Stormy Signal! 2/3/25
Hello! I hope everyone is well! It’s been a while since my last post, December 23rd to be exact! My time continues to be limited, as each Monday is filled with increasing work demands. We have a lot to discuss, but unfortunately this is going to be an abbreviated blog. I wanted to get this important update in to make sure everyone is aware of the upcoming pattern for February.
So far, I’m extremely pleased with how the winter forecast has evolved this year. The initial call was for a colder winter, with Boston possibly observing its first colder than normal in over 10 years. What I mean by colder than normal would-be recording December, January and February with below average temperatures. So far, December and January have featured below average temperatures. February was looking warmer, but now it too appears to be leaning cold. We have had cold months in the past 10 years, some even two in a row, but it’s been over a decade to find three consecutive winter months featuring below average temperatures. We just started the month, so we’ll see where we land.
This has also been an amazing winter for outdoor winter activities. Outdoor skating rinks, ice fishing, pond hockey and snow skiing has been the best it’s been in years! Sustained cold temperatures & minimal snowfalls has led to excellent conditions for ice formation. While there haven’t been any blockbuster storms so far this winter, any storm system crossing ski country has produced lots of powdery snow. In fact, the winds have been so strong crossing Lake Ontario, plumes of snow squalls have been crossing New York state and finding their way to many ski resorts in Vermont. They call this upslope snow, and the amounts have been measured in feet in favored upslope ski resorts! Other resorts that have not seen a ton of snow have been able to make a ton of snow due to the persistent cold temperatures and no disastrous meltdowns.
I also called for between 30 and 40″ of snow this season in Boston, with most arriving here in February and March. So far, we have about 15″ of snow this season. This is running below what normally would have fallen at this point of the winter. Normally, Boston would have already received approximately 28″ at this point in the season. We are running ahead of last year, but still below where we should be this time of the year. Overall, it’s been a colder and somewhat snowier winter than last year, which was what I was expecting.
Interestingly enough, all telecommunications, analogs, seasonal computer models all pointed to one of the warmest and least snowiest winters on record back in the fall. While there were many mixed signals, I saw enough winter signals leading me to believe a more active winter was on the way.
While nothing in weather is for certain until after it happens, I am seeing signs of a stormy period for much of New England this February. To me, the snow falling this past Saturday morning was a bit of tone setter from Mother Nature of what may be coming this month. When most of the storm fell as rain around Boston, many areas in New Hampshire and Maine received 3 to 6″ of snow. As the storm pulled away, a quick wind shift to the north changed the rain to blustery snow showers. This led to a surprisingly wintery scene around here, as temperatures plummeted creating hazardous driving conditions.
The long awaited La Nina (cold ocean temperatures off South American coast) has finally arrived. La Nina was originally meant to be the driving force this winter. However, the delay opened the door for other teleconnections to flex their muscles. A large, expansive polar vortex has been squashing the southeast ridge this winter, allowing bitterly cold air masses from Canada to plunge south & east out of Canada. During one of these arctic outbreaks, the frigid temperatures drove all the way to the Gulf coast. As this arctic air advected over the warm waters of the Gulf of Mexico, it initiated a storm to develop. Many of us were in disbelief as the storm quickly intensified into a massive deep south snowstorm. In some areas blizzard warnings were posted in Louisianna where up to one foot of wind-blown snow fell! The storm then tracked across northern Florida where the state observed its heaviest snowfall ever recorded with up to 9″ falling! Most of this storm missed New England, as the cold air kept it suppressed passing out to sea to our south and east.
Aside from that storm in the deep south, most areas have received below normal snowfall. Exceptions have been around the Great Lakes, the mountains of western New England, and the deep south including Florida! Most of the I95 corridor has seen the multi-year snow drought continue. Aside from Portland, Maine, Boston has seen more snowfalls than other major cities along the I95 corridor. There are growing signals of a major disruptive winter pattern change beginning this week, but I am really keeping a close eye on or around Valentine’s Day. This is not unusual in any way. The period from February 4th to the 14th is known as “Primetime” here in Boston. This is when the atmosphere is most conducive to produce a major winter storm, nor’easter or even a blizzard in Boston. Our most severe winter storm ever recorded was observed on February 6th and 7th back in 1978, also known as “The Great Blizzard of 1978″!
