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June 2016 Discussions/Observations


bluewave

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Ensembles indicating a pattern more typical for El Nino/strong +PDO to start June than La Nina.

While it's still early in the La Nina development, ensembles have the Aleutian Low north

of Hawaii which is more in the El Nino/+PDO camp. The very warm SST's off the West Coast

and south of Alaska continue the record +PDO. Both EPS and GEFS want to strengthen 

this low and build the ridge over Western North America during the first week of June.

It will be interesting to see how the anomalous SST warmth there interacts with the

developing La Nina as the summer progresses.

 

EPS looking more El Nino +PDO to start June

 

 

Opposite pattern than typical El Nino to La Nina transition summer last seen in 2010

 

 

April set new monthly +PDO record and pattern continues

 

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June decade average temperature and extremes...so far the highest temperature for June in the 2010's is 95...The minimum is 50 which is the highest so far...it would be the first decade without a temperature below 50...

June......Ave temp...max...min...ave max/min...
1870's.....70.4.......na.....na.....na.....na
1880's.....70.5.......96.....48.....91.0.....51.5
1890's.....70.9.......97.....48.....93.6.....53.4
1900's.....70.0.......95.....48.....91.1.....52.7
1910's.....69.0.......95.....47.....90.9.....51.1
1920's.....70.1.......99.....45.....92.7.....51.0
1930's.....71.6.....101.....47.....93.7.....52.4
1940's.....71.5.......99.....44.....93.9.....51.1
1950's.....71.2.....100.....48.....94.2.....51.9
1960's.....72.0.....101.....48.....95.5.....52.7
1970's.....71.0.......95.....46.....91.1.....52.0
1980's.....71.7.......98.....47.....92.7.....52.6
1990's.....72.2.......98.....49.....92.8.....52.6
2000's.....71.3.......96.....49.....91.4.....52.5
2010's.....72.4.......95.....50.....91.4.....53.8....
1870/1880-
2009 ave 70.9.....101.....44.....92.7.....52.1
1980-
2009 ave 71.7.......98.....47.....92.3.....52.6

................................................................................

warmest average temperature and year.
76.2 1943
75.4 1966
75.2 1994
74.6 2010
74.5 1984
74.3 1925
74.3 1949
74.3 1957
74.2 1971
74.1 1991
74.1 1899

coolest
64.2 1903
65.2 1881
65.7 1916
66.8 1926
66.8 1902
67.2 1958
67.3 1927
67.4 1928
67.5 2009
67.5 1897


wettest June and year
10.27 2003

10.10 2013
10.06 2009
9.78 1903
9.30 1972
8.79 1989
8.55 2006
7.76 1887
7.58 1975
7.13 1938
7.05 1871
7.04 1928
6.88 1922

driest
0.02 1949
0.59 1999
0.98 1894
1.00 1901
1.14 1880
1.17 1966
1.25 1898
1.26 1906
1.27 1965
1.27 1908

warmest max. temperature and year
101 1966
101 1934
100 1952
99 1925
99 1943
99 1956
99 1964
Coolest max. temperature and year
81 1903
84 2009
84 1886
84 1916
85 1985
86 1928
86 1972
coolest min. temperature and year
44 1945...6/1
45 1929...6/3
46 1972...6/11
47 1938...6/1
47 1946...6/3
47 1945...6/6
47 1945...6/5
47 1879...6/7
47 1915...6/3
47 1932...6/8
47 1980...6/9
warmest min. temp. and year.
58 1892
58 1911
58 1952
58 1981
58 1989

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Ensembles signaling that the first week of June doesn't look as warm as the last week of May

with the ridge building over Western North America yet again. This is more of a +PDO

El Nino looking pattern than the typical one for a developing La Nina in June. It's

still early in the month, so it's hard to tell what happens for the whole month.

We would need a pattern change to ridge north of Hawaii or Aleutians with  Western 

trough for the classic hot Nino to Nina June like we saw in 2005 and 2010. Be interesting

to see how things turn out.

 

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If we end up with an average summer (give or take) it would fall into line with the last 3 years with that big +PDO and the ensuing cooler summers (as compared to '10-'12.  Would think however that the in-close warm water in the Atlantic would keep the NE on the warm side however.   (with maybe the cooler air relegated to the Lakes region?)

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Actually, a dismal start to June following a late May heat wave been normal the last few years. May 2013 ended with a 94, June 2013 gave us the 2-4 inch Andrea w/ lower/mid 60s chill on the 7th and more washouts on the 10th and 13th. May 2015 heat wave led to hot but wet 31st, and cold/wet sub-60 1st and 2nd of June. May 2012 heat wave led to a rather chilly June 4. Only in 2011 and 2014 was the area able to avoid having a particularly chilly+rainy day at the start of June.

Friday is already looking dismal -- highs barely make 60 on the GFS and the Euro hits an inch in one six hour period. GFS precipitation and Euro temps are also not looking great but they're not as bad as the first two. Also, Euro temps take a nosedive on the morning of June 8.

Sent from my iPad using Tapatalk

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This just looks like the continuation of the the recent pattern of alternating between

record heat and periods of strong to record blocking limiting the heat potential.

Remember the record heat in November and December giving way to record

blocking in January and February. Then early March record heat followed

by the blocking returning Late March and after. We just got the record high

of 96 at Newark so its time for the blocking to return.

 

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Figures that the biggest NAO drop of the year waits until June to happen.

Looks like the strongest early June NAO fall since 2012.

 

2012 6 1 -1.714
2012 6 2 -1.969
2012 6 3 -2.144
2012 6 4 -2.200
2012 6 5 -2.025
2012 6 6 -1.820
2012 6 7 -1.357

 

 

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Will this mean a sub-70 high?

Sent from my iPad using Tapatalk

In the summer months if it's a sunny day it's nearly impossible to get highs in the 60's.Usually the temps are near 80,even with the coolest air masses..your cool departure comes at night..If it's cloudy however or rainy,then yes you can see temps in the 60's or 70's

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In the summer months if it's a sunny day it's nearly impossible to get highs in the 60's.Usually the temps are near 80,even with the coolest air masses..your cool departure comes at night..If it's cloudy however or rainy,then yes you can see temps in the 60's or 70's

But clouds like the first week of May can do wonders for negative maximum departures.

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the only July day in my lifetime that had a max below 70 with Sunny skies all day was on 7/5/1979...69/53.....

I was just about to say I remember a day in 1997 that was like 62 with 3 inches of rain. Then I realized you wrote sunny day. I can't imagine how that is even possible in summer, you would need almost zero wind and insanely cold 850s. I would think even behind a strong cold front the wind would be too strong and you'd mix from 700mb

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the only July day in my lifetime that had a max below 70 with Sunny skies all day was on 7/5/1979...69/53.....

That's incredible. I've seen many July and August days with highs in the 60s, but all were under cloudy or rainy conditions.

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