WINTER 2015-16: MORE MILD…BUT STILL WILD!
Good afternoon! I hope everyone had a nice weekend! After another mild day on Friday, things chilled off a bit this weekeend, but nothing extreme for this time of the year.
Saturday featured a mix of sun and clouds, with temperatures near 50. Sunday promised to warmer, but a pesky coastal low actually developed light rain along the coast during the afternoon. It wasn’t a big storm or anything, just a reminder that this is November.
With the rainfall, it also turned quite raw across the area. Quite a change from the abnormally warm temperatures we’ve been enjoying so far this November!
Still it could always be worse for this time of year. Folks in the midwest endured through one of their biggest November snowfalls on record this past weekend. Chicago got plastered with 11″of heavy wet snow, making this their second biggest November snowstorms on record!
It was also just one year ago today, that we went through a similar weather event right here in New England. I remember the stress of writing my winter forecast for last year, as well as forecasting a pre Thanksgiving nor’easter about to pummell the area.
As it turned out, Boston was spared heavy accumulations from that storm. However, you didn’t have to travel too far to the west & north of the city to start running into significant accumulations.
I remember driving up to my sister Pam’s house in coastal New Hampshire, and entering right into a winter wonderland! She received about 7″ of wet snow at her house, but many areas just inland from her easily topped a foot. It really felt more like Christmas, rather than Thanksgiving!
What about this year? Well, I am happy to report that there will be absolutely no travel issues heading over to Grandma’s house this Thanksgiving! I will have all the details in my weekly forecast at the end of my post.
Looking back, it was interesting to note how we had several nor’easter type storms last November. In fact, November was much colder and snowier last year as a whole here in New England.
Although December turned rainy and warm, the pattern in November was most certainly an omen for things to come later in the season. I like to use the phrase, “what happens in November, the winter will remmember.”
Some say it for December, but I truly believe November is the month which holds the most clues for the upcoming winter here in Boston.
I have to admit, I loved all the chatter this past summer talking with folks about last winter! I also loved when they asked me questions about why it was so severe, and what my thoughts were on the upcoming winter.
It made for some great conversation, and brought back some painful memories, some good, and some not so good. Last winter will be talked about for years to come by Bostonians. We will look back to last winter, as we did with the famed Blizzard of ’78.
What about this winter? What kind of winter should we expect this year? If you recall last year, I could see a rough winter was ahead from way back in the summer! This year, there are many more conflicting signals!
It’s been an interesting fall to say the least. September was one of the warmest on record. It cooled off back to near normal in October, only to turn much warmer than normal for much of November. All the while, we are continuing our abnormally dry weather patterns, stemming back to last year.
While all of this was happening, I’ve been observing. In fact, I begin my journey of trying to forecast the upcoming winter starting way back in July!
It’s a bit of a strange concept in weather, but to be able to forecast the future, you must understand & study the past. This means analyzing what the weather did in years past (analog years) and also having a good memory on what has happened in recent events.
To formulate my forecast, I study and analyze 17 different global factors to come up with a educated theory as to what I think will happen.
Among some of the scientific signals I study are:
*El Nino (warmer than normal ocean in southern Pacific ocean)
*La Nina (colder than normal water in southern Pacific)
*Overall temperature profile (warm pools and cold pools) in Pacific and Atlantic Oceans
*Solar cycles
*Long range computer models
*Where blocking patterns may set up during the heart of winter
*Studying analog years (matching this year with a similar year in the past year)
Some of the signs I look for from Mother Nature is as follows:
*Autumn Siberian and Canadian snowfall
*Temperature departures in November
*Number of days with fog, Frosts and freezes during autumn (the thicker the fog, the deeper the snowpack)
*Position of troughs (cold & stormy weather) for the last 2 weeks in November
*Squirrel activity
*Acorn production
After compiling all of these factors, I have come to some conclusions for this winter. First, I don’t believe we are in for quite as severe winter as we had last year.
Believe it or not, the factors which caused last winter are still pretty much in place from last year. However, there are some subtle differences which will help prevent us from another repeat of snowmaggedon.
There are two camps of thought. One camp believes El Nino is so powerful this year, that it will overwhelm the pattern with warm air, making storms more rain than snow.
The other camp believes the El Nino has peaked, and is shifting more towards the cental Pacific. This would result in a stronger polar jet stream, and when mixed with the sub tropical jet will deliver another catastrophic winter form Boston down to Washinton D.C.
After reviewing all my data, I do believe that this is not your typical El Nino going on here. Other than the El Nino being stronger, global Sea surface temperatures are very similar to last winter. A typical strong El Nino would mean a very warm winter with below average snowfall for Boston and much of New England.
However, from what I am seeing, I do believe the global factors from last year continue to influence our weather for this winter. The fact of the matter is, meteorologists have never seen sea surface temperature profile such as this year, so there’s no other year to compare it to! So nobody knows for sure what’s going to happen this winter!
As I mentioned earlier, there are many conflicting signals. First and foremost, the abnormally warm and dry November would argue for below average snowfall in Boston this winter.
The statistics are alarming for us snow lovers out there! With temperature departures of greater than 4 degrees in November, I believe there has been only 3 winters that featured near or slightly above normal snowfall in Boston. The rest were all below normal, and in many cases by quite a bit!
Furthermore, we have had less foggy days this fall than last. I remember the fog so thick last year, visibility was near zero at times. Remember how deep the snow was?
We have also have had less frost than last year. This is a no brainer considering how warm the autumn has been.
