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2/9-2/10 Inverted Trough/Mini-Coastal Storm


Zelocita Weather

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000

FXUS61 KOKX 052058

AFDOKX

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE NEW YORK NY

358 PM EST FRI FEB 5 2016

.SYNOPSIS...

LOW PRESSURE PASSES TRACKS TO THE CANADIAN MARITIMES

TONIGHT...WHILE HIGH PRESSURE BUILDS IN FROM THE WEST TONIGHT AND

REMAINS INTO THIS WEEKEND. DEEP LOW PRES WILL TRACK OVER THE ATLC

LATE SUN NGT INTO MON. AN ACTIVE WINTER PATTERN WILL THEN SET UP

OVER THE AREA THRU THE MIDDLE OF NEXT WEEK.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...

A GENERAL 6 TO 12 INCHES OF SNOW...WITH A FEW LOCALLY HIGHER

AMOUNTS...HAS FALLEN ACROSS LI AND CT. HIGHEST AMOUNTS HAVE BEEN

ACROSS CENTRAL PORTIONS OF BOTH REGIONS. THE HEAVY WET

SNOW...COMBINED WITH NORTHERLY WINDS OF 10 TO 20 MPH WITH GUSTS INTO

THE 30S...WILL CONTINUE A DANGEROUS THREAT FOR DOWNED TREE LIMBS AND

POWER LINES INTO THIS EVENING.

OTHERWISE...VIGOROUS SHORTWAVE ENERGY AND COASTAL LOW PRESSURE MOVES

TOWARDS THE CANADIAN MARITIMES TONIGHT...WITH HIGH PRESSURE

GRADUALLY BUILDING IN FROM THE WEST. GUSTY NW WINDS WILL

GRADUALLY SUBSIDE THROUGH THE EVENING. POTENTIAL FOR GOOD

RADIATIONAL CONDITIONS LATE TONIGHT ACROSS INTERIOR AND PINE

BARRENS...COUPLE WITH FRESH SNOWPACK...ALLOWING TEMPS TO FALL WELL

DOWN INTO THE TEENS. ELSEWHERE LOWS IN THE 20S.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/...

MODELS IN DECENT AGREEMENT WITH A DEVELOPING SPLIT UPPER FLOW. A

NORTHERN STREAM CUTOFF LOW WILL TRACK FROM CENTRAL ONTARIO INTO

CENTRAL QUEBEC SAT INTO SAT NIGHT...WITH RESULTANT CLIPPER SYSTEM

TAKING A SIMILAR TRACK. MEANWHILE A CUTOFF LOW SEPARATES INTO THE

SOUTHERN US SAT INTO SAT NIGHT FROM THE BASE OF AN APPROACHING

CENTRAL US TROUGH...WITH RESULTANT LOW PRESSURE DEVELOPING ALONG THE

GULF COAST.

FOR THE TRI-STATE...TRANQUIL AND SEASONABLY COOL CONDITIONS AS HIGH

PRESSURE BUILDS IN FROM THE CENTRAL US SAT MORNING...AND THEN SINKS

SE OF THE REGION FOR SAT AFT INTO SAT NIGHT.

HIGHS GENERALLY IN THE UPPER 30S TO LOWER 40S SATURDAY...BASED ON A

SLIGHT REDUCTION OF GUIDANCE BLEND DUE TO NEW SNOWPACK. POTENTIAL

FOR DECENT RADIATIONAL COOLING CONDS ACROSS INTERIOR ONCE AGAIN SAT

NIGHT...ALTHOUGH THIS MAY BE TEMPERED BY HIGH CLOUDS AND SW WINDS

NEAR THE COAST.

&&

.LONG TERM /SUNDAY THROUGH FRIDAY/...

LOW PRES WILL BEGIN TO RAPIDLY INTENSIFY OFF THE SERN CONUS ON SUN.

A WEAK RIDGE OF HI PRES OVER THE CWA DURING THIS TIME SO FAIR WX

WITH TEMPS AROUND AVG. THE LOW THEN TRACKS NEWD OVER THE

ATLC...REACHING A POINT ABOUT 350 MILES E OF THE BENCHMARK MON AFTN.

THE MODELS ARE IN REMARKABLE AGREEMENT WRT TO THE POSITION OF THE

LOW...WITH THE 12Z GEFS/GEM/GFS/ECMWF SOLNS VIRTUALLY STACKED ON TOP

OF EACH OTHER. THERE ARE SOME INTENSITY DIFFERENCES...BUT NOT MUCH.

