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What’s New |
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Last update: Friday, July 09, 2021 (Graphs now updated daily) |
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October 10 2004 – New: For the coming snow season, hourly lapse rate data is used to process the corresponding hourly SNOTEL data. Yes, I know, I should have done it last year. :-)
Also for this season, there is a first attempt at accumulating all the weekly snowpack predictions, adjusting these for spring snow density. A chart based on these estimates for the entire snow season to date is posted as Chart 4, below the others on the current snowpack charts page.
September 27 2004 – New: Some rearrangement of the site. The Blewett pass section is now part of the main site, and since the Blewett SNOTEL station is now reporting hourly, the Blewett charts will use the same format as those for Sasse Ridge.
May 6 2004 – New: For summer, the Sasse charts now display hourly fire weather data for the last 3 and 10 days. They will be posted automatically most days, around 5 am.
Jan 4 2005 – New: Model now uses the most recent environmental lapse rate from Stampede Pass to estimate the temperatures at different elevations. Instead of the modified ’ten to one’ rule for new snow depth, an adjustable power function is used as discussed here.
Also, the model has been adapted for the Swauk Blewett Pass area, and charts for this area will be posted automatically around 4:30 am here.
Nov. 2005 – New: The snowpack charts for Sasse and Blewett are being posted again this winter. For now, the Sasse charts will be updated morning and evening, and the Blewett charts mornings only. An additional chart has been added showing predictions of temp vs. elevation for Stampede Pass from the Forecast Systems Lab at the time the charts are posted.
Nov. 2006 – New: There are several new features I’ve added over the last winter. The lapse rate is now graphed and is quite helpful. Last winter the Sasse cumulative snow chart seemed to reflect spring conditions fairly well, if you take the caveats on the chart into account. Every 6 hour solar radiation values are now displayed. When the graphs show a sudden and unexpected increase in snow, look for high solar radiation and temps near or above freezing. This suggests that the precip gauge was snowcapped, and with warming, the snow cap fell into the tube. You can further confirm this by checking the raw SWE data from the web. Look for an earlier significant increase in SWE, and no increase at the time you suspect the snow cap might have fallen in.
October 2007 — New: New webserver, new look, now a part of ‘Larry’s Cascade Resource’. Yes, really.
December 2007 — New: I think I’ve finally solved the unattended chart upload problems, so if all goes well the snowpack charts will be uploaded twice daily 7 days a week now.
Jan 2008 — New: I’ve changed the settings that govern the generation of the html for the current charts so that they should work on more browsers. That alternate links are still present however if not. |