Jump to content
  • Member Statistics

    17,606
    Total Members
    7,904
    Most Online
    ArlyDude
    Newest Member
    ArlyDude
    Joined

Winter 17-18 Speculation


griteater

Recommended Posts

-Solar In my opinion drives the NAO,shown here http://www.issibern.ch/teams/interplanetarydisturb/wp-content/uploads/2014/04/Mursula_03_2014.pdf

Solar wind and EEP levels are critical to NAO,the October average on solar wind comes in at 438.5 km/s,a much lower number of 532.4 km/s in September.The September blowup was unusual seeing we are in the declining period of Solar Cycle 24 but the October number is closer to the late spring/summer numbers.Also the top two biggest flares and 3 of the top 12 on the entire cycle happened in early September so that's in the last 7 years.The sun is very volatile  and unpredictable so anyone who says they can forecast it accurate is probably lying.EEP levels are running around 7.5 over the last 3 months or so.

In my opinion,I think you need a number around 400 km/s or lower on solar wind and a number around 5.5 to 6 on the 2 MEV Electron Fluence to get a good -NAO signal.2009-2010 is a perfect example of what you're looking for and we all know what happened that winter,shown here http://www.solen.info/solar/old_reports/2010/february/solwind.html

-QBO is running -15.28 at last check,great shape for blocking if the solar can improve.slightly.-QBO at 30hpa is a good signal for blocking and it's almost identical to the 2009-2010 number.

-ENSO weak,moderate LNina predicted.Not the greatest for the SE I think we are going to have a battle getting any heights in Alaska/west coast there's usually deep low/trofing there in the setups.

-MJO So far the MJO has progressed through the La Nina setup and has stayed fairly strong.If the convection can make it to the dateline it will help fight off La Mina conditions,promoting higher heights in Alaska,west coast.A raging or stalling phase in 4,5,6,0r 7 wont be good.

-SSW have to be strong and persistent to have a big influence,So far PV isn't real strong id say average as is the temps.PV has been displaced a little so just have to watch.

Bout all I got on this subject,carry on.

 

Link to comment
Share on other sites

  • Replies 475
  • Created
  • Last Reply

This time of year one of the things we look for is how the northern areas are progressing in terms of snow and cold. For the next two weeks a good part of Canada will stay below freezing (even parts of extreme N. US). This will allow for snow build up; which will enhance the cold build up.

(going out on a limb) Just interpreting the current models and indices, it would look like we could get a dumb of cold air around Thanksgiving. But that's just me thinking the indices are moving in a favorable direction and the current LR models pattern depictions.  

Here's the next 10 days of total snow (a lot of this will stay around with the cold air noted above):

 

 

aaaa.jpg

Link to comment
Share on other sites

21 hours ago, WidreMann said:

Global temperatures are rising this fall at an alarming rate. I'm not sure that the old analog method and index method is going to matter anymore.

I have to agree. 30 year averages we use seem to be a joke nowadays. A" cool or cold " month is about average and all the others are above. We get a cool down for 2-4 days then it's right back to above to well above for weeks sometimes. This has been the case for years and seems to be getting progressively worse. We can still score a snow; I've been lucky the past couple years to see a pretty snow, but it's getting harder and more isolated. I think accurate predictions are going to be harder to come by, as will below "normal" temps. This is the new normal.

Link to comment
Share on other sites

6 hours ago, SimeonNC said:

Idk about you but this "torch" for my area is forecasted to end Tuesday according to TWC.  

Meh, looks pretty  seasonable, maybe a hair below. We'll see, maybe we'll get some cold spells this year. Odds say most above I 20 will get at least some snow and I 85 crew should have at least a shot or two, even in a bad winter.

 

Link to comment
Share on other sites

November is looking better in the long range with the latest GFS runs.  Trying to build a 50/50 low/SE Canada vortex after mid-month which will would give us a locked-in HP overhead, keeping temps at or below avg.  12z GFS then really building off of it with Greenland blocking and keeping heights low over SE Canada & N Atlantic.  

As long as NOV doesn't torch, I'm still feeling optimistic about the winter.

Link to comment
Share on other sites

14 minutes ago, Wow said:

November is looking better in the long range with the latest GFS runs.  Trying to build a 50/50 low/SE Canada vortex after mid-month which will would give us a locked-in HP overhead, keeping temps at or below avg.  12z GFS then really building off of it with Greenland blocking and keeping heights low over SE Canada & N Atlantic.  

As long as NOV doesn't torch, I'm still feeling optimistic about the winter.

Been noticing the same. Very encouraging LR trends showing up on models as we roll through second half Nov. Kickoff Dec 1st is fast approaching and time to zero in on trends to see if we can get the table set right and get off to a good start for a change. Lot funner chasing/ tracking storms in Dec as opposed to LR patterns.

Link to comment
Share on other sites

17 hours ago, raindancewx said:

The more I look at it, the more I'm convinced that Nino 1.2 temperatures (not departures) are pretty key to temperature anomalies in the East. Here is November so far, in years when Nino 1.2 is 20.0C-20.4C in October. It was 20.2C in October 2017:

3RYbB3B.png

Not exactly a stellar set of years for us. Also, November 1996 was pretty cold, same with 2013. While we may not torch like the climate models were saying, I think it'll hard to be better than about average (which, by the way, we also were last year and that did not turn out well for the following winter).

Link to comment
Share on other sites

On 11/6/2017 at 3:02 AM, raindancewx said:

The more I look at it, the more I'm convinced that Nino 1.2 temperatures (not departures) are pretty key to temperature anomalies in the East. Here is November so far, in years when Nino 1.2 is 20.0C-20.4C in October. It was 20.2C in October 2017:

3RYbB3B.png

November is in hopes of equaling itself out here in the next week or two, as up in VA anyhow we have forecasted temps in the middle-upper 40s coming up here for the next couple of days. I myself have a good feeling about this winter, as SN Lover and WOW had mentioned. I just feel like with the building of that snow pack and the mention of 50/50 low showing up already, it has positive elements to it already, whereas last year was a disaster and I believe ROA literally had one 5'' snow storm. Cheers to Snow, ICE or whatever frozen variety mother nature wants to give us!

Link to comment
Share on other sites

1 minute ago, Met1985 said:

Meh. I thought the CFS was best on the last couple of days in the month. This will change a lot I think. I hope I'm wrong though.

I agree. Just the messenger. I really don't hold much confidence in any model; especially monthly outputs. But, I would rather see a cold look than a warm look. Just tells us things aren't set in stone for this upcoming winter.  

Link to comment
Share on other sites

3 minutes ago, FallsLake said:

I agree. Just the messenger. I really don't hold much confidence in any model; especially monthly outputs. But, I would rather see a cold look than a warm look. Just tells us things aren't set in stone for this upcoming winter.  

Oh I know. I hope we actually get a decent December this year. It would be great if blocking truly showed up.

Link to comment
Share on other sites

31 minutes ago, FallsLake said:

Here's the latest Brazilian model for Atlanta. Shows a little snow ~ XMAS, then sporadic light events through winter. **Again just the messenger, I don't put much stock in these models (especially the Brazilian).

 

aaaa.jpg

I love a good Brazillian! JB just threw up the 09/10 analog for this coming winter!! Guess he's off the warm train!

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.

×
×
  • Create New...