Upper low spins through the region A few showers around the state as we kick off Labor Day weekend. The better chance is over the north and east. A sea breeze may pick up with the coming tide in the afternoon, but it appears limited to the shorelines. The upper low spins over the north, which keeps onshore flow muted.  Any rain is good rain at this point, given the drought and associated wildfire threat. At my location in Kennebunk, I received 0.6", which brought the monthly total to just under an inch. It won't be the driest month since I've kept records here (0.49" in September 2019). If you have a rain gauge or a weather station, please share your observations and location with me.  Saturday 6 AM to Sunday Midnight - Upper lows will do as they please. While models think in a certain way, the results may differ. My trust in them is similar to cold air damming in winter... slim to none. Given the cold air aloft, any sun that pokes through could warm the surface, potentially triggering a surprise shower. Be aware of that as you go about your day.  Similar to the results seen on Friday, localized heavier rainfall amounts are possible for the north and east. For the west and south, it will be sun-dependent.  Temperatures and outlook through Friday Recently, I mentioned the need for decent rainfall for the region in the form of a long-wave frontal boundary, and the precipitable water forecast supports this idea. This is what we want: slow-moving long waves that pump moisture in from the southwest, bringing steady rainfall without the drama of torrential downpours that cause severe runoff flooding and offer no help to the water table. This will help to chip away at the deficit. The mountains and north may experience light shower activity as weak waves pass through during the week, with better chances of precipitation on Wednesday and Thursday, and improved chances for rainfall everywhere later in the week.  The PTW Weather Wall updates 24/7 Your financial support keeps the lighthouse lit |
Mike Haggett
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