Long-Range Forecast – December 8

The weather pattern this week will be dominated by the slow-moving storm that will bring strong winds and heavy rain on Tuesday. While the storm will not be nearly as fierce Wednesday and Thursday, it will still be close enough for scattered rain showers on Wednesday, and rain or snow showers on Thursday. In fact, it may not be until midday Saturday before the storm finally moves offshore and high pressure begins to move in from the west. The weekend looks relatively quiet, with highs in the 40s.

Looking ahead to next week, the odds favor fairly quiet weather. A developing system will probably stay far enough south and east of New England that it does not bring substantial snow/rain in the midweek. Overall, it looks like the storm track will be suppressed to the south, and the weather over New England will be warmer than normal, but not as warm as the Midwest. If the midweek storm next week stays south, than there could be a 8-10 day stretch of dry and seasonably mild weather to take us to around December 20-22. There are still signs that it will turn colder and stormier after Christmas through the New Year.

Long-Range Forecast – December 4

All eyes will be on a potential storm early next week. There will not be a lot of cold air around, and, right now, we are favoring rain and wind in Rhode Island and Southeastern Massachusetts Monday night through Tuesday. After that storm passes, there may be an extended stretch of dry weather that lasts through most of mid-December. In addition, it does not look like it will be terribly cold, and will most likely be warmer than normal for this time of the year. It’s not too long before normal highs are only near 40, and normal lows are 25. Odds are most days will be in the 40s between Dec 10-20.

Southern New England 2014-2015 Winter Outlook

November weather can be a pretty good indicator of what kind of winter it will be in Southern New England. If it is this year, then get set for a harsh winter in New England because November was cold, wet, and snowy. While we do not think the upcoming winter will be as cold (relative to normal) as November was, we expect it to be stormy and snowy. It looks like December will actually be a relatively mild month before it turns seasonably cold in January and February.

There is a slight chance that El Niño develops this winter, but even if it does not, there will still likely be enough of an influence on the southern branch of the jet stream to allow for an active storm track across the Southeastern United States. Last winter featured many small winter weather events. We think there is a better chance of bigger storms moving through this winter. As always, precipitation type will be an issue in Southern New England with these storms, so we are not going bonkers with our snow forecast. There is usually around 35″ of snow in the Providence area, so a forecast of 100-150% of normal is for about 35-50″ of snow.

The confidence level is fairly high that it will not be a dry winter. There is less certainty about the temperature, and if the pattern reverts to what it was in November by late in December or early January, than it could be colder than our forecast of slightly warmer than normal conditions for the season.

Long-Range Forecast – December 1

December is off to a very warm start with the temperature soaring into the 60s on Monday. However, the theme of the first week of the month will be a rollercoaster ride, with much colder weather ahead for Tuesday. The temperature may be 30° colder in some spots from noon Monday to noon Tuesday. In fact, there will likely be some snow and mixed precipitation around Tuesday evening before a change to cool rain showers later Tuesday night. The temperature will climb again on Wednesday, and could flirt with 60 again if there is enough sunshine.

It will be seasonably cool and dry late in the workweek. We’re keeping our eye on the potential for chilly rain showers sometime between Saturday and Monday. In a worst-case scenario, all three days will feature some rain. A best-case scenario has the showers holding off through the weekend.

The middle of next week looks dry, with gradually moderating temperatures toward the end of the week. Aside from the light snow/mix possible Tuesday evening, there is not much wintry precipitation in the forecast for the next 10-14 days. Overall, it looks like it will be a relatively wet month, so we’ll have to watch for another storm around the second weekend of December.

Long-Range Forecast – November 27

November will go in the books in a few days as cool and wet in Southern New England. December, however, will most likely begin with near or above normal temperatures and near precipitation in the first ten days of the month. While we will see some rain from time to time in the first third of the month, it does not look like there will be many big snow threats. In fact, we could get a break from the bigger storms that we saw in November – at least for a little while.

The weather will be quiet and get warmer early next week. A cold front will move through in the midweek bringing rain showers then colder weather. Another system may threaten with rain late next week, and that’s a theme that will most likely carry into the following week. Up and down temperatures with occasional weather systems that pass west of Southern New England, keeping rain instead of snow in the forecast.

Long-Range Forecast – November 24

November has been cold and stormy in the Northeastern United States. Just in time for pre-Thanksgiving travel, there will be another cold and stormy day on Wednesday. If you have followed our forecast, you know that we are favoring cold rain or mixed precipitation over heavy accumulating snow in the I-95 corridor. This is the Long-Range Forecast, so we’ll skip over that storm and get to the weather through the weekend and next week.

It will be cold and dry from Thursday afternoon through Saturday afternoon. Friday looks like the coldest day with highs only in the 30s – even with sunshine. Lows may dip into the teens to low 20s Saturday morning, but it will bounce back to the low 40s in the afternoon. That will be the start of a warm-up that lasts into early next week. Sunday and Monday may reach the 50s. The weather will likely stay quiet through the middle of next week as a storm system slowly takes shape over the central United States. That storm will eventually bring rain to Southern New England, but it may not be until the end of next workweek or the weekend. Temperature-wise, it will be at or above normal for most or all of next week. November will end with an average temperature 2-3° colder than normal, but it does not look like December will start the same way. The temperature should be above normal for the first half of the month.

Computer Model Trends – Pre-Thanksgiving Storm

For RI Clients

It looks like there will be inclement weather in at least part of the Northeast on the Wednesday before Thanksgiving. A storm developing off the Southeast coast will move off the New England coast by Wednesday night, and potentially bring moderate to heavy precipitation and strong winds. At this point, we are leaning toward a cold rain scenario for all of Southeastern New England because of the lack of available sub-freezing air, the time of year, and a favored storm track that is a little too close for snow. Based on the current computer model trends, we think the best chance of snow is west of Worcester in the Berkshires.

