Is there a way of finding out what altitude your Inverness chart is accounting for in its snow rows? Inverness is pretty much sea level and I feel the snow rows represent something much higher?

https://www.theweatheroutlook.com/twoforecasts/ensemble-forecast.aspx?location=Inverness

 

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Brian?

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That's plotted at 57 lat, -4 lon using 1x1 degree GEFS data. Not sure about the altitude but remember that quite a big area is covered.

The snow row is calculated by looking at all of the individual runs at all of the timesteps. For example take Day 2:

There are 4 time steps, 00, 06, 12, 18

If GEFS P5 is the only run to show snow but shows it more than one time step (e.g. 06 and 18) the snow row value will be one.

If GEFS P5 and P10 show snow for one time step each on the same day (e.g. P5 06, P10 18) the snow row value will be two.

 

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From the GEFS raw grib data, the surface elevation at 57 -4 in the low resolution data is 423m, and in the high resolution data 569m. Technically that point lies over the high ground southeast of Kingussie!

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Thanks. That makes a bit more sense for the snow row then

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Thanks for the detailed explanation Brian, always wondered about the snow rows 🙂 Cheers glenogle for asking.

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On my phone just now, so not easy to search, but I posted on this a couple of years ago. The “Inverness” chart is pretty much on the geographical centre of Scotland, in the hill country south of Kingussie and a little east of the A9 road. So (a) its nowhere near the town really, but (b) is extremely useful for indicating what potential mountain conditions are likely to be. And it’s usefully well away from the coast.

Yup. That's what I had hoped. I have a site in the hills and was hoping Inverness was indeed higher than Inverness so to speak so a good indicator for me without me having to use another site.

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