The pattern over the next few weeks will feature a classic battle of the air masses! Longtime Boston meteorologist Harvey Leonard (retired) used to always say to get a good storm, you need a clash of air masses. The more intense the clash, the bigger the storm! Mother Nature has been dormant the past couple of years with benign weather patterns. I believe this is going to change in a big way this month!
In an odd twist of fate, the awakening of La Nina is going to be the catalyst to jump start this volatile pattern. We’ve had the cold air around all winter. There just wasn’t any warm air around to make a storm. With La Nina now here, the southern part of the country is going to turn unseasonably warm. At the same time, the polar vortex is expanding, stretching and is ready to send arctic air slowly into the Northeast like taffy. This is going to set up an intense baroclinic zone (difference in temperature) across the middle of the country and just south of New England. This pattern is very reminiscent of the winter of 1995-96.
What I’m expecting is fast moving winter storms beginning this Thursday with storms following every three or four days thereafter. Depending on where this baroclinic zone sets up, these storms can feature all snow, snow to sleet, and the worse scenario freezing rain with a possible ice storm. If storms track close enough, it may bring enough warm air in off of the ocean to turn coastal areas to plain rain. But frigid air will be lurking close by, so flash freezes will be possible if any precipitation changes to rain. As we move deeper into February, the jet stream may dig deeper into the eastern part of the country and develop a more classic nor’easter or even a possible blizzard around mid-month. More storms may follow through the 24th of February before the pattern relaxes. It’s possible Boston receives two to two and a half feet of snow during this particular storm blitz. This will not be as intense as the epic 2014-15 snow blitz but still could bring the city to a standstill for a time at its peak.
Now for your weekly ski forecast. I will rate ski conditions this week a 10 out of 10. Ski country received 3 to 6″ last night, and another storm coming Thursday, with yet another one coming late Saturday into early Sunday. The dam is about to break! Look for the best conditions in years for pretty much the balance of February! Storm after storm will bury ski country with feet of snow! It may be a case of too much snow, as some folks may have trouble getting to the resorts.
Time for your outdoor winter activity forecast. After a fairly mild and benign weather today, expect temperatures to once again slowly fall across the region come tomorrow. A cold front will pass through New England overnight, bringing blustery winds later tonight and especially tomorrow. High temperatures will be felt early in the day tomorrow, with temperatures dropping during the day. It will feel colder tomorrow compared to today due to the gusty winds.
Tuesday night will feature much colder temperatures compared to tonight. Lows will fall into the teens and lower 20s.
Expect a cold start to Wednesday morning, As the day progresses, sunshine will become filtered through increasing clouds. It will be a cold day, with high temperatures around freezing. Clouds will continue to lower and thicken Wednesday night. Snow should overspread the region before dawn Thursday. Most areas should see a quick burst of 1 to 3” of snow. As the storm tracks close to the region, the snow will transition to sleet and freezing rain. Along the coast and south of the Mass Pike including Boston, the ice will turn to plain rain. However, cold temperatures will remain across the interior north and west of Rt 128 but especially I495 where there may be a light accretion of freezing rain. The storm will move out Thursday afternoon, followed by colder temperatures Thursday night which may lead to a flash freeze with any remaining moisture in the Boston area. Colder but drier weather will follow Friday and Saturday.
A similar storm may follow arriving Saturday night into early Sunday. This storm may take a slightly further south track and may be slightly colder. Therefore, we may receive slightly more snow and ice from this storm overnight Saturday into early Sunday. This too may also change to sleet and freezing rain into the city, and possibly plain rain if it warms up enough off of the ocean. Yet another storm may arrive a few days after Sunday. As I mentioned earlier in the post, I am closely monitoring the potential for a larger storm later next week. I will update everyone if conditions warrant regarding that potential storm.
Well, that’s about it for now! Time is short, but I will make time to keep everyone updated through the month with social media updates as needed. My next full posting may not happen until sometime early in March! In the meantime, keep the snow shovels and snow blowers on alert, as we enter Primetime snow season here in Boston!
~Be safe and thanks for reading! ~
Pete