Snowpack Level Time Series - 2012 season

To view snowpack depths and their time-dependence, mouse-click on multiple images corresponding to the same venue - generally a county highpoint or large prominence peak. New windows will open, and, upon re-sizing, enables direct comparison of snow levels for different dates.

We contrast the 2012 season with a 'typical' season, 2010, for which data is available throughout the summer. Thereby one estimates how many weeks 'ahead of schedule' or 'behind schedule' the 2012 snow melt progress is relative to 2010. Then, the (available) data for later in the 2010 season than the current date may be used to estimate future snow conditions assuming equal melting rates for the two seasons.

Thus if Peak A's snow depth on June 15, 2012 is roughly equivalent to the snow depth on June 1, 2010 we surmise that the current season is 'running late' by two weeks relative to 2010. Thus to estimate the snow depth at Peak A on July 30, 2012 we employ the depth on July 16, 2010 as a surrogate.

Specific observations follow.

As of June 19, 2012, Snowyside Peak (Elmore County, Idaho) may be roughly equal in snow coverage compared with the same time of season in 2010; and similarly for Mount Cramer of Boise County, Idaho.

As of June 19, 2012, Big Baldy (Valley County, Idaho) may be 10 days behind in snow melt compared with the same time of season in 2010.

As of June 19, 2012, Mount Stone (Mason County, Washington) may be 2 weeks behind in snow melt compared with the same time of season in 2010.

As of June 19, 2012, Mount Stuart (Washington) may be less than one week behind in snow melt compared with the same time of season in 2010.

As of June 19, 2012, Buckner Mountain (Skagit County, Washington) may be 2 weeks behind in snow melt compared with the same time of season in 2010.

The procedure for obtaining this type of information is provided below.

Elmore (Snowside Peak) and Boise County (Mount Cramer), Idaho -
July 10, 2012     July 3, 2012     June 26, 2012     June 19, 2012     compared against
                          July 3, 2010     June 26, 2010     June 19, 2010     June 5, 2010     June 12, 2010
Valley County, Idaho (Big Baldy) -
July 10, 2012     July 3, 2012     June 26, 2012     June 19, 2012     June 5, 2012     compared against
                          July 3, 2010     June 26, 2010     June 19, 2010     June 5, 2010     June 12, 2010
Grays Harbor ("Wynoochee Point") and Mason County (Mount Stone), Washington -
July 10, 2012     July 3, 2012     June 19, 2012     June 12, 2012     June 5, 2012     compared against
July 10, 2010     July 3, 2010     June 19, 2010     June 12, 2010     June 5, 2010     June 26, 2010     July 17, 2010    
Mount Stuart, Washington -
July 10, 2012     July 3, 2012     June 19, 2012     June 12, 2012     June 5, 2012     compared against
                          July 3, 2010     June 19, 2010     June 12, 2010     June 5, 2010     July 17, 2010
Skagit County, Washington (Buckner Mountain) -
July 10, 2012     July 3, 2012     June 19, 2012     June 5, 2012     compared against
                          July 3, 2010     June 19, 2010     June 5, 2010     May 22, 2010

Procedure

STEP 1. Go to the NOAA Snow Analyses Archives
available from the National Snow Analyses 3D Interface main page.

STEP 2. Select a specific date, such as July 3, 2012, and open the resulting file using installed Google Earth software.

STEP 3. In the left pane of Google Earth uncheck the box for "Snow Water Equivalent";
and check the box for "Snow Depth".

STEP 4. Go to the Google Earth Images Page at cohp.org and mouse-click on the desired USA map to overlay county highpoint locations onto the (already opened) snow archive imagery.

STEP 5. Pan and zoom the resulting globe to examine snowpack levels for the peak of interest.


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