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Do We have one More in Us?


Damage In Tolland

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Hell of a BOX aftn AFD

 

 

.LONG TERM /MONDAY THROUGH SATURDAY/...

*/ HIGHLIGHTS...

- ARCTIC HIGH PRES AND UNSEASONABLY COLD FOR MONDAY
- STRONG OFFSHORE STORM TUESDAY INTO WEDNESDAY WITH SNOW/WIND
- HIGH PRES RETURNS FOR THURSDAY...TURNING SEASONABLE
- DECENT SHOT OF WET WEATHER AND MILD CONDITIONS FRIDAY

*/ OVERVIEW AND MODEL PREFERENCE...

WHETHER THE 22.12Z ECMWF WOBBLES AND SHOWS SIGNS OF RETROGRESSION IN
RESPONSE OF STRONG HEIGHT FALLS CENTERED WITHIN THE CLOSED H5 ADDS A
LEVEL OF UNCERTAINTY VERSUS A BLEND OF GFS/CANADIAN GUIDANCE. ON THE
ADVICE OF WPC ENSEMBLE MEANS ARE PREFERRED WHICH HIGHLIGHT A STRONG
OFFSHORE STORM FOR THE TUESDAY-WEDNESDAY TIMEFRAME. JUST HOW STRONG
AND BOTH THE TIMING AND TRACK OF WHICH VARIES AMONG DETERMINISTIC
AND ENSEMBLE MEMBERS. THUS THERE IS A HIGH LEVEL OF UNCERTAINTY WITH
REGARDS TO SPECIFICS. NO ONE SOLUTION IS PREFERRED.

*/ DAY-TO-DAY DETAILS...

MONDAY INTO MONDAY NIGHT...

ARCTIC HIGH PRES IN CONTROL. BREEZY DURING THE DAY WITH A CONTINUED
WELL-MIXED BOUNDARY LAYER UP TO H85. NW WIND GUSTS OF 10 TO 15 MPH
POSSIBLE WITH SCATTERED-BROKEN PANCAKE CUMULUS. CONSIDERING THIS AND
H85 TEMPS AROUND -16 TO -18C WARRANT HIGHS AROUND THE MID- TO UPPER-
20S /WELL BELOW-NORMAL BY 20 DEGREES/. ONE MAIN CONCERN IS THE VERY
LOW RELATIVE HUMIDITIES BELOW 20 PERCENT...BUT FEEL BOTH TEMPS AND
LIGHTER WINDS WILL LIMIT THE FIRE WEATHER POTENTIAL.

INCREASING HIGH-LEVEL CLOUDS OVERNIGHT AHEAD OF THE MIDWEEK STORM.
IT WILL BECOME CONSIDERABLY COLD WITH MINS AROUND THE LOW-TEENS...
BUT EFFECTIVE NOCTURNAL COOLING WILL BE LIMITED BY THE BLANKET-
EFFECT IN ADDITION TO SURFACE WINDS TURNING ONSHORE S/SE.

TUESDAY INTO WEDNESDAY...

THE MEAT AND POTATOES OF THE FORECAST. BROADLY SPEAKING...ARCTIC-
AND PACIFIC-ORIGIN DISTURBANCES UNDERGO PHASING AND AMPLIFY AS THEY
CYCLONICALLY DIG THRU THE BROADER TROUGH REGIME INVOKING A NEGATIVE-
TILT THAT CLOSES OFF IMMEDIATELY SE OF THE 40N/70W BENCHMARK. INTER-
ACTING WITH A FRONTAL ZONE ACROSS THE GULF OF MEXICO...SURFACE
CYCLOGENESIS PREVAILS AS AN AREA OF LOW PRES TUESDAY DEEPENS NE
TOWARDS THE 40N/70W BENCHMARK TUESDAY EVENING BOMBING OUT AND
UNDERGOING OCCLUSION TO A POTENTIAL CENTRAL PRESSURE AROUND 970-980
MB BY WEDNESDAY MORNING...GRADUALLY LIFTING OUT WEDNESDAY EVENING.
WHETHER THE LOW RETROGRADES WESTWARD TOWARDS BETTER PRESSURE FALLS
REMAINS IN QUESTION /SEE 22.12Z ECMWF/.

