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July 2020 General Discussions & Observations Thread


Rtd208
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8th day to reach 95° this month at LGA puts it in 2nd place for July. Newark airport has been getting stuck at 93°- 94° recently due to the local bay breeze.

LAGUARDIA NY Jul 22 Climate: Hi: 95 Lo: 78 Precip: 0.05 Snow: 0.0

NEWARK NJ Jul 22 Climate: Hi: 94 Lo: 78 Precip: Trace Snow: 0.0


 

Time Series Summary for LAGUARDIA AIRPORT, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Number of Days Max Temperature >= 95 
Monthly Max 
1 1999 11 101
2 2020 8 97
- 2012 7 101
- 1955 7 100
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This afternoon, the temperature reached 92° in Central Park. That was the fifth consecutive 90° or warmer day in Central Park, which is the longest heat wave there since August 11-15, 2016 when the mercury also reached 90° or above on five consecutive days. Strong thunderstorms moved through parts of area this evening.

The current predominantly warmer than normal pattern will likely persist through at least August, paving the way for a solidly warmer than normal summer throughout the region. Occasional short-lived cool shots remain possible. One or more heatwaves are likely in July across the region, including New York City.

The ENSO Region 1+2 anomaly was -1.5°C and the Region 3.4 anomaly was -0.2°C for the week centered around July 15. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.92°C and the ENSO Region 3.4 anomaly has averaged -0.22°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 last time the six-week moving average for ENSO Region 1+2 was as cold as the current figure during July or August occurred in 2013. Winter 2013-14 had neutral-cool ENSO conditions. January and February featured ENSO Region 3.4 anomalies that were -0.50°C or below.

The SOI was +13.54.

Today, the preliminary Arctic Oscillation (AO) figure was -0.506.

On July 21, the MJO was in Phase 1 at an amplitude of 1.615 (RMM). The July 20-adjusted amplitude was 1.469.

The MJO has been in either Phase 1 or Phase 2 for 52 consecutive days.

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.

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. 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 during the July 1-August 31 period.

Based on sensitivity analysis applied to the latest guidance, there is an implied 97% probability that New York City will have a warmer than normal July. July will likely finish with a mean temperature near 79.8°. The probability of an 80° mean temperature in July has increased in recent days to near 50%.

 

 

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7 minutes ago, Cfa said:

It’ll be interesting to see if KNYC can pull off 90+ tomorrow after all of that rain.

Wouldn’t be shocked if it comes in cooler than ISP.

Wow I just realize how much rain they got. Big difference a few miles north more like 0.1 to maybe .25 around here. We'll see.

NWS is close to have the next heat wave just connecting with this one making just one extra long heat wave. 2 89 degree days forecasted before another stretch of 90s. I doubt it, but it'd be interesting if LGA or EWR managed to pull that off.

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Outlook:Have dropped NW flow event here for Sat night-Sunday night, still possible in Maine?

Our next big convective event probably Tuesday the 28th or Wednesday the 29th (tho may see a hint of convection late Monday,).  For now thinking Tuesday.  

That event probably ends another 3+ day heat wave here (for sure Sunday-Tuesday), with 97F possible Mon or Tue along with HI ~100. Not expecting 100 air temp. Heat wave probably begins part of non marine influenced area this Saturday the 25th. 6A/23

 

 

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2nd longest 95 degree day streak at LGA of 5 days. First time since 1991 with a 5 day run. It was the first streak this long not to reach 100°. LGA only made to 97° this time. 1991 reached 101°...1953....102°....1948....103°. 
 

Number of Consecutive Days Max Temperature >= 95 
for LAGUARDIA AIRPORT, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Run Length
Ending Date
Last value also occurred in one or more previous years.
Period of record: 1939-10-07 to 2020-07-22
1 6 1953-09-02
2 5 2020-07-22
- 5 1991-07-21
- 5 1948-08-29
3 4 2016-08-14
- 4 2013-07-20
- 4 2010-07-07
- 4 2008-06-10
- 4 2006-08-03
- 4 2005-08-14

 

2020-07-18 95
2020-07-19 97
2020-07-20 97
2020-07-21 95
2020-07-22 95

 
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The next 8 days are averaging 86.5degs., or 8.5degs. AN.

Month to date is  +3.0[79.4].           Should be about  +4.5[81.3] by the 31st.

74*(91%RH) here at 6am, scattered overcast.     76*(90%RH) by 9am.         83*(80%RH) by 3pm.        86*(77%RH) at 4pm.

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Stuffy doesn't quite describe the air this morning, 73/72 and dense clouds with no air movement make for somewhat less than pleasant conditions for doing anything outside. I got .2" in the end of day rain yesterday so everything is soaked down making for a happy garden but not conducive to doing active outdoor things.

