Backcountry Pilot • Fun with fog

Fun with fog

Two of the best inventions ever, skis and airplanes, together.
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Fun with fog

Note: Fun WITH fog, not IN fog. We had a real "good" inversion or whatever it is that makes the fog layer in the valley go from 40' viz (drove down into it later) to severe clear with nothing in between, like it was cut off with a knife. I needed to get to a solar job I did last year to check up on how the flooded batteries were doing. My customers couldn't afford the much more expensive sealed types, and an auto water system (like are available now) couldn't be used either as it would freeze up.

About 30 miles away, and at my elevation a bit over 1 K above the valley. Dead calm and blue skies were the first thing I noticed that morning, it was only while drinking coffee that I happened to look out at the valley, crap!Image The fog layer was lapping at the end of my 400' runway, but by the time I finished getting coffeeed up it had receded to the windsock at the bottom of my property. This left me just enough room to get off and hang a sharp left, and then fly in the clear and parallel to the fog bank, at all times having a clear option in case of power failure. While doing so I climbed and was well over 8K before heading out over the stuff, high enough to make a emergency landing on either clear sides of the valley. Looking back at my place while heading out over the fog.Image
Like I had planned/hoped, the cabin I was landing at was clear of the fog, but just by 1/4 mile at best, totally in clear though. The batteries checked, it was time to go before that fog moved closer. I landed it wrong, parked wrong anyway, so that by the time I got parked on the side slope it would be problematic as to whether I could get turned downhill for takeoff before sloughing off the side slope. I pulled it back a few feet, but not enough, (the skis don't like going backwards too much) so I then carefully worked the plane more downhill (careful not to just wrench the tail around like in the summer, that's real hard on the gear when on skis, I've heard the stories of guys twisting the gear off) :shock: I could only do that a little though as the slope was such that the plane would takeoff without me. So I used a trick I came up with last year:while still back at the tail, and with the plane wanting to slide down hill, I kept one hand on the tail hold and with the other dug a pit for the tailwheel ski. After stuffing the ski down in there I let go and the plane stayed put. All of this is easy enough with a plane the weight of the S-7S, don't try this with a 180.

Even then, I was real careful to get in real gentle like, and thought through what I would do if it did start moving. Once behind the seat (and I didn't put my full weight down on the seat ??) I got strapped in and didn't fool around with the headset, just cranked it up and even while cranking I was sliding, then full throttle and stick forward and full left rudder and I was outa there. This picture shows the deal: I landed on the right, slid out and parked sideways pointing to the left, towards another slope falling away, that's what I wanted to make real sure I got turned before. Hard to describe but it reminded me of setting up a pool shot, no hurry, think it through, figure the angles out, and get it right. I was thinking harder then I ever do in summer ops, all part of the ski fun, real challenging on these little double fall line slopes. A few days before I had landed it the better way, parking pointing to the right, clockwise, I just had my head up my a** the next time, landed it counter clock wise, thinking I had this place whipped. It isn't the landings on skis, it's the turning around that can bite you. After nailing a landing and sliding out (and patting yourself on the back) it is SO easy to finally come to a stop in a area where you will have major hassles getting turned around #-oImage

Coming back, again at altitude after recrossing the fog, my place is just to the left of the center dirt road. Image Right after I took this picture, I decided to cruise past the ski patrol shack at 8600' and see "whassup with my homies" on the patrol ( a little ghetto knuckledragging snowboarder speak, what I mean is I would do a legal flyby, my way of saying hello to the people I participate in winter sports with....) but a mintue later I rechecked my place and damn if the fog wasn't now advancing, since I took that picture. So I did a Air France descent and got 'er down quick and back inside the hangar. An hour later, riding the chairlift with one of the aforementioned homies, who's a neighbor, I mentioned how the flying was great that morning especially as when the fog is that thick and I'm on the skis, I can get down right on top of it and as long as I keep my speed up......it holds me up! He looked at me (he's a 68 year old retired bizman, no dummy) and said "holds you up?" Yeah....it holds you UP! HE frigging bought it, I was laughing my ass off inside. Another indication how the gen pub is so totally clueless of what we do!
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Re: Fun with fog

Image
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Re: Fun with fog

Not skiing on top, but you can get into trouble spraying over fog that is just a few feet thick. The air flow off the wing stirs it up to the point you have to quit early anyway. Sometimes best to just take the load somewhere else or home.
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Re: Fun with fog

I love seeing the fluid dynamics of air made visible by fog.

