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Looking ahead to Winter 2011-2012?


Ji

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We had a very strong shot of arctic air in mid January as the low at Richmond that winter was 4 degrees. This was associated with about an inch of snow. There was a similar event in C VA about a week before Christmas and then in early February, but as zwyts noted, it was a rather futile winter with only about 4" total officially at RIC.

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I was living in Silver Spring that winter...It was anti-climactic after 95-96...I think I got 11" for the winter....I know the further NW burbs did quite a bit better though...It was basically a warm winter with a few notable arctic shots.....all 3 months were well above normal.....and there were a decent number of events but almost all were nuisance events where I was with very little impact....there were 2 notable events...one was 2nd week of January....multi day event of snow to mix to snow....there may have been some down time and gaps....maybe 3-4"....some areas did better....the other was 2nd week of February and was a classic 4-8" SECS over a weekend....melted quickly...fairly low impact.....Baltimore did ok with the April Fools storm but it missed DC completely...

'96-'97 was so warm, and had very few larger type systems in January and February. Just an overall terrible pattern in mid-winter. Thankfully there's a lot of things different about the current state of the oceans and atmosphere.

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I was living in Silver Spring that winter...It was anti-climactic after 95-96...I think I got 11" for the winter....I know the further NW burbs did quite a bit better though...It was basically a warm winter with a few notable arctic shots.....all 3 months were well above normal.....and there were a decent number of events but almost all were nuisance events where I was with very little impact....there were 2 notable events...one was 2nd week of January....multi day event of snow to mix to snow....there may have been some down time and gaps....maybe 3-4"....some areas did better....the other was 2nd week of February and was a classic 4-8" SECS over a weekend....melted quickly...fairly low impact.....Baltimore did ok with the April Fools storm but it missed DC completely...

it was warm as he!! the first week of Jan, 97

I mowed my lawn on the anniversary of the 96 Bliz, whining the entire time (honestly!)

then we got the 2nd week event you mentioned

we just can't put 2 great winters back-to-back around here

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I was living in Silver Spring that winter...It was anti-climactic after 95-96...I think I got 11" for the winter....I know the further NW burbs did quite a bit better though...It was basically a warm winter with a few notable arctic shots.....all 3 months were well above normal.....and there were a decent number of events but almost all were nuisance events where I was with very little impact....there were 2 notable events...one was 2nd week of January....multi day event of snow to mix to snow....there may have been some down time and gaps....maybe 3-4"....some areas did better....the other was 2nd week of February and was a classic 4-8" SECS over a weekend....melted quickly...fairly low impact.....Baltimore did ok with the April Fools storm but it missed DC completely...

That was the storm that would not accumulate on pavement during the daylight hours, even under heavier rates. Trees and grass were all coated, so it was a pretty storm, but nothing stuck on roads until after dark. Last winter was way better here than '96-'97.

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I think I have my years mixed up. I lived in Summit County CO for 7 years (1992-1999) and worked for a ski area. This past season had one of the top 5 snow seasons including a massive May. The base @ Arapahoe Basin topped 100" this year (very uncommon). When I lived there the base only hit 100" one time and there was a 36" Memorial Day storm. I can't remember what year it was. The year I'm trying to remember was a Nina (not totally sure about this) and January alone had 160".

My only curiosity is what transpired on the EC the following year because this year was spot on similar. I'll call some old friends and see what I can find out.

Not really any depth to my analog but at least it will keep me interested during the warm season. I don't really have any high expectations for this upcoming winter. It's always a challenge to combine precip and cold temp in a MA winter regardless of the state of ENSO and the overall patterns. The odds will always favor more rain than snow.

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BethesdaWX mentioned QBO- can someone explain to me what that is and how it affects the winters here? Every once in awhile I see this mentioned by someone but I don't know what it means. Thanks.

this explains it

http://ugamp.nerc.ac.uk/hot/ajh/qbo.htm

these are the numbers updated monthly around the 7th

http://www.cpc.ncep.noaa.gov/data/indices/qbo.u30.index

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I believe the big year for Arapahoe when they stayed open til August was 1994-95

You are correct. I checked my old pictures and called some old friends. My memory mashed up 94-95 and 95-96. It was January of 1996 that had 160" of snow. It was the 94-95 season with the big base and late snow.

Hmm.... If my barely scientific analog is correct then........95-96 redux this year? lol

ENSO isn't a good fit but who knows?

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Remember if we get a -QBO thats not bad, but wasnt 2001-2002 a -QBO?

According to that data that mitchnick posted, 01-02 was a +QBO. In looking at some of our real snowy winters, most all seem to have a -QBO on that chart; however, there's a couple of them with real -QBO's that were still really crappy winters here (91/92, 00/01, 07/08) so I don't know how important it is. Though I'm not understanding a lot of this and how it correlates to our winters.

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I hope this winter is straight up ENSO neutral. It would be great to see the reasoning with the winter forecasts in October without Nina/Nino on the table. The HM's and Don S's of the board will have some truly excellent and intellectual posts about the finer details.

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  • 2 weeks later...

