORECASTS ERODE THIS LAYER...OBSERVATIONAL

DATA SUGGESTS IT IS CURRENTLY UNCLEAR WHETHER LOW-LEVEL

MOISTENING/DESTABILIZATION WILL BE SUFFICIENT TO OVERCOME THE CAP.

HOWEVER...A SWD SAGGING COLD FRONT FROM NEW ENGLAND MAY ALSO PROVIDE

ENHANCED SURFACE CONVERGENCE FOR CONVECTIVE DEVELOPMENT LATER TODAY.

FARTHER W...A REMNANT OUTFLOW BOUNDARY FROM THE EARLIER MCS IS

MERGING WITH THE WARM FRONT ACROSS THE TWIN TIERS...WITH MORE RECENT

RADAR IMAGERY INDICATING ATTEMPTS AT INITIATION FROM SCHUYLER TO

BRADFORD COUNTY. WITH THE INITIAL UPPER WAVE PROGRESSING AWAY FROM

THE AREA...FORCING FOR ASCENT MAY BE DELAYED UNTIL THE NEXT SUBTLE

FEATURE...OBSERVED ON 1730Z WV IMAGERY APPROACHING LK ONTARIO. THE

BROADER UPPER RIDGE CASTS UNCERTAINTY ON COVERAGE.

REGARDLESS...IF STORMS CAN DEVELOP...STEEP LOW-MID LEVEL LAPSE RATES

AND MODEST WNWLYS ALOFT /PARTICULARLY ACROSS NY AND SRN NEW ENGLAND/

MAY SUPPORT SEMI-ORGANIZED BOWING SEGMENTS AND WEAK SUPERCELLS.

..HURLBUT/CARBIN.. 05/28/2012

ATTN...WFO...BOX...OKX...ALY...PHI...BGM...BUF...CTP...PBZ...

CLE...

LAT...LON 42757870 42727703 42307506 41757337 41657264 41377233

40907362 40897485 41067610 41307764 41397841 41677997

41478072 41908064 42497923 42757870

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