Question for the experts about flow

[SmellsLikeSyrupNH]

So as some of you may have read I had a pretty decent weekend for a small timer. In Merrimack when I woke up yesterday morning I had ice all over all of my puddles in the driveway and yard and my truck said it was 28 degrees. with the temps getting as warm as they did yesterday I was pretty disappointed to barely see ANY sap flow at all. I went form 200 gallons Thursday, Friday and Saturday, to maybe 20 gallons yesterday.

I would of expected a TON to flow with that weather swing, but no such luck.

This morning it was 23 in my driveway and more ice again....looks like today "SHOULD" be a great day as there isn't a cloud in the sky and mid 40's predicted....Im hoping that's the case.

Anyone see anything similar? Why would they basically shut off after such a big warm up?

[maplestudent]

I don't know for sure (and I'm also no expert.....far from it) however it is possible that it didn't get cold enough for a long enough amount of time to freeze the trees.

[bcarpenter]

Mother Nature is fickle! I am in Bedford and put in about 20 on vacuum late Sunday of my 50 total taps. All on reds.

Yesterday was slow. For me I needed more of a freeze up to see great runs


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[GeneralStark]

Winds from the South, the sap runs in a drought...

[markcasper]

It has more to do with air pressure changing than anything. I had a huge run last year during a strong south wind event....tanks running over kind of run. Before an approaching low pressure area you get south and east winds, when the air pressure drops fast preceding and during the low pressure area overhead, it usually runs like mad. If on the other hand you are getting a south wind because you are in an area on the backside of a high pressure area, then you get dismal runs and I think that is where the saying a south wind will run a drouth. The other saying is a wind from the east and the sap will run the least is often heard, but many times get good runs from an east wind as well.

[DrTimPerkins]

I don't know for sure (and I'm also no expert.....far from it) however it is possible that it didn't get cold enough for a long enough amount of time to freeze the trees.

I agree. Trees are large and well buffered to temperature change. It likely just didn't get cold enough for long enough.