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February 2020 General Discussions & Observations Thread


Rtd208
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2 hours ago, donsutherland1 said:

Following yesterday’s deep storm, a colder air mass moved into the region. Nevertheless, the high temperature reached 41° in New York City and the daily mean temperature was still 2° above normal.

Five photos from the New York Botanical Garden where the first crocus buds have broken forth. Whether they represent an accurate long-range forecast for the coming spring remains to be seen.

NYBG02082020-5.jpg

NYBG02082020-4.jpg

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Just walking around lately I've noticed those popping out the soil in random patches last week or so. Now I know im not losing it. Seems most nights stay above freezing this winter so makes sense. That forecast in the teens end of the week is gonna feel brutal if it verfies. I know this winter making me soft when upper 20s feels like an artic outbreak.

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34 minutes ago, Northwest NJ said:

Don,

 

I notice you post a lot of pictures from NYBG.  I worked there from 1987-1989 and have only been back once  but they bring back great memories.  Every year I say I am going to go at least once and see the train show but it never happens.  Thanks for sharing these pictures.

You're welcome. It's a beautiful place. It's also a great place to see the flora respond to the weather. Now that the train show is finished, the Garden had very few people this afternoon. The orchid show opens to the public next weekend. 

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Good Sunday morning, especially ne PA, nw NJ participants where light snow has started including here in Wantage as first flurries began ~230A. A minor event to be melted away by 11AM with snow moving out to the northeast of PA/NJ by 6 or 7am. The 00z/9 RGEM and ECMWF are best for this potential 1/2-1" event parts of ne PA and probably less than 1/2 inch event for Sussex County NJ...maybe more like 1 or 2 tenths. 00z 3KM NAM was much better than its 00z/9 12K NAM.  

Have appended (courtesy of Pivotal Weather) what happened this Saturday afternoon in terms of measurable which can translate to a 10/1 snow ratio of even greater ratio for the high terrain, mainly SE NYS and to the N and NE of Scranton PA.  

Looks to me that NE PA/ and NJ Sussex County high terrain (Vernon-Wantage) will pick up 1-3" between 11PM Sunday and 6AM Monday per latest ensembles and multiple models. That one has FGEN and much better dendrite growth and would not surprise to see a brief period of 1/2S up here in these parts by 4AM Monday. From what I can tell... EC/RGEM/NAM op runs all have trended slightly colder on the 00z cycle as compared to 12 hours earlier.  Again, the decent but small accums should be reserved for higher terrain.  245A/9

Screen Shot 2020-02-08 at 11.52.43 PM.png

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The next 8 days are averaging 39degs., or about 4.5degs. AN.

35* here at 6am.    34* at 6:30am.      39* by 10am.       42* by 11am, and already = to my High from yesterday.        46* by 1pm.

The next 17 days are averaging 36degs., or just about Normal. (06Z, GFS).    No snow till end of period.     A major storm will not be predicted ahead of time and will be an accident.     Maybe it snowed on 3 days this season but the models probably have identified about 30 different  days for snow.      The 12Z, GFS is up to an average 39degs. for the next 17 days, with no snow.

Just 6 BN days in the last 48 days, just 1 in the last 17 days.

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We have the typical  snowfall distribution across the region for Great Lakes cutter and coastal hugger storm tracks. Northern New England is always favored for the heaviest snowfall with storm tracks like this. BTV to CAR have  above normal snowfall to date. A zone of close to normal from BGM to ALB. Then below normal from PHI to BOS.

Seasonal snowfall through February 8th

.........Actual Snowfall.....Normal snowfall 

BTV....56.6...49.3

CAR...88.7...66.7

BGM..52.5...51.7

ALB...38.2....38.5

BOS...14.9....26.3

NYC.....4.8....14.7

ISP.......6.8.....14.5

PHI......0.3.....13.0

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5 hours ago, wdrag said:

Good Sunday morning, especially ne PA, nw NJ participants where light snow has started including here in Wantage as first flurries began ~230A. A minor event to be melted away by 11AM with snow moving out to the northeast of PA/NJ by 6 or 7am. The 00z/9 RGEM and ECMWF are best for this potential 1/2-1" event parts of ne PA and probably less than 1/2 inch event for Sussex County NJ...maybe more like 1 or 2 tenths. 00z 3KM NAM was much better than its 00z/9 12K NAM.  

Have appended (courtesy of Pivotal Weather) what happened this Saturday afternoon in terms of measurable which can translate to a 10/1 snow ratio of even greater ratio for the high terrain, mainly SE NYS and to the N and NE of Scranton PA.  

