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September banter/boredom thread


CoastalWx

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Since everyone else has chimed in about departures in September so far, I figured I'd add the BTV climate sites from Vermont to round out New England...

Burlington...+1.8F (-0.3F over the past 12 days with 1 day with a low in the 30s)

Morrisville-Stowe...+0.6F (-2.0F over the past 12 days with 6 days of lows in the 30s)

Montpelier...-0.3F (-2.8F over the last 12 days with 5 days of lows in the 30s)

Saint Johnsbury...-2.0F (-4.3F over the past 12 days with 4 days of lows in the 30s) *I'm skeptical of the 1V4 departures but that's what the F6 says.

I take away a few things from these stats... first off, the the first week of the month was a torch (departure wise) but a lot of that was due to high minimum temperatures. For example, at Morrisville-Stowe Airport at the beginning of the month, we had one day that was 83/42 for a total departure of +1F. The high of 83F is warm, but a 41 degree drop to 42F for the low was equally as cold relative to normal. In the following days, we torched at night and the lows were 60F, 58F, 58F for a +11, +9, +9 on the dailies.

The cold overnight temperatures over the last 12 days have definitely played a big role in our temperature departures being so cold since the 8th. Even with some warm daytime temperatures we have been able to come away with negative departures, such as on September 17th when here at MVL the high was a warm 78F, but the low was 34F (a nice 44F diurnal change). 5 of the last 6 mornings have seen lows in the 30s: 39F, 35F, 36F, 45F, 34F, 36F.

Given the upcoming pattern, I expect that all the interior VT mountain valley sites finish September below normal (BTV in the CPV will be above). I'd love to see a composite of departures across New England from June 1st to now... as I bet this area has been one of the cooler spots since June 1 relative to normal across New England. When SNE was torching in July, this area was near normal with MPV/1V4 below normal, mostly thanks to overnight mins and a lot of mornings in the 40s.

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I wonder what the earliest recorded snowfall in SNE was?

Besides Magic Land of course

ORH put up a trace on 9/30/92...I actually was outside when it happened that day.

I am unaware of any official measurable snow in September in SNE...though I'm sure it has happened going back far. Might need to go back 400 or 500 years though, lol.

The earliest measurable in SNE I am aware of is 10/4/87 which was a huge storm in the Taconics down to NW CT and even in the Hudson Valley.

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ORH put up a trace on 9/30/92...I actually was outside when it happened that day.

I am unaware of any official measurable snow in September in SNE...though I'm sure it has happened going back far. Might need to go back 400 or 500 years though, lol.

The earliest measurable in SNE I am aware of is 10/4/87 which was a huge storm in the Taconics down to NW CT and even in the Hudson Valley.

I bet I can come up with the date of the earliest 2' storm in SNE.......

Low clouds this morning even here at work. definitely did not expect that.

Yeah, pretty murkey. Hopefully can keep in the 60's and be finished with the 70's for good.

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Riddle me this...why was this morning my coldest of the season in a WAA regime? 45.7 was the low with breath visible during my run..I could see thick fog in the valley while the sun was shining brightly above on the hills where i was.

Was there some kind of cool air inversion around 800-1,000 feet?

You cooled off right before the clouds and inv came in. You are surprisingly cooler than ORH.

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It's possible you cooled a little more as compared to ORH because you did not fog in. But, that's kind of weird to see that discrepancy. That's like GC magic right there.

It's almost like I radiated lol. It was dead calm..and maybe with the inversion lower..i actually was able to radiate?? Does that even make sense?

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It's almost like I radiated lol. It was dead calm..and maybe with the inversion lower..i actually was able to radiate?? Does that even make sense?

Well the inversion was above you....the fog was probably typical valley fog I guess. You probably just slowly cooler enough given the cool temps yesterday aftn.

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It's almost like I radiated lol. It was dead calm..and maybe with the inversion lower..i actually was able to radiate?? Does that even make sense?

Did you have an "undercast" this morning above the fog layer? Those are mornings where I'm sometimes cooler than CON. I keep cooling some as the top of the fog layer continues to rise/grow via radiative cooling while CON is socked in to the 1/4SM FG VV001.
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but why would we be cooler than everyone else?

Were your winds calm? I see that every once in a while around here. The lowest elevations fill with fog, but it's actually coldest just above the fog. Actually last week we had it at 35F and fog at 700-800ft, and 32F, clear with frost at 900-1200ft, then above 1200ft the temp jumped to the upper 30s.

Probably something similar near you where I bet you go up another couple hundred feet you'd find the warm mixed layer.

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Were your winds calm? I see that every once in a while around here. The lowest elevations fill with fog, but it's actually coldest just above the fog. Actually last week we had it at 35F and fog at 700-800ft, and 32F, clear with frost at 900-1200ft, then above 1200ft the temp jumped to the upper 30s.

Probably something similar near you where I bet you go up another couple hundred feet you'd find the warm mixed layer.

Yeah there was zero wind..and what was really atypical for me..is as I ran down in elevation around 650 feet it was noticeably warmer..That happens during the day everyday..but not at night/earl;y morning on radiating nights

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Did you have an "undercast" this morning above the fog layer? Those are mornings where I'm sometimes cooler than CON. I keep cooling some as the top of the fog layer continues to rise/grow via radiative cooling while CON is socked in to the 1/4SM FG VV001.

Where i was was completely clear..other than some patchy ground fog..but below about 500 feet i could see a thick fog bank

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