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The Last Days Of Summer: September 2015 DISCUSSION/OBS


UnionWeatherWx

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Highs;

 

9/16:

HPN: 85

TEB: 91

NYC: 86

EWR: 88

LGA: 87

JFK: 84

ISP: 85

New Brunswick: 86

BLM: 82

TTN: 86

PHL: 87

ACY: 87

 

9/17

HPN: 86

TEB: 92

NYC: 89

EWR: 89

LGA: 87

JFK: 84

ISP: 83

New Brunswick: 88

BLM:  84

TTN: 86

PHL: 86

ACY: 85

 

 

9/18:

HPN: 83

TEB: 88

NYC: 87

EWR: 85

LGA: 85

JFK: 83

ISP: 81

New Brunswick: 87

BLM: 82

TTN: 84

PHL: 84

ACY: 82

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NYC  80 (+) days  76 of 81   (7/4: 75, 7/9: 79, 9/9: 79; 9/12: 79)

EWR 80 (+) days  78 of 81 (7/4: 79; 9/12: 79)

 

NYC TOP 5 80's streak

1. 62 (7/10-9/9/2015)

2. 59 (6/26-8/23/1944)

3. 41 (7/8-8/17/1943 and 7/4-8/13/2011)

4. 40 (6/20-7/29/1966)

 

EWR

1. 69 straight 80 (+) days  (7/5 - 9/11)

 

NYC 80 (+) Days 2015
 
April: 1
May: 18
Jun: 16
Jul: 29
Aug:  31 
Sep: 15
 
Top 5 for Central Park:

 

1. 108, 1944

2. 106, 1991

3. 104, 1959

4. 100, 1949 and 2005

 
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NYC  80 (+) days  77 of 82   (7/4: 75, 7/9: 79, 9/9: 79; 9/12: 79)

EWR 80 (+) days  79 of 82 (7/4: 79; 9/12: 79)

 

NYC TOP 5 80's streak

1. 62 (7/10-9/9/2015)

2. 59 (6/26-8/23/1944)

3. 41 (7/8-8/17/1943 and 7/4-8/13/2011)

4. 40 (6/20-7/29/1966)

 

EWR

1. 69 straight 80 (+) days  (7/5 - 9/11)

 

NYC 80 (+) Days 2015
 
April: 1
May: 18
Jun: 16
Jul: 29
Aug:  31 
Sep: 16
 
Top 5 for Central Park:

 

1. 108, 1944

2. 106, 1991

3. 104, 1959

4. 100, 1949 and 2005

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That ridge retrogrades west a little bit, which could allow for something to sneak up the coast either in the middle of this week or after next weekend's cold shot. 18z GFS still holding strong on the cold shot around Day 7/8, which could bring frost to the interior elevated areas. Should be the first 40s for the coastal plain.

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That ridge retrogrades west a little bit, which could allow for something to sneak up the coast either in the middle of this week or after next weekend's cold shot. 18z GFS still holding strong on the cold shot around Day 7/8, which could bring frost to the interior elevated areas. Should be the first 40s for the coastal plain.

I think the frost potential might be a tad overdone by the models, but that's just my opinion. Tomorrow night should have some 40s in the 'burbs, and I think next week will probably be lower to mid 40s.

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Monday and Tuesday should actually be closer to normal for this time of year before the

temps go back above normal again in NYC. Even when the daily highs are closer to normal

you can see the mins running warm.

NEW YORK CITY-CENTRAL PARK KNYC   GFSX MOS GUIDANCE   9/20/2015  0000 UTC                        FHR  24| 36  48| 60  72| 84  96|108 120|132 144|156 168|180 192       SUN  20| MON 21| TUE 22| WED 23| THU 24| FRI 25| SAT 26| SUN 27 CLIMO X/N  78| 57  72| 59  72| 58  78| 62  75| 61  73| 59  74| 60  72 56 72
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Monday and Tuesday should actually be closer to normal for this time of year before the

temps go back above normal again in NYC. Even when the daily highs are closer to normal

you can see the mins running warm.

NEW YORK CITY-CENTRAL PARK
 KNYC   GFSX MOS GUIDANCE   9/20/2015  0000 UTC                       
 FHR  24| 36  48| 60  72| 84  96|108 120|132 144|156 168|180 192      
 SUN  20| MON 21| TUE 22| WED 23| THU 24| FRI 25| SAT 26| SUN 27 CLIMO
 X/N  78| 57  72| 59  72| 58  78| 62  75| 61  73| 59  74| 60  72 56 72

No 80's for a while. Yay!

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I still think we will see another warm spell with at least three straight 80 degree days...If that happens it will make the following list...

 

following is a list of years with at least three straight days 80 or better for late Sept. and on...2005 had three form the 21st-23rd but it was the end of a long warm spell that started earlier in the month...
Year..consecutive 80+ Max.
1881..9/23-9/28......6...91
1891..10/3-10/5......3...86
1895..9/20-9/23......4...97
1898..10/3-10/5......3...81
1905..9/28-9/30......3...88
1914..9/20-9/24......5...95
1920..9/23-9/26......4...88
1921..9/28-9/30......3...87
1922..9/30-10/3......4...88
1927..9/30-10/2......3...90
1930..9/20-9/26......7...87
1934..9/23-9/27......5...83
1941..9/21-9/23......3...91
1941..10/4-10/6......3...94
1946..9/25-9/27......3...83
1946..10/4-10/7......4...87
1948..9/27-9/29......3...84
1949..10/9-10/12....4...88
1950..10/1-10/3......3...86
1951..9/19-9/23......5...85
1954..10/1-10/4......4...86
1954..10/11-10/14..4...87
1959..9/21-9/24......4...90
1959..9/27-9/30......4...83
1959..10/4-10/6......3...88
1961..9/22-9/25......4...90
1965..9/21-9/23......3...88
1968..9/17-9/26....10...87
1968..10/1-10/3......3...85
1970..9/21-9/26......6...94
1972..9/25-9/27......3...86
1980..9/21-9/23......3...94
1984..9/23-9/25......3...86
2004..9/21-9/23......3...82
2007..9/25-9/27......3...87
2007..10/4-10/8......5...87
2010..9/22-9/25......4...89


1959 had three periods three days or more above 80.
1968 had two but it also had the longest streak for late September with 10.
I could have missed a few warm spells but there have not been many in recent years.

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That ridge retrogrades west a little bit, which could allow for something to sneak up the coast either in the middle of this week or after next weekend's cold shot. 18z GFS still holding strong on the cold shot around Day 7/8, which could bring frost to the interior elevated areas. Should be the first 40s for the coastal plain.

Where do you consider the coastal plain to begin. Out here I doubt we see 40s at all. Pretty solid layer of insulation will keep it warmer. I was in the ocean yesterday and couldn't believe how warm it still was. I think it's a combination of consistently warm weather (especially the positive departures on low temps) and then no hurricane swells this year to upwell any cooler water.

post-5412-0-79717800-1442760749_thumb.jp

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