![]() ![]() Once set, click OK to generate noise on the layer. When prompted, input the following presets: Now we are going to use the Noise filer to add a pattern to the layer that can be manipulated to look like snow. Step 3: Use the Noise filter to add noise to the black layer Your layer should then be filled entirely with black: When prompted, leave the defaults presets as they are and press OK. Now we are going to fill this layer entirely with black, so make sure you currently have black set as your foreground color. You should notice a new layer added to the Layers menu. Leave the defaults as they are when prompted and press OK. Our snow overlay will be created on its own layer, so let’s add a new layer to the document by navigating to: Step 2: Add a new layer to the image and fill it with black It should be noted that this tends to work best with images that have a darker composition. Too early for details, but we will keep an eye on this.Locate your image on your hard drive and select it to open it.įor this demonstration we will be adding a snow overlay to this example image: This photo has a darker composition, meaning the snow overlay will render nicely on it. You can see the GEFS plumes start generally heading upward again next week: GFS and Euro both show an active western US once again with the potential for moist storms to push into the Sierra and Great Basin. ![]() Right now, the most likely bet for storms to return is next week on about Tuesday the 21st. Some models have hinted at weak energy sneaking in. I don't think we will see any snow this weekend but I can't fully rule out snow on Sunday. We should be mostly dry and a bit warmer heading into the weekend. Thursday is a bit less safe of a bet for deep powder, but you'll certainly get terrain openings and perhaps some bluebird skies. There is likely to be canyon closures for at least parts of the day. *shrug*)Īnyway, Wednesday should be a good storm day for skiing as long as you can get to the resorts. But it also could mean that we tend to overforecast warm storms and underestimate just how dense the snow will be. Now that stat could be skewed a bit because the amounts might be lower because the storms came in with denser snow. I found that storms with a snow ratio below 10:1 perform lower than expectations at a much higher rate than above 10:1. In these spreadsheets I keep track of the average snow ratio for Alta-Collins. (Of note, I keep spreadsheets of every storm and my personal forecasts and my variance to actual snow. Obviously, I'd love to be wrong and have the NW flow dump more than expected. Rather, I think the original forecast of 10-20" for most mountains with maybe up to 2 feet in the Cottonwoods seems like the more likely outcome. It would require 3" of liquid at 12:1 ratios which I don't think is going to happen. I noticed this morning that the official Winter Storm Warning mentions up to 3 feet of snow for the Cottonwood Canyons. You can see that the snow is very much confined to just the areas of the highest elevation - with very little for valleys or mountain valleys. The higher snow levels are also reflected when we look at the NBM snowfall forecast: That would be some very dense snow with 7.5-to-1 ratios. The HRRR shows the following for upper LCC: Cold air in NW flow continues tomorrow during the day with additional snow showers, particularly in NW flow favored areas.Īs for amounts, generally similar to what we saw in yesterday morning's forecast:Īreas in red could see 1.5" to 2.5" of liquid. This should put down a quick additional few inches before opening tomorrow and the snow will be of a lower density (unless we get graupel). Then, early tomorrow morning the cold front is going to pass through with a period of intense snow generally moving through the Wasatch Front from 3am-9am. We should see a period of dense high elevation snow through early overnight hours. Temperatures are mild and will stay mild through the day with snow levels reaching 8000ft and perhaps a touch higher. Today we will see a blustery day with snow developing by late afternoon in northern Utah mountains. (if you haven't spent much time playing around with these overlays, I recommend it as they are incredibly useful) Winds are picking up and it is now mostly cloudy over the state as you can see on our cloud cover forecast overlay on OpenSnow: ![]()
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