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Re: Fun with fog

This wasn't too far away from you, courierguy. It was just west of Malad yesterday morning.
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Re: Fun with fog

Malad Summit was my destination, good call.

It's been a weird winter for fog around here....just this AM I took off (blue sky above and to the south, in the valley towards Poky it was somewhat foggy) and started climbing to clear the 8K lower spot in the ridge line that shoots me towards Afton and the cafe there. I would have bet $100.00 it would have been clear in the next valley, based on 30+ years of flying this area, but once I got my eyeballs above the ridge line, I immediately made other plans for breakfast. It was socked in, looked like all the way to and including Afton 65 miles away. So I screwed around a bit on the clear side of the ridge, checking in with the patrollers in their mountainside shack, and then remembered a spot that needed checking out. In the last picture I posted it's the area to the right and in the background. I spotted a nice little sloped meadow up there last year, but figured it was on the Indian Res, that alone made hitting it a deal breaker. Plus a low flyby showed the tops of wood fence posts sticking up, making me think there was a fence line there.

My usual play sites at 6 and 7K are snow free almost, real sparse anyway, so I went up to 8300' and eyeballed this area again: A. it's not part of the Rez. B. The low snow even up there and the tracks left by my snow machine cohorts showed there was no wire between the scattered fence posts! So I didn't get to eat breakfast out today but did get to tag a new site.
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Re: Fun with fog

I don't know if this photo was doctored or not but the spray plane guys a few miles west of me posted this on Facebook. Type in R and M Spraying Service on FB if you want to see more.
Image
Another great picture showing the wind turbine effect on the air downwind. In this case a layer of ground fog is picked up by the disturbed air and thrown higher than the turbine itself. The presence of ground fog indicates this is not a windy day. Imagine what this could do to a pesticide application downwind, obviously a ground rig is going to be just as vulnerable as an aircraft.
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Re: Fun with fog

Great post. :P
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Re: Fun with fog

180Marty wrote:I don't know if this photo was doctored or not but the spray plane guys a few miles west of me posted this on Facebook. Type in R and M Spraying Service on FB if you want to see more.
Image
Another great picture showing the wind turbine effect on the air downwind. In this case a layer of ground fog is picked up by the disturbed air and thrown higher than the turbine itself. The presence of ground fog indicates this is not a windy day. Imagine what this could do to a pesticide application downwind, obviously a ground rig is going to be just as vulnerable as an aircraft.


OMG!!!! Now we know what causes Chem Trails: Wind turbines!!! :wink:
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Re: Fun with fog

GroundLooper wrote:
OMG!!!! Now we know what causes Chem Trails: Wind turbines!!! :wink:


High 5!
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Re: Fun with fog

ImageImage
Taken near Mt Hood Oregon 1-29-15 cold air spilling into valley with frost forming on the trees
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Re: Fun with fog

Taken near Mt Hood Oregon 1-29-15 cold air spilling into valley with frost forming on the trees


That's a pretty neat picture too!!!
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Re: Fun with fog

773m wrote:ImageImage
Taken near Mt Hood Oregon 1-29-15 cold air spilling into valley with frost forming on the trees


Those are awesome!
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Re: Fun with fog

Pretty good thread drift, about drifting fog =D> They say birds may see air like that, that soaring birds can maybe see thermals. Sounds good anyway.
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Re: Fun with fog

Pretty good thread drift, about drifting fog =D>


Well, Zane said

I love seeing the fluid dynamics of air made visible by fog.
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Re: Fun with fog

from PA

Image

Image
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Re: Fun with fog

@ Alex, 773M, Milford Sound, and Others,

These are all great pictures. Would love to hear what camera gear was used for many of these shots. WOW.
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Re: Fun with fog

773m wrote:ImageImage
Taken near Mt Hood Oregon 1-29-15 cold air spilling into valley with frost forming on the trees

Quite the nice pics on first post, welcome!
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Re: Fun with fog

Image

This is my best fog photo. For new years 2014, my wife and I flew from Corvallis, OR to Oakridge State Airport, also in Oregon. The central willamette valley had just cleared up, but the fog refused to clear out toward the south. We skirted the edge of the fog bank and the foothills of the cascades and had a great time!
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Re: Fun with fog

773m wrote:ImageImage
Taken near Mt Hood Oregon 1-29-15 cold air spilling into valley with frost forming on the trees

Very nice. Saw your pics on Facebook. Welcome here.
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