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Accuracy of J2Ski's Powder Alarms

Accuracy of J2Ski's Powder Alarms

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Started by Furthy34 in Ski Chatter - 27 Replies

Poll - How much faith do you have in J2Ski's snow forecasts?

A lot 15%
2
Quite a lot 31%
4
Cannot say one way or the other 0%
0
Not very much 38%
5
None at all 15%
2

Total Votes : 13

J2Ski

Ranchero_1979
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017

I would say the powder alarms and 24hr forecast undersestimate snow fall in a Chamonix (only one ever look at). Presumably because they take mid mountain estimates. With upto 1500m elevation the top lifts seem to get between 50 and 100% more snow.
Long term j2ski forecasts are often more optimistic that what resort itself is predicting but that is nature of forecast models. No point getting too excited until snow is in the 2-3 day window.

Furthy34
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017

J2Ski are currently reporting a forecast of 11cm of snow down to resort level in Obergurgl on Wednesday. Obergurgl get their forecasts from OberlandWetter.at and hence their website forecasts no snow as does Bergfex.com so we will see who is right.

Brucie
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017


The next notable snow forecast for Soldeu el Tarter is 11cm, expected on 6 February, with around 29cm forecast over the next 7 days - and up to 197cm possible the following week.

Yep. We'll see!
"Better to remain reticent and have people think one is an idiot, than to open ones mouth and remove all doubt"

Edited 1 time. Last update at 06-Feb-2017

Admin
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017

https://www.grandvalira.com/en/weather-forecast wrote:LAST SNOWFALL
06/02/2017
FALLEN CMS
30 CM

That's 30cm today, out of the 29cm we forecast for this week... long-range will change Brucie; you're a hard man to please! 8)
The Admin Man

Brucie
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017

It's just the 10-14 day prospect that is consistently wildly overestimated.
Perhaps the program needs adjusting?
"Better to remain reticent and have people think one is an idiot, than to open ones mouth and remove all doubt"

Admin
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017

Admin wrote:Our forecast has revised to 8cm expected today, v.light snow tomorrow and a further fall on Wednesday.

The above quote was from yesterday; Obergurgl this morning reported 10cm new snow on the mountain (i.e. yesterday), 5cm in resort - we'd forecast 8cm.

No snow so far today, although it had clouded over by dusk and we're forecasting snow overnight and (last update) 10cm for tomorrow.
The Admin Man

Brucie
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017

When will it next snow in Soldeu el Tarter?
The next notable snow forecast for Soldeu el Tarter is 3cm, expected on 7 February, with around 19cm forecast over the next 7 days - and up to 179cm possible the following week.

It's the 179cm that's at issue. Why is the 10-14day forecast always so ridiculously high?
"Better to remain reticent and have people think one is an idiot, than to open ones mouth and remove all doubt"

Dave Mac
reply to 'Accuracy of J2Ski's Powder Alarms'
posted Feb-2017

Brucie, I tried to follow the issue using your connection. I can see the daily depth forecasts. The only reference I can see to 1.79m is 1.71m, whhich refers to the current depth of snow at various heights, this information generally being supplied by the local tourist board.

On your connection, I cannot see a 10-14 day prospect? Can you provide a pointer, please?

Topic last updated on 13-February-2017 at 19:52