SNOW ANALYSIS LINK
The link to get directly into the Philbrook area is super-long, so use this shorter version. Also, check the date on the page. It does not update during the summer.
if you want to go directly there, copy and paste this link into your browser:
http://www.nohrsc.noaa.gov/interactive/html/map.html?mode=pan&zoom=¢er_x=+-121.6941¢er_y=+++39.8852&ql=station&var=snow_depth_shallow&dy=2006&dm=5&dd=26&dh=0&snap=1&o5=1&o6=1&o11=1&o12=1&lbl=l&o13=1&o7=1&min_x=-121.70874999999&min_y=39.846667353307&max_x=-121.23374999999&max_y=40.20500068664&coord_x=-121.47124999999&coord_y=40.0258340199735&zbox_n=&zbox_s=&zbox_e=&zbox_w=&metric=0&bgvar=dem&width=600&height=450&nw=600&nh=450&type=0&js=1&uc=0
Otherwise, here is the national map
As a reference, Philbrook Campground is at Lon: 121.467, Lat: 40.028