Weather pattern to become more active heading into the weekend

11/9/2021

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A weak front for Tuesday;
stalled boundary brings showers Tuesday night into early Wednesday

Northern and southern areas have the better chance to see the most sun for the day. A weak frontal boundary passes through the region and may bring a sprinkle to the higher elevations around midday. A shift in the wind to the northwest brings the warmest temperatures to the coast for the afternoon. Sixty degree or higher temperatures appear likely to become a rare commodity going forward.

Tuesday 8 PM - Wednesday 1 PM - The weak front that passes through the region Tuesday stalls to the south. A weak area of low-pressure rides along it and may bring some light rain or snow showers to the region Tuesday night into Wednesday morning. Accumulations are expected to be light, with perhaps a dusting of snow for the higher hilltops.

Next storm late week

Tuesday 7 PM - Saturday 1 PM - Colorado low season is in high gear. A shot of cold air from western Canada meets up with a forming frontal boundary just east of the Rockies and spins up a decent storm over the Midwest Wednesday into Thursday. An upper-level low captures the surface low Thursday night and weakens the storm on Friday. The timing of this occlusion is important to factoring precipitation amounts for the state Friday afternoon into early Saturday.

As the surface low intensifies, it taps into Gulf moisture and hauls it northeastward. A short kiss of the stream could bring spurts of heavy rain into the region Friday night.

Given the south / southeast wind flow with the frontal boundary, the western mountains and foothills could do well for rainfall amounts. The storm could bring some needed rainfall to the Rangeley Lakes region, but the higher hills may keep those areas a bit drier. Far northern areas may get clipped with snow or mixed precipitation as the storm departs Saturday morning.

The weekend looks like a 50/50 split, with Saturday being the better of the two days. A slow moving upper low to the north pinwheel's disturbances through the region Sunday and into early next week.

Temperature outlook through Sunday

The normal high and low for Caribou is 42° / 28°. For Portland, 51° / 34°. Temperatures are expected to run above normal overall through the weekend.

Snow watch

Seeing the cooler trend ahead gives validity for a chance for snow for the mountains heading toward the middle part of next week. Stay tuned for more on that as we get closer.

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► ► For the latest official forecasts, bulletins, and advisories, please check in with the National Weather Service in Gray for western and southern areas, or Caribou for northern and eastern parts of Maine.

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Stay updated, stay on alert, and stay safe!

- Mike

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