Synopsis: It almost felt like spring to some across the area today. However, to put this into perspective as to how cold it’s been, temperatures today were still a solid 5-10 degrees below normal, and we’re coming off a moderate to significant snowfall. High pressure will move over the area tonight and offshore tomorrow, which will allow a storm system to track up to our west and bring the next wintry threat to Connecticut.
Tonight: Temperatures will plunge once again into the single digits across much of the state, with low teens across the south coast. Skies will be clear with light winds, and with fresh deep snowcover, will allow for nearly perfect radiational cooling conditions. As a result, we’ll see lows drop into the teens tonight, as shown here on the Hi-res NAM model.
Wed night/Thur: Call it Round Two if you will. Although technically a separate storm, this storm would not exist without the first one, so it is related to the first storm, although it’s not “backlash” and is its own entity. A storm system will form along a stalling frontal boundary. Light rain will quickly change to sleet and then snow during the evening rush hour on Wednesday. Some sleet may accumulate before changing over to snow. I don’t want to get into amounts because we are only issuing a map for event one, but with bonafide Arctic air heading in and a true coastal wave of low pressure developing, accumulations could be significant. Snow winds down Thursday afternoon. Here’s a look at this storm on the GFS and NAM models, showing the differences in the placement of the front and hence precipitation distribution and rain/snow line. In general, leaning towards a consensus of the models for this forecast that favors a scenario similar to the one described above.
Next weekend looks quiet, with moderating temperatures. Another cold front approaches Monday with some snow showers possible, but this system does not appear to have much moisture with it at this time.
Keep an eye out for updates beginning tomorrow afternoon with the onset of snow and continuing throughout the evening as needed, as well as for a first call map for snows Wednesday night into Thursday. Thank you for reading Southern Connecticut Weather!