Jump to content
  • Member Statistics

    17,586
    Total Members
    7,904
    Most Online
    LopezElliana
    Newest Member
    LopezElliana
    Joined

January 26-27 Snowstorm Disco III


Baroclinic Zone

Recommended Posts

  • Replies 1.1k
  • Created
  • Last Reply

GYX gets tepid in their AFD: "NAM HAS LOW WELL TO THE SOUTHEAST OF THE AREA WITH LITTLE IMPACT ON THE FORECAST AREA. GFS BRINGS THE LOW FARTHER NORTH WITH SIGNIFICANT SNOW ALONG THE COAST. ECMWF IS A BIT FARTHER NORTH AND EVEN HEAVIER WITH PRECIP. PLAN TO USE A BLEND OF THE NAM/GFS MODELS FOR FORECAST...WHICH IS SIMILAR TO THE CURRENT FORECAST."

They should pull a Costanza and try forecasting the opposite -- they just might get a forecast correct this winter.

haha, wow. I thought this was funny too. They are like, hey, the Euro is impressive and consistent, lets not even consider it, and rather look at the NAM which has been all over the place and GFS who just got the memo today.

Link to comment
Share on other sites

The reason why I think this storm dosen't come that far north this time is because although we don't have an artic high in place as the storm comes up, the progressive pattern says a slight jerk east instead of going practically do north, northeast. The flow above us is fast and should stop the storm from being a wide spread rainstorm.

Link to comment
Share on other sites

000

FXUS61 KBOX 242305

AFDBOX

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE TAUNTON MA

605 PM EST MON JAN 24 2011

.LONG TERM /WEDNESDAY THROUGH MONDAY/...

-- Changed Discussion --MEDIUM RANGE MODELS CONTINUE TO SIGNAL STRONG COASTAL STORM TRACKING

S OF NEW ENGLAND IN THE LATE WEDNESDAY AROUND MIDDAY THURSDAY

TIMEFRAME. BEYOND THIS...MODELS SHOW A PROGRESSIVE LONG WAVE PATTERN

WITH BROAD LONG WAVE TROUGHING EXTENDING FROM A LARGE UPPER LOW

ACROSS NORTH CENTRAL CANADA INTO THE NORTHERN TIER STATES. NOTING

ONE OR TWO SHORT WAVES MOVING ALONG IN THE FLOW LATE IN THE PERIOD.

WEDNESDAY-THURSDAY...MODELS CONTINUE TO SIGNAL THE DEEPENING LOW

PRES WORKING UP FROM THE GULF COAST AND SE U.S. TO TRACK S OF NEW

ENGLAND...BUT A LOT OF OTHER ISSUES TO RESOLVE.

MODELS STILL HAVE SOME TRACK SPREAD...BUT ARE SETTLING IN ON THE LOW

PASSING CLOSE TO OR JUST INSIDE THE 40N/70W BENCHMARK BY MID MORNING

THURSDAY. HOWEVER...MODELS ALSO CONTINUE TO BRING QUITE A BIT OF

MILDER AIR RIDING AROUND THE LOW...ESPECIALLY AT THE H850-H700

LEVEL. THE BIG REASON FOR THIS IS THAT THERE IS NO COLD HIGH TO THE

NORTH OF THIS SYSTEM HELPING TO FUNNEL THE COLDER AIR IN. THIS IS

CRITICAL FOR TO HELP DETERMINE TRANSITIONS TO MIXED PRECIP...WHICH

APPEARS TO TRACK RATHER FAR INLAND...WITH A CHANGE TO RAIN EXPECT

ALONG THE S COAST.

ANOTHER PROBLEM WILL BE HOW QUICKLY THE COLD AIR WILL SCOUR OUT

INLAND...ESPECIALLY WITH THE DEEP SNOWPACK AND THE ARCTIC AIRMASS

THAT WILL EXIT TONIGHT AND A VERY COLD GROUND. THIS WILL ALSO IMPACT

MAINLY THE DEVELOPMENT OF FREEZING RAIN...POSSIBLY EVEN AS TEMPS GO

JUST ABOVE FREEZING WITH SUCH A COLD SURFACE.

