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June 2022


bluewave
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5 hours ago, bluewave said:

It’’s going to be a while before we get record heat again like we had yesterday. The whole pattern is shifting right as we start June. May featured consistent onshore flow and short periods record heat only lasting a day or two. The record ridge over the Northeast and Great Lakes is getting replaced by a trough. 

May pattern

54DAA0D8-5CBF-449E-87E8-582900952618.gif.2cf7b3f06ce1b54ec6064bdf9e40c0a9.gif

 

Much different pattern into mid-June


884A58DE-CF03-4539-B5EC-7424F517CAEB.thumb.png.76032521fad92df3c5aaefc2b1be921b.png

 

F9B2EB37-27D9-49D3-8DA3-08B6A5BE89E1.thumb.png.96ec97507064460ee896666c65cd6080.png

E2186C40-670F-44DA-8EFF-CBD8812D58CD.thumb.png.97a5951eef0e71d8b512fc82dceed85f.png

CFS now has a cool July too.Has Euro backed off yet from their hot Summer forecast?

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2 hours ago, KEITH L.I said:

CFS now has a cool July too.Has Euro backed off yet from their hot Summer forecast?

The effective range of most ensemble guidance is only about 7 to sometimes 15 days. We have been experiencing some very big swings in our weather recently. So trying to figure out the patterns beyond 2 weeks is usually pretty low skill.
 

 

 

 

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This was our greatest high temperature drop from May 31 to June 1. All the other years with such a warm end to May were also warm to start June. The high of 71° at Newark today was 27° cooler than the record high of 98° yesterday. So a continuation of the our big weather swings theme. 
 

Data for May 31 - NEWARK LIBERTY INTL AP, NJ
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
June 1st 
Difference  
 
 
2022-05-31 98 71 -27    
1987-05-31 96 94 -2    
1986-05-31 95 94 -1    
1939-05-31 95 83 -12    
2013-05-31 94 93 -1    
2007-05-31 94 92 -2    
1988-05-31 94 93 -1    
1944-05-31 94 87 -7    
1991-05-31 92 87 -5    
1956-05-31 92 87 -5    
1937-05-31 92 94 +2    
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In the wake of the passage of a strong backdoor cold front, temperatures in the northern Middle Atlantic region were around 20°-30° cooler than yesterday's highs. The heat continued from Philadelphia and southward.

Following overnight showers and thundershowers, tomorrow will be warmer again with readings returning to the upper 70s and at least lower 80s in much of the northern Middle Atlantic region. However, a cold front will trigger thunderstorms, some of which can be strong. Afterward, a period of more seasonable temperatures will follow.

During the closing week of May, the MJO moved through Phase 6 with an amplitude as high as 1.909. The only case with an MJO passage through Phase 6 with an amplitude of 1.500 or above during that timeframe was 1998. In 1998, the second half of June was noticeably warmer than the first half. The MJO's ongoing progression and the state of Atlantic blocking could impact the outcome for the second half of June.

The ECMWF seasonal forecast indicates that the summer will be warmer than normal throughout the region and across much of North America. Based on how the pattern has been evolving during the spring transition to summer, it is more likely than not that the warmest anomalies of the summer will likely occur in July and August with June being the coolest of the three months in the Northeast.

The ENSO Region 1+2 anomaly was -1.1°C and the Region 3.4 anomaly was -1.0°C for the week centered around May 25. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -1.55°C and the ENSO Region 3.4 anomaly has averaged -1.08°C. La Niña conditions will likely persist through the summer.

The SOI was -4.64 today.

The preliminary Arctic Oscillation (AO) was -2.641 today. That breaks the previous record low of -1.956 from 1975.

On May 30 the MJO was in Phase 7 at an amplitude of 2.035 (RMM). The May 29-adjusted amplitude was 1.909 (RMM).

 

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