Jump to content
  • Member Statistics

    17,611
    Total Members
    7,904
    Most Online
    NH8550
    Newest Member
    NH8550
    Joined

2024-2025 La Nina


Recommended Posts

1 hour ago, michsnowfreak said:

One of the more impressive winter records that has yet to be broken at many stations in the midwest/Lakes is the all time high temp in January. Jan 25, 1950 (Detroit was 67, Ann Arbor 72). Of the winter months here, December has warmed the most and January the least (hardly at all). 

I suspect that the 1950 record at Ann Arbor will stand for quite some time to come. It's just so far beyond anything that has occurred in January that it's difficult to see its being matched or broken anytime soon. The Detroit record might be something that could be challenged over the next decade or so.

  • Like 1
Link to comment
Share on other sites

5 hours ago, Typhoon Tip said:

it was 89, 91, 90, 39 on mar 29,30,31, apr 1, 1998, up at umass lowell in ne massachusetts.  i know, i was there.    and yes... 39 on apr 1

back door front toting cold from the heart of satan swept through the region on the evening of the 31st.   it was off the high of the day by 12 or so anyway by 6 pm when it arrived, but we shed 20 f in 10 min and the remaining 20 over the next several hours.  greatest 24 hour temperature correction due to specifically, back dooring, i've ever personally experienced or ever really even heard off. 52 big ones.  i've seen 40 corrections several times.

anyway, that 1998 heat happening now .. it would be interesting.   

I remember that heat...I was a junior in HS.

Link to comment
Share on other sites

On 11/4/2024 at 4:23 PM, GaWx said:

 Today’s Euro Weeklies mean, while warm dominated til the end once again, have a change late (not on prior runs) toward a weakening SPV that approaches the climo avg fwiw:

IMG_0663.png.ffb9515535184759daacbd68cd5c3c3d.png

Volatility of the AO and NAO domains continues to be the main theme. We had the record October AO swing recently from low to high in the raw index. This was following the record 500mb low pressure in August. Now the area south of Iceland is approaching the positive 500 mb height record for November at near +4.6 SD for next week. The block is coming in a little more south based than usual so the raw indexes are missing the magnitude of the 500mb anomaly.

 

IMG_1822.thumb.jpeg.26ca8b9b5e724a8dc84a5b2914ce3891.jpeg

 

  • Like 1
Link to comment
Share on other sites

Volatility of the AO and NAO domains continues to be the main theme. We had the record October AO swing recently from low to high in the raw index. This was following the record 500mb low pressure in August. Now the area south of Iceland is approaching the positive 500 mb height record for November at near +4.6 SD for next week. The block is coming in a little more south based than usual so the raw indexes are missing the magnitude of the 500mb anomaly.
 
IMG_1822.thumb.jpeg.26ca8b9b5e724a8dc84a5b2914ce3891.jpeg
 





  • Like 1
Link to comment
Share on other sites

4 hours ago, bluewave said:

Volatility of the AO and NAO domains continues to be the main theme. We had the record October AO swing recently from low to high in the raw index. This was following the record 500mb low pressure in August. Now the area south of Iceland is approaching the positive 500 mb height record for November at near +4.6 SD for next week. The block is coming in a little more south based than usual so the raw indexes are missing the magnitude of the 500mb anomaly.

 

IMG_1822.thumb.jpeg.26ca8b9b5e724a8dc84a5b2914ce3891.jpeg

 

being on the eastern limb of the nao domain matters some, too. 

in general ( imo ) nothing matters until the +wpo/+epo changes.   it's not just this indexes being positive, either... the pac entire manifold is in a double-a type.   that's all 'self-reenforcing' and ... heh, gotta say,  if there's ever a november set to correlate to an ensuing winter, better than other years, this is a candidate.  that's like taking half the planetary system and creating the same brick out of it - it's going to need a pretty big hammer to bust it up...