ALSO NOTING A GOOD SLUG OF PRECIP WORKING UP THE COAST WITH THE

SURFACE LOW...SO COULD SEE SOME DECENT PRECIP WITH THIS SYSTEM. DOES

LOOK LIKE THE HEAVIER PRECIP WILL REMAIN OFFSHORE...BUT COULD SEE

SOME WORK INTO SOUTHERN AREAS...MAINLY WHERE THE TRANSITION TO RAIN

OCCURS.

SO...EXPECT PRECIP TO COMMENCE DURING THE DAY WEDNESDAY...THOUGH MAY

BE DELAYED A BIT FURTHER INLAND AS THE AIRMASS TAKES TIME TO MOISTEN

UP WITH SUCH A COLD AND DRY AIRMASS THAT WAS IN PLACE. THE MAIN PART

OF THE ACTION IS EXPECTED WEDNESDAY NIGHT AS THE LOW DEEPENS AND

PASSES S OF NEW ENGLAND. WILL ALSO SEE N-NE WINDS INCREASING DURING

THE NIGHT...WITH GUSTS UP TO 30-35 KT ALONG THE E COAST AND

ESPECIALLY ON CAPE COD AND THE ISLANDS. LOW TO MEDIUM PROBABILITY OF

WIND ADVISORY FOR THESE LOCATIONS.

LEANED TOWARD A BLEND OF THE GFS/HPC GUIDANCE AND THE ECMWF...THOUGH

THIS MODEL HAS BEEN TRENDING A BIT SLOWER WITH THE LOW/S EXIT ON

THURSDAY. WILL CONTINUE TO MONITOR THIS SITUATION VERY CLOSELY FOR

ISSUANCE OF WINTER STORM WATCHES FOR AT LEAST A PORTION OF THE

REGION.

Link to comment
Share on other sites

Why do you think toss it? I want to, just wanted to know your feelings on why. One thing I think is good however is the NAM precip came quite a bit north, and even though it still misses us, I had been hoping it was a trend.

Its to far SE, Nam is still trending NW as it was way east, Euro has been the most consistant, Thats the bus i am on.......

Link to comment
Share on other sites

Anyone else hear about a NOAA Recon Jet collecting data over the GOM tonight, which will be inputted into "the models" tomorrow?

Source: http://twitter.com/j...667778982051840

Upton AFD, 4:03:

HAVE CONTINUED BASICALLY THE PREVIOUS FORECAST UNTIL THINGS BECOME

CLEAR. NOTE THAT NOAA WINTER RECONNAISSANCE IS BEING FLOWN FOR THIS

SYSTEM IN THE GULF OVERNIGHT. THESE CRITICAL OBSERVATIONS WILL GET

INCLUDED INTO TOMORROW`S 12Z AND SUBSEQUENT MODEL CYCLES. THUS

EXPECT THINGS TO BECOME CLEARER TOMORROW. NO WATCHES WILL BE ISSUED

THIS AFTERNOON AS WERE STILL OVER 48 HOURS FROM POSSIBLE WARNING

CRITERIA.

Though in the same discussion they say this notorious and previously discussed bit, of course, which may need some work by 00z tonight. Fine for the coast like me at this point, but inland? We'll see:

PTYPE IS A MAJOR ISSUE WITH THIS EVENT AS MODEL SOUNDINGS SUPPORT A

WARM NOSE ALOFT. EVEN INLAND LOCATIONS SHOULD EXPECT AT LEAST SOME

MIXED PCPN. A WINTRY MIX APPEARS TO BE THE PREDOMINATE TYPE WITH MORE

RAIN TO THE EAST. OF COURSE WITH TRACK AND QPF AMOUNT HIGHLY

UNCERTAIN...ANY SNOW AMOUNT FORECAST IS EVEN MORE UNCERTAIN. IT DOES

APPEAR THAT LIKELIHOOD OF WARNING CRITERIA SNOW IS LOW...EVEN

INLAND.