Looks to me that NE PA/ and NJ Sussex County high terrain (Vernon-Wantage) will pick up 1-3" between 11PM Sunday and 6AM Monday per latest ensembles and multiple models. That one has FGEN and much better dendrite growth and would not surprise to see a brief period of 1/2S up here in these parts by 4AM Monday. From what I can tell... EC/RGEM/NAM op runs all have trended slightly colder on the 00z cycle as compared to 12 hours earlier.  Again, the decent but small accums should be reserved for higher terrain.  245A/9

Screen Shot 2020-02-08 at 11.52.43 PM.png

Picked up a surprise 1 to 2 inches yday afternoon/evening here in Hawley PA and it’s snowing again

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NYC is currently in 7th place for warmest winter through February 8th at 39.2 degrees. A final average temperature of 38.4 or warmer qualifies for the DJF top 10.

Time Series Summary for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Mean Avg Temperature Dec 1 to Feb 8
Missing Count
1 2016-02-08 42.7 0
2 2002-02-08 41.5 0
- 1932-02-08 41.5 0
4 2012-02-08 40.4 0
5 1991-02-08 39.7 0
6 1950-02-08 39.4 0
7 2020-02-08 39.2 0
8 1933-02-08 39.1 0
9 1998-02-08 39.0 0
10 1999-02-08 38.9 0

 

Time Series Summary for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Season
Mean Avg Temperature 
Missing Count
1 2001-2002 41.5 0
2 2015-2016 41.0 0
3 2011-2012 40.5 0
4 1931-1932 40.1 0
5 1997-1998 39.6 0
6 2016-2017 39.3 0
7 1990-1991 39.1 0
8 1998-1999 38.6 0
9 1948-1949 38.5 0
10 1889-1890 38.4 0
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so far the coldest temperature this month in NYC is 30 I think...the record for the highest monthly min for Feb is 22 set in 1927...I think that record could fall this year...

year   Feb min...

1927.....22

2012.....20

2002.....19

2000.....19

1997.....19

2017.....19

1982.....19

1964.....19

1897.....19

1960.....18

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33 minutes ago, donsutherland1 said:

Today's preliminary value for the Arctic Oscillation is +5.180. That would surpass the daily record of +5.147, which was set in 1990.

 

6 minutes ago, bluewave said:

Looks like this is currently the 10th highest reading. 
 

 

48653827-53A3-49CE-89F4-017EE206D137.gif.1eba28ab346d40ceb59443407c055891.gif

 

 

 

And interestingly, it is not so much an expansive spatial coverage of low geopotential heights, as one might expect with a classical strongly +AO. The absurdly high value is a function of the incredible pressure gradient / geopotential heigh differential between the North Atlantic and Azores region. The magnitude of the cyclone near Greenland in concert with the anomalous subtropical ridging near Azores is mediating this incredible AO spike.

I have not, hitherto, seen such a gradient across the N ATL domain:

image.thumb.png.b499abdc1794f95fab19cdc557f384e9.png

 

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16 hours ago, Animal said:

Walt... nice call. Hopefully it occurs.

mt holly issued an alert for snow tomorrow night higher terrain 

Didn't snow much s half Sussex and all Warren Counties but nice coverings ne PA and up here... still snowing lightly here at 934A.  I like the odds for tonight...one thing thats happened. colder has been trapped, so far... in nw NJ...seldom is it colder here than MPO...but at my house in Wantage  22F we 740'MSL and MPO around 2000').   NAM didn't do so hot for this morning in en PA/nw NJ.  Monitoring for further development south of 12z/9 NAM.  One day at a time in the pattern.

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11 minutes ago, Isotherm said:

 

 

 

 

And interestingly, it is not so much an expansive spatial coverage of low geopotential heights, as one might expect with a classical strongly +AO. The absurdly high value is a function of the incredible pressure gradient / geopotential heigh differential between the North Atlantic and Azores region. The magnitude of the cyclone near Greenland in concert with the anomalous subtropical ridging near Azores is mediating this incredible AO spike.

I have not, hitherto, seen such a gradient across the N ATL domain:

 

 

These are some of the fastest jet stream winds that we have seen over the North Atlantic.

 

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1 hour ago, North and West said:

6380b9a06d994960d912ead9c5f2d3ff.jpg

This is like when we were kids here (in the 1980s and early 1990s)... warm when there's moisture; when it's freezing cold, it's dry.


.

 It was nothing like this 

 

It is much, much warmer now.

 

Emphasis on much.

 

I see 2 days with normal temps in the next 15 days. 

 

 

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