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October 2021


Stormlover74
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16 minutes ago, bkviking said:

Pretty nice rain squall here in Ronkonkoma now. Tiny little thing on radar but had some gusto.  

I dont like it!  I need the sun to keep me warm! and get rid of this damn wind thats making my allergies act up today.  I thought it was supposed to be sunny and clear today, another major short term screw up!

 

 

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EPS weeklies keep the perma-ridge firmly planted over Eastern Canada for the rest of October.  So generally near to above normal temperatures. But we could see some slightly cooler days mixed in.  Still no big -10 departure days showing up as mild Pacific air will dominate with the strong -PNA +EPO.

Oct 18-25

218046A6-7215-413B-8A5F-458852907D50.thumb.png.3303149fb2e5c6eaa6e6d27310ed1362.png
 

Oct 25-31


4D61C719-34EF-40F0-94D2-08C72B7395A5.thumb.png.e3ff7c318e9c9b979366ed7ecdaf1b0b.png

 

 

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18 minutes ago, bluewave said:

EPS weeklies keep the perma-ridge firmly planted over Eastern Canada for the rest of October.  So generally near to above normal temperatures. But we could see some slightly cooler days mixed in.  Still no big -10 departure days showing up as mild Pacific air will dominate with the strong -PNA +EPO.

Oct 18-25

218046A6-7215-413B-8A5F-458852907D50.thumb.png.3303149fb2e5c6eaa6e6d27310ed1362.png
 

Oct 25-31


4D61C719-34EF-40F0-94D2-08C72B7395A5.thumb.png.e3ff7c318e9c9b979366ed7ecdaf1b0b.png

 

 

I see a lot of dreary, stagnant days with this pattern. Cooler highs with well AN lows. 

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4 hours ago, psv88 said:

Come...the park lol. lets use the park in the mid winter then too...

I like what someone recently said, that Kennedy is a good temperature representation for those going to the beach, Newark is good for those going to the city and Central Park a good representation for those going to the park. They all have their place. Considering there is no foliage on the trees during mid winter, why not use Central Park. Of course this time of year that foliage makes a difference for daytime highs.

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Today was the coolest day so far this season. New York City and Philadelphia recorded low temperatures in the 40s for the first time this season.

Tomorrow will be another cool day. After perhaps the coldest readings so far this season, the mercury will reach the lower and middle 60s across the area. Warmer air will return Wednesday. Another cool shot is likely for the weekend.

Elsewhere, Bismarck recorded its 154th 70° day. That broke the annual record of 153 days, which had been set in 2016. Caribou has yet to record its first freeze of the season. The previous latest first freeze occurred on October 17, 1970.

The MJO has now completed its passage through Phase 5 at a very high amplitude. During the 1991-2020 period, there were 6 cases with passage through Phase 5 with at least three days at an amplitude of 1.500 or above: 1998, 2000, 2004, 2010, 2017, and 2020. There was a strong signal for the second half of October to wind up warmer than normal (83%) cases in the New York City area. However, that signal broke down to a 50-50 split for the first 10 days of November. That hints at possible timing for a pattern transition depending on the pattern evolution and changes in the teleconnections.

Fall 2021 will likely be wetter to much wetter than normal in the northern Middle Atlantic region. Since 1869, there have been 9 August cases where New York City picked up 20.00" or more rainfall during the summer. Two thirds of those cases (and 4/5 of those with summer mean temperatures of 73.0° or above) had 17.00" or more fall precipitation in New York City. 2011 is probably the closest match in terms of precipitation and a nearly identical summer mean temperature. Mean fall precipitation for those 9 cases was 14.86". The median was 17.35". The 1991-2020 normal value is 12.27".

Following very wet July-September periods, winter (December-February) precipitation has typically been near or below normal. The most recent exception was winter 2018-19.

The ENSO Region 1+2 anomaly was -0.2°C and the Region 3.4 anomaly was -0.8°C for the week centered around October 13. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.15°C and the ENSO Region 3.4 anomaly has averaged -0.43°C. La Niña conditions will likely persist through at least mid-winter.

The SOI was +19.66 today.

The preliminary Arctic Oscillation (AO) figure was -1.464 today.

On October 16 the MJO was in Phase 6 at an amplitude of 0.589 (RMM). The October 15-adjusted amplitude was 0.967 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 93% probability that New York City will have a warmer than normal October (1991-2020 normal). October will likely finish with a mean temperature near 61.6° (3.7° above normal).

 

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28 minutes ago, donsutherland1 said:

Today was the coolest day so far this season. New York City and Philadelphia recorded low temperatures in the 40s for the first time this season.

Tomorrow will be another cool day. After perhaps the coldest readings so far this season, the mercury will reach the lower and middle 60s across the area. Warmer air will return Wednesday. Another cool shot is likely for the weekend.

Elsewhere, Bismarck recorded its 154th 70° day. That broke the annual record of 153 days, which had been set in 2016. Caribou has yet to record its first freeze of the season. The previous latest first freeze occurred on October 17, 1970.

The MJO has now completed its passage through Phase 5 at a very high amplitude. During the 1991-2020 period, there were 6 cases with passage through Phase 5 with at least three days at an amplitude of 1.500 or above: 1998, 2000, 2004, 2010, 2017, and 2020. There was a strong signal for the second half of October to wind up warmer than normal (83%) cases in the New York City area. However, that signal broke down to a 50-50 split for the first 10 days of November. That hints at possible timing for a pattern transition depending on the pattern evolution and changes in the teleconnections.

Fall 2021 will likely be wetter to much wetter than normal in the northern Middle Atlantic region. Since 1869, there have been 9 August cases where New York City picked up 20.00" or more rainfall during the summer. Two thirds of those cases (and 4/5 of those with summer mean temperatures of 73.0° or above) had 17.00" or more fall precipitation in New York City. 2011 is probably the closest match in terms of precipitation and a nearly identical summer mean temperature. Mean fall precipitation for those 9 cases was 14.86". The median was 17.35". The 1991-2020 normal value is 12.27".

Following very wet July-September periods, winter (December-February) precipitation has typically been near or below normal. The most recent exception was winter 2018-19.

The ENSO Region 1+2 anomaly was -0.2°C and the Region 3.4 anomaly was -0.8°C for the week centered around October 13. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.15°C and the ENSO Region 3.4 anomaly has averaged -0.43°C. La Niña conditions will likely persist through at least mid-winter.

The SOI was +19.66 today.

The preliminary Arctic Oscillation (AO) figure was -1.464 today.

On October 16 the MJO was in Phase 6 at an amplitude of 0.589 (RMM). The October 15-adjusted amplitude was 0.967 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 93% probability that New York City will have a warmer than normal October (1991-2020 normal). October will likely finish with a mean temperature near 61.6° (3.7° above normal).

 

Hey Don did JFK get down into the 40s and stay in the 50s today too?

 

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3 hours ago, donsutherland1 said:

A heavier shower moving out over the Long Island Sound resulted in a rainbow.

image.jpeg.10bfabec7faaa93f90a88028e1b3a644.jpeg

image.jpeg.020e45db13abe0f08d048e98a1283e92.jpeg

image.thumb.jpeg.ecb24425ceceb4b2d79e32bb0f9047a0.jpeg

image.jpeg.84fc9efeb3cea569077886cf0bd39a9b.jpeg

Beautiful Don!  I have heard because of the number of prismatic surfaces available near bodies of water, near places like the Long Island Sound you can actually see quadruple rainbows!  (Two double rainbows!)

 

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