BEFORE GOING FURTHER...CONSIDER TWO THINGS: 1) THE ASSOCIATED ENERGY
IS JUST COMING ASHORE LIKELY TO BECOME BETTER-SAMPLED OVER THE NEXT
12-24 HRS...AND 2) POSSIBLY SUBSEQUENT TO THE PRESENT POOR-SAMPLING
THERE ARE SIGNIFICANT DIFFERENCES IN THE STRENGTH AND TIMING OF THE
LOW ALBEIT THE SUCCINCT NATURE OF THE TRACK. SO FEEL THE INTANGIBLES
LEND TO UNCERTAINTY CONCERNING SPECIFIC OUTCOMES. THUS THE REMAINDER
OF THIS DISCUSSION FOCUSES ON THE POTENTIAL WHAT/WHERE/WHEN OF
IMPACTS /AS NOTHING IS CERTAIN/ BASED ON SIGNALS DERIVED FROM THE
LATEST FORECAST GUIDANCE AND CIPS ANALOGS.

*/SNOW...

SYNOPSIS...TROWALING OF THE WCB TO THE NW-QUAD OF THE CLOSING WITHIN
ENHANCING DEFORMATION BENEATH THE RRQ OF THE UPPER-LEVEL JET YIELDS
DEEP-LAYER ASCENT THRU THE SNOW-GROWTH REGION. ANTICIPATING SW-NE
SNOW-BANDS.

- SNOW-BANDS LATE TUESDAY THRU WEDNESDAY THE HEIGHT OF WHICH WILL BE
AROUND WEDNESDAY MORNING WITH THE GREATEST THREAT ACROSS SE NEW
ENGLAND.

- WITH CIPS ANALOG GUIDANCE...HAVE MODERATE CONFIDENCE THAT WE MAY
NEED WINTER STORM WARNINGS ACROSS SE NEW ENGLAND WITH ADJACENT
ADVISORIES TOWARDS THE INTERIOR. AGAIN...STILL AN UNCERTAIN
FORECAST.

- A SHARP NW-SE CUTOFF OF PRECIP IS POSSIBLE AS ISALLOBARIC/
AGEOSTROPHIC N/NW FLOW DRIVES COLDER AND DRIER AIR TOWARDS THE
SYSTEM.

- BLIZZARD CONDITIONS? POSSIBLY. GREATEST CONFIDENCE OVER THE
COASTAL SOUTHEAST. LOW CONFIDENCE DUE TO AFOREMENTIONED INTANGIBLES
AND UNCERTAINTY. BLOWING AND DRIFTING OF SNOW MAY BE AN ISSUE TO
CONSIDER.

*/WINDS...

SYNOPSIS...BOMBING LOW AND STRONG PRESSURE FALLS LENDS TO A SURFACE
LOW PRESSURE CENTER OF 970-980 MB AROUND WHICH NORTHERLY WINDS WILL
AMPLIFY ROUGHLY 3-4 STANDARD DEVIATIONS /ANOMALOUS/.

- HEIGHT OF THE NORTHERLY WINDS CENTERS AROUND WEDNESDAY MORNING
WITH UPWARDS OF 70 MPH ROUGHLY 1-2 KFT AGL.

- WELL-MIXED BOUNDARY LAYER THRU THE FORECAST PERIOD /ESP OVER THE
WARMER WATERS/ WITH STRONG OFFSHORE PRESSURE-FALLS OF AROUND 35 MB
IN 6-HOURS.

- CONSIDERING THIS WITH THE WFO LOCAL CLIMATOLOGY...AND IMPACT
GUIDANCE PER CIPS ANALOGS...HAVE MODERATE CONFIDENCE OF HIGH-WIND
WARNINGS /GUSTS OF AT LEAST 58 MPH/ ALONG THE E/SE-SHORE /ESP CAPE
ANN...CAPE COD...NANTUCKET/ WITH THE POTENTIAL FOR WIND ADVISORIES
/46-57 MPH GUSTS/ ACROSS THE E/SE INTERIOR COASTAL PLAINS.

