Jump to content
  • Member Statistics

    17,588
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

Second Winter Storm Threat - Oct 29/30


Baroclinic Zone

Recommended Posts

A little uneasy (here in Boston metro) with GFS having a close-to-perfect track this far out... shifts further west are definitely still possible.

Can anyone comment on:

1) Mechanism for east turn: what's the kicker preventing this from hugging the coast even closer?

2) Role of very warm SSTs on track: can this effect baroclinic zone and track of low?

Link to comment
Share on other sites

  • Replies 1.5k
  • Created
  • Last Reply

WSW needs to go ASAP...people have no idea. Most people thought rain showers on Saturday. I mean...our school cancelled events and moved them to Saturday night. People have NO CLUE.

That said, hopefully models stay where they are tonight. It's perfect right now, but we are 48 hours out. How far west do you guys think it could move?

Link to comment
Share on other sites

WSW needs to go ASAP...people have no idea. Most people thought rain showers on Saturday. I mean...our school cancelled events and moved them to Saturday night. People have NO CLUE.

That said, hopefully models stay where they are tonight. It's perfect right now, but we are 48 hours out. How far west do you guys think it could move?

relax relax

Link to comment
Share on other sites

WSW needs to go ASAP...people have no idea. Most people thought rain showers on Saturday. I mean...our school cancelled events and moved them to Saturday night. People have NO CLUE.

That said, hopefully models stay where they are tonight. It's perfect right now, but we are 48 hours out. How far west do you guys think it could move?

I called my grandmother this afternoon around 3 PM and asked her if she watched the weather and sahe said yes then I asked her what have you heard about Saturday and she said windy.

I told her we look to get a big snow storm...she said Oh God not not this early.

Link to comment
Share on other sites

WSW needs to go ASAP...people have no idea. Most people thought rain showers on Saturday. I mean...our school cancelled events and moved them to Saturday night. People have NO CLUE.

That said, hopefully models stay where they are tonight. It's perfect right now, but we are 48 hours out. How far west do you guys think it could move?

:weenie::)

No need to do it now. We have a run tonight to fine-tune things. But, congrats east of 91!

Link to comment
Share on other sites

As Poison sings...TALK DIRTY TO ME

BUT

CONFIDENCE IS INCREASING OF A WIDE SWATH OF 4 OR MORE INCHES OF

SNOW ACROSS MUCH OF INTERIOR SOUTHERN NEW ENGLAND WITH UP TO 8

INCHES NOT OUT OF THE QUESTION FOR HIGHER TERRAIN AREAS SUCH AS

THE WORCESTER HILLS. IT IS STILL WAY TOO EARLY TO DISCUSS SPECIFIC

AMOUNTS IN ANY DETAIL. HOWEVER...THE POTENTIAL EXISTS OF ENOUGH

WET SNOW ACCUMULATION TO BRING DOWN TREES AND LARGE TREE LIMBS AND

ASSOCIATED POWER OUTAGES...POSSIBLY EVEN WIDESPREAD POWER OUTAGES

AND SOME ROAD BLOCKAGES. POTENTIAL WIND GUSTS TO 30 TO 40 MPH

ACROSS THE INTERIOR MAY ADD TO THE TREE DAMAGE CONCERN.

GIVEN THE CURRENT CONSENSUS TRACK OF THE SURFACE LOW...NORTHEAST

CONNECTICUT...HIGHER TERRAIN OF NORTHWEST RHODE ISLAND...CENTRAL

MASSACHUSETTS AND EVEN THE INTERIOR SUBURBS OF BOSTON APPEAR TO BE

MOST AT RISK.

I checked out Upton which is taking the cautious road?

LONG TERM /SATURDAY THROUGH THURSDAY/...

OTHER THAN THE NAM...NWP SYSTEMS APPEAR IN RATHER GOOD AGREEMENT IN

THE SYNOPTIC SCALE CYCLOGENESIS OFF THE MID ATLANTIC COAST SATURDAY

AFTERNOON PASSING CLOSE TO THE 40/70 CLIMATOLOGICAL BENCHMARK. THIS

DEVELOPMENT IS IN RESPONSE TO SHORTWAVE ENERGY OVER THE DAKOTAS THIS

AFTERNOON DEEPENING AND BECOMING NEGATIVELY TILTED. A FAIRLY CLASSIC

WINTER WEATHER EVENT FOR OUR REGION IF IT WERE NOT OCTOBER.

