Jul 26, 2016 11:45 PM
NH1 FIRST ALERT WEATHER: Heat Wave & Drought Continues
NH1 Chief Meteorologist
Another very warm to hot day expected on Wednesday with weak high pressure sinking to the southwest of the region. The light westerly wind in will likely be weaker on Wednesday and should allow an afternoon seabreeze to form to provide some relief at the coastline during the afternoon. Meanwhile, inland will be sunny and hot with highs near 90-95 for the afternoon. The day will be dry with a moderate humidity, except perhaps near the Canadian border where there is a low prob of a very late afternoon shower or thunderstorm as a weak short wave trough approaches that area from the west.
This trough will help push a weak cold front across northern zones during Wednesday night and may allow for a few showers or spot thunderstorms during the night in the far north. Elsewhere, we will be dry all night long into Thursday. A weak cold front accompanied by showers and thunderstorms will drop south across the region Thursday and Thursday night. Partly sunny skies with hot and humid conditions will precede the frontal passage. I expect highs again on Thursday to range from 90-95 degrees. As the the front arrives during the afternoon a few heavier downpours will be possible with the potential for some localized severe weather.
As the front pushed through Thursday night it will eventually stall to the south of the area Friday as high pressure builds in from the north. A wave of low pressure will ride along this front stalled along the south coast of New England and provide the risk of some showers Friday. The steadiest rain will likely be in southern New England, and along the south coast. We will likely see about .10-.25" of rain if we are lucky Friday. Still with a front south of us and more clouds in place, Friday will be cooler with highs in the Lwr-mid 80's.
High pressure should hold over the region through most of the weekend as a frontal boundary remains just to our south. This will being a mix of sun and clouds, lower humidity and seasonal warmth in the lwr-mid 80's for the weekend into the start of next week. The dry conditions will continue for now...and likely for the rest of the summer. We are going to have to count on the Tropics to fire up and maybe get some tropical rains out of the pattern to get us out of this drought. We will need a solid 6-12" of rain to restore the groundwater to more normal levels.