AT 18Z MON...THE ECMWF GETS DOWN TO 971...THE GEM 975 AND THE GFS

977. THE GFS AND GEM HAVE TRENDED WWD. THE ECMWF IS RELATIVELY

UNCHANGED. BASED ON MODEL PROGS FOR THIS STORM EARLY THIS

WEEK...MODEL PERFORMANCE THIS YEAR AND CURRENT TRENDS...EXPECTING

THE STORM TO END UP TRACKING W OF THE CURRENT PROGS. AS A

RESULT...FCST DATA IS AUGMENTED ABV THE SUPERBLEND FOR WINDS AND

POPS. AT LEAST MINOR TIDAL FLOODING POSSIBLE WITH A NEW MOON ON MON.

WILL START A MENTION IN THE HWO FOR THE SYS. ALTHOUGH THE CURRENT

MODEL DATA SUGGESTS ONLY A GLANCING BLOW AT BEST...ALL INTERESTS

SHOULD PAY ATTENTION TO THIS STORM AS A MID 970S LOW TRACKING UP THE

COAST WOULD HAVE SERIOUS IMPACTS. ATTENTION THEN SHIFTS TO THE H5

LOW DROPPING INTO THE NERN CONUS TUE-THU. THE PATTERN SUPPORTS THE

DEVELOPMENT OF 2 WEAK LOWS TUE AND WED S OF THE REGION...PROVIDING

CHCS FOR SNOW. THERE IS SOME UNCERTAINTY...WITH THE ULTIMATE

LATITUDE OF THE SYS DICTATING SNOW CHCS AND AMTS. IN ADDITION...IF

THE PATTERN EASES UP AT ALL AND THE LOWS DEVELOP FURTHER NWD...SOME

RAIN IN THE MIX PARTICULARLY CSTL AREAS. ARCTIC AIR STILL LOOKS

POISED FOR THE WEEKEND. THE ECMWF USHERS IT IN WITH A CLIPPER FRI

WHICH WOULD BRING MORE SNOW CHCS. IN SUMMARY...THERE ARE CHCS FOR

PCPN IN EVERY PERIOD OF THE EXTENDED.

&&

.AVIATION /21Z FRIDAY THROUGH WEDNESDAY/...

LOW PRESSURE TRACKS INTO THE CANADIAN MARITIMES TONIGHT.

SNOW WILL COME TO AN END ACROSS KGON SHORTLY...WITH CONDS IMPROVING

TO VFR SHORTLY AFTER SNOW ENDS.

GUSTY NW WINDS THROUGH THIS EVENING...PRIMARILY RIGHT OF 310

MAGNETIC. GUSTS 25-30KT THRU EARLY EVENING...DIMINISHING LATE.

NY METRO ENHANCED AVIATION WEATHER SUPPORT...

DETAILED INFORMATION...INCLUDING HOURLY TAF WIND COMPONENT FCSTS

CAN BE FOUND AT:

HTTP:/WWW.ERH.NOAA.GOV/ZNY/N90 (LOWER CASE)

KJFK FCSTER COMMENTS: GUSTS MAY END AN HOUR OR SO EARLIER THAN

FORECAST THIS EVE.

KLGA FCSTER COMMENTS: GUSTS MAY END AN HOUR OR SO EARLIER THAN

FORECAST THIS EVE.

KEWR FCSTER COMMENTS: GUSTS MAY END AN HOUR OR SO EARLIER THAN

FORECAST THIS EVE.

KTEB FCSTER COMMENTS: GUSTS MAY END AN HOUR OR SO EARLIER THAN

FORECAST THIS EVE.

KHPN FCSTER COMMENTS: GUSTS MAY END AN HOUR OR SO EARLIER THAN

FORECAST THIS EVE.

KISP FCSTER COMMENTS: GUSTS MAY END AN HOUR OR SO EARLIER THAN

FORECAST THIS EVE.

.OUTLOOK FOR 18Z SATURDAY THROUGH WEDNESDAY...

.SATURDAY-SUNDAY...VFR.

.MONDAY...CHC SUB-VFR AND SNOW...ESPECIALLY EAST OF CITY. CHC NE

GUSTS AROUND 25KT.

.TUESDAY...SUB-VFR WITH SNOW LIKELY...POSSIBLY MIXED PTYPE DURING

THE AFTN AT THE COAST...TAPERING OFF LATE IN THE DAY.

.WEDNESDAY...CHC SUB-VFR WITH -SHSN. NW GUST AROUND 25KT.

&&

.MARINE...

