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Vendor Forecast Discussion


am19psu

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For the first 18 days of March, here are the rankings at PHL since 1963:

 

  1    31.1  1984
  2    32.7  1978
  3    35.6  1993, 1969
  5    35.9  1970
  6    36.0  2005, 1996
  8    36.8  1981
  9    37.0  1980
 10    38.0  1967
 11    38.1  1975
 12    38.2  1965
 13    38.6  1989
 14    38.7  1968
 15    38.9  1963, 2007
 17    39.1  1999
 18    39.5  1994
 19    39.9  2003, 1982
 21    40.6  2001, 1998
 23    40.8  2013
 24    41.0  1987, 1986
 26    41.1  1972
 27    41.2  1971
 28    41.3  1997
 29    41.6  1976, 1992
 31    42.0  2009
 32    42.1  1988, 1966
 34    43.0  1985
 35    43.5  1964
 36    44.1  1991, 1979
 38    44.4  2008
 39    44.5  2006
 40    44.6  1974
 41    44.7  2004
 42    45.2  1983
 43    45.5  2002
 44    45.7  2010, 1995, 2011
 47    47.7  2000
 48    48.2  1990
 49    48.7  1973
 50    48.9  1977
 51    49.9  2012

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It is kind of interesting that March 1977 was the second warmest on the list. The winter of 76/77 was famously frigid in the eastern half of the U.S. By late January 1977, schools were closed across the Ohio Valley (partly due to extreme cold and partly due to a power shortage caused by frozen rivers blocking coal transport). Then, in February, it was like somebody flipped a switch. Not only did the extreme cold break, but it got downright warmish, hence the very warm temps in March.

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@BigJoeBastardi: GFS blasting Plains to east coast, between I80 and I 70.. looks a bit like April 1982 storm. http://t.co/VDPx6H6Uwn

post on this

@BigJoeBastardi: Mid nation to mid atlantic mauler deals crocus crushing,daffodil destroying,tulip terminating, petunia pounding snows http://t.co/8tOHnIzuSq

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For the first 18 days of March, here are the rankings at PHL since 1963:

 

  1    31.1  1984

  2    32.7  1978

  3    35.6  1993, 1969

  5    35.9  1970

  6    36.0  2005, 1996

  8    36.8  1981

  9    37.0  1980

 10    38.0  1967

 11    38.1  1975

 12    38.2  1965

 13    38.6  1989

 14    38.7  1968

 15    38.9  1963, 2007

 17    39.1  1999

 18    39.5  1994

 19    39.9  2003, 1982

 21    40.6  2001, 1998

 23    40.8  2013

 24    41.0  1987, 1986

 26    41.1  1972

 27    41.2  1971

 28    41.3  1997

 29    41.6  1976, 1992

 31    42.0  2009

 32    42.1  1988, 1966

 34    43.0  1985

 35    43.5  1964

 36    44.1  1991, 1979

 38    44.4  2008

 39    44.5  2006

 40    44.6  1974

 41    44.7  2004

 42    45.2  1983

 43    45.5  2002

 44    45.7  2010, 1995, 2011

 47    47.7  2000

 48    48.2  1990

 49    48.7  1973

 50    48.9  1977

 51    49.9  2012

 

So...coldest since 2005... :lol:

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He speculates can this be the Denver to Dover Daffodil Destroyer? Of course he thinks everyone will now say okay, thats it , its trending south. But he wants all to be aware that this is what we should expect with the models at this timeframe. While he doesn't see it being able to pull the mean trough back, it will still be strong enough to come far enough north so the snow target zone will be between I-80 and I70 from the Rockies to the east coast  He notes that the day of the storm, ( Saturday plains to Monday East coast) near record low maxes can occur in the snow and of course after this the snow on ground will enhance the cold.  Overall he thinks that unlike the example of the storm suppressed earlier in March, this should trend back north a bit because

1) It does have more separation in front of it

2) the Indexes are trending out of the pits toward up ao/nao while the PNA is trending toward neutral

3) its March and storms love to adjust north

 

He also made a point yesterday that the Weather Bell winter forecast should verify for most of their swath of 125% of normal snow for the season....with the only exception being from ABE to DCA

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Updated ranking through March 20th:

 

  1    32.5   1984
  2    34.0   1978
  3    35.0   1993
  4    36.1   1981
  5    36.2   1970
  6    36.6   2005
  7    36.7   1967
  8    36.8   1996
  9    37.0   1969
 10    37.7   1965
 11    37.8   1980
 12    38.4   1989
 13    38.7   1963
 14    39.1   2007
 15    39.2   1975
 16    39.6   1994, 1999
 18    40.0   1968
 19    40.5   2003, 1982
 21    40.9   1998
 22    41.0   1972, 2001, 2013
 25    41.1   1992
 26    41.2   1971
 27    41.3   1997
 28    41.4   1987
 29    41.8   1988
 30    42.1   1986
 31    42.2   2009
 32    42.6   1966
 33    42.9   1985
 34    43.0   1964, 1976
 36    43.8   2006
 37    44.2   2004, 1979
 39    44.6   1991, 1974
 41    44.9   2008
 42    45.4   2002
 43    45.8   1983
 44    46.0   2011
 45    46.1   1995
 46    46.9   2010, 2000
 48    47.9   1973
 49    48.0   1977
 50    48.1   1990
 51    51.2   2012

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Here's the rankings thru March 31st, so we know where we're "supposed" to be going.

