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A brief touch of fall on the way

Posted by David Epstein  August 4, 2013 09:26 AM

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Some cool air from the far north is headed to the region tonight and will linger into Tuesday morning. We haven’t broken a record for cold in August since 1986 here in Boston. You have to go back to 1972 to find a record low temperature that was set in the first week of the month. Cool in early August isn’t January so the records are in the upper 40s and 50s.

In the general forecast, today through Wednesday will feature a lot of sunshine. There is the risk for a pop-up storm this afternoon, but most of you will not see anything.Highs will be mostly in the 70s warming a bit by Wednesday.I'll be updating the details of the weather on Twitter at @growingwisdom Please follow me there. Feel free to comment or ask questions too.

The records for Monday morning are below. Nonetheless, it is going to feel like fall around here for a few hours both tomorrow and Tuesday morning.

BOS...54...1972
PVD...51...1972
BDL...47...1972
ORH...48...1929

The reason for the chill lies in the configuration of the upper level winds. When I write upper level, I am taking about winds from about 10,000 to 30,000 feet high in the atmosphere. The flow at this level will come straight from the far northern reaches of the planet where even this time of the year it can snow. The temperature this morning in Resolute, which is in the Nunavut section of Canada was in the lower 30s.
cool air from north.png

What happens to that air as it travels southward is that it modified and by the time it reaches our area it’s much warmer. This process works all year long and is why the air here is never as cold as the source region is comes from.

Although it won’t be very warm, it is going to be very sunny. The next few days will be spectacular not only to look at, but to be outside. With dew points in the lower 50s the air will feel delightful and it won’t be too warm to even go for a midday run.

A weather system will move through the region later Wednesday and part of Thursday. This brings more clouds, an increase in humidity and the chance for some rain. The end of the week should see a return to drier and seasonable temperatures.

Tropical activity is very quiet right now and this doesn’t look to change this week. During an average year the peak of tropical activity is from the end of August through September. Ocean water is running warm and if there was a tropical system in our area, it could remain quite strong. That said, there are so many variables that come into play with these types of systems the best advice is to just have a plan on the back burner in case something does occur.
Gardening this week
If you have a sunny spot and a good size container, how about planting carrots? Carrots can be successfully grown in containers and you will be surprised how many you will get. One of the most important things is to not over water the soil. Check out the video below showing how I recently planted a container of carrots.

I'll be updating the details of the weather on Twitter at @growingwisdom Please follow me there. Feel free to comment or ask questions too.

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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