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May 2020 General Discussions & Observations Thread


Rtd208
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Literally from now until hr 144 of the GFS on the 0z run, the wind into NYC is from some easterly direction per EWall site, from due east to NE, and at times pretty stiff. I wonder if there's some historical way to look up wind direction at JFK or another area airport/site to see if anything compares to this disaster of a spring. 

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The next 8 days are averaging 60degs., or about 4degs. BN.

Month to date is  -3.8[56.4].         Should be about  -3.9[57.6] by the 25th.

57* here at 6am.       60* by 9:30am.          T is variable here between 57*-61* by Noon.      63* tops at 5pm.

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We are on track for no 90 degree days this year right through Memorial Day. EPS keeps a UL over the East with strong high pressure east of New England. So it maintains a cooler easterly flow. It does briefly turn the winds SW later this week for a chance to make 80 degrees on Friday. But it looks like the 86 at Newark on the 15th will hold as the monthly high temperature for a while.

 

E5FB811D-028F-405E-8B2D-C87A3B60DC1D.thumb.png.8c96c3421c09bb9af1e50dd5074c7db3.png

0B9E476F-E3E1-40B5-B0F3-288E4CB080F7.thumb.png.db9014a0a80abb1095541f50a8810264.png

 

 

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1 hour ago, bluewave said:

We are on track for no 90 degree days this year right through Memorial Day. EPS keeps a UL over the East with strong high pressure east of New England. So it maintains a cooler easterly flow. It does briefly turn the winds SW later this week for a chance to make 80 degrees on Friday. But it looks like the 86 at Newark on the 15th will hold as the monthly high temperature for a while.

 

E5FB811D-028F-405E-8B2D-C87A3B60DC1D.thumb.png.8c96c3421c09bb9af1e50dd5074c7db3.png

0B9E476F-E3E1-40B5-B0F3-288E4CB080F7.thumb.png.db9014a0a80abb1095541f50a8810264.png

 

 

that would probably keep temperatures below average and May has a chance of averaging below 60.0...

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6 hours ago, jm1220 said:

Literally from now until hr 144 of the GFS on the 0z run, the wind into NYC is from some easterly direction per EWall site, from due east to NE, and at times pretty stiff. I wonder if there's some historical way to look up wind direction at JFK or another area airport/site to see if anything compares to this disaster of a spring. 

Looks dry tho

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Made it to 79 yesterday a nice change from the week prior with snow showers and low 40s. 

Another beauty out there today. Clouds holding off west of the region wit onshore flow building. Currently 61 with a NNE wind now. 

 

Still wouldnt completely  write off all meaningful rain yet this week but model trends are dryer as TS Arthur  has less impacts Mon/Tue.  Cut off is pushed way south and west towards TN/VA area through Thu before lifting back out Fri and Sat.  Think the warmup is delayed not denied as we get to Memorial Day and the following week for first shot at 90s.  We'll see how it trends.  I think a 2008 style switch to a very hot period is still in the cards.

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52 minutes ago, SACRUS said:

Made it to 79 yesterday a nice change from the week prior with snow showers and low 40s. 

Another beauty out there today. Clouds holding off west of the region wit onshore flow building. Currently 61 with a NNE wind now. 

 

Still wouldnt completely  write off all meaningful rain yet this week but model trends are dryer as TS Arthur  has less impacts Mon/Tue.  Cut off is pushed way south and west towards TN/VA area through Thu before lifting back out Fri and Sat.  Think the warmup is delayed not denied as we get to Memorial Day and the following week for first shot at 90s.  We'll see how it trends.  I think a 2008 style switch to a very hot period is still in the cards.

If we do see any rain late week/next weekend it really doesn't look like anything substantial at least not on the GFS. Nothing like the models were once showing. But I agree its something to keep an eye on.

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13 minutes ago, doncat said:

With any rain this week now looking very iffy...Been rather dry here with 1.08" so far.

Tough to get much rain as long as that blocking high remains anchored near New England.  Strong blocking in various locations has been the big story since April. As we can see below, models have been underestimating the blocking intensity beyond 5 days out. That’s why I won’t really believe a shift to warmer until it verifies under 120 hrs. The spring long range model warm up forecasts are the equivalent of the big snow was always 10 days away during the winter. 
 

New run

423891E5-823C-451C-9CCE-88491678FA93.thumb.png.af6dd5c87cbc2eac50ece9a113e3422e.png

Old run

78D85B66-6ECE-4F9E-A22B-84F176468620.thumb.png.4d383cac47a4c62097ea5a25c545892d.png


 

 

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31 minutes ago, dave0176 said:

Just a thought but what were the past summer JJA seasons like temp wise when both April and May ended up well below normal which seems more and more likely this year?

