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June pattern and forecast discussion


weathafella
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The widespread showers gave us one sprinkle (T) about 2 AM.  Coastal counties (except Penobscot) were the wet spots, though the midcoast got less than south coast and downeast.  Sullivan in Hancock got over 1.8".  Doubt that we get any of the isolated showers this afternoon, so dry until late week.  Yesterday finally reached 80, first time since May 22.

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1 hour ago, MJO812 said:

191 days until winter 

Maybe sooner per Burlington AFD (love when they add humor):

https://forecast.weather.gov/product.php?site=BTV&issuedby=BTV&product=AFD&format=CI&version=1&glossary=1

Models are coming into much better agreement as we
head into the weekend with a deep upper level low diving south
across the northeastern US. Did someone say June snow? Just kidding
but it does appear we could see 850 mb temperatures drop to 1-2
degrees C at the higher summits yielding a few cold rain showers.
The weekend appears to be highlighted by well below normal
temperatures with highs likely struggling to reach 70 degrees even
in the deeper valleys. By Monday, the forecast is really up in the
air as it looks like an omega block will develop with good upstream
blocking across the northern Atlantic. This will likely favor us
remaining entrenched in the upper level low with below normal
temperatures continuing into the first half of next week.
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11 minutes ago, klw said:

Maybe sooner per Burlington AFD (love when they add humor):

https://forecast.weather.gov/product.php?site=BTV&issuedby=BTV&product=AFD&format=CI&version=1&glossary=1

Models are coming into much better agreement as we
head into the weekend with a deep upper level low diving south
across the northeastern US. Did someone say June snow? Just kidding
but it does appear we could see 850 mb temperatures drop to 1-2
degrees C at the higher summits yielding a few cold rain showers.
The weekend appears to be highlighted by well below normal
temperatures with highs likely struggling to reach 70 degrees even
in the deeper valleys. By Monday, the forecast is really up in the
air as it looks like an omega block will develop with good upstream
blocking across the northern Atlantic. This will likely favor us
remaining entrenched in the upper level low with below normal
temperatures continuing into the first half of next week.

Huh? So we're not in a never-ending summer pattern?

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44 minutes ago, klw said:

Maybe sooner per Burlington AFD (love when they add humor):

https://forecast.weather.gov/product.php?site=BTV&issuedby=BTV&product=AFD&format=CI&version=1&glossary=1

Models are coming into much better agreement as we
head into the weekend with a deep upper level low diving south
across the northeastern US. Did someone say June snow? Just kidding
but it does appear we could see 850 mb temperatures drop to 1-2
degrees C at the higher summits yielding a few cold rain showers.
The weekend appears to be highlighted by well below normal
temperatures with highs likely struggling to reach 70 degrees even
in the deeper valleys. By Monday, the forecast is really up in the
air as it looks like an omega block will develop with good upstream
blocking across the northern Atlantic. This will likely favor us
remaining entrenched in the upper level low with below normal
temperatures continuing into the first half of next week.

12z GFS has some pockets of 0C 850s spinning through, ha.  Probably some snow on Mount Washington.

Two different cores rotating through.

gfs_T850_neus_23.thumb.png.9f8c3a4c713700f8d36741ae8fdfcd06.png

gfs_T850_neus_25.thumb.png.391912e77b7344b56108b28a55ac39bc.png

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4 minutes ago, SouthCoastMA said:

Surface it's still 70+ in southern new England during the day

Yeah the NW flow looks to keep SNE pretty nice... 60s and 70s.

Total disaster up here though, in the 40s both Saturday and Sunday at 18z.

If it's mid-40s at 18z Sunday afternoon that's absolutely miserable.  I think it'll modify a bit though for sure.

gfs_T2m_neus_26.thumb.png.732c3e31ef9217da736d47437aa36407.png

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7 minutes ago, SouthCoastMA said:

Surface it's still 70+ in southern new England both days. Sat mid 70s and Sun would be cooler, possibly only touching 70..worst case

I think with the cold pool of 546 thickness over us that 70 is a stretch.   Lots of clouds at peak heating time.  

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24 minutes ago, powderfreak said:

Yeah the NW flow looks to keep SNE pretty nice... 60s and 70s.

Total disaster up here though, in the 40s both Saturday and Sunday at 18z.

If it's mid-40s at 18z Sunday afternoon that's absolutely miserable.  I think it'll modify a bit though for sure.

gfs_T2m_neus_26.thumb.png.732c3e31ef9217da736d47437aa36407.png

Family vacations at Stowe and Jay Peak ending in divorces by Sunday night. Hate to see it.

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1 hour ago, powderfreak said:

Total disaster up here though, in the 40s both Saturday and Sunday at 18z.

If it's mid-40s at 18z Sunday afternoon that's absolutely miserable.  I think it'll modify a bit though for sure.

if the showers hold off that's pleasant hiking weather at least. Free hot cider and pumpkin muffins to kick off the season?

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3 hours ago, tamarack said:

The widespread showers gave us one sprinkle (T) about 2 AM.  Coastal counties (except Penobscot) were the wet spots, though the midcoast got less than south coast and downeast.  Sullivan in Hancock got over 1.8".  Doubt that we get any of the isolated showers this afternoon, so dry until late week.  Yesterday finally reached 80, first time since May 22.

My doubt was unfounded, as a TS (one lonely strike, though <2 mi distant) dumped 0.23" between 1:30 and 2, with more than half coming in 3-4 minutes a few minutes before 2.

If those frigid GFS temps for Sunday verify and are followed that night by clear and calm, we might be flirting with frost mere hours before the solstice.  :o

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