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55 minutes ago, bluewave said:

The magnitude of the warm up next week will probably come down to the strength of the Greenland block. The runs with stronger blocking have more of a 50/50 low near New England. The 0z runs kept the strongest heat to our south. But a weaker block in future runs would allow more warming into our area.

New run strongest heat stays south

2FC934C4-31B5-422B-BC60-5DBA1260974D.thumb.png.b22d4f671b6dc2b13cc3fe3017e4740f.png

Old run had less blocking and more heat into our area


2B741D06-39DD-43EA-A30D-3924190B90BD.thumb.png.5f37d105a5ffb3bbeb51d25a7fcd2104.png

 

Oh look at that NW flow very nice

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Following the cold front's passage, a period of mainly dry conditions and somewhat cooler than normal temperatures will continue into the weekend. Afterward, there are growing model indications that a period of above to much above normal temperatures could develop.

In the long-range, August could wind up warmer to perhaps much warmer than normal based on the evolution of the MJO. The MJO was in Phase 1 with an amplitude between 1.500 and 2.000 on multiple days during the June 20-30 period. There were 8 prior cases similar to 2021. mean temperature for August was 77.1° following such cases. The 1991-20 mean temperature for was 76.0° for August. 88% of the August cases were warmer than the 1991-20 mean temperatures. Early prospects for a very warm second half of July have diminished on account of the MJO's having moved back into Phase 2 from Phase 3.

The ENSO Region 1+2 anomaly was +0.4°C and the Region 3.4 anomaly was -0.1°C for the week centered around July 14. For the past six weeks, the ENSO Region 1+2 anomaly has averaged 0.23°C and the ENSO Region 3.4 anomaly has averaged -0.12°C. Neutral ENSO conditions will likely prevail through August.

The SOI was +8.80 today.

The preliminary Arctic Oscillation (AO) figure was +0.938 today.

On July 19 the MJO was in Phase 5 at an amplitude of 1.718 (RMM). The July 18-adjusted amplitude was 1.711 (RMM).

In late April, the MJO moved through Phase 8 at an extreme amplitude (+3.000 or above). Only February 25, 1988 and March 18-19, 2015 had a higher amplitude at Phase 8. Both 1988 and 2015 went on to have an exceptionally warm July-August period. July-August 1988 had a mean temperature of 79.1°, which ranked 4th highest for that two-month period. July-August 2015 had a mean temperature of 78.9°, which ranked 5th highest for that two-month period. September 2015 was also the warmest September on record. The MJO's extreme passage through Phase 8 could provide the first hint of a hot summer.

Since 1896, 76% of years that saw Phoenix reach 115° or above in June, as occurred this year, had a warmer than July-August in the Middle Atlantic region. The ratio of top 30 July-August temperatures relative to bottom 30 temperatures was 6:1 in favor of the warmth. Overall, the ingredients continue to fall into place for a warmer than normal to potentially hot summer.

Based on sensitivity analysis applied to the latest guidance, there is an implied 64% probability that New York City will have a cooler than normal July (1991-2020 normal). July will likely finish with a mean temperature near 76.9° (0.6° below normal).

 

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There was a slight chill to the air when I left the island for work at 430. Great stretch of weather for those of us that work outside. A nice weather break before what I expect to be non stop tropical tracking. Even if we do not get a direct hit a hyper active season with multiple long track MDR formed majors is on the way. 

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The next 8 days are averaging 80degs.(71/90), or +3.

Month to date is  76.5[-1.0].       Should be 77.5[Normal] by the 30th.

NYC may not make 10", if the main 3 models are right.

Dallas may ace every test and get some bonus 'Degrees' till further notice-----starting Sat.     Dry too.

68*(80%RH) here at 6am, m .clear.        77* by 11am---but again, sun getting dimmed by the smoke.       83* by 4pm.

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This was the wettest first 3 weeks of July on record for many stations in the Northeast. So it’s no surprise that all the clouds and rain have kept the high temperatures down. It also resulted in warmer minimums across the board. So the the record heat at the end of June remains the strongest heat of the summer to date.

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064A93EE-6AF1-4C42-A47A-06F20FEE6D41.thumb.jpeg.2ecd0210850f14eed92e80b763f7ddf0.jpeg

 

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Morning thoughts…

Today will be partly sunny and refreshing. Humidity will be low and temperatures will rise to the lower and perhaps middle 80s in most of the region. Likely high temperatures around the region include:

New York City (Central Park): 82°

Newark: 87°

Philadelphia: 83°

Normals:

New York City: 30-Year: 85.2°; 15-Year: 86.4°

Newark: 30-Year: 87.1°; 15-Year: 88.5°

Philadelphia: 30-Year: 87.9°; 15-Year: 89.0°

Tomorrow will be partly sunny and pleasant.

In the Southwest, a retrograding system will produce significant monsoon rainfall, with the heaviest amounts falling between tomorrow night and Saturday morning. Both Phoenix and Tucson could pick up 0.50”-1.00” rain during this period.

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8 hours ago, cleetussnow said:

Pretty sure i am smelling smoke faintly in the air...anyone else?  Im up in westchester.

My neighbor has a fire going...which is okay if you live in a more rural area, but when you can spit and hit your neighbor's house, maybe a fire pit is not the most neighborly thing to have?

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On 7/20/2021 at 8:55 PM, SACRUS said:

No the Western/Plains ridge will expand east and the immense heat will spread into the region.  Strong heat (95+) with 850 MB temps ?18c will need to be tracked next week / end of July.  In the extreme it could progress into an Aug 2001 opening,

I was thinking about that- could August be our hottest month of the summer? And August 2001 was the last time it hit 100 in August in NYC

 

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57 minutes ago, nycwinter said:

what a glorious day comfortable temps low humidity i had a extra bounce in my step today..

Same.  Step down to winter.  Weak nina?  Going to try to hold off winter mode in my house until September but next week I am heading to NH to check out a camp for this winter so its on the brain heavily already.  

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Newark is on track for its first summer since 2010 with more 95° days in June than July. 

Monthly Number of Days Max Temperature >= 95 for NEWARK LIBERTY INTL AP, NJ
Click column heading to sort ascending, click again to sort descending.
Year
Jun
Jul
Aug
 
Mean 2 6 2  
2021 8 3 M  
2020 0 6 0  
2019 0 5 0  
2018 2 3 3  
2017 2 2 0  
2016 0 7 5  
2015 0 3 2  
2014 0 3 0  
2013 1 8 0  
2012 5 11 1  
2011 3 13 1  
2010 3 11 4  
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