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April 2024


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9 minutes ago, jm1220 said:

I don’t remember that storm at all and I would’ve cursed it to no end seeing Boston and I-90 get buried while I maybe got my 1-2” table scraps. 

Upton went all in here with blizzard conditions and big totals....most of the storm was heavy rain during the day...then we got a dryslot of sorts with some light garbage snows...we did get accumulating snow overnight mainly on the grass, ended up with 3-4 inches of slop. Hunter Mtn had 3 feet from what I remember

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1 minute ago, Brian5671 said:

Upton went all in here with blizzard conditions and big totals....most of the storm was heavy rain during the day...then we got a dryslot of sorts with some light garbage snows...we did get accumulating snow overnight mainly on the grass, ended up with 3-4 inches of slop

The upper low probably trended north at the very end like these tend to and I’m sure especially then with lousier computer models. 

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4 hours ago, MJO812 said:

This needed to happen in February 

nao.gefs.sprd2.png

 - This 3/29 0Z GEFS run’s mean NAO prediction of ~-1.75 for 3/31 is ~tied for the daily record low NAO for all of March (records go back to 1950)! The current March record is -1.75 (3/22/1980). It will also easily beat the current record low for March 31 of -1.3 (1975).

- This run is predicting the lowest NAO to be ~-1.95 to -2.00 (on 4/1). Should that verify closely, it would be a record low NAO (back to 1950) for the entire period covering Feb 15th through April 7th! It will also obliterate the current record low for April 1 of -1.2 (1975).

- This run implies there will be daily record low NAOs March 31-April 2nd and possible daily record lows April 3rd-5th.

- The progged very strong ~April 4th nor’easter is tied to this very strong -NAO.

 

Daily NAO back to 1950:

https://ftp.cpc.ncep.noaa.gov/cwlinks/norm.daily.nao.cdas.z500.19500101_current.csv

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1 hour ago, Brian5671 said:

Upton went all in here with blizzard conditions and big totals....most of the storm was heavy rain during the day...then we got a dryslot of sorts with some light garbage snows...we did get accumulating snow overnight mainly on the grass, ended up with 3-4 inches of slop. Hunter Mtn had 3 feet from what I remember

I was living in Armonk at the time and we got around 11 inches. But accumulations dropped rapidly southward as Westchester airport, only a few miles south was at 6-7 inches if I recall. 

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4 hours ago, Typhoon Tip said:

Brooklyn' or Drag      perhaps consider a thread for this for early awareness.

pushing -3 ( perhaps - 4! ) SD anomaly ... trending under Long Island in recent guidance; this is historic/inference quite significant, and here there is enough cold.

Primarily this is an interior CT and points NE emerging threat, but the wholesale manifold of synoptic metrics are not excluding this reaching back SW as a major blue snow player, either.

Super synoptic considerations have shown remarkable continuity ( -NAO over the western limb) with apparent highly coupled trough.  These REX couplets tend to operate within themselves and often disconnected from the telecon tapestry of the surrounding hemisphere where they set up this coherently.

how does this setup compare to April 6, 1982 ? - similarities and or differences ......

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6 minutes ago, NEG NAO said:

how does this setup compare to April 6, 1982 ? - similarities and or differences ......

Not close since that had a 100 year Arctic outbreak in April which was the last time NYC set 3 consecutive low temperatures. It was also the last time NYC had afternoon temperatures in April in the 20s. That was the tail end of the mini ice age we had in the late 70s before our temperatures really began to take off.

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Just now, bluewave said:

Not close since that had a 100 year Arctic outbreak in April which was the last time NYC set 3 consecutive low temperatures. 

no similarities ? is a 100 year Arctic outbreak needed this time around ?

 

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41 minutes ago, bluewave said:

Yeah, that tracked right over the area and set our new record lowest pressure in April. This one looks like the lowest pressure will be closer to Cape Cod from the model forecasts. That storm was so intense that the model forecasts from 8 days out actually did a pretty good job. We should switch to a much warmer and drier pattern for the 2nd week of April.

https://www.wpc.ncep.noaa.gov/research/roth/SLPrecords.html

 

D3CC701F-2A44-4527-9F93-4F6A4B60ED13.thumb.gif.650a952acf7efee7fa92e6babe9f6ded.gif


10494120-1F64-47C4-8E45-F7B2CE3EB434.thumb.gif.cbadcfd685897df70514fcfdd1392791.gif

 

I wonder if the switch to a much warmer pattern is a precursor to a very hot summer.