Interestingly, the model that hits Southern New England the hardest, the ECMWF (European), will probably generate the most hype for a potential blockbuster snowstorm, even though when analyzed closely it is a rainstorm for most or all the area. The track of the storm on the ECMWF is too close to shore, and a surge of mild air invades at the same time as the heaviest precipitation. It would be a nasty night with wind and rain, but snow would not be an issue.

Most other models are farther east with the storm track, and that allows for slightly colder air to get involved. In my estimation, even those models are not lining up for a significant snow event. It’s too early, however, to say it will not happen, because there is a solution between the ECMWF and most other models that would bring a large, intense storm just far enough offshore to lock in the cold weather and allow for an early season snowstorm in the I-95 corridor. Right now, however, that seems unlikely. We are leaning toward a storm that hugs the coast and brings heavy rain and gusty wind Wednesday night before ending around dawn on Thanksgiving. If that happens, any football games played on natural grass Thursday morning could be severely affected by flooded fields.

For NH Clients

There is a better chance that there will be snow in your area, but we are still leaning toward a mainly rain storm based on the track and consistency of the ECMWF model.

The UKMET model hints at the storm.

The UKMET model hints at the storm.

More data from the ECMWF Ensembles that could be misinterpreted and taken at face value.

More data from the ECMWF Ensembles that could be misinterpreted and taken at face value.

The precipitation potential from most ECMWF is fairly impressive. 2-3 inches of liquid precipitation may happen between Sunday night and Wednesday night.

The precipitation potential from most ECMWF is fairly impressive. 2-3 inches of liquid precipitation may happen between Sunday night and Wednesday night.

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The different low pressure tracks of the ECMWF Ensemble members. Most are too close to the coast for snow at this time of the year.

The different low pressure tracks of the ECMWF Ensemble members. Most are too close to the coast for snow at this time of the year.

The snow algorithm used to create this map has some issues. Based on the temperature, there is no way a foot of snow would accumulate just west of the I-95 corridor. In the Berkshires, maybe, but not in RI or E MA.

The snow algorithm used to create this map has some issues. Based on the temperature, there is no way a foot of snow would accumulate just west of the I-95 corridor. In the Berkshires, maybe, but not in RI or E MA.

A surge of very mild air at 5000 ft. makes it into most of Southern New England during the heaviest precipitation.

A surge of very mild air at 5000 ft. makes it into most of Southern New England during the heaviest precipitation.

The ECMWF model has heavy precipitation Wednesday evening. Notice the 35 and 32 degree contours well inland.

The ECMWF model has heavy precipitation Wednesday evening. Notice the 35 and 32 degree contours well inland.

The Canadian ensemble members are generally weaker and farther out to sea than what we are expecting.

The Canadian ensemble members are generally weaker and farther out to sea than what we are expecting.

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Long-Range Forecast – November 20

It has been quite a month in the United States. The temperature for the lower 48 states is averaging about 5° below normal for the month, and, of course, the lake-effect snow in New York has been incredible. It has been cold in New England, but not as cold as most of the rest of the country. The chilly weather will stick around into the weekend before a warm-up into next week. Rain will come with the warmer weather on Sunday night into Monday. Right now, Tuesday looks like a decent day.

We’re watching the potential for a storm or at least showers on Wednesday. It’s tough to say if it will stay offshore or come close enough for cold rain and, possibly, some snow inland. Thanksgiving looks dry and cool, but not brutally cold.

The forecast becomes highly uncertain (see the video) late next week into early December. We’re leaning toward more cold weather and possibly a couple of storm threats, but the models are divided on how the pattern will evolve. I’d be surprised if it is warmer than normal next weekend. Eventually, after the first week or so of December, this generally cold pattern could temporarily thaw.

Long-Range Forecast – November 17

The coldest weather in nearly eight months is heading for New England in the middle of the week. Highs will struggle to reach 35 on Wednesday – even with some sunshine. There could be snow showers or flurries as warmer air tries to arrive late Wednesday night. The temperature should reach the 40s on Thursday before a reinforcing cold shot arrives for Friday into the weekend.

Highs may not make it out of the 30s again on Saturday. Sunday looks milder, with highs in the 40s to possibly low 50s with enough sunshine. The next storm that will hit Southern New England will likely bring rain and mild weather early next week. Unlike this week, there could be a second storm that follows on the heels of the first, bringing more rain in the middle of the week. The track and development of the second storm is still in question, and we’ll be watching the trends closely.

Looking ahead to Thanksgiving, right now it looks dry and cool, but not brutally cold. The general trend of cold/dry weather followed by wet/mild weather may continue into early December.

Long-Range Forecast – November 13

The cold weather in the Plains and eastern slopes of the Rockies is quite remarkable for any time of the year, and almost unprecedented in mid November. Record low temperatures were smashed by several degrees in Colorado and Wyoming. Fortunately, the brunt of the cold weather will not reach New England, but it will be rather chilly for the next week.

The cold snap begins with a touch of snow early Friday. After that, it will be dry from midday Friday into Monday before the next system bring mainly or all rain as it passes over or very close to Southern New England. Highs will only be in the 30s to low 40s over the weekend. Lows will be in the 20s.

The rain on Monday into early Tuesday will be followed by another surge of cold and dry weather in the middle of next week. Highs will probably not reach 40 on Wednesday. It looks like it will stay on the cool side through next weekend, and a bit of snow is possible next weekend. After that, the cold should ease up during Thanksgiving week. There may be a storm that brings rain sometime between the Wednesday before and weekend after Thanksgiving. The overall pattern looks to stay fairly active, but not brutally cold through early December.