Upper-low hangs out like a housefly all week
A textbook 984mb pressure low over western Quebec that is slowly losing steam, but it is majestic to look at on water vapor imagery. The big hook shows its strength. The dry air working in shows that it has past maturity and is now in the decaying stage. There is blocking all around, so this will cause a slow demise, and hang round through late week
There will be some showers around eastern and northern areas for the day, but they are likely to be annoying spitters more than anything else. DownEast areas may get a bit more than that at times as moisture off the water may enhance rainfall activity a bit. For western and southern areas, it will be a mainly sunny day with a few clouds percolating as the warming of the day rises into cold air aloft.
Frost potential for western and southern areas Tuesday
For western and southern areas, any clouds around disappear this evening as the ground cools off. It's a tough call for the MidCoast and Capital District interior areas on cloud cover with the wave pushing through over the east. The bottom line here is where the sky clears out, radiational cooling sets up, and that brings frost. The National Weather Service Gray office is toying with the idea of frost / freeze bulletins for Tuesday morning.
IMPORTANT TO NOTE... Frost / freeze bulletins WILL NOT be issued for the western mountains, the north, and interior eastern areas as they have passed their mean average first frost dates. The western interior continues for a couple more days until October 11th. The shorelines up and down the coast along with interior MidCoast areas continues until October 21st.
For more information, please check out the frost / freeze program criteria for western and southern areas served by the Gray office and eastern and northern areas served by the Caribou office.
Outlook through the rest of the week
Tuesday appears mainly dry for all. Wednesday into Thursday sees a risk of showers, a sprinkle and /or a spitter as the upper-low to north slowly moves to the east and spins waves through. Northern areas may see a shower on Friday as the low finally leaves. Saturday looks decent for now, but there is potential for a storm heading into Sunday. There is about a 50/50 split with ensemble ideas at this point. Stay tuned for more information on this as the week unfolds.
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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.