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March 2021


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1 hour ago, psv88 said:

23* this morning. Probably get a few more freezes out here. In the city now to get my second vaccine shot. Nice day to walk around with the kids

Good luck with your shot. My brother is taking his wife for her 2nd shot this morning at Javits as well. 

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8 hours ago, uncle W said:

If this year has no measurable snow in March but a little in April it would be only the third time that has happened in NYC...I think there is only two winters that had a great February with major storms with no measurable snow in March but measurable snow in April...1894 and 1921...

The truth is without the mid season / well timed SSW it'd likely have been a big bust. 

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A sustained period of above to much above normal temperatures is now developing. Tomorrow will again be fair and mild. In general, above normal temperatures will persist through the end of March.

There is potential for near record to record warm conditions to occur in eastern Canada on Monday and Tuesday.

The ENSO Region 1+2 anomaly was +0.9°C and the Region 3.4 anomaly was -0.3°C for the week centered around March 10. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.20°C and the ENSO Region 3.4 anomaly has averaged -0.80°C. La Niña conditions will likely give way to neutral-cool ENSO conditions as the spring progresses.

The SOI was +5.79 today.

The preliminary Arctic Oscillation (AO) figure was +1.469 today.

The 31° temperature recorded at Central Park on March 19 could be New York City's last freeze of 2020-21 based on a combination of the latest ensemble guidance and the diminishing frequency of April freezes.

April freezes have become less frequent in recent years. During the 1991-2020 base period, there were 12 cases where the last freeze occurred in April. The last time the temperature fell to freezing in April occurred in 2018.

Select April Statistics:

1951-80: Years with freezes: 17; Mean days with lows of 32° or below: 1.1
1961-90: Years with freezes: 17; Mean days with lows of 32° or below: 1.3
1971-00: Years with freezes: 16; Mean days with lows of 32° or below: 1.2
1981-10: Years with freezes: 12; Mean days with lows of 32° or below: 1.0
1991-20: Years with freezes: 12; Mean days with lows of 32° or below: 1.0

Least years with freezes: 10, 1984-2013

Most years with freezes: 26, 1874-1903, 1880-1909, 1895-1924, 1896-1925, and 1897-1926

Lowest number of average days with temperatures of 32° or below: 0.8, 1983-2012, 1984-2013, 1985-2014, and 1986-2015

Highest number of average days with temperatures of 32° or below: 3.7, 1871-1900 and 1872-1901

Least days in April with temperatures of 32°: 0, Most Recent: 2020

Least days in April with temperatures of 32°: 11, Most Recent: 1874   

Based on sensitivity analysis applied to the latest guidance, there is an implied 87% probability that New York City will have a warmer than normal March. March will likely finish with a mean temperature near 44.4° (1.9° above normal).

 

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On 3/18/2021 at 8:08 AM, donsutherland1 said:

It’s too soon for me to make any calls about snowfall for April. I do think this will be the last chance for snowfall in March given the forecast pattern and strong consensus on the guidance about warmer conditions for the remainder of the month beginning Sunday. 

I'm wondering if we will follow the script of 2009-10 since that is another winter we've been mimicking.  ENSO doesn't seem to matter for our extremely hot summers and this mild/dry spring pattern is very reminiscent as a lead up to some of our hottest summers.

 

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7 hours ago, donsutherland1 said:

A sustained period of above to much above normal temperatures is now developing. Tomorrow will again be fair and mild. In general, above normal temperatures will persist through the end of March.

There is potential for near record to record warm conditions to occur in eastern Canada on Monday and Tuesday.

The ENSO Region 1+2 anomaly was +0.9°C and the Region 3.4 anomaly was -0.3°C for the week centered around March 10. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.20°C and the ENSO Region 3.4 anomaly has averaged -0.80°C. La Niña conditions will likely give way to neutral-cool ENSO conditions as the spring progresses.

The SOI was +5.79 today.

The preliminary Arctic Oscillation (AO) figure was +1.469 today.

The 31° temperature recorded at Central Park on March 19 could be New York City's last freeze of 2020-21 based on a combination of the latest ensemble guidance and the diminishing frequency of April freezes.

April freezes have become less frequent in recent years. During the 1991-2020 base period, there were 12 cases where the last freeze occurred in April. The last time the temperature fell to freezing in April occurred in 2018.

Select April Statistics:

1951-80: Years with freezes: 17; Mean days with lows of 32° or below: 1.1
1961-90: Years with freezes: 17; Mean days with lows of 32° or below: 1.3
1971-00: Years with freezes: 16; Mean days with lows of 32° or below: 1.2
1981-10: Years with freezes: 12; Mean days with lows of 32° or below: 1.0
1991-20: Years with freezes: 12; Mean days with lows of 32° or below: 1.0

Least years with freezes: 10, 1984-2013

Most years with freezes: 26, 1874-1903, 1880-1909, 1895-1924, 1896-1925, and 1897-1926

Lowest number of average days with temperatures of 32° or below: 0.8, 1983-2012, 1984-2013, 1985-2014, and 1986-2015

Highest number of average days with temperatures of 32° or below: 3.7, 1871-1900 and 1872-1901

Least days in April with temperatures of 32°: 0, Most Recent: 2020

Least days in April with temperatures of 32°: 11, Most Recent: 1874   

Based on sensitivity analysis applied to the latest guidance, there is an implied 87% probability that New York City will have a warmer than normal March. March will likely finish with a mean temperature near 44.4° (1.9° above normal).

