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June 2020 General Discussions & Observations Thread


Rtd208
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We need some help from any convection on Saturday to make it out of the top 10 driest Junes.

 

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Jun
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Total Precipitation 
Missing Count
1 1949 0.02 0
2 1999 0.59 0
3 2020 0.98 6
- 1894 0.98 0
4 1901 1.00 0
5 1880 1.14 0
6 1966 1.17 0
7 1898 1.25 0
8 1906 1.26 0
9 1965 1.27 0
- 1908 1.27 0
10 1873 1.28 0

 

Time Series Summary for LAGUARDIA AIRPORT, NY - Month of Jun
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Total Precipitation 
Missing Count
1 1949 0.03 0
2 1999 0.50 0
3 2020 0.76 6
4 1988 0.94 0
5 1965 1.14 0
6 1978 1.30 0
7 1986 1.43 0
- 1963 1.43 0
8 1966 1.44 0
9 1954 1.48 0
10 1979 1.51 0
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1 hour ago, gravitylover said:

Our luck it'll come hard and fast and just run off.

Exactly. What we need is an actual low to track slowly over us, with onshore flow and stratiform rains. A summer nor’easter type deal where it rains light to moderate for a couple days. When the ground gets super dry it hardens up and runs off very easily 

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1 minute ago, LongBeachSurfFreak said:

Exactly. What we need is an actual low to track slowly over us, with onshore flow and stratiform rains. A summer nor’easter type deal where it rains light to moderate for a couple days. When the ground gets super dry it hardens up and runs off very easily 

A tropical storm that stalls over Long Island would be ideal.

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20 minutes ago, LongBeachSurfFreak said:

Exactly. What we need is an actual low to track slowly over us, with onshore flow and stratiform rains. A summer nor’easter type deal where it rains light to moderate for a couple days. When the ground gets super dry it hardens up and runs off very easily 

When's the last time we had something like that? 1987?

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Tomorrow will be another similar day as today. Temperatures should again climb into the middle and perhaps even upper 80s.

A sustained generally warmer than normal pattern is now in place. That pattern will likely persist through at least July and August, paving the way for a warmer than normal summer throughout the region. Initially, extreme heat is unlikely, but that could change in July, especially if the emerging drought continues to deepen. One or more heatwaves are likely in July across the region.

The CFSv2, which is now moving into its skillful range for its monthly forecasts, and the EPS weeklies favor a warmer than normal July across the region.

The ENSO Region 1+2 anomaly was -0.5°C and the Region 3.4 anomaly was -0.4°C for the week centered around June 17. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.32°C and the ENSO Region 3.4 anomaly has averaged -0.43°C. 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 in recent weeks.

The SOI was -3.87 today.

Today, the preliminary Arctic Oscillation (AO) figure was -0.258.

On June 24, the MJO was in Phase 1 at an amplitude of 1.818 (RMM). The June 23-adjusted amplitude was 1.818.

Last year, the MJO went through a very strong passage through Phase 1 during the closing days of May. About four weeks later, a warmer than normal pattern locked in and predominated through early autumn.

This year, the MJO was in Phase 1 for 3 consecutive days with an amplitude of 1.500 or above during the June 1-3 period. Since 1981, there were four such cases that saw the MJO meet or exceed those thresholds during the June 1-10 period: 2002, 2006, 2007, and 2015. While the four cases were evenly split between cooler and warmer than normal during the second half of June, 3 of those 4 cases saw a warmer to much warmer than normal July. This could be an early indication that a summer that will start with near normal temperatures overall (June) could turn warmer than normal afterward.

Last year, the SOI fell to -42.04 on June 22 when the MJO was in Phase 6. This year, the SOI plunged below -46.68 on June 5, its lowest level in more than three years. The dramatic plunge in the SOI could be the proverbial spark that kicks off a sequence of events leading to the development of a sustained warmer than normal period. Taking into consideration the MJO, that transition could begin some time during the closing 10 days of June. Further, the cases that saw both the MJO and SOI thresholds satisfied generally saw 10-20 days where the temperature reached or exceeded 90° in New York City.

Just as had been the case last year, July and August could feature warm anomalies in the East. July-August 2019 saw 13 days on which the temperature reached or exceeded 90° in New York City.

Based on sensitivity analysis applied to the latest guidance, there is an implied 98% probability that New York City will have a warmer than normal June. June will likely finish with a mean temperature near 73.8°.

 

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The last 5 days of June are averaging 77.5degs., or 3degs. AN.

Month to date is  +2.3[73.1].        June should end at  +2.4[73.8].

