Berkshire County Forecast-Wednesday,December 12

The following forecast is provided by Tyler Virgilio, in conjunction with the  instructor, as part of lab work for the Introduction to Meteorology course:

Summary: A surface high pressure system will crest over the region, giving us fair, dry weather with light winds for the next few days. Temperatures will be seasonable for this time of year although it will be slightly milder on Friday as high pressure shifts to our east and a west-southwesterly breeze brings milder air into the region.

The long range models continue to suggest that our weather will get more interesting over the weekend and, particularly, next week. A weak surface low pressure system moving along a weak, zonal jet stream may give us a few inches of wet snow on Sunday. Then, the jet stream wave pattern becomes more amplified and it appears a strong coastal low will likely impact us sometime Tuesday night through Thursday next week. Both the GFS and ECMWF models show a deep, slowly moving suface low pressure system in a similar location, off the New Jersey coast, during that time period. Despite the fact that this is still nearly a week away, the forecast has a greater than normal confidence level since the models have been consistent over several runs now. It is too early to make any predictions as to precipitation type. The track of the low off the coast, to our south and east, would suggest a big snowstorm. However, at this point, it does not appear that the storm will have a lot of cold air available so that if the storm hugs the coast we may get a mixture of frozen precipitation. This long range outlook will be updated Friday……

Wednesday Night

Mostly clear, calm and seasonably cold.

Low temperatures in the low 20s in most locations.

Winds will be calm.

Thursday

Mostly sunny.

High temperatures in the upper 30s in Pittsfield, near 40 in Adams, North Adams and Williamstown, low 40s in Great Barrington and Sheffield, and mid 30s in the elevated terrain and hilltowns.

Winds light and variable.

Thursday Night

Mostly clear, calm and seasonably cold.

Low temperatures again in the low 20s.

Calm winds.

Friday

Mostly sunny and milder.

High temperatures will be above average for this time of year. High temperatures in the low to mid 40s in Pittsfield, Adams, North Adams and Williamstown, mid 40s in Great Barrington and             Sheffield, and near 40 to low 40s over the elevated terrain and hilltowns.

Light west-southwesterly winds in the morning increasing to 8 to 12 mph in the afternoon.