At EWR most recent examples lead to a cooler/wetter summer.  I do need to check 1991.  Not sure if we follow that trend yet.  Wetter likely a good bet overall again.

 

2003:
April:  -3.1
May: -3.9
Jun:  -3.2
Jul:  -0.3
Aug:  +1.8

1997:  Super Nino
April:  -2.1
May: -3.6
Jun:  -1.4
Jul :  -05
Aug:  -2.2
Sep : -1.4

1992:
April:  -2.7
May: -1.3
Jun:  +0.2
Jul:  -0.6
Aug:  -0.8
 



 

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23 minutes ago, SACRUS said:

At EWR most recent examples lead to a cooler/wetter summer.  I do need to check 1991.  Not sure if we follow that trend yet.  Wetter likely a good bet overall again.

 

2003:
April:  -3.1
May: -3.9
Jun:  -3.2
Jul:  -0.3
Aug:  +1.8

1997:  Super Nino
April:  -2.1
May: -3.6
Jun:  -1.4
Jul :  -05
Aug:  -2.2
Sep : -1.4

1992:
April:  -2.7
May: -1.3
Jun:  +0.2
Jul:  -0.6
Aug:  -0.8
 



 

1991 had the warmest May on record...none of the above years were developing la nina year...May 1992 had a heat wave...

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18 minutes ago, uncle W said:

1991 had the warmest May on record...none of the above years were developing la nina year...May 1992 had a heat wave...

Thank Unc.  I meant to write 1990. 1992 was Mt pinatubo effect.

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20 minutes ago, SnoSki14 said:

Really crappy for beaches though, only 50s

 

The ocean is still in the low 50’s. 
 

Jones Beach      N/A     52 N/A N/A SE13        N/A
Wantagh          N/A     57  48  72 SE13        N/A
NY Harb Entrance 1750            51 54  100/ 12/ 14 1025.3          3/ 4
20 S Fire Island 1750            51 53   90/ 12/ 14 1025.3          3/ 

 

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Tomorrow will be mainly cloudy with readings in the lower and middle 60s.

The probability of a wet week has diminished markedly in the region, as Arthur will very likely turn out to sea. Thus, moderate to significant rainfall will likely be confined to the Southeast coast and lower Middle Atlantic region.

The ENSO Region 1+2 anomaly was +0.2°C and the Region 3.4 anomaly was +0.2°C for the week centered around May 6. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.37°C and the ENSO Region 3.4 anomaly has averaged +0.52°C. Neutral and occasionally warm ENSO conditions will likely prevail through mid-May. ENSO Region anomalies, which cooled slightly during the last week of April, could continue a steady cooling during May.

The SOI had an increased tendency for positive values during April. During this month, the SOI was positive on 17 (57%) days. During the February-March period, the SOI was positive on 38% days. This shift in tendencies may further reinforce or reflect the idea that ENSO region anomalies could begin to cool.

The SOI was +11.51 today.

Today, the preliminary Arctic Oscillation (AO) figure was -1.018.

On May 16, the MJO was in Phase 2 at an amplitude of 1.465 (RMM). The May 15-adjusted amplitude was 1.055.

Since 1950, there were two cases where the April AO averaged +0.500 or above while the May AO averaged -0.500 or below: 1952 and 1954. Both cases featured a warmer than normal June. The flip to a warm June was particularly notable in 1954. Such an outcome suggests that the prevailing pattern could change toward one that would favor a warm June and perhaps warm summer.

Based on sensitivity analysis applied to the latest guidance, there is an implied 78% probability that New York City will have a cooler than normal May. May will likely finish with a mean temperature near 60.6°.

 

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34 minutes ago, SnoSki14 said:

I think the first 90s will have to wait till June. There's a ton of easterly flow down the pipe. 

I'm fine with that. The 90s could hold off till July for all I care. 

This week actually looks ok-yeah might be cloudy at times and cooler than ave-but given what it could have been I'll take it.

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Nobody but us knows "what it could have been", all they know is it's not really warm yet and sort of fits the melancholy mood that permeates life in the metro area at the moment. I'm good with no 90's for the whole year if you want the truth, I just don't want another wet one. Wet enough that the garden does well but dry enough to keep the skeeter population in check because there's limited standing water for them to breed in.

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The next 8 days are averaging 61.5degs., or 3.5degs. BN.

Month to date is  -3.7[56.7].          Should be about  -3.6[58.3] by the 26th.

BN 2mT's, despite AN 500mb, 850mb parameters throughout 8 days-----due to those E/NE 10m winds.

56* here at 6am.        60* by 9am.        65* by Noon.      68* by 2pm.         69* by 6pm.      62* by 9pm.

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