09Z SREF...12Z GEFS AND THE DETERMINISTIC MODELS WERE INCLUDED IN

THE LOCAL FORECAST EXCEPT FOR ALL ETA MEMBERS OF THE SREF WERE

DISCOUNTED AS WELL AS THE 12Z NAM. PTYPE DUE TO BOUNDARY LAYER TEMPS

IS THE MAJOR FORECAST ISSUE...THUS THERE IS HIGH UNCERTAINTY IN

MESOSCALE DETAILS. HERE`S MY THINKING... 1. THIS IS A HIGHLY

ANOMALOUS EVENT WHERE SIGNIFICANT LATE OCTOBER SNOW HAS NEVER BEEN

OBSERVED ON THE COASTAL PLAIN PER THE 1ST ORDER CLIMATE STATIONS.

EVEN INLAND...SCANS OF THE COOP DATA SHOWS THAT ACCUMULATING SNOW IS

ALMOST UNHEARD OF. 2. MOST PCPN IS IN THE AFTN AND SOLAR RADIATION

WILL LIKELY KEEP TEMPS ABOVE FREEZING AS CHANGE TO SNOW OCCURS. 3.

LASTLY...I COULD NOT FIND SUPPORT OF SFC TEMPS BEING BELOW FREEZING

IN ANY OF THE PROFILES I EXAMINED. THUS...IN COLLABORATION WITH HPC

WINTER WEATHER DESK AND SURROUNDING WFO`S...WE HAVE LIMITED SNOW

ACCUMULATION TO HIGHER INLAND ELEVATION AND ONLY ALLOWED FOR SLUSHY

TRACE AMOUNTS ON THE COAST - MOST OF WHICH WOULD OCCUR BETWEEN 5 AND

8 PM.

AS IT STANDS NOW...ONLY ACCUMULATION ON ROADWAYS IS EXPECTED AT

ELEVATIONS ABOVE AT LEAST 500` IF NOT 1000` SAT AFTN. ONCE THE SUN

SETS THOUGH...ACCUMULATION IN THE EVENING IS LIKELY FOR THE INLAND

ROADWAYS BEFORE THE SNOW ENDS. NO ROADWAY ACCUMULATION IS EXPECTED

FOR THE COASTAL PLAIN INCLUDING LONG ISLAND AND NYC.

IMPACT TO TREES IS ALSO UNCERTAIN AS DECIDUOUS TREES MAY EASILY SHED

REMAINING LEAVES. THUS THE WEIGHT ON TREES MAY NOT BE AS BIG A

PROBLEMS AS ONE MIGHT SPECULATE AS IT`S PAST PEAK COLOR FOR INLAND

AREAS. THUS...WILL NOT ISSUE A WATCH FOR IMPACT AS WELL AS THE LOW

CONFIDENCE OF REACHING WARNING CRITERIA (THOUGH IT`S NOT OUT OF THE

RANGE OF POSSIBILITIES).

Link to comment
Share on other sites

WSW needs to go ASAP...people have no idea. Most people thought rain showers on Saturday. I mean...our school cancelled events and moved them to Saturday night. People have NO CLUE.

That said, hopefully models stay where they are tonight. It's perfect right now, but we are 48 hours out. How far west do you guys think it could move?

Far enough for the Berks to be ground zero.

Link to comment
Share on other sites

I checked out Upton which is taking the cautious road?

LONG TERM /SATURDAY THROUGH THURSDAY/...

OTHER THAN THE NAM...NWP SYSTEMS APPEAR IN RATHER GOOD AGREEMENT IN

THE SYNOPTIC SCALE CYCLOGENESIS OFF THE MID ATLANTIC COAST SATURDAY

AFTERNOON PASSING CLOSE TO THE 40/70 CLIMATOLOGICAL BENCHMARK. THIS

DEVELOPMENT IS IN RESPONSE TO SHORTWAVE ENERGY OVER THE DAKOTAS THIS

AFTERNOON DEEPENING AND BECOMING NEGATIVELY TILTED. A FAIRLY CLASSIC

WINTER WEATHER EVENT FOR OUR REGION IF IT WERE NOT OCTOBER.

