Jump to content
  • Member Statistics

    19,001
    Total Members
    49,013
    Most Online
    loganboehmewx
    Newest Member
    loganboehmewx
    Joined

October 2021


Stormlover74
 Share

Recommended Posts

1 hour ago, Brian5671 said:

Agreed-cold Novembers don't do alot in these parts....(except maybe the last 5 days of the month)

 

1 hour ago, Stormlover74 said:

We had all that wasted cold in November 2019 though we did get a minor slop event in early December before we flipped to warm

 

1 hour ago, jfklganyc said:

Yeah that’s what I’m thinking too. We’ve seen this episode before. Warm oct-cold 6 weeks to start nov-warm up just in time for mid december.

 

 

Yup. We have experienced enough wasted cold in November to last a lifetime. A warm October/November doesn’t make me nervous at all for the upcoming winter. 

  • Like 1
Link to comment
Share on other sites

November 1959 had what is called wasted cold and you could have said that the first half of Dec 59 but a snowstorm and cold wave just before Christmas changed all that...there was a huge block in Nov. 59...I think the strongest ever...the snowstorm and cold wave came with little or no blocking...winters with a -5sd or lower usually were very cold, snowy or both...March 1960 had a historic snowstorm ( a blizzard by todays standards )...

  • Like 1
  • Thanks 2
Link to comment
Share on other sites

1 hour ago, forkyfork said:

maybe the thing that beefs up our snowstorms is also causing a bunch of months to be warm

Yeah, that’s why we have been getting so much record warmth before or after our best snowstorms since the super El Niño in 15-16. Last December it was 60s before and after our best December snowstorm and -AO in years. May 2020 tied for our latest trace of snow following one of our warmest winters. 17-18 featured 30” of snow in March on Long Island after Newark hit 80° in late February. We had the blizzard in February 2017 a day after the 60s. 15-16 went  +13.3 in December followed by the 30” snowstorm in January and new #1 NYC snowstorm. Even before the super El Niño, we were getting occasional patterns like this. Nemo in February 2013 following the very warm first few months of winter. The 11-12 lack of winter after the record snowstorm in late October. The February 2006 NYC #2 snow following one our warmest Januaries on record. The late winter 2005 snowstorms following one of the warmest first 2 weeks of January on record. This is a sea level version of spring in the Rockies where snow and warmth have often occurred together. 

  • Like 3
  • Thanks 3
Link to comment
Share on other sites

Seems I saw this cartoon before.      The 46 day cartoon---OOPS!......I mean Outlook----looks the same.         There are attempts at Normal 7 day periods centered on Oct. 23 and some undercutting cooler air trying to get in from the south and southwest during the period of November covered by the full run.

1636675200-EKagbG2gfBE.png

Link to comment
Share on other sites

Under variably cloudy skies, readings reached the upper 60s and lower 70s today. Newark reached 70° for the 166th time this year. As a result, 2021 now as the 11th highest figure on record.

Tomorrow will likely be a bit warmer. Sunshine and much above normal temperatures are likely Thursday and Friday. Saturday will be another very warm day, but some showers are even a thundershower are possible as a strong cold front moves across the region. Behind the frontal passage, readings will return to near normal levels.

The MJO is currently passing 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 evoluton 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 +0.1°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. Neutral ENSO conditions will likely yield to La Niña conditions later this month.

The SOI was +12.96 today.

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

On October 10 the MJO was in Phase 5 at an amplitude of 1.864 (RMM). The October 9-adjusted amplitude was 1.704 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 90% 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).

 

Link to comment
Share on other sites

23 minutes ago, psv88 said:

My low for the season is 46. This is the latest that my location has failed to drop below 46 since i have been here (6 years). Most years have dipped into the 30s by now, and some below freezing. 

The bugs are loving it.

I still hear katydids every night. 

  • Like 2
Link to comment
Share on other sites

Morning thoughts…

It will be partly cloudy and milder. High temperatures will likely reach the lower and middle 70s in most of the region. Likely high temperatures around the region include:

New York City (Central Park): 71°

Newark: 75°

Philadelphia: 75°

Normals:

New York City: 30-Year: 65.5°; 15-Year: 66.5°

Newark: 30-Year: 67.0°; 15-Year: 68.3°

Philadelphia: 30-Year: 68.3°; 15-Year: 69.2° 

A generally warmer than normal regime will continue into the weekend before a strong cold moves across the region.

