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June nor'easter to continue overnight

Posted by David Epstein  June 4, 2012 09:45 PM

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October 2011, June 2012, two nor'easters, two atypical storms. Overnight, our large ocean storm will slowly pull to the northeast. However, the winds and seas are strong and high enough to produce coastal flooding at the time of high tide around midnight. Computer models are predicting there to be a 1.3 foot storm surge north of Boston and up to a 1.8 foot surge to the south, along the Cape and Islands. flood.jpg Seas offshore will be as high as 15 feet, much less than other storms, but significant in the recent period of relativity few nor'easters. There has been issues related to the storm with power outages and some basement flooding. If you had problems at last nights high tide, you probably will again tonight.

After a March-like day we are going to have a raw and windy night with periodic showers. I am forecast the heaviest showers before midnight, but even after that there will be some areas of rain moving through around a very slow moving storm to our east. This storm, a true June nor'easter has produced several inches of snow atop Mount Washington, not unprecedented for June, but a bit unusual. Many inches, up to eight, has fallen across Maine where some roads are washed out and golf courses have been turned into lakes. Tomorrow is looking like more of the same but the rain will be lighter. I do think you could see the sun trying to come out in the afternoon as well. I send out tweet updates throughout the day so if you like instant weather tips, please follow me on Twitter at @growingwisdom

Tuesday

When storms become stuck in one place they spin around like a top. The moisture and clouds also spin along with the flow. This latest storm, eventually, will spin itself to death by pulling in drier air from the edges of itself at the same time it is moving further out to sea.

On the jet stream map below, I drew some arrows to show how the winds are blowing up at around 30,000 feet. The issue is that those winds steer storms at the ground. We have an ocean storm caught beneath that flow. That storm is represented by the L on the map labeled "next few days". next few.jpgSo, if the storm is under the whirling air above it it just keeps rotating around and around. Each time to rotates, areas of clouds and showers move into our area from the north east. You can see how the rain is moving down the coastline from Maine in the radar image under the jet stream picture.

jets.jpg

rad_nde_loop.gif
Late week and upcoming weekend
By Thursday and Friday, the drier air will be more prevalent and the chance of showers will diminish. You are still going to see the word showers in the forecast from many media outlets, but they are going to be very isolated, short-lived and rather insignificant. Temperatures will also return to what you would expect for early June, the lower 70s.

As of now, the weekend is looking stellar with sunshine and temperatures in the upper 70s and lower 80s. After all the wet cool weather of the start of the week, this weekend is going to seem like a wonderful change. The warmer air will remain with us into next week as well.

jet weekend.jpg

North Atlantic Oscillation (NAO)
The NAO is that persistent pressure pattern out in the Atlantic that has a major affect on our weather. Interestingly it is flipping to a negative phase, something we rarely have seen in months. (part of the reason no snow last winter) This flip will, at least in the short-term, turn our weather a bit cooler than normal and somewhat on the damp side as well. How long this lasts is unsure, but as we head into summer this could be a major player in our overall weather.

Pollen and drought

Not that you need me for this, but....the drought is officially over for now. As a matter of fact, much of the country has seen an improvement in the drought situation. Florida and the southwest part of the US are still having major issues however. You can see who is in severe drought on the map below. We are now in the normal range.
drought.jpg

Gardening Tip of the Week

On of my favorite activities in the summer is watching the hummingbirds or the hummers as some affectionately call them. Hummingbirds are easy to attract to your garden and are a fun way to get kids to explore nature. In this video below I show you everything you need to know to attract these little guys to your garden.

Remember, 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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