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76/73 and mostly cloudy.  Clouds stretch back to OH and pending on what can burn off today's highs may be capped in the 80s.  More storms may also fire pending on where and any heating when it clears.  Friday and Sat (somewhat onshore) we dry things out and stay warm near 90 before the next surge of heat arrives Sunday (7/26). Strong heat for 3 or 3/5 days Sun (7/26) through Tue (7/28)/Wed (7/29) before strong cold front.  850 temps surge to >18c Sun pm through Wed AM and may exceed 21C for a time on Mon and Tue.  This offers the next chance of triple digits but likely more widespread 95(+) EWR/LGA may get there with enough sun.  850MB temps surge is closer to the area as currently forecast'd this week.

Cooldown  as ridge migrates west into the Rockies and Plains 7/29-30 through about Aug 2/3  pushing a trouh into the east before more heat is ejecting into the region.  The early Aug period  may feature more strong S/SW flow and greater humidity  before strong heat returns beyond there.  Western Atlantic Ridge looks to retrograde in the long range with strong ridge building into the upper Plains/GL and tropical activity potentially heating up in the Gulf of Mexico.

 

 

 

 

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3 hours ago, wdrag said:

Outlook:Have dropped NW flow event here for Sat night-Sunday night, still possible in Maine?

Our next big convective event probably Tuesday the 28th or Wednesday the 29th (tho may see a hint of convection late Monday,).  For now thinking Tuesday.  

That event probably ends another 3+ day heat wave here (for sure Sunday-Tuesday), with 97F possible Mon or Tue along with HI ~100. Not expecting 100 air temp. Heat wave probably begins part of non marine influenced area this Saturday the 25th. 6A/23

 

 

That front coming next week Wed (ish) 7/29 could be some big widespread severe potential as it looks now.  Could be interesting tracking near record heat to some big time storms.  A real summer weather enthusiasts type of week.  Perhaps even add some tropical tracking at some point next week for the Gulf.

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Another top 10 warmest July around the area. Also notice the increasing number of 80° Julys at Philly, EWR, and LGA.

Time Series Summary for New Brunswick Area, NJ (ThreadEx) - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 1999 79.7 0
- 1955 79.7 0
2 2013 79.1 0
3 2010 79.0 0
4 1901 78.7 0
5 2011 78.5 0
6 2020 78.4 9
- 2012 78.4 0
7 2019 78.2 0
8 1949 78.0 0
9 2016 77.9 0
- 1900 77.9 0
10 1898 77.8 0
Time Series Summary for PHILADELPHIA INTL AP, PA - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2011 82.4 0
2 1994 82.1 0
3 2012 81.8 0
4 2010 81.7 0
5 2020 81.5 9
- 1995 81.5 0
6 1993 81.4 0
- 1955 81.4 0
7 2016 81.2 0
8 1999 81.1 0
9 2019 80.9 0
10 1988 80.7 0

 

Time Series Summary for NEWARK LIBERTY INTL AP, NJ - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2011 82.7 0
2 1993 82.5 0
3 2010 82.3 0
4 1994 81.9 0
5 2013 80.9 0
6 2012 80.8 0
- 1999 80.8 0
7 2019 80.6 0
8 1955 80.5 0
9 1988 80.4 0
10 2020 80.2 9
11 2002 80.0 0

 

Time Series Summary for LAGUARDIA AIRPORT, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2010 82.8 0
2 2020 82.2 9
3 1999 81.9 0
4 2019 81.5 0
5 2013 81.2 0
6 2016 81.1 0
7 1955 80.9 0
8 1966 80.8 0
9 2006 80.7 0
10 1994 80.6 0

 

Time Series Summary for IGOR I SIKORSKY MEMORIAL AIRPORT, CT - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2013 78.5 0
2 1994 78.4 0
3 2019 78.3 0
4 2010 78.0 0
5 2020 77.8 9
6 2011 77.6 0
7 2016 77.5 0
8 1955 77.4 0
9 2012 77.3 0
- 1999 77.3 0
10 1995 77.0 0

 

Time Series Summary for ISLIP-LI MACARTHUR AP, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 1999 78.6 0
2 2019 78.1 0
3 2013 78.0 0
- 2010 78.0 0
4 2011 77.6 0
5 1994 77.3 0
6 2020 77.0 9
7 2016 76.8 0
8 1966 76.3 0
9 2012 76.2 0
10 2008 75.9 0

 

Time Series Summary for ALBANY INTERNATIONAL AIRPORT, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2020 77.0 9
2 2018 76.5 0
- 1955 76.5 0
3 2019 76.2 0
4 2013 75.9 0
5 1949 75.3 0
6 1988 75.0 0
7 2011 74.9 0
- 2010 74.9 0
- 2006 74.9 0
8 2012 74.8 0
9 1952 74.7 0
10 1964 74.4 0

 

Time Series Summary for POUGHKEEPSIE AIRPORT, NY - Month of Jul
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2020 77.4 9
2 1955 77.2 0
3 2013 77.1 0
4 2016 76.5 0
5 2019 76.4 0
6 2010 76.0 0
- 1993 76.0 4
7 2011 75.8 0
- 1949 75.8 0
8 2012 75.7 0
9 2006 75.3 0
10 2005 75.1 0
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