Oct 13, 2016 9:44 PM
NH1 First Alert Weather: Brief Cool Down in a Mild Pattern
NH1 Chief Meteorologist
High pressure will be centered just west of northern New England Friday and will be keeping a cooler breezy NW wind in place. The cooler airmass will moderate but high temperatures will still be about 10 degrees cooler than they were Thursday. A beautiful sunny day will highlight the developing fall foliage across the region. Friday night will be the coldest night so far this season for many people with high pressure overhead generating light/calm winds and clear skies. This along with the dry airmass will result in widespread frost and freezing temperatures in the 20s with a couple spots near 30 degrees along the coast. This would end the growing season for the few remaining counties that have not yet dipped below the freezing mark.
EARLY SATURDAY MORNING'S LOW TEMPERATURES
After the frosty start Saturday, we begin the period with high pressure cresting across the region. Sunshine with a lighter wind will make for a more comfortable day with temperatures slightly below normal with highs in the 50's near 60... with light winds turning onshore by afternoon. It`ll be another chilly night under clear skies and light winds Saturday night...but on average a degree or two warmer then Friday night. On Sunday...a sunny start with milder return SW wind around the offshore high allowing temperatures to recover to the mid-upper 60s by afternoon.
Our next shortwave approaches from the Great Lakes by late Sunday. The associated surface cold front will bring increasing clouds and a chance of showers towards evening over northern and mountain sections. The front will cross the area Sunday night and early Monday with clouds and a few showers. Model handling of individual shortwaves diverges thereafter. However...all the guidance hint at at least some unsettled weather for the first half of the work week as a series of shortwaves and associated surface disturbances cross the forecast area. There remains disagreement about exact timing and strength of individual shortwaves next week. I am not expecting any heavy rain, mostly just a few scattered passing showers from time to time with any passing front. Temperatures will continue average above normal for the remainder of the period as the jet stream position will remain to our north. A mild pattern for the eastern half of the nation should last right through about October 24th.
FALL FOLIAGE CONDITIONS