Jump to content

frd

Members
  • Posts

    5,705
  • Joined

  • Last visited

Everything posted by frd

  1. You might like this research , it touches on your statement. There is discussion on absolute versus relative anomalies .
  2. Of course, I see many mets and private services going with more recent winter analogs and many mets are beginning to question analogs form the past due to recent GW. Possibly they feel they have less value. However, I still think there is value to be gained from the past if you allow for what we have seen the last 7 years around these parts, and then tweak your analog package to account for the current climate regime. As for that map you posted, that is a good visual of the way things have gone recently this decade. However, I have to think if we get the re-emergence of a winter -NAO the NE section of the country will be much colder.
  3. Excellent link, thanks ! Hopefully this winter should not be boring. ( in a good way ) And, I really do like what I am seeing in the Pac, and the NAO domain's early signs are intriguing.
  4. Seems like the PMM is a player too. But you are correct bluewave , there are so many significant players to consider and how they will interact with each other. I am becoming more fascinated every day with the effect of the solar min on the winter temps.
  5. @poolz1 Just as much as getting the block to form is the location of it . This might be another indication for the winter upcoming , speculation of course . The map you have here is classic West NAO domain based blocking. You can see that many posters across the Pond are complaining that over there the - NAO has so far only brought warmth. The East based - NAO is what they desire I believe. Of note as well, if you look at some 500 mb maps posted around the low solar winters they look like the map above. Does this repeat in the winter , not sure. But, no longer can those who say it means nothing continue to say that, because we are into early November if that map verifies. Meanwhile ,solar conditions are pretty dead. Even though the numbers are not on par with 09- 10 we have very low AP numbers, low solar flux and very low sunspots. This is purely solar minimum winters: This is solar minimum winters ( below ) combined with a Enso neutral / weak warm , note the change in the NE Pac and the cold extends East to Europe and beyond.. Courtesy Andrej Flis ( @Recretos )
  6. This is pretty remarkable and a huge driver to the pattern
  7. Do you think the way November goes, the winter might go as well ? And some pros are saying despite the Nina like referecnes some are making, in reality it is not really Nina correlated at all. Beyond that too technical for me to decipher what they mean. Guessing might have to do with the walk cell, BDO, IOD, MT, etc.
  8. Wonder what happens when we get to December and wave lengths lengthen? I need to read more about walker cells and such.
  9. Nice time lapse. Thinking in the process here extensive snow cover in NA the next 15 days, and then with the PV back closer to Siberia building cold air and the snow cover/advance resumes shortly.
  10. @bluewave do you see anything to be concerned about here with the latest PAC SSTs ? ( that is if you enjoy cold and snow in the East later in December ) Seems we are having some changes as we knew there would be. The warm pool has diminished somewhat , warmer anomalies near the Aleutian islands , cooling off the West Coast. Does this current set-up support a Se ridge and reinforces the High North of Hawaii? Or, is the weather pattern out there in flux as you mentioned going towards a -EPO.
  11. When I think back to last winter and things to watch of real substance as clues to the upcoming winter one would be getting the trough in East and the ridge to set up out West for more than a day or two. Last year and this year as well, there has been a very fast Pac jet that broke down quickly any attempt out West for a ridge to form. I thought the seasonal guidance had a forecast of robust West coast ridging at times extending into a + PNA . To make matters worse we set records for the speed of the Pac jet last fall and winter , some really crazy numbers. We need to buckle the flow and get some real changes out West extending into NW Canada, These are some things I would look for in the next 4 to 6 weeks as possible clues for the period DJF.
  12. The association that we once thought was so important has certainly faded in the last 4 to 5 years. I really started to doubt the importance of this when one fall we had an incredible October Siberian snow cover advance and a then a flat AO and NAO in the months ahead. The following Feb. Judah stated the October advance was actually too fast and because of that the anticipated blocking never developed. Huh.... Maybe we need a shake up and I see no concerns about the Siberian snow cover presently. I am more interested in the Pac including Pac forcing, PDO and the IOD, etc.including the QBO for the upcoming winter. Also, very interested in seeing how November plays out. Would like to see some West Coast ridging and the Davis Straights block to really develop and a continuation of a stormy and active pattern in the East.
  13. This is great news regarding the QBO. Ditto for the solar connection
  14. Here comes the next batch of rain for early next week, courtesy of the tropics and the GOM.
  15. @showmethesnow Wow, it is big ! If this actually happens maybe we can place more confidence in the models later in the winter should ( " IF " ) they forecast another huge Greenland block.
  16. This is really nice to see, another unusual mid-October powerful cyclone. Wonder what happens as we shift to late Nov. and early December as the baroclinic zone shifts South. Also, previous monthly Euro runs showed an active East Coast .
  17. You have to think now that maybe the NAO is starting to show its hand. I know some long range models take it back up to positive in later November but still it is at the least nice to see it going negative again.
  18. Maybe the old saying should be , the weather in November the winter will remember, versus, December. Mostly because lately Decembers have sucked ! And then the following winter also sucked. So let's go Cold and active November !!!! Yeah baby
  19. Almost seems with tomorrow's event we might turn the corner, dare I say. Day 4 to 5 Wow, to day 6 and 7 , system and moisture look to move NE towards us day at 8
  20. The models are certainly keying in on something and that something may very well be the extreme + IOD. Are they resolving the future outcome correctly, hard to say , but the general consensus among the models is pretty remarkable, in that a likely a +NAO will occur. Now are the model correct? Not sure as indications seem to reveal the extreme + IOD may decline soon and continue to weaken through the winter. @showmethesnow wanted to add there is some research out there does point to a averaged -NAO for the period DJF.
  21. To balance the goods and the bad this most likely goes in the bad column. Sea ice for this date is the lowest it has ever been. I would think less ice formation would equate to less build up of cold air. That would likely be a poor factor in the creation of a robust cryosphere where cold air builds up and becomes colder and colder over time and then moving South given the impedance. Just my own thoughts here. However , there is great post on 33andrain from member Bring Back who composed an excellent summary on the topic. Here is a brief updated post by Bring Back and the link further down to an in-depth article he composed on sea ice. From Don S Arctic sea ice extent has now fallen below the 2012 figure... On account of abnormally slow sea ice growth, Arctic sea ice extent on October 13, 2019 had slipped below the 2012 amount. In 2019, Arctic sea ice extent was 4.881 million square kilometers on JAXA. In 2012, it was 4.912 million square kilometers. <<< From Bring Back Don, yes 2019 is currently at the lowest extent on record (for mid-October) at this early stage of the re-freeze season. I did an "Arctic Update" on the 2019-20 Winter Discussion/Forecast Thread yesterday and went into the reasons for this. I am not as pessimistic as some commentators and expect the re-freeze rate to increase substantially during this week and into next week, particularly on the Atlantic side of the Arctic which has seen very little growth at all so far. Here's the link to that post: ( I believe you will have to copy and paste into your browser ) https://www.33andrain.com/topic/1710-2019-20-winter-discussionforecast-thread/?do=findComment&comment=153515
  22. Pretty impressive bump up from the WPC , I LOVE IT...... new grass will be partying . hey @C.A.P.E.can you believe it, been waiting ages for an event like this.
×
×
  • Create New...