 

Surprised that we didn't have a late freeze last year when we had snow in May lol.

 

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8 hours ago, bluewave said:

The March low dewpoint and underperforming rainfall pattern continues. 


Newark Liberty SUNNY     60  13  15 W7     
 

F4DB39D7-C655-417C-87F2-639DAD079FDF.png.d7efb16d166beb221f10c2da99c9aff8.png
 


 


PRECIPITATION (IN)                                                    
  TODAY            0.00          1.75 1958   0.14  -0.14      T       
  MONTH TO DATE    0.92                      2.59  -1.67     2.24 

does that correlate well to our hottest summers, Chris?

 

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16 hours ago, bluewave said:

Newark is on track for its earliest last measurable snowfall following a 45”+ season. So you can see how extreme that AO reversal was back in mid-February. With the exception of 14-15, our snowfall has been very AO dependent. 
 

Time Series Summary for NEWARK LIBERTY INTL AP, NJ
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Total Snowfall Oct 1 to Apr 30
Last Measurable  
1 1996-04-30 78.4 4-10
2 1961-04-30 73.5 3-31
3 2011-04-30 68.2 3-21
4 1978-04-30 64.9 3-16
5 1994-04-30 64.5 3-18
6 2014-04-30 61.1 4-16
7 1958-04-30 58.3 3-21
8 1967-04-30 57.3 3-22
9 2003-04-30 53.1 4-7
10 1948-04-30 51.0 3-11
11 2010-04-30 47.9 2-26
12 2004-04-30 47.8 3-19
13 2015-04-30 46.4 3-21
14 2021-04-30 45.7 2-22

 

very similar to 2009-10

 

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On 3/18/2021 at 10:41 AM, bluewave said:


March has had an inverse relationship to February snowfall since the snowier era began in 2003.  All the 20”+ Februaries had under 4” during March in NYC. The under 5" Februaries generally had a nice rebound in March like in 2018. 

Monthly Total Snowfall for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Year
Feb
Mar
 
2010 36.9 T  
2014 29.0 0.1  
2006 26.9 1.3  
2003 26.1 3.5  
2021 26.0 T  
Monthly Total Snowfall for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Year
Feb
Mar
 
2020 T T  
2012 0.2 0.0  
2004 0.7 4.8  
2019 2.6 10.4  
2007 3.8 6.0  
2016 4.0 0.9  
2009 4.3 8.3  
2011 4.8 1.0  
2018 4.9 11.6  

 

I only notable exception to this I can think of is 2014-15

 

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On 3/18/2021 at 9:56 AM, Allsnow said:

This! March is one of the worst months of the year. I’m glad we didn’t get snow this month and we used it all in February 

Our snowiest Februaries can eclipse 30 inches.....a snowy March around here is like 10 inches lol.  Take the snowy February and run with it.

 

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The next 8 days are averaging 54degs.(45/63), or +10.0.

Month to date is 40.6[-0.1].        Should be 44.4[+2.8] by the 29th.

The GFS has 14" OF SNOW ON THE 29TH.!!    If this is the new GFS, it is going to have a short  life span.     Lobotomy is indicated.       The 06Z has no snow and little rain.   2.2" is now less than 1.0".    Mystery solved.      

Yesterday 59* in the City but just 50* here briefly.       Same today I think, 61*/50*.

44*(50%RH) here at 6am.  (was 43* at 1am.)      48* by 9am.       51* at 10am.     been 52* since 10:30am.,  now still at Noon.    {  City  is 59*,  LGA  just 53*.   }   Still stuck at 52* by 2pm.        53* at 3pm.    54* at 4pm.       56* at 5pm.       50* by 8pm.       48*  by 9pm.

This was the source for the snow.      Looks more like a needle mishap or the initial P-Wave of a major earthquake:

1616284800-HCQaxIRmQsw.png

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7 minutes ago, CIK62 said:

The next 8 days are averaging 54degs.(45/63), or +10.0.

Month to date is 40.6[-0.1].        Should be 44.4[+2.8] by the 29th.

The GFS has 14" OF SNOW ON THE 29TH.!!    If this is the new GFS, it is going to have a short  life span.     Lobotomy is indicated.

44*(50%RH) here at 6am.

It’s the Classic GFS that has it. V16 has nothing. 
 

Wondering why the implementation still hasn’t happened yet unless I’m blind. 

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