It's almost here. When are you hoping to get out and what part of the state?
Couldn't find the original thread, so I started this one.
I can guarantee you there will be people out this upcoming weekend. There are known spots in Vilas County that Ice up quick!! Will probably put a thin layer on tonight. And just continue making it. By Saturday. 3 inches. Shallow water. There are always people out very early on these certain waters.
Like others have said lately we get that one warm week in December which sucks but every year is different but it's kind of been a trend. For places I go I try to calculate the ice with the freezing degree days but alot of times there's more ice than I calculated by the formula when I drill the first hole. Hope the snow holds off until we have good ice. Got my gear ready last weekend can't wait for that first ice trip.
The key to making ice is both temps and daylight. Wind as well, at least early. Last year we had a huge cold snap before Christmas but the wind was chopping up water. Once ice is on the wind isn't nearly as big a factor as it's blocked by existing ice. You are correct. A high of say 36 is only above freezing for a few hours. A low of 20 when its dark most of the time means its closer to 20 far more often. Sun angle also plays a role. Sun is getting very low. This is also why when you get a warm up in say January or February when it may hit 40, it barely does anything to ice. In fact it usually keeps making ice as it's below freezing far longer and warm times don't effect ice much due to sun angle (love fishing these days). But when it gets into 40s in mid march the ice goes away fast. More daylight and higher sun angle. Looking at forecast, We may be ice fishing early December this year in Western Wisconsin. I hope so as I love when it starts right after deer season.
Love the formula for making ice. My only two thoughts:
1. The average high and low would need to be calculated over the entire day. For example, if the high was 32 and the low 20, I don't know that the average temp would necessarily be 26 since there isn't much daylight anymore and I'd imagine the majority of the 24 hour period was closer to 20 than 32, so the average might be like 24.5 or something....
2. Once ice forms, does it take more cold to keep increasing the ice? For example, if 3 inches of ice are on a lake, does it take more "time" for the 4th inch to arrive vs. going from 1 inch to 2 inches?
I don't know. I just know that with early ice, the first 4 inches seems to go on very quickly, then it seems to slow from my memory.