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July 26, 2012 Severe Weather Potential


earthlight

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nothing

Maybe an average of .50 in the bucket area wide all said and done tonight, CT looks to be the big winner, doesnt look like Hudson valley even sees much. City/BK/Jersey look pretty dry. Long island has a decent shot.

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FWIW RAP has a strong line dropping into the area between 8 and 9, some good storms in NNJ that die out as they hit the island, area clears out by 11.

Weird runs. SREFS linger precip until like 3 am, while RAP has it clear after 11 with more storms in NJ, less in CT...all over the place!

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Guys i live in the screw zone for severe weather and im nowhere near as pessimistic as some of you. This is one of our best chances for a widespread severe outbreak in years and some calling it bust the morning of? C'mon if anything i should be worried lol. All parameters are still very good for severe development, we just gotta watch the radar afternoon and especially into the evening to really get an idea of whats happening

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Guys i live in the screw zone for severe weather and im nowhere near as pessimistic as some of you. This is one of our best chances for a widespread severe outbreak in years and some calling it bust the morning of? C'mon if anything i should be worried lol. All parameters are still very good for severe development, we just gotta watch the radar afternoon and especially into the evening to really get an idea of whats happening

1. We get it.

2. we get it.

3. Storms are forecast to weaken quickly eastward across the island, you will see some rain and thunder, but definitely no severe. Sorry bud.

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GFS is whacky and was too far north with this mornings rain. it also has the area barely getting anything later, maybe some storms around 8/9 but nothing like SREFS/RAP are showing. I think it has been pretty poor with this event. handled this morning rains pretty poorly.

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When do the models ever depict the right location of convection on a sim radar or QPF map? Use the parameters in these situations.

GFS was off by 300 miles. But point taken. Just stating which models were best, so far NAM.

BTW the morning rains will clear by 1130, full sunshine rest of the day to heat it up. Shouldnt have too bad an effect

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GFS was off by 300 miles. But point taken. Just stating which models were best, so far NAM.

BTW the morning rains will clear by 1130, full sunshine rest of the day to heat it up. Shouldnt have too bad an effect

Thank you, every met last night had this dying mcs coming through between 6-9am. So far right on track

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GFS was off by 300 miles. But point taken. Just stating which models were best, so far NAM.

BTW the morning rains will clear by 1130, full sunshine rest of the day to heat it up. Shouldnt have too bad an effect

And the NAM also has over 2000 SBCAPE after sunset with fairly significant shear and winds in the low levels. Even with the coastal environment here, those paraemeters could still bring some severe to parts of LI.

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And the NAM also has over 2000 SBCAPE after sunset with fairly significant shear and winds in the low levels. Even with the coastal environment here, those paraemeters could still bring some severe to parts of LI.

I am intrigued by the SREFS general idea...storms blowing up in CT, where the LLJ will be primed, and moving southeast to Suffolk County, might be a good night for you.

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Please stop the cloud cover worry. All the models had this.

The clearing over Western PA will eventually spread our way.

Earthlight were still in the game as much as yesterday, i just think alot of people are jus prematurely panicking about this cloud cover/decaying MCS. The models this morning still have us in an area of enhanced severe weather later this evening right? I mean bluewave just posted this morning the 925mb chart that showed 55kt winds pretty above NYC and points east and west.

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078

ACUS01 KWNS 261222

SWODY1

SPC AC 261219

DAY 1 CONVECTIVE OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

0719 AM CDT THU JUL 26 2012

VALID 261300Z - 271200Z

...THERE IS A MDT RISK OF SVR TSTMS THIS AFTERNOON/EVENING FOR PARTS

OF THE OH VALLEY ACROSS PA TO SRN NEW ENGLAND...

..THERE IS A SLGT RISK OF SVR TSTMS SURROUNDING THE MDT RISK

FROM

OK TO WI...AND EWD TO THE MID ATLANTIC...

..OH VALLEY ACROSS PA TO SRN NEW ENGLAND THROUGH LATE EVENING

A MIDLEVEL SHORTWAVE TROUGH IS MOVING SEWD OVER NW MN THIS

MORNING...AND THIS WAVE IS PRECEDED BY SEVERAL EMBEDDED SPEED MAXIMA

AND MCV/S THAT WILL TRAVERSE THE OH VALLEY/PA/NY THIS AFTERNOON.