  • Like 2
Link to comment
Share on other sites

32 minutes ago, 40/70 Benchmark said:

Anyone know why this says eastern phase? Could have sworn QBO is west...

QBO.png

The QBO is changing at the upper levels like it usually does whether going westerly or easterly. The important factor still is the 30-50mb range regardless which shouldn't change for another ~12 months. They are correct though in stating the QBO is in the east descending phase as of right now.

Westerly tends to descend faster than easterly so it shouldn't make a difference at all for winter, but it should give us clues going into next winter.

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

MJO rmm ens forecasts currently predict another 4-6 pass between Thanksgiving and mid-December-ish. 

November will be mild overall for the east, but might have some variability on the cooler side, potentially a huge lake effect event late Nov or an interior snowfall in the NE. Then likely turn back milder for the first half of December. Beyond that is when I’m watching for it to turn, if at all.

Link to comment
Share on other sites

October finished at the 2nd warmest for the CONUS. The September and October period was warmest by a wide margin. Very impressive how much warmer this fall has been so far than the 2015 super El Niño.


IMG_1834.thumb.jpeg.b19b3ac816a9eb77a33ab1f5a705b19a.jpeg

 

  • Like 1
Link to comment
Share on other sites

3 hours ago, bluewave said:

October finished at the 2nd warmest for the CONUS. The September and October period was warmest by a wide margin. Very impressive how much warmer this fall has been so far than the 2015 super El Niño.


IMG_1834.thumb.jpeg.b19b3ac816a9eb77a33ab1f5a705b19a.jpeg

 

It’s also the second warmest January-October period on record.

  • Like 2
Link to comment
Share on other sites

13 minutes ago, snowman19 said:


New NMME:

 

 

 

 

It's been out for 2 days on TT. Seems like, at least at this point, all seasonal forecasts show the Dec-Feb period average in the +1-2C range for the east. The question now is whether that's underdone or overdone. Let me get back to you on that one!

  • Like 1
Link to comment
Share on other sites

6 minutes ago, mitchnick said:

It's been out for 2 days on TT. Seems like, at least at this point, all seasonal forecasts show the Dec-Feb period average in the +1-2C range for the east. The question now is whether that's underdone or overdone. Let me get back to you on that one!

I think at this point, an above normal (temp) winter looks extremely likely. Snowfall is obviously the hardest to predict because it only takes one rogue big storm in an otherwise total crap snow pattern to skew the entire winter season. We saw that in 15-16

  • Like 1
Link to comment
Share on other sites

6 minutes ago, snowman19 said:

I think at this point, an above normal (temp) winter looks extremely likely. Snowfall is obviously the hardest to predict because it only takes one rogue big storm in an otherwise total crap snow pattern to skew the entire winter season. We saw that in 15-16

I posted a month or so ago (too lazy to find it) that December would torch and I  felt mby wouldn't get legit snow chances until the 1/15-2/25 period. I'll stick with that for now with the only caveat that 6-week period may need future adjustment in the future back a week or 2 to start in early January, but only if N America is able to cool fast enough from December. 

  • Like 2
Link to comment
Share on other sites

On 11/8/2024 at 10:37 AM, Typhoon Tip said:

being on the eastern limb of the nao domain matters some, too. 

in general ( imo ) nothing matters until the +wpo/+epo changes.   it's not just this indexes being positive, either... the pac entire manifold is in a double-a type.   that's all 'self-reenforcing' and ... heh, gotta say,  if there's ever a november set to correlate to an ensuing winter, better than other years, this is a candidate.  that's like taking half the planetary system and creating the same brick out of it - it's going to need a pretty big hammer to bust it up...

We don’t even need a very strong Alaskan +EPO vortex anymore since the west based Greenland Block this fall linking up with the Southeast Ridge has produced record warmth. 
 

