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May 2020 General Discussions & Observations Thread


Rtd208
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44 minutes ago, Newman said:

JFK looks to finish the month at 1.33" of rain, putting it 4th driest all time for the month of May I believe.

Yeah, it was the 4th driest.

Time Series Summary for JFK INTERNATIONAL AIRPORT, NY - Month of May
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Total Precipitation 
Missing Count
1 2015 0.46 0
2 1964 0.62 0
3 1986 1.09 0
4 2020 1.33 1
5 1962 1.45 0

 

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May 2020 concluded with an estimated mean temperature of 60.3° in New York City. That made this May the coldest May since 2008 when the average temperature was 60.1°.

June will start unseasonably cool with a morning temperature in the lower to middle 50s in New York City and 40s in some of the suburbs. Warmer weather should follow this latest cool shot. Late in the first week of June into the start of the second week of June, readings could be in the 80s in at least parts of the region. Nevertheless, no excessive heat is likely through at least the first ten days of June in the Middle Atlantic and southern New England regions.

The ENSO Region 1+2 anomaly was -0.1°C and the Region 3.4 anomaly was -0.4°C for the week centered around May 20. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.12°C and the ENSO Region 3.4 anomaly has averaged +0.20°C. ENSO Region anomalies have continued to cool into late May. Neutral-cool conditions will likely prevail through mid-summer. The probability of the development of a La Niña event during late summer or early autumn has increased.

The SOI was +20.01 today. This is the first time the SOI has reached or exceeded +20.00 since August 10, 2019 when the SOI wsa +20.15.

Today, the preliminary Arctic Oscillation (AO) figure was -1.165.

On May 30, the MJO was in Phase 8 at an amplitude of 1.555 (RMM). The May 29-adjusted amplitude was 1.311.

June will likely have a temperature anomaly within 1° of normal (some areas on the cool side, others on the warm side) within the Middle Atlantic and southern New England regions.

 

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6th lowest number of days to reach 70 this spring at Newark.

Time Series Summary for NEWARK LIBERTY INTL AP, NJ - Mar through May
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Number of Days Max Temperature >= 70 
Missing Count
1 1940 13 0
2 1967 14 0
3 1966 15 0
4 2003 16 0
5 1997 17 0
- 1950 17 0
6 2020 18 0
- 1973 18 0
- 1968 18 0
- 1956 18 0
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  • 2 weeks later...
On 5/31/2020 at 8:27 AM, bluewave said:

100 degree days have been few and far between since the record Northeast Pacific warming in 13-14.

Time Series Summary for LAGUARDIA AIRPORT, NY - Jan through Dec
Click column heading to sort ascending, click again to sort descending.
Year
Number of Days Max Temperature >= 100 
Missing Count
2019 1 0
2018 0 0
2017 1 0
2016 0 0
2015 0 0
2014 0 0
2013 2 0
2012 1 0
2011 1 0
2010 2 0

 

Time Series Summary for NEWARK LIBERTY INTL AP, NJ - Jan through Dec
Click column heading to sort ascending, click again to sort descending.
Year
Number of Days Max Temperature >= 100 
Missing Count
2019 0 0
2018 0 0
2017 0 0
2016 0 0
2015 0 0
2014 0 0
2013 2 0
2012 3 0
2011 4 0
2010 4 0


74B0D183-E875-4F67-ADB8-E0904F5FDB7E.png.2859637d0581bb147004b52198d91eb6.png

 

what caused that warming and how long do you think it'll last?

The low high for Spring 1968 really stands out!

 

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On 5/31/2020 at 2:34 PM, Cfa said:

Be glad it isn’t June of 1949, JFK recorded no measurable precipitation, only a trace, which is effectively nothing.

JFK - 0.00”

NYC - 0.02”

LGA - 0.03”

EWR - 0.07”

Remember August 1995 with all the wild fires?  I think we didn't have any precip at all that month until the very last day.....I wish it had waited for one more day (and it almost did, we got it in the hours before September started!)

With all that tropical activity in 1995 and most of it turned right before reaching us.

 

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On 6/10/2020 at 12:06 AM, LibertyBell said:

Remember August 1995 with all the wild fires?  I think we didn't have any precip at all that month until the very last day.....I wish it had waited for one more day (and it almost did, we got it in the hours before September started!)

With all that tropical activity in 1995 and most of it turned right before reaching us.

 

Yeah Aug 1995 had just 0.65" here. There was a stretch thru early Sept with only 0.02" in 33 days and 0.28" in 41 days.

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