First 10 days of July are averaging 86degs., or 10degs. AN---on the GFS.

70* here at 6am, some cirrus.          76* by Noon, cumulus around.

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Driest Jan1st to June 25th in NYC since 1995.

Time Series Summary for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Ending Date
Total Precipitation Jan 1 to Jun 25
Missing Count
2020-06-25 15.37 0
2019-06-25 27.28 0
2018-06-25 24.23 0
2017-06-25 27.36 0
2016-06-25 17.36 0
2015-06-25 19.27 0
2014-06-25 28.35 0
2013-06-25 29.03 0
2012-06-25 17.26 0
2011-06-25 28.20 0
2010-06-25 27.65 0
2009-06-25 24.16 0
2008-06-25 23.26 0
2007-06-25 31.72 0
2006-06-25 25.73 0
2005-06-25 21.19 0
2004-06-25 20.36 0
2003-06-25 28.23 0
2002-06-25 16.90 0
2001-06-25 21.49 0
2000-06-25 21.00 0
1999-06-25 20.89 0
1998-06-25 35.18 0
1997-06-25 19.20 0
1996-06-25 25.62 0
1995-06-25 15.28 0
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47 minutes ago, gravitylover said:

Do you folks have any idea just how nice it is/was outside early this morning? Top 5 for the year! ...and you missed it :)

I was out, G.L., hoping I’d make it to my first cup of coffee. Beautiful morning even bu UHI inner city standards. As always ....

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24 minutes ago, nycwinter said:

more humid this morning then it was yesterday...morning..

Quite the opposite here, the air is crystally clear and it was September morn' cool and calm with the birds tweeting away as happily as could be while the buzzy flying critters were pollinating the garden. If I could order up another 75 or so of these for this year I surely would.

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Storms missed to the south along the Jersey shore last night.  Clouds did limit any widespread 90s on Wed.  Warm and dry today and more upper 80s to isolated 90 degree readings (enhanced by dryness). Dew temps up a tinge near 60 now, so not as comfortable as Wed/THu.   Weekend is warm and only clouds and storms timing could limit Sat from being the hottest day of the season so far.  Storms come through Sat evening and hope to bring more widespread rain and downpours to the areas. Things should clear out Sunday  with temps again near 90 with isolated storms.

By Sunday evening a weakness in the ridge leads to trough to build down and close off over the northeast 6/30 - 7/3  Id expect guidance to show more showers and storms in this period with the position of the ULL vs prior occurrences in late May and last week.. GFS and ECM push the ULL offshore by July 4th.  Some onshore flow still lingering into the 4th/5th but looks dry for the holiday weekend.  Once the flow goes NW/ W the heat is on 7/5-6ish  into the following week and beyond.  Ridge is flatter and overall warm to hot pattern looks to ensue.  

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9 minutes ago, SACRUS said:

Storms missed to the south along the Jersey shore last night.  Clouds did limit any widespread 90s on Wed.  Warm and dry today and more upper 80s to isolated 90 degree readings (enhanced by dryness). Dew temps up a tinge near 60 now, so not as comfortable as Wed/THu.   Weekend is warm and only clouds and storms timing could limit Sat from being the hottest day of the season so far.  Storms come through Sat evening and hope to bring more widespread rain and downpours to the areas. Things should clear out Sunday  with temps again near 90 with isolated storms.

By Sunday evening a weakness in the ridge leads to trough to build down and close off over the northeast 6/30 - 7/3  Id expect guidance to show more showers and storms in this period with the position of the ULL vs prior occurrences in late May and last week.. GFS and ECM push the ULL offshore by July 4th.  Some onshore flow still lingering into the 4th/5th but looks dry for the holiday weekend.  Once the flow goes NW/ W the heat is on 7/5-6ish  into the following week and beyond.  Ridge is flatter and overall warm to hot pattern looks to ensue.  

We need the rain badly so I will gladly take it even if that means on the 4th

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3 minutes ago, Allsnow said:

We need the rain badly so I will gladly take it even if that means on the 4th

Hope to add something meaningful tomorrow and id expect through the week with the position of the ULL more QPF to shop up on guidance and hope it materializes to actual precip.
 

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2 hours ago, SACRUS said:

Once the flow goes NW/ W the heat is on 7/5-6ish  into the following week and beyond.  Ridge is flatter and overall warm to hot pattern looks to ensue.  

I don't see anything beyond what we've been seeing so far. Probably just upper 80s to low 90s. 

Nothing crazy for July. 2010-2011 ain't walking through that door. 

The strongest heat will likely be to our north this season.

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