09Z SREF...12Z GEFS AND THE DETERMINISTIC MODELS WERE INCLUDED IN

THE LOCAL FORECAST EXCEPT FOR ALL ETA MEMBERS OF THE SREF WERE

DISCOUNTED AS WELL AS THE 12Z NAM. PTYPE DUE TO BOUNDARY LAYER TEMPS

IS THE MAJOR FORECAST ISSUE...THUS THERE IS HIGH UNCERTAINTY IN

MESOSCALE DETAILS. HERE`S MY THINKING... 1. THIS IS A HIGHLY

ANOMALOUS EVENT WHERE SIGNIFICANT LATE OCTOBER SNOW HAS NEVER BEEN

OBSERVED ON THE COASTAL PLAIN PER THE 1ST ORDER CLIMATE STATIONS.

EVEN INLAND...SCANS OF THE COOP DATA SHOWS THAT ACCUMULATING SNOW IS

ALMOST UNHEARD OF. 2. MOST PCPN IS IN THE AFTN AND SOLAR RADIATION

WILL LIKELY KEEP TEMPS ABOVE FREEZING AS CHANGE TO SNOW OCCURS. 3.

LASTLY...I COULD NOT FIND SUPPORT OF SFC TEMPS BEING BELOW FREEZING

IN ANY OF THE PROFILES I EXAMINED. THUS...IN COLLABORATION WITH HPC

WINTER WEATHER DESK AND SURROUNDING WFO`S...WE HAVE LIMITED SNOW

ACCUMULATION TO HIGHER INLAND ELEVATION AND ONLY ALLOWED FOR SLUSHY

TRACE AMOUNTS ON THE COAST - MOST OF WHICH WOULD OCCUR BETWEEN 5 AND

8 PM.

AS IT STANDS NOW...ONLY ACCUMULATION ON ROADWAYS IS EXPECTED AT

ELEVATIONS ABOVE AT LEAST 500` IF NOT 1000` SAT AFTN. ONCE THE SUN

SETS THOUGH...ACCUMULATION IN THE EVENING IS LIKELY FOR THE INLAND

ROADWAYS BEFORE THE SNOW ENDS. NO ROADWAY ACCUMULATION IS EXPECTED

FOR THE COASTAL PLAIN INCLUDING LONG ISLAND AND NYC.

IMPACT TO TREES IS ALSO UNCERTAIN AS DECIDUOUS TREES MAY EASILY SHED

REMAINING LEAVES. THUS THE WEIGHT ON TREES MAY NOT BE AS BIG A

PROBLEMS AS ONE MIGHT SPECULATE AS IT`S PAST PEAK COLOR FOR INLAND

AREAS. THUS...WILL NOT ISSUE A WATCH FOR IMPACT AS WELL AS THE LOW

CONFIDENCE OF REACHING WARNING CRITERIA (THOUGH IT`S NOT OUT OF THE

RANGE OF POSSIBILITIES).

It's well-reasoned........

Link to comment
Share on other sites

relax relax

lol I know. I think with the 4am update tomorrow they will be up. If I wake up and they aren't up, I'll be pretty nervous looking at the 00z runs haha.

I called my grandmother this afternoon around 3 PM and asked her if she watched the weather and sahe said yes then I asked her what have you heard about Saturday and she said windy.

I told her we look to get a big snow storm...she said Oh God not not this early.

Yeah...no one really knows. I saw a post on facebook that said there could be 3" of snow Saturday. I was thinking....yeah....or a lot more....

Link to comment
Share on other sites

hopefully the ensembles won't be so west relative to the op at 18z...

almost one of those situations where i wish the models hadn't locked into this track 40+ hours out....NAM track would be almost ideal for many

also: PINGS? right now in medfield...not sure how that works, but there must be some sneaky warm layer aloft

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Guest
This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...