THUNDERSTORM CLUSTERS PERSIST THIS MORNING FROM NRN IL/INDIANA

ACROSS LOWER MI ALONG AND N OF A COMPOSITE OUTFLOW BOUNDARY...AS

WELL AS FARTHER E INTO PA/SRN NY IN A ZONE OF ENHANCED LOW-LEVEL

WAA. THE OVERALL TREND IN THE CONVECTION SHOULD BE CONTINUED

WEAKENING THROUGH THE MORNING...WITH THE OUTFLOW/EFFECTIVE COLD

FRONT EXPECTED TO KEEP MOVING SEWD ACROSS IL/INDIANA/SE LOWER MI.

THE WARM FRONT WILL PROGRESS EWD IN CONJUNCTION WITH A SURFACE LOW

AND DESTABILIZATION WILL OCCUR ACROSS PA/SRN NY/SRN NEW ENGLAND IN

THE WAKE OF THE MORNING CONVECTION.

STRONG INSTABILITY /MLCAPE OF 2500-4000 J PER KG/ AND WEAKENING

CONVECTIVE INHIBITION WILL ALLOW NEW SURFACE-BASED THUNDERSTORM

DEVELOPMENT BY ABOUT 18Z ACROSS CENTRAL INDIANA/OH AND W/NW PA ALONG

THE COLD FRONT AND LINGERING OUTFLOW BOUNDARIES. CONVECTION WILL

THEN GROW QUICKLY INTO MULTIPLE BANDS THROUGH THE AFTERNOON WHILE

SPREADING EWD ACROSS PA TOWARD SE NY AND SRN NEW ENGLAND...AND ESEWD

TOWARD NRN WV/MD...IN THE 21-00Z TIME FRAME. CONVECTIVE MODE WILL

BECOME PREDOMINANTLY LINEAR IN THE FIRST 1-2 HOURS AFTER

INITIATION...WITH BOWING SEGMENTS THE MAIN CONCERN. ADDITIONALLY...

DEEP-LAYER AND LOW-LEVEL SHEAR WILL BE STRONGER NEAR THE WARM FRONT

THIS AFTERNOON ACROSS SE NY AND ADJACENT AREAS...WHERE EMBEDDED

ROTATING STORMS AND A COUPLE OF TORNADOES WILL ALSO BE POSSIBLE.

WIDESPREAD DAMAGING WINDS WILL BE POSSIBLE IN MULTIPLE SWATHS GIVEN

THE STRONG INSTABILITY...STEEP LOW-LEVEL LAPSE RATES...DCAPE IN

EXCESS OF 1000 J/KG...AND 35-45 KT WLY MIDLEVEL FLOW.

day1.wind.gif

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Upton Is not worried about any cloud cover messing our severe chances up - here is the latest AFD

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE NEW YORK NY

748 AM EDT THU JUL 26 2012

NEAR TERM /UNTIL 6 PM THIS EVENING/

A WARM FRONT WAS APPROACHING THE AREA FROM THE WEST EARLY THIS

MORNING WITH SHOWERS/TSTMS ACCOMPANYING IT. AS THE FRONT MOVES

NORTH AND EAST OF THE AREA LATE THIS MORNING AND INTO THE

AFTERNOON THE CHANCES OF SHOWERS AND THUNDERSTORMS WILL TAPER OFF.

THE UPPER TROUGH OVER THE GREAT LAKES AND INTO THE NORTHEAST

DEEPENS THIS AFTERNOON AND INTO THE EVENING. THE AREA WILL BE WARM

SECTORED AND RAPIDLY DESTABILIZE THIS AFTERNOON AS IMPULSES MOVE

THROUGH THE UPPER FLOW AND SURFACE TROUGH DEEPENS. THE CHANCES OF

SHOWERS AND THUNDERSTORMS WILL INCREASE LATE IN THE DAY...WITH

CAPE VALUES INCREASING TO 3000 J/KG AND BULK SHEAR UP TO 40 KT.

THE THREAT OF SEVERE WEATHER WILL INCREASE THIS AFTERNOON AND WILL

MENTION POSSIBILITY WITH MAINLY THREATS DAMAGING WINDS AND LARGE

HAIL...AS LINES AND CLUSTERS OF STORMS DEVELOP.

WITH A WARM AND HUMID AIRMASS ACROSS THE REGION THIS

AFTERNOON...HEAT INDICES ACROSS THE EXTREME WESTERN NJ ZONES MAY

TOUCH 100 BRIEFLY. WITH UNCERTAINTY...SHORT LIVED TIMING...AND

ISOLATED NATURE WILL NOT ISSUE A HEAT ADVISORY.

THERE IS A HIGH RISK OF RIP CURRENTS AT THE OCEAN BEACHES THIS

AFTERNOON AND INTO THE EVENING.

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