Link to comment
Share on other sites

Upton AFD, 4:03:

Though in the same discussion they say this notorious and previously discussed bit, of course, which may need some work by 00z tonight. Fine for the coast like me at this point, but inland? We'll see:

The Euro has been showing a lot of sleet into CT...esp S of HFD in the Upton zones so its certainly possible that they struggle to see a lot of accumulations until the CCB gets going late. Obviously if something like the 18z GFS verified, then it would be a lot snowier, but the Euro and its ensembles have been pretty steady. They can always ramp up tonight if it looks a bit colder...but its tougher to hype it and then ramp back down if it looks like there will be a ton of sleet and then less than warning snow on the back end.

Link to comment
Share on other sites

Well, looks like we've cleared another model cycle and all systems go. Feeling pretty good about the outcome here. That DT's first guess map someone posted this AM looks pretty good to me. If indeed this storm lands a punch here on the East slope it will be record January. This Winter could easily vault into some pretty rarified air. -3* currently.

Link to comment
Share on other sites

Upton AFD, 4:03:

Though in the same discussion they say this notorious and previously discussed bit, of course, which may need some work by 00z tonight. Fine for the coast like me at this point, but inland? We'll see:

They might sing a different tune tomorrow but this is their afternoon briefing

http://www.erh.noaa.gov/okx/WxBriefing_FB.pdf

Link to comment
Share on other sites

BOX is saying that the heaviest stays off shore, yet the mixing works far inland.....not sure I buy that.

They are talking about the nose of the warm conveyor belt. The Euro had 2"+ offshore and GFS has a max on the Cape...but obviously still big precip makes it over interior SNE.

Link to comment
Share on other sites

The Euro has been showing a lot of sleet into CT...esp S of HFD in the Upton zones so its certainly possible that they struggle to see a lot of accumulations until the CCB gets going late. Obviously if something like the 18z GFS verified, then it would be a lot snowier, but the Euro and its ensembles have been pretty steady. They can always ramp up tonight if it looks a bit colder...but its tougher to hype it and then ramp back down if it looks like there will be a ton of sleet and then less than warning snow on the back end.

They are really playing the heavy rain up,

http://www.erh.noaa.gov/okx/WxBriefing_FB.pdf

Link to comment
Share on other sites

I'm starting to feel a little less comfortable here ... on top of the initial conditions of high uncertainty and discomfort :lol:

I want to see a good shift west tonight.

If there is one it should start here at 0z or 12z tomorow as we are getting inside of hr48, The 18z GFS did have a robust look to the clipper on Saturday here at least if all else failed.......lol

Link to comment
Share on other sites

Box afd is another shining example of the utter lack of confidence in an event still almost two days out.

So Box not sold on big storm..neither is Upton nor Grey, Albany a bit more enthusiasitc but still wary.

Hopefully there will be a much much sharper consensus by this time tomorrow!!

Well they are sold on a big storm but my meaning is a big winter storm with heavy snows over a good portion of any of respective office's forecast regions.

Link to comment
Share on other sites

You have made 5 posts today and all of them have said rain..There is no rain coming anywhere in CT.. WTF dude?

PTYPE IS A MAJOR ISSUE WITH THIS EVENT AS MODEL SOUNDINGS SUPPORT A

WARM NOSE ALOFT. EVEN INLAND LOCATIONS SHOULD EXPECT AT LEAST SOME

MIXED PCPN. A WINTRY MIX APPEARS TO BE THE PREDOMINATE TYPE WITH MORE

RAIN TO THE EAST. OF COURSE WITH TRACK AND QPF AMOUNT HIGHLY

UNCERTAIN...ANY SNOW AMOUNT FORECAST IS EVEN MORE UNCERTAIN. IT DOES

APPEAR THAT LIKELIHOOD OF WARNING CRITERIA SNOW IS LOW...EVEN

INLAND.

this is from NWS

lets see did they say RAIN ummm yup they did their is that word again also LOW WARNING criteria for snow inland .

just reporting what i read guys

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...