 FRIDAY: The key features of the day are a stalled frontal boundary over the region and another steamy day for most areas away from the shorelines. Heat indices climb into the 90s as far north as Bangor. Northern areas appear to be on the cloudier side due to the stationary front, which keeps them cooler. An isolated shower with a risk of a boomer is possible over the west, central, east, and north in the afternoon. It's a decent beach day for the south, but high tide cramps space later in the afternoon. Fog continues to be a pain further up the coast.  SATURDAY: Southern areas that have seen little to no rain have an opportunity to receive some. An area of low pressure near the Carolinas injects moisture into the stalled frontal boundary. The way the two interact is key to the potential for moderate to heavy rainfall and the risk of thunderstorms. The threat of showers increases as the morning progresses into the afternoon, with a dry slot working in. A weak cold front ascends from the northwest in the afternoon, which may bring pop-up showers and storms over the west and north and eventually shove the stalled boundary along the coast out to sea towards evening.  HEATWAVE WATCH SUNDAY INTO NEXT WEEK: As warm as it has been, most of the region has yet to experience a textbook heatwave of three consecutive days of actual high temperatures of ≥ 90°, and that may happen. I say most because Fryeburg managed to do it back in June during that blast. This time around, towns like Bangor, Augusta, Waterville, Lewiston, Fryeburg, and Sanford could take a run at the hat trick.
A BREAK IN THE HEAT LATER NEXT WEEK as blocking over the Atlantic begins to recede, allowing a stronger trough to work in. The risk of showers and thunderstorms comes ahead of the cooler, more comfortable airmass, with timing and severity to be fine-tuned as the week unfolds. Stay tuned! - Mike |
Mike Haggett
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