Are you aware that our three rainiest Marches (all with 10 inches or more of rain) resulted in three of our hottest summers -- 2010, 1983 and 1980!  We're at number 4 currently.

 

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10 minutes ago, bluewave said:

Not close since that had a 100 year Arctic outbreak in April which was the last time NYC set 3 consecutive low temperatures. It was also the last time NYC had afternoon temperatures in April in the 20s. That was the tail end of the mini ice age we had in the late 70s before our temperatures really began to take off.

it was very cold that entire week and we had a second mini snowstorm the following weekend!  JFK got an inch of snow in that during the afternoon.

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29 minutes ago, NEG NAO said:

how does this setup compare to April 6, 1982 ? - similarities and or differences ......

 There was also a strong -NAO then but not as strong as what’s coming.

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30 minutes ago, NEG NAO said:

no similarities ? is a 100 year Arctic outbreak needed this time around ?

 

Our climate is much too warm now to ever see Arctic cold like that again in April. 

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Just now, MJO812 said:

So that means we will never see brutally cold air again ?

Our climate has warmed way too much to ever see April cold like that again.

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Apr
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 1923 12 0
2 1874 20 0
3 1982 21 0
- 1881 21 0
4 1919 22 0
- 1875 22 1
5 1995 23 0
- 1954 23 0

 

 

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Apr
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Max Temperature 
Missing Count
1 1982 30 0
- 1881 30 0
2 1879 32 0
- 1875 32 1

3

1938 33 0
4 1944 34 0
- 1943 34 0
- 1896 34 0
- 1874 34 0
5 1940 35 0
- 1918 35 0
- 1911 35 0
- 1870 35 1

 

 

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Just now, bluewave said:

Our climate has warmed way too much to ever see April cold like that again.

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Apr
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 1923 12 0
2 1874 20 0
3 1982 21 0
- 1881 21 0
4 1919 22 0
- 1875 22 1
5 1995 23 0
- 1954 23 0

 

 

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Apr
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Max Temperature 
Missing Count
1 1982 30 0
- 1881 30 0
2 1879 32 0
- 1875 32 1

3

1938 33 0
4 1944 34 0
- 1943 34 0
- 1896 34 0
- 1874 34 0
5 1940 35 0
- 1918 35 0
- 1911 35 0
- 1870 35 1

 

 

I think it was in the teens in Newark in 1982.

Hey Chris, can you go back to 1995, didn't we have an arctic shot in April that year with clear skies?

The high was around 37 and the low was around 23 (average mid January temps), and it was windy and sunny. 

 

Maybe the temps would have stayed in the 20s that day if we had snow that day.

 

The other cold April day I remember was in 2016 when we had temps in the 30s with snow to our east near Cape Cod.  Very windy that day too.

 

In 2003 we had three straight days in the 30s after the snowstorm.

 

I think we warmed up quickly in 1996 and 2018 after those snowstorms.

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4 minutes ago, bluewave said:

Our climate has warmed way too much to ever see April cold like that again.

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Apr
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Min Temperature 
Missing Count
1 1923 12 0
2 1874 20 0
3 1982 21 0
- 1881 21 0
4 1919 22 0
- 1875 22 1
5 1995 23 0
- 1954 23 0

 

 

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Apr
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Lowest Max Temperature 
Missing Count
1 1982 30 0
- 1881 30 0
2 1879 32 0
- 1875 32 1

3

1938 33 0
4 1944 34 0
- 1943 34 0
- 1896 34 0
- 1874 34 0
5 1940 35 0
- 1918 35 0
- 1911 35 0
- 1870 35 1

 

 

that low of 12 in 1923 is pretty amazing!  how come it's not on the lowest max list-- did it get that warm that day that it wasn't among the coldest April highs?

 

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12 minutes ago, LibertyBell said:

that low of 12 in 1923 is pretty amazing!  how come it's not on the lowest max list-- did it get that warm that day that it wasn't among the coldest April highs?

 

It got to 36° for a high.

1923-04-01 36 12
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3 hours ago, SnoSki14 said:

Would be interesting to have this trend south and impact us but we know that'll never happen.

Instead it's going to be a dreary, cool and miserable few days

40s and rain, talk about a horrendous weather week.  Looking forward to the 2nd week of April when we'll see a big warmup to the 70s. 

Anyway I hope everyone has a great holiday weekend. 

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3 minutes ago, MJO812 said:

I did but it seems like he doesn't think so. Things go in cycles.

He said we won’t see 21 degrees in April again like in 1982. That’s a fair assessment given how warm the planet is now 

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