 A BIT DRIER, BUT HOTTER FOR SUNDAY: With the frontal passage Saturday afternoon, dew points dropped nearly 10° in some locations, taking the edge off the humidity to start off. However, it will still be noticeable, especially along the coastal plain with the ocean influence, with a few areas potentially taking a run at the 70° level in the afternoon as the sea breeze kicks in.
At that point, many coastal towns are expected to see high temperatures climb into the 80s and kiss 90° (Portland) before the sea breeze cools the shorelines off. Model ideas vary regarding how far inland the sea breeze goes and when, but there is fair confidence it could move 20-30 miles inland by late afternoon/early evening, which will bring cooling relief there. The day is expected to be mainly dry, outside of the risk of a popup shower over the higher elevations. No thunderstorms are expected. A large fog bank is expected to develop over the Gulf of Maine. DownEast and MidCoast areas, take note. The southwest shorelines may deal with fog in the early evening. This is one part of the forecast where confidence is low because fog has a mind of its own. HEAT INDICES CLIMB INTO THE MID-90s TO LOW 100s MONDAY AND TUESDAY as dew points climb into the 70s over southern and central areas. Expect heat advisories and poor air quality alerts. Stay in touch with the Maine Emergency Management Agency (MEMA) for cooling center openings if you need one. The seaside beaches are likely to be loaded with favorable low tides midday. ISOLATED STORM THREATS FOR MONDAY AND TUESDAY as shortwaves passing through begin to chip away at the offshore ridge. This will juice the atmosphere more as a southwest flow increases moisture, raising dew points and bringing in more high-octane fuel for storm development. While the risk on Monday is very low, Tuesday may be a bit more concerning. The NOAA NWS Storm Prediction Center has flagged northern New England at marginal risk for severe storms. Stay tuned for more on that threat. FRONTAL BOUNDARY ON THE WAY WEDNESDAY INTO THURSDAY to cool us off. The timing of its arrival and its potential impacts are still to be ironed out. Compared to what the region has experienced recently, next weekend looks wonderful, with comfortable temperatures and humidity levels. PTW is a labor of love, but it does not happen without your help. I would appreciate your financial support as I prepare for my fourteenth year in 2025 ► https://www.pinetreeweather.com/donate.html Thank you for being the best followers. I appreciate each of you. Stay cool! -Mike |
Mike Haggett
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