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October 2021


Stormlover74
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1 hour ago, forkyfork said:

quibbling over a high below 60 in mid october, lol. on oct 16 1944 ewr had a low of 31 and in 2009 the high was 46. today is the 13th day in a row with lows above 60...

Yes that's how pathetic things have been. 

I think it'll be easier if we just recognize it's gonna be like this every "fall". 

Our climate is warm & wet. Time to deal with it 

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46 minutes ago, SnoSki14 said:

Yes that's how pathetic things have been. 

I think it'll be easier if we just recognize it's gonna be like this every "fall". 

Our climate is warm & wet. Time to deal with it 

This cool down is down to 3 days. That is the funny thing after all that.

Tues thru Friday look down right warm

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16 minutes ago, jfklganyc said:

This cool down is down to 3 days. That is the funny thing after all that.

Tues thru Friday look down right warm

Yep. Tuesday upper 60s to near 70. Wednesday and thursday mid 70s, and near 70 on friday. A very warm week except for 1 normal day on monday. And the cooldown next weekend only takes us back down to near normal.

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2 hours ago, binbisso said:

I'm a winter weather lover however  We are far from Winter.   You're crazy if you haven't loved the weather the last 6 weeks.  highs in the seventies and lows around 60 perfect. it could stay this way till Thanksgiving for all I care then we can flip

 

I’d prefer less humidity.  Be nice to open up the windows at night without the clamminess.

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A  Nothing Burger  when it gets here?......Especially with the sun already very low by say 6pm.      Maybe some action aloft gives us a show.

As far as the T's for the rest of month starting tomorrow they are averaging  >>>>     56*(50/62) or just about Normal.       So Oct. may end at   +2.5 to +3.0.

1634406360-5FVaW2CFQL8.png

 

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3 hours ago, jfklganyc said:

This cool down is down to 3 days. That is the funny thing after all that.

Tues thru Friday look down right warm

It does get warmer this week but it'll be different than the last few days.  Lows will be a little more seasonable and plus the dewpoint will not be in the 60s like today.

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On 9/17/2021 at 12:24 PM, bluewave said:

It’s always interesting to see how the EPS weeklies compare with the SEAS5 seasonal forecast. The Euro seasonal was picking up on the October blocking potential from the forecast issued back in July. South based blocks can still have above normal temperatures in the Northeast like we saw last winter. So the latitude of the block is important.

Early July forecast for October

seems like it did a good job
Composite Plot

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18 minutes ago, Will - Rutgers said:

it's 66 outside, my thermostat is about 72, and i feel pretty cool.  global warming has broken my biological thermometer

Good evening Will. My biological thermometer hasn’t gone up in quite a awhile, global warming notwithstanding. As always …… 

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Some additional showers are likely, especially before midnight. Behind the frontal passage responsible for the showers and earlier thunderstorms, readings will return to near normal levels tomorrow and Monday. Warmer air will likely return near the middle of next week.

Newark reached 70° for the 170th time this year. As a result, 2021 is now tied with 2007 for the 4th most days on record. Newark also reached 80° for the 115th time this year. That is the 2nd highest number of such days.

At 11:59 pm yesterday, Bismarck saw the temperature dip to 32° under clear skies and a calm wind. That is the latest first freeze on record for Bismarck. The old record was October 14, 2008.

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.

La Niña conditions have now developed. The ENSO Region 1+2 anomaly was +0.1°C and the Region 3.4 anomaly was -0.7°C for the week centered around October 6. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.08°C and the ENSO Region 3.4 anomaly has averaged -0.35°C. La Niña conditions will likely persist through at least mid-winter.

The SOI was +28.43 today.

The preliminary Arctic Oscillation (AO) figure was -0.788 today.

On October 14 the MJO was in Phase 6 at an amplitude of 1.416 (RMM). The October 13-adjusted amplitude was 1.686 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 94% probability that New York City will have a warmer than normal October (1991-2020 normal). October will likely finish with a mean temperature near 61.9° (4.0° above normal).

 

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