 

  1    35.5   1984
  2    37.6   1965
  3    38.3   1970
  4    38.5   1967
  5    38.6   1996
  6    39.0   1978
  7    39.5   2005
  8    39.6   1969
  9    39.8   1993
 10    40.0   1981
 11    40.2   1980
 12    40.7   1971, 1972
 14    41.1   2001
 15    41.2   1975
 16    41.5   1992
 17    41.6   1982
 18    42.2   1989
 19    42.4   1999
 20    42.5   1966
 21    42.6   1964
 22    42.8   1994, 1963
 24    43.3   1974
 25    43.6   1983, 2009
 27    43.7   2007
 28    44.0   1997
 29    44.1   2011
 30    44.4   1968, 1986
 32    44.5   2006, 1985
 34    44.6   1988
 35    44.8   2008
 36    44.9   2003
 37    45.1   2004
 38    45.5   1998, 2002
 40    45.7   1987
 41    46.1   1990, 1991
 43    46.3   1976
 44    47.0   1979
 45    47.1   1973
 46    47.2   1995
 47    48.0   2000
 48    48.3   2010
 49    48.8   1977
 50    52.2   2012

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Through Today in NW Chester County if the month ended today (so not truly representative) this would be the 6th Coldest March in the last 30 years....

Here's the rankings thru March 31st, so we know where we're "supposed" to be going.

 

  1    35.5   1984
  2    37.6   1965
  3    38.3   1970
  4    38.5   1967
  5    38.6   1996
  6    39.0   1978
  7    39.5   2005
  8    39.6   1969
  9    39.8   1993
 10    40.0   1981
 11    40.2   1980
 12    40.7   1971, 1972
 14    41.1   2001
 15    41.2   1975
 16    41.5   1992
 17    41.6   1982
 18    42.2   1989
 19    42.4   1999
 20    42.5   1966
 21    42.6   1964
 22    42.8   1994, 1963
 24    43.3   1974
 25    43.6   1983, 2009
 27    43.7   2007
 28    44.0   1997
 29    44.1   2011
 30    44.4   1968, 1986
 32    44.5   2006, 1985
 34    44.6   1988
 35    44.8   2008
 36    44.9   2003
 37    45.1   2004
 38    45.5   1998, 2002
 40    45.7   1987
 41    46.1   1990, 1991
 43    46.3   1976
 44    47.0   1979
 45    47.1   1973
 46    47.2   1995
 47    48.0   2000
 48    48.3   2010
 49    48.8   1977
 50    52.2   2012

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......Paraphrasing from that well respected MET - JB today

 

Indicates that he is only restrained from throwing caution to the wind  by the Euro (which he says is trending to the bigger and further north idea) from saying the upcoming storm is April 6-7, 1982 again (major snow storm from the Plains to Northeast, maybe the greatest latest west/east snows on record). He also mentions that the pattern does not look that dissimilar from another legendary storm recently... February 5-6, 2010! (that is for the weenies) The WB forecast has a "sleddable snow of 4"-8" that was issued a couple of days ago running from Ohio all across Southern PA and then up I95 toward Beantown.

 

He goes on to say the "uncertainty" is not a question of if it will snow - it will , but how nasty can this get. Surprisingly JB finds the "extreme option is not laughable" and in fact given the time of the year, extreme describes what may happen

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JB tweet today

"Model precip and ratios not to be trusted as deepening upper air "bowling ball" and unusual cold air similar to 1982 storm stumped many"

"My point about snow amounts in the east.. as we get closer,the reality of what the model is showing sfc/aloft will translate to totals"

"On Your World With Neil Cavuto 4 oclock hour eastern. Have updated snowstorm idea ( not much change) Major I-70/I80 corridor to plains East"

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JB tweet today

"Model precip and ratios not to be trusted as deepening upper air "bowling ball" and unusual cold air similar to 1982 storm stumped many"

:lol: at him comparing the modeling of today with that of 1982.  I mean, I roll my eyes at a lot of what JB posts, but this is just ridiculous.

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Ray

I don't think he meant the models - he was saying the upper air pattern is similar....I bet he gets the upper air pattern right - now if verification follows....well that is a bigger problem

:lol: at him comparing the modeling of today with that of 1982.  I mean, I roll my eyes at a lot of what JB posts, but this is just ridiculous.

