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A few storms overnight with more humidity

Posted by David Epstein  August 15, 2012 06:54 PM

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There are few storms this evening and I will watch the radar throughout the night to see if any more storms do develop. If we get storms overnight they, like the ones this morning, could have torrential rain and vivid lightning. The storms overnight will be scattered and tend to move out of the area by Thursday morning. There could be a leftover showers over extreme eastern areas at sunup but the trend will be for improving conditions early tomorrow. Come connect with me on Twitter at @growingwisdom

Tonight will be warm and muggy along with the chance for showers throughout the overnight. Temperatures will fall to the 60s, but with the moisture in the air it will feel uncomfortable much of the night.

Thursday
Tomorrow will be a good day, not perfect, but nice. It will be warm and moderately humid and there is the risk for a shower or storm in some towns. I am not expecting widespread activity so don't cancel any plans. Highs will again be in the 80s.

Friday will be the best day of the next few with mostly sunny skies, warm conditions and light winds. There isn't much of a risk of showers on Friday so any outdoor plans should go off without a hitch. Temperatures will reach to between 85F and 90F inland but remain in the lower 80s at the coast.

The weekend
Another front pushes through the area Friday night and Saturday with again the risk of an hour or two of showers. There will be more clouds during this time and temperatures, with the lack of sunshine will be few degrees cooler but still warm. As long as the front keeps moving Sunday will be a better day with sun and clouds, less humidity and typical mid-August temperatures.

Losing sunlight
We are about to flip to the other side of August and weather wise this means changes. Now, it's not as if fall is going come in on the 16th of the month, but daylight is rapidly diminishing and this will have profound affects on our weather. In northern Canada there is a small town called Resolute. Since May, Resolute has enjoyed 24 hours of daylight. In the next 15 days they will lose over 7 hours of that light and by mid-September sunrise and sunset will grow closer together for a loss of another 5 hours. The loss of the sun means temperatures will cool there as well as across the rest of the northern parts of our hemisphere. I am fascinated by Resolute. Temperatures today are in the 30s with periods of cold and snow. Although it may still warm into the 40s this month, the temperature trend is heading lower. You might ask, what the heck does that have to do with us? As colder air builds to the north it will be help to push the jet stream further south. As the jet stream moves south, our air cools, we lose humidity and we generally get a bit stormier. It takes, depending on the year, about 8 to 10 weeks for that jet stream to move more permanently into our area. Once that happens fall and even winter arrive. Last year, the jet stream rarely moved south but this winter I expect that to not be the case. More on the winter forecast in the next couple of weeks.

Gardening this week
Mid-August starts to allow gardeners to make some changes in the garden. Over the next few weeks you can begin to move perennials, reseed the lawn and dig up some shrubs. If the heat is still extreme, wait until the hot weather passes before starting your late summer and fall projects.

I'd love to hear your thoughts on this blog or any others. Please follow me on Twitter at @growingwisdom and check out my latest videos at GrowingWisdom.com

This blog is not written or edited by Boston.com or the Boston Globe.
The author is solely responsible for the content.

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About the author

David Epstein has been a professional meteorologist and horticulturalist for three decades. David spent 16 years at WCVB in Boston and currently freelances for WGME in Portland, ME. In 2006, More »
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