  • Like 1
Link to comment
Share on other sites

20 hours ago, bluewave said:

Late season severe possible this  weekend as Pamela gets absorbed by the rapidly deepening Great Lakes low.

 

EEE57FF6-F9DD-4C48-9DA5-F4FE981ACC11.thumb.png.3efebc18448e74e3aa8dbe122a4d2dde.png
 

453CC1AF-12E2-4E39-A18C-C41687A3A518.png.77f567a69cb7b11b0c3eabf77312e1a7.png

 

 

Pacific systems dont get much attention in these parts, this is the first time I've seen such a system get attention here.

Looks like the Atlantic is shut down for business?  I'm shocked that the GOM has been so quiet, it's usually good for a late season event or two.

 

Link to comment
Share on other sites

The next 8 days are averaging 66degs.(59/73), or +7.

Month to date is  65.2[+3.8].      Could be 65.5[+5.1] by the 21st.

GEFS still has no BN 'Travelling 5-Day' period showing for us and seems to be warming again as October is ending.

Reached 73 here yesterday.

Today:   73-77, w. to sw. wind, clouds.

65*(85%RH) here at 6am.     68* at Noon.

 

Link to comment
Share on other sites

9 hours ago, psv88 said:

My low for the season is 46. This is the latest that my location has failed to drop below 46 since i have been here (6 years). Most years have dipped into the 30s by now, and some below freezing. 

The bugs are loving it.

The area around ISP is headed for the latest first 45° of fall on record. The previous latest was set back in 2017. But you can see all the late dates in recent years with the delayed fall patterns.  The recent average first date from 2010 to 2020 was 10-3. From 1964 to 1980 the average was 10 days earlier around 9-23.
 

First/Last Summary for ISLIP-LI MACARTHUR AP, NY
Each section contains date and year of occurrence, value on that date.
Click column heading to sort ascending, click again to sort descending.
Year
Last
Value
First
Value
Difference
2017 05-21 (2017) 43 10-17 (2017) 40 148
1983 05-28 (1983) 45 10-16 (1983) 43 140
2018 05-09 (2018) 44 10-13 (2018) 42 156
2007 05-18 (2007) 45 10-13 (2007) 39 147
1967 06-01 (1967) 42 10-12 (1967) 45 132
2016 05-20 (2016) 45 10-11 (2016) 39 143
2015 05-03 (2015) 44 10-10 (2015) 44 159

 

Link to comment
Share on other sites

58 minutes ago, forkyfork said:

when was the last sept-oct-nov that averaged below normal? 

2013 when you average out all the local stations. Before that it was 2000. But notice how weak the cold departures were even on those two years. 

2013….NYC 5 boroughs and Long Island SON average departure -0.3…….Northern NJ…..-0.1

2000….-0.6…..-0.2

 

NY climate division 4

14BD99D9-7068-495B-A866-A1016AF54B2B.thumb.jpeg.74b904d05b74f5a114764d276ee392a8.jpeg

 

NJ climate division 1

 

2C8229B6-5FE0-402D-ABF6-BBA50914DE93.thumb.jpeg.6548b652df1759cb593fa373b8b22b3b.jpeg

Link to comment
Share on other sites

5 minutes ago, bluewave said:

That long range forecast November blocking pattern on the weeklies looks like it’s part of the very early disruption  of the SPV. 
 

So, if we were to have a severely disrupted vortex in October or November, it’s possible this would help a stronger vortex develop aloft right around peak cooling rate – thus giving a chance for a stronger vortex to dominate during mid-winter. [6/9]

Also, tropospheric continental cold air masses have yet to fully develop like they are in mid-late winter. So, if you like cold weather, a vortex disruption earlier in the season could be wasteful, as it might preclude one happening later when cold reserves are maximised. [7/9]

2016/17 began with a spectacularly weak vortex, but that terminated quickly in Dec and the vortex became very strong, as wave activity declined during the disruption. Subsequently, the back half of the winter saw several minor warmings. [8/9]

Maybe but it can also never gain strength.  Allsnow is right , cold weather is wasteful  now.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...