Paradise & Crater Lake Snowfall/Snowdepth Plots
(page created February 2005, data last updated March 2011)
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See the main Cascade Snowfall and Snowdepth page, plus
Snow Season Reports: 2005-2006, 2004-2005,
2003-2004, 2002-2003
See also Previous Seasons, Normals & Info,
Cascades El Niño / La Niña, and NEW
Historical NWAC Snowdepth Data & Plots
This page displays combined snowfall and snowdepth data for Mount Rainier Paradise and Crater Lake
National Park headquarters, starting with the 1916-17 season. These sites are of great importance because
they are the only high-elevation, high-snowfall locations in the Cascade Range which have reasonably complete
weather records covering the entire year over a period of several decades. I have written a custom plotting
program (using PHP and the GD graphics library) to display the data for any season or site, with user-selectable
options for which data and plot elements are shown, including average, maximum, and minimum values.
The ENSO status can be displayed for seasons since 1949-50.
See the Notes and Version History below for additional info.
The plotting program is new as of February 2005, updated April 2005.
Please notify me of any problems or bugs, and I will attempt to fix them as soon as
possible.
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| Useful Information and Notes |
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There are a few completely missing (or nearly so) seasons of data within each site's period of record:
1918-19 and 1949-50 for Mount Rainier Paradise, and 1925-26, 1928-29, and 1942-46 for Crater Lake.
Both sites have various other missing values, especially several decades ago, but overall they each have about
95% of possible data values within their period of record.
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| • | Examples of really huge snow seasons: |
1916-17, 1926-27, 1932-33, 1949-50, 1955-56, 1970-71, 1971-72, 1973-74, 1982-83, 1996-97, 1998-99, 2007-2008 |
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| • | Examples of very poor snow seasons: |
1929-30, 1933-34, 1940-41, 1941-42, 1962-63, 1976-77, 1980-81, 1991-92, 2000-2001, 2004-2005 |
| • | Some weird or unusual snow seasons: |
1930-31, 1944-45, 1975-76, 1989-90, 2002-2003 |
| Plotting Program Version History |
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1.0 |
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10 Feb 2005 |
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First online release, based on the Historical NWAC Snowdepth Plotting Program. |
| 1.1 | 11 Feb 2005 |
Minor revisions and additions to data, especially for Crater Lake before 1931. |
| 1.2 | 10 Apr 2005 |
Record high or low values are colored green or red on the plot. |
| 1.3 | 11 Apr 2005 |
Added capability to show average, maximum, and minimum snowfalls/snowdepths in gray,
green, and red. |
| 1.4 | 11 Apr 2005 |
Added data and display of maximum snowdepth during each season. |
| Copyright Notice |
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Although the data used on this page is within the public domain, the plotting program (including the code
and interface) and its output (the generated graphs in GIF format) are ©2005 by Amar Andalkar. Permission
is hereby granted for limited non-commercial use of these graphs either online or in non-profit newsletters, but
you must obtain permission from me via email (see contact info) prior to any
commercial use, including but not limited to publication online or in newspapers, magazines, or books.
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Data on this page provided by National Climatic Data Center
supplemented by data from Mount Rainier and
Crater Lake National Parks.
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