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June 15th, 2023

6/15/2023

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A better chance for isolated storms Thursday

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A bit more sun, which means it will be a bit warmer, and with the upper-low hanging over the region, a better chance of showers and storms for the day. The coastal plain sees dew points climb into the low to mid-60s, the mountains and north a bit drier in the mid to upper 50s. Fog may be stubborn in departure once again for the shorelines of MidCoast and DownEast areas. The southwest coast can expect a sea breeze to pick up around midday.
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Thursday 6 AM to Friday Midnight - The presence of the upper-low overhead can be easily seen with the rotation of modeled precipitation. As the low shifts to the east, showers and isolated storms drop down from the north/northwest in the afternoon into the evening. The chance for severe storms is very low. Locally heavy rain and a puff of wind is the main concern with any storm, along with potential for small hail. 

After sunset, the atmosphere cools, and showers and storms dissipate heading into Friday morning. Expect areas of patchy fog over the interior, and potential for fog along the coast from the MidCoast and DownEast areas.

Showers and storms again on Friday,
​and the return of smoke

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Friday 9 AM to Saturday 2 AM - After a mainly dry morning, the atmosphere begins to heat up. The instability of the departing upper-low gets entangled with another upper-low coming in on its heels. A surface low spins up ahead of the approaching upper-low and touches off another round of showers and isolated storms over the region. There is a bit more juice to work with under this set up, which increases the chance for locally heavy rain which may cause ponding on roadways and poor drainage flooding. Showers along with the risk of a rumble continue into Friday night into Saturday morning.
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Friday 2 AM to Saturday 2 AM - With the departure of the upper-low that has been over us this week, it will shift the wind to the northwest and bring the return of smoke from the wildfires occurring in the Abitibi region of Quebec. This will bring hazy conditions to the sky and may affect air quality. You can stay updated on the air quality forecast issued by the Maine Department of Environmental Protection.

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​Lightning strikes the U.S. 25 million times a year, which sometimes results in death or permanent injury. You are safest indoors or inside a hard-topped enclosed vehicle. Stay Weather-Ready and learn more about lightning safety: weather.gov/safety/lightning

Off and on showers and storms through the weekend

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Saturday 2 AM to Monday 8 AM - The surface low that spins up ahead of the next upper-low to work in slowly works its way through the region over the weekend. Saturday appears to be the rainier of the two days. A drier window appears for southern areas to start Sunday, but all areas can expect a shower with a chance for a storm Sunday afternoon.

As the lows depart, a dry stretch begins on Monday. There is some uncertainty in how the strong ridge building over Hudson Bay interacts with a developing cut-off upper-low over the southeast, so how long the region stays dry is a question mark for now. 

After a cool start to next week, temperatures gradually build heading into next weekend. 
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- Mike

​NOTE: The forecast information depicted on this platform is for general information purposes only for the public and is not designed or intended for commercial use. For those seeking pinpoint weather information for business operations, you should use a private sector source. For information about where to find commercial forecasters to assist your business, please message me and I will be happy to help you.

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    Mike Haggett
    Kennebunk, ME

    Weather-Ready Nation
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    Penn State '21

    American Meteorological Society

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    Matthew 19:26



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