IMG_1839.gif.8a53c7c5ec105965cd9e51d2c7471ca8.gif

  • Like 1
Link to comment
Share on other sites

1 hour ago, snowman19 said:

I think at this point, an above normal (temp) winter looks extremely likely. Snowfall is obviously the hardest to predict because it only takes one rogue big storm in an otherwise total crap snow pattern to skew the entire winter season. We saw that in 15-16

With how November is looking I am inclined to agree with this. The question is what is the magnitude of the warmth, and how long are the favorable vs unfavorable windows? Are we looking at +2f or closer to +5f? If we are looking at a shitty pattern like 15-16, 16-17, 22-23, etc where it’s closer to the +5 end, I would bet on well below normal snow. In my opinion if you run winters like 15-16 and 16-17 through a simulation, it would be well BN snow 9/10 times. The whole “relying on a 2 week window in a sea of shit” thing isn’t a sustainable way to get to average or above average snow. This is more true up north where it takes more than one big storm to get to average. 

  • Like 1
Link to comment
Share on other sites

3 hours ago, mitchnick said:

I posted a month or so ago (too lazy to find it) that December would torch and I  felt mby wouldn't get legit snow chances until the 1/15-2/25 period. I'll stick with that for now with the only caveat that 6-week period may need future adjustment in the future back a week or 2 to start in early January, but only if N America is able to cool fast enough from December. 

I see December being up and down, kind of like November 2021. The first third of the month will be colder than average, the second third warmer than average, and the final third a bit cool. December is going to be mostly dry, so not much snow. I see January being the torch month, like December 2021. If there is going to be the classic la nina, -PDO, MJO 8/1 mismatch month this winter, it's going to be February.

  • Confused 1
Link to comment
Share on other sites

7 hours ago, snowman19 said:

I think at this point, an above normal (temp) winter looks extremely likely. Snowfall is obviously the hardest to predict because it only takes one rogue big storm in an otherwise total crap snow pattern to skew the entire winter season. We saw that in 15-16

Bold call. Every winter is above normal in terms of temps now. You can predict that every winter for next 100 yrs and probably be 95% right.

Link to comment
Share on other sites

32 minutes ago, BuffaloWeather said:

Bold call. Every winter is above normal in terms of temps now. You can predict that every winter for next 100 yrs and probably be 95% right.

Milder than avg winters will outpace colder than avg ones, but 5 of the next 100 winters colder than avg? I'll take the over. While we've only had 2 colder than avg winters since 2015-16, we had quite a few from 2000-2015.

Link to comment
Share on other sites

4 minutes ago, michsnowfreak said:

Milder than avg winters will outpace colder than avg ones, but 5 of the next 100 winters colder than avg? I'll take the over. While we've only had 2 colder than avg winters since 2015-16, we had quite a few from 2000-2015.

I know I’ve said this a million times but there continues to be a huge over reaction to this -PDO trough west/ ridge east pattern we’ve been in since the late 2010s. People act like the planet is so warm now that the right pattern can’t even get us a “cold” winter anymore. The western half of this country had a very cold winter just two years ago. 

  • Thanks 2
  • 100% 1
Link to comment
Share on other sites

18 minutes ago, roardog said:

I know I’ve said this a million times but there continues to be a huge over reaction to this -PDO trough west/ ridge east pattern we’ve been in since the late 2010s. People act like the planet is so warm now that the right pattern can’t even get us a “cold” winter anymore. The western half of this country had a very cold winter just two years ago. 

Agree. We had our most severe stretch of winters on record 2007-15 while the west was parched in drought. Is the planet warming? Yes. Will we still have cold winters? Yes.

  • Like 1
Link to comment
Share on other sites

1 hour ago, michsnowfreak said:

Milder than avg winters will outpace colder than avg ones, but 5 of the next 100 winters colder than avg? I'll take the over. While we've only had 2 colder than avg winters since 2015-16, we had quite a few from 2000-2015.

Climate change is increasing exponentially. Obviously my statement was a hyperbole but not that far fetched of one as we move forward.

  • 100% 1
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   1 member

×
×
  • Create New...