LOW PRESSURE TRACKS TOWARDS THE CANADIAN MARITIMES TONIGHT. MINIMAL

GALE FORCE WINDS GUSTS ON THE CENTRAL AND EASTERN OCEAN WATERS AND

SMALL CRAFT GUSTS ACROSS THE REMAINDER OF THE FORECAST WATERS WILL

GRADUALLY DIMINISHING FROM W TO E THIS EVENING AS HIGH PRESSURE

BUILDS TOWARDS INTO THE WATERS. THE

SCA SEAS ON THE OCEAN WILL BE A BIT SLOWER TO SUBSIDE DUE TO

SOUTHERLY SWELLS...BUT SHOULD SUBSIDE BELOW SCA TOWARDS SATURDAY

MORNING. THEREAFTER...SUB SCA CONDS EXPECTED ON ALL WATERS INT

SAT NIGHT...ALTHOUGH WINDS GUSTS UP TO 20 KT POSSIBLE ON OCEAN

WATERS LATE SAT INTO SAT NIGHT.

WINDS AND SEAS BLW SCA LVLS ON SUN...THEN DEEP LOW PRES WILL TRACK E

OF THE WATERS SUN NGT AND MON. THIS WILL PRODUCE AT LEAST SCA

COND...WITH GALES POSSIBLE. IF THE STORM TRACKS CLOSE

ENOUGH...STORMS WILL BE POSSIBLE. SCA COND ARE LIKELY TO PERSIST ON

THE OCEAN RIGHT THRU THU. ELSEWHERE...PERIODS OF SCA LVL WINDS

POSSIBLE WITH NW FLOW DEVELOPING...ESPECIALLY WED AND THU.

&&

.HYDROLOGY...

WIDESPREAD PCPN IS POSSIBLE LATE SUN NGT THRU MON...AND AGAIN DURING

THE MIDDLE OF NEXT WEEK. MOST IF NOT ALL OF THE PCPN THAT FALLS

LIKELY TO BE IN THE FORM OF SNOW ATTM.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...

CT...NONE.

NY...NONE.

NJ...NONE.

MARINE...SMALL CRAFT ADVISORY UNTIL 10 PM EST THIS EVENING FOR ANZ330-

335-338-340-345.

GALE WARNING UNTIL 7 PM EST THIS EVENING FOR ANZ350-353.

SMALL CRAFT ADVISORY UNTIL 6 AM EST SATURDAY FOR ANZ355.

&&

$$

SYNOPSIS...JMC/NV

NEAR TERM...NV

SHORT TERM...NV

LONG TERM...JMC

AVIATION...JC

MARINE...JMC/NV

HYDROLOGY...JMC/NV

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I'm not sure about the mon deal, I'm thinking it's a miss. I'm not sure the trough can go neg tilt quickly enough to get it in here. I could be wrong of course. I do think tues/wed could be interesting though. If that first storm can get out of the way quickly enough, and heights can recover a bit more than is being modeled right now (18z GFS) it could be good. Definitely not writing anything off for this week yet. This is the 18z GFS, 90hrs out, plenty of time for some changes.

 

post-4973-0-70237100-1454720283_thumb.pn

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12z eps was a west shift as well...

12z gefs was east,along with esemble

12z Geps was a shift west as well

It's ensemble does look to shift west a bit as well...

I dunno if everyone was just focused mainly on today but, to me that does look like something that needs to be monitored...

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I think there is a decent chance that it does track west. The interaction of the short wave coming in will make a big difference. Many thins can ann I believe will change..

Exactly my thoughts too. The talk around this forum and other forums is that  we need proper spacing between the two waves so that the northern shortwave has room to dig and intensify. That's a fact. But another interesting scenario which you just hinted on and hasn't been talked about is if the offshore low can come close enough, the northern wave could pinwheel the low up the coast, or better yet a phasing between the two systems. We're also undergoing a stratospheric warming event which could be giving the models fits. Pretty much everything is on the table from a light snow event to a crippling blizzard. It will be very interesting how this all unfolds during the next few days.

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Which storm (if it's full potential was realized) has a better shot at getting us another all out Blizzard? The Monday Miller A or the Tuesday/Wednesday Miller B?

I'm assuming asking for both would be a bit much right, lol.

-Jason

As of right now I would say you stand a better chance of the Miller A producing for us. The  models have been creeping the storm westward, and it remains to be seen how close it gets to us. That in turn is making the Miller B scenario less and less likely. As for your second question, only one storm can be the dominate one if at all.

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As of right now I would say you stand a better chance of the Miller A producing for us. The models have been creeping the storm westward, and it remains to be seen how close it gets to us. That in turn is making the Miller B scenario less and less likely. As for your second question, only one storm can be the dominate one if at all.

Ok then that settles it. We do the Monday Miller A then. Thanks for the breakdown brother! We ride the NW trend is ur friend.

-Jason

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