However, there are many other signals that point to a different scenerio. Sea surface temperatures continue to feature above normal readings off the British Columbia coast. This would promote a blocking ridge of high pressure in that location (much like last year). This would allow cold air to seep down into New England from Quebec, Canada.
Siberian snowfall this autumn has been a bit less than last year, but still was significant enough to rank it in the top 5 in recent years. Studies done by Judah Cohen have shown a direct link of Siberian snowfall to heavy snowfall in New England the following winter.
Next, we are running a serious precipitation deficit here in eastern Massachusetts. In fact, it is now close to 10″ for the year. I believe a stormy winter is on the way, with quite a bit of moisture. If the polar jet (cold) were to maintain its strength, it could phase with the El Nino sub-tropical jet (moisture), it could result in several heavy snowfalls, especially later in the season.
What about some natural signs? As many already know, the acorn crop this year was astounding! Many said they have never seen so many acorns in their life! Of course, this is met with skepticism in the science community. But for me, I think there’s some truth to it. I believe this is Mother Nature’s way of providing food for animals, to help make it hrough a long winter.
With ocean temperatures being one of our biggest teleconnection for the weather, I believe the El Nino is the biggest wildcard to watch over the next month or two. If it continues weaken, and shift west, towards the central Pacific, it would allow colder air to seep down the eastern part of the country.
Add to that a active sub-tropical jet stream, and that could mean another snowy season. If El Nino maintains its strength, and does not shift west, it would certainly mean a warmer winter with much less snow for Boston.
So what do I think? Putting all these factors together, my gut is telling me we can expect a milder first half of the winter, much like last winter.
Most computer models are forecasting a rapid decline in El Nino starting in January. This could mean a very different second half of the winter around here. This, along with the above average ocean temperatures off the British Columbia coast, is why I believe El Nino will not be able to fully take control this winter.
I believe December will be a very changeable month, with no set pattern settling in. We will have times of warm and cold weather, along with the threat of a significant winter storm or two. One at the beginning of the month, then the other around Christmas.
January is when the winter pattern will begin to make its presence felt. It will begin to turn colder & stormy, especially during the second half January, as the El Nino weakens. February could turn into another wild month. Although not as cold as last year, we could have a very active month, with lots of heavy rain and snowstorms. The big show could be in March this year. I believe factors will come together to possibly bring us blizzard at the beginning of the month.
You would think with all these storms predicted, Boston may end up with as much snow as last year. I don’t believe that this will be the case. It will be a warmer winter this year, and many of these storms will bring mixed precipitation and snow changing to rain in the city, down towards the Cape.
With that being said, most of our snow will accumulate in the second half of January, February and early March of next year. For all these reasons, I am going to go against the warm November theory this year, and go for between 45 and 65″ of snow in Boston this winter.
Snowfall will not pile up one on top of the other this winter. We will have periods of milder weather when snow will melt off in between storms.
Average snowfall at Logan airport is 44.” So I am expecting a season of a bit above average. This is roughly half of what fell last year, but this year will feature many more storms with high water content in them. Meaning heavy wet snow, or water logged snow from the snow turning to rain. So the clean up and hardship will still be considerable when all is said and done.
If you live north and west of Boston, I am expecting less moisture, but it will be colder, so accumulations may be closer to average, say between 50 and 70.” This holds true up the New Hampshire and Maine coast. Less snow than last year, but still close to average, which is between 60 and 70″ of snow in most places.
If you live down towards the Cape, you can expect less snow than last year, partly due to less of a presence of arctic air. Warm ocean temperatures will turn snow to rain for many of the storms. However, you too should brace for a major storm later in the winter.
Once again, eastern New England will be in the fire hose of precipitation this year. With that being said, I believe there will be enough precipitation to supply ski areas with plenty of snow this winter, especially later in the season. Unlike last couple of years, there may be a one or two nuclear melt downs, which would make this season not as consistant as the past few.
I also wanted to point out, for our friends in the mid-atlantic region, from D.C. to New York, this will be a very active winter, with above average precipitation. If the polar jet can inject enough cold air into these storms, a very snowy scenerio could be in the cards for you, especially for February and early March.
Now for your weekly autumn Thanksgiving forecast. I will rate this week a 9 out of 10! I am expecting a very quiet week of weather this week. Perfect for traveling!
For today and tomorrow, expect sunny and chilly weather, with highs in the lower 40’s and lows in the 20’s. Wednesday will feature fair skies, and somewhat milder temperatures, with highs near 50.
Wednesday night will be fair and on the chilly side, with lows in the 20’s and 30’s. After a chilly start, Thankgiving afternoon may feature mostly cloudy weather, but temperatures will be milder, with highs in the mid 50’s.
Black Friday will turn sunny and very mild, with highs near 60! A cold front will be approaching New England on Saturday, so we should expect some showers, but a washout is not anticipated.
It should clear out and turn cooler on Sunday, with highs in the 40’s. It might turn stormy and colder for the beginning of December, but I will update on this potential if conditions warrant this weekend.
Well that’s about it for now! In next week’s blog, I will review the months weather for November, and preview what we can expect for December. I will also be updating everyone on the status of El Nino.
If I have time, I may try to make a brief winter outlook for friends in Florida and California. In the meantime, it’s that time of year again, if my forecast does not work out, you get two turkey’s for the price of one!
***Have a safe & happy Thanksgiving, everyone!***
Thanks for reading,
*Feel free to ask any questions, or comment on my forecast!*
Pete