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The best dam movie I tell you. The models have fit this quote perfectly

 

It was a "Jump to Conclusions" mat. You see, it would be this mat that you would put on the floor... and would have different CONCLUSIONS written on it that you could JUMP TO. or

 

 

If things go well I might be showing her my O-face. "Oh... Oh... Oh!" You know what I'm talkin' about. "Oh!"

or

 

Hello Peter, whats happening? Ummm, I'm gonna need you to go ahead come in tomorrow. So if you could be here around 9 that would be great, mmmk... oh oh! and I almost forgot ahh, I'm also gonna need you to go ahead and come in on Sunday too, kay. We ahh lost some people this week and ah, we sorta need to play catch up or

 

No. No, man. ****, no, man. I believe you'd get your ass kicked sayin' something like that, man.

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The best dam movie I tell you. The models have fit this quote perfectly

 

It was a "Jump to Conclusions" mat. You see, it would be this mat that you would put on the floor... and would have different CONCLUSIONS written on it that you could JUMP TO. or

 

 

If things go well I might be showing her my O-face. "Oh... Oh... Oh!" You know what I'm talkin' about. "Oh!"

or

 

Hello Peter, whats happening? Ummm, I'm gonna need you to go ahead come in tomorrow. So if you could be here around 9 that would be great, mmmk... oh oh! and I almost forgot ahh, I'm also gonna need you to go ahead and come in on Sunday too, kay. We ahh lost some people this week and ah, we sorta need to play catch up or

 

No. No, man. ****, no, man. I believe you'd get your ass kicked sayin' something like that, man.

The NAM has the same issue as the equation to add .00001 cents for every transaction from accounting they use in that movie

 

that's how it's qpf always ends up through the roof :lol: it's all michael boltons fault

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To Andy's point JB tweeting away....not surprisingly he is not buyin what GFS is selling!

@BigJoeBastardi: http://t.co/VDPx6H6Uwn Snow acc map from Friday.Enclosed read area is where amounts could be several higher than

idea http://t.co/mk3jKP9mSW

@BigJoeBastardi: Big worry is this turns into a windblown power outage storm

near east coast, where snow is wetter

Almost all snow NYC,PHL!

@BigJoeBastardi: For "snow hole" people around PHL, this should be biggest storm of season ( DC too, but PHL probably gets more. see map)

@BigJoeBastardi: I am not staring at model precip printo out as upward motion and temps at snow formation levels, change ratios, even late

cold storm inland

@BigJoeBastardi: What a March, eh. Remember the http://t.co/kvqB5raSEp idea BEFORE the fact was for coldest since 96. Actually will be snowier than 96!

@BigJoeBastardi: Nam aiming heaviest snows at the "snowhole" that has missed in east. Keep in mind these are 10 to 1 ratios. http://t.co/lm0MXbVYR4

@BigJoeBastardi: RGEM precip/pressure presentation

Monday am http://t.co/YZRRSUYtzO

@BigJoeBastardi: Not buying GFS suppression as RGEM/NAM both north Lets see what ECMWF says but I like what I have

GFS may be adding confusion,not solution

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The best dam movie I tell you. The models have fit this quote perfectly

 

It was a "Jump to Conclusions" mat. You see, it would be this mat that you would put on the floor... and would have different CONCLUSIONS written on it that you could JUMP TO. or

 

 

If things go well I might be showing her my O-face. "Oh... Oh... Oh!" You know what I'm talkin' about. "Oh!"

or

 

Hello Peter, whats happening? Ummm, I'm gonna need you to go ahead come in tomorrow. So if you could be here around 9 that would be great, mmmk... oh oh! and I almost forgot ahh, I'm also gonna need you to go ahead and come in on Sunday too, kay. We ahh lost some people this week and ah, we sorta need to play catch up or

 

No. No, man. ****, no, man. I believe you'd get your ass kicked sayin' something like that, man.

 

You forgot the responses by Michael and Samir to Tom's "jump to conclusions" mat... and, yes, they are fitting, too:

 

"That is the worst idea I ever heard in my life"

 

"Yes, that is horrible, this idea".  

 

:lmao:  :lmao:  :lmao:

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I think jb is right about it being the biggest snow for philly this season...won't take much! gfs and euro give some snow....of course north and west do much better.

You are, sadly, right that it wouldn't take much.  PHL's biggest event this season remains a measily 1.5".

 

However, the GFS and EC both keep surface temps at PHL between 34 and 36F while its actually precipitating.  And precipitation rates on both are meager.  Plus the bulk falls during daylight.  You simply aren't going to get accumulation that way.

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You are, sadly, right that it wouldn't take much.  PHL's biggest event this season remains a measily 1.5".

 

However, the GFS and EC both keep surface temps at PHL between 34 and 36F while its actually precipitating.  And precipitation rates on both are meager.  Plus the bulk falls during daylight.  You simply aren't going to get accumulation that way.

That's why elevation is so important especially with this setup. I can see areas in chester county getting a decent amount while the airport gets another one of it's infamous trace amounts.

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