Over at the accuweather forums BtownWxWatcher posted an analogue map that factored in Winters after 2 straight Winters of a -NAO with a -.5 departure or more. The Winters used also included the full ENSO spectrum. Here are the results:

post-6510-0-50084300-1309661956.png

According to this we could see another cold one. Factor in the potential for a -QBO and the chances of colder than normal weather increase even more.

Oh, I'm new by the way. Nice to meet you all.

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Over at the accuweather forums BtownWxWatcher posted an analogue map that factored in Winters after 2 straight Winters of a -NAO with a -.5 departure or more. The Winters used also included the full ENSO spectrum. Here are the results:

According to this we could see another cold one. Factor in the potential for a -QBO and the chances of colder than normal weather increase even more.

Oh, I'm new by the way. Nice to meet you all.

Welcome!

Gonna have to kind of mirror what zwyts said to a degree on this one... it's quite difficult to pick up on NAO "trends" this far out, especially when regarding year-to-year analogs with little or no significant correlation beyond the NAO signal.

Also, using strictly the "winters after 2 straight winters of a NAO dep. of -0.5 or more," the analogs should also include 1965-1966 (3rd year in a 4-year streak) and 1979-1980 (the 3rd of 3 consecutive years). Though, even with these analogs, the signal doesn't change significantly from the map you presented.

My initial thoughts for the region is that we end up near normal to slightly below normal for the winter... but that forecast is still a couple of months too early :P

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Welcome!

Gonna have to kind of mirror what zwyts said to a degree on this one... it's quite difficult to pick up on NAO "trends" this far out, especially when regarding year-to-year analogs with little or no significant correlation beyond the NAO signal.

Also, using strictly the "winters after 2 straight winters of a NAO dep. of -0.5 or more," the analogs should also include 1965-1966 (3rd year in a 4-year streak) and 1979-1980 (the 3rd of 3 consecutive years). Though, even with these analogs, the signal doesn't change significantly from the map you presented.

My initial thoughts for the region is that we end up near normal to slightly below normal for the winter... but that forecast is still a couple of months too early :P

I'd like a snowfall forecast, please. I'd like dates and amounts as well. :P

No, seriously, you did a great job last year with snow forecast maps, especially for my area. Hopefully you get the chance to be able to forecast some higher totals this time around. Any thoughts on an analog to what we likely see this winter wrt atmosphere, solar, and ocean conditions?

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I'd like a snowfall forecast, please. I'd like dates and amounts as well. :P

No, seriously, you did a great job last year with snow forecast maps, especially for my area. Hopefully you get the chance to be able to forecast some higher totals this time around. Any thoughts on an analog to what we likely see this winter wrt atmosphere, solar, and ocean conditions?

Snowfall forecasts were alright... had some bigger misses towards the end :P Did good on some storms, though.

I haven't even looked at winter yet... we still have two months of summer to go! Gotta enjoy the warmth and storms before the return of the evil cold.

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I hope you're not that father frost guy that used to post at eastern.

I am, as far as I remember I did nothing to earn myself a bad name there. I tried to login to that account here but it wouldnt work no matter what I tried so, I made a new one. Is there something wrong with me being the old user FatherFrost? The only thing I can remember that people showed disdain for was that I posted a preliminary winter outlook and the bashing commenced...for some reason...it was too vague or something like that.

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that sample size isn't very meaningful nor do the parameters have any statistical significance, but that doesn't mean we won't have a cold winter.....I think what we are seeing in the pattern now, continues into winter.....which is transience......usually a transient/progressive pattern is warm in the means for us in the winter.....we get arctic blasts and sometimes meaningful ones, but they are brief and not enough to offset the warm periods.....unless we get a surprise Nino and I think that is unlikely, we aren't going to have a good Pacific in a weak nina or neutral winter.....we could get a blocky winter and that will keep us cold in the means, but it will typically be a dry cold with a storm track to our west.....so it doesn't excite me that much.....still lots to decipher over the next 4-5 months

although I have to agree with you on that statement, if one looks just at the change in equatorial water temps and the current anomalies vs. what the models are saying, it does look like a developing NINO imho

sst_anom_new.gif

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Analogs that might be useful are 1967-68, 1974-75, and 2008-09. All were 2nd year Ninas after a Nino, featured the -PDO, the +AMO, and at least 2 of the 3 likely featured the +IOD. 2 of the 3 winters were in a period of lower solar activity as well (2008-09, 1974-75).

Of course this assuming the ENSO doesn't revert to neutral instead of a Nina. Past history would argue against that though. But low solar is important regarding the NAO, as is the QBO.

QBO DEC/JAN/FEB

1967/68: -7.27 -8.38 -10.21

1974/75: 22.57 -16.70 -15.39

2008-09: 10.46 10.71 12.33

To add into this post, if the -QBO were to not manifest cleanly, I'd think that my analogue choice above might need to be thrown out. I know I'd favor the -AO/-NAO regime given the low Geomagnetic Flux & Weak Solar Wind (assuming it doesn't strengthen). I don't think it is any coincidence that the Strongest -AO in history occured during the lowest Geomagnetic Flux via AP index in recorded history.

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