- MODERATE CONFIDENCE OF NORTHERLY WINDS EXCEEDING STORM-FORCE /48
KTS/ OVER THE SE WATERS WITH GALES FOR THE EASTERN AND FAR-SOUTHERN
WATERS.

*/COASTAL IMPACTS...

HIGH TIDES CENTER AROUND 7-8 AM/PM FOR THE E-SHORE OF NEW ENGLAND...
ROUGHLY 8-9 AM/PM SOUTHEAST...AND 4-5 AM/PM FOR THE S-SHORE OF NEW
ENGLAND...NONE OF WHICH APPEAR ASTRONOMICALLY HIGH. YET COMBINED
WITH WINDS...AM CONCERNED OF SIGNIFICANT SURGE VALUES AND COASTAL
IMPACTS ALONG THE NORTH-FACING SHORELINES SUCH AS CAPE ANN...WITHIN
CAPE COD BAY...AND NANTUCKET.

- MODERATE CONFIDENCE THAT THE COMBINATION OF HIGH TIDE WEDNESDAY
MORNING AND WINDS MAY YIELD POTENTIAL SPLASHOVER AND MINOR COASTAL
FLOODING CONCERNS. MORE SIGNIFICANT IMPACTS POSSIBLE.

- MODERATE CONFIDENCE OF WAVE HEIGHTS EXCEEDING AT LEAST 10 FEET...
PERHAPS GETTING ABOVE 20 FEET FOR THE SOUTHEAST WATERS.

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First of all the storm is not over the benchmark as modeled... it's a decent jog SE of there. 

 

Secondly there will be a sharp cut off - the cold conveyorbelt/comma head is going to be very intense and mature as the storm passes by. It will be the haves and the haves nots. 

Ok you've started your i=opinions and I've stated mine and why I believe it to be correct.

 

At this point it's time to start thinking about public impacts/power/schools etc..

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Bob, no reason to try to deter folks from engaging me.

 

I'm not trolling, and feel as though my assertions are entirely founded.

I'm not trying to troll.

 

Hopefully I'm wrong.

I know, and I don't disagree with your assertions.  I just don't think the discussion needs to be prolonged any more than it has.

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Means nothing today,absolutely nothing, a 50 mile shift either way and its a different tune. No one is nailing where the CCB sets up.

 

Correct. 

 

There's a difference between saying that we don't know exactly where the CCB sets up and this storm having some fantasy giant/diffuse QPF shield because Kevin is looking at the model runs with the thickest weenie goggles known to man. 

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Means nothing today,absolutely nothing, a 50 mile shift either way and its a different tune. No one is nailing where the CCB sets up.

Verification usually ends up decently different than what the progs have at 90-96hr. I'm just sitting back and letting it play out.
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Verification usually ends up decently different than what the progs have at 90-96hr. I'm just sitting back and letting it play out.

yep,no confidence in any outcomes yet. Those claiming SE could be as wrong as those claiming to know its coming NW. Lots of east inflow before main show over a cold dome can not be discounted either.
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Yeah that's my area I'm basically on the cape and my interests is still tempered by the fact that I think historically speaking as modeled this would be one of/the largest late season snows in history here.

 

This is why I told you to hold off your end of winter thoughts :)

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I do think statements of whiffs or being pummeled are 50/50 at this juncture. One has to choose their words wisely around here. With the set-up as such and what the models are "leaning" toward is more than a scrapper. The opinions and statements from many get ripped for no reason what-so-ever.

 

Hey a two footer looks to be burying Eastern Mass. 

Many will dodge a bullet, a beast of a tempest just missed the Northeast.

 

EQUAL CHANCE.

What happened to respect and exchange of ideas.

 

I think Eastern areas get a storm with plowable potential. That is safe statement and I hope it does not offend anyone.         

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I'll take that 950mb s of New Bedford.

Thanks.

Lol, that would be absolutely insane(ly awesome). That clustering for a bump NW is definitely good to see.

Well, even box seems to be saying give this another 24 hours before clinging to any notions of confidence in the models. Really cool that a hit from a system with this kind of power is on the table, in late march no less.

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