Temperature question

Q

QuickNDirty

Guest
So at 5am, it was 24 degrees up here in this tree, and dark as hell. I was warm and comfy until about 635am when the darkness started to break. Temp is now around 30. Wind is roughly the same as it was an hour ago. Why am I cold now? Is it a biological thing where internal processes change when the lights come on, or what?
 
Well, it's well known in the army, it's called "stand to" and it's the coldest part of the day. Right at sunrise. You get up early and stay on the lookout for next hour during sunrise so as not to get attacked by surprise or in the sack.

The temperature will still be dropping down to the point it heats back up, but it takes a bit for the switch to happen, so yeah, that's usually the coldest part of the day. It's not just you!
 
Sun is not up yet. I'm going to a match in Roswell NM. Lucky the wind isn't blowing and of course it is cold as shit but I just think of the Chosin Reservoir when I want to cry about it. It warms me up a little. lol. It could be worse but only idiots like us go out and shoot on the worse day of the year. Lets include waterfowl hunters. I have a lot of respect for those morons. Eat a bird that tastes like fish. Yuck! Unfortunately shooting requires sitting still in the cold a lot of times.
 
Yep, always coldest right at dawn.
Have noticed it from fly over country to the top of some mountains.
Might have to do with the beginning of thermals reversing.
I've watched the fog/haze wonder down through the canyons just after first light.


R
 
If you go to the NOAA.gov website and look at the local forecast and then drill down to the hourly graphs on temperature, you'll see each day the coldest point (assuming static winds / clouds) tends to be right around the time the sun rises, till a bit after.

This of course varies greatly based on cloud cover, or here in Texas the winds always changing and bringing different weather in.
I tend to religiously look at the hourly charts to see when it's best to run the hounds.
 
You got up and dressed in a warm house. Drove to the site in a warm vehicle. Got out, gathered your gear and climbed a tree stand...still warm. Sat more or less static for an hour.
 
You got up and dressed in a warm house. Drove to the site in a warm vehicle. Got out, gathered your gear and climbed a tree stand...still warm. Sat more or less static for an hour.

Pretty accurate except the 'house' has no legitimate heating/cooling facilities and the room I sleep in lacks some of the higher end features like glass in the window next to my bed. Jeep kinda gets warm by the time I have to stop and start my 3/10ths of a mile hike up a steep hill. I keep my stuff unzipped on that and move slowly so I don't start sweating or spook stuff.

The thing that prompted me to make this post, though, was my feet. I went off and forgot my thicker socks and all I had were these damn 35 below aluminized whatevers I got from somebody for Christmas. They're thin, and my boots are uninsulated canvas type material, wolverine stock number W08324. I need another pair as these are wearing out after about 4 years, but aside from being uninsulated, they're awesome for everything else. Waterproof, lightweight, comfy, that sort of thing. Thick socks work well enough for colder weather, unless you leave them in the dryer along with your usual second layer clothing.

Those boots plus those 35 below things which did nothing to keep my toes warm led to some pretty numb feet, but the thing that got my attention was how abruptly my feet went from 'hey, we're actually kinda toasty right now' to 'damn, it's been a while since my toes have been this cold' starting right there at the point where the sun started to illuminate stuff. Next time I'm going to take a thermometer with me. Weather stations said the temperature stayed about the same from the time I got set up to the time my feet started complaining which was a little over an hour of sitting still, and the wind was not much different, either. That's why I was thinking biological, but who knows. Next time I probably won't forget my shit.

I did manage to fill my last tag with my muzzle loader this morning, though. 20 days of ownership and it has already put meat in the freezer =)