Aug 11, 2015 12:01 AM
NH1 Weather Insider For Tuesday August 11, 2015
NH1 Chief Meteorologist
A strong line of heavy downpours, with a few embedded storms will be crossing from NY state into New England Tuesday. The morning commute will start of cloudy and dry. After 9 AM, rain will be quickly developing and spreading west to east across the state. The Heaviest rain will likely fall from 11 AM-4 PM. A strong core of winds in the mid levels of the atmosphere will be crossing through at that time as well. Some of these gusty winds may mix down in some of these downpours. Winds at the surface will be from the SE where winds may gust 20-30 mph. The combination of cooler onshore winds and incoming rain will make for a cooler day in the 60's and Lwr 70's. Rain will be heavy at times, with the potential for heavy downpours, embedded t'storms and localized flash flooding if any slow moving downpours continue to go over a certain spot. A general 1-2" of rain can be expected with this strong frontal passage. Showers will be diminishing Tuesday night, with mostly dry conditions overnight and patchy fog.
A cold front will push off the coast Wednesday, making for improved weather with partly sunny skies and warmer temperatures with SW winds with highs in the 70's and Lwr 80's. The only problem is the upper low in place across the Canadian border which will provide cooler air aloft and spin in a short wave to provide the necessary left to trigger the potential for a pop up shower or t'storm in the afternoon. Slightly cooler less humid air will be in place for Thursday with sunshine and highs in the 70's. Warmer air will return Friday with highs back into the lwr -mid 80' and a nice way to kick off the mid August weekend.
Another trough will return to New England for the weekend. This may spin back in another piece of energy to trigger a late day shower or thunderstorm Friday. More importantly, we will have to watch Saturday. A slow moving cold front will be crossing the region which will likely mean scattered showers and thunderstorms. The front may even stall over us this weekend with a steady light flow of wind from the SW just our heads. It is too early to have confidence how this weekend will ultimately play out, but it appears Saturday will be the more unsettled of the two weekend days, with Sunday being the drier of the two. Temperatures will be seasonally normal for this time of year...ranging around 80-85 degrees. Temperatures will be in the mid 80's to start off next week, and we will likely really start to warm up with another chance at 90+ one we get around August 20th thereafter...