Snow Data Assimilation System (SNODAS)
SNODAS is available for Colorado and Washington.
The SNODAS model is run by the National Weather Service National Operational Hydrologic Remote Sensing Center (NOHRSC) in Chanhassen, MN. SNODAS data have been graciously provided by the National Snow and Ice Data Center (NSIDC) in Boulder, CO. For further information, contact Dick Stodt.
Colorado Data Plots
Late Night Snow Water Equivalent (SWE) Plots~1x1 km Grid
SWE Fields: Latest Day 2wk animation Historical (back one year)
Basin Average SWE: Latest Day 2wk animation Historical (back one year)
SWE Change (past week) Plots~1x1 km Grid delta-
SWE Fields: Latest Day
Basin Average delta-SWE: Latest Day
Late Night Snow Depth Plots~1x1 km Grid Depth Fields: Latest Day
Basin Average Depth: Latest Day
24hr Snow Snow Melt Plots Melt in ~1x1 km Grid Fields:
Latest Day 2wk animation Historical (back one year)
Basin Averaged Snow Melt: Latest Day
24hr Avg. Snow Pack Temp.(C°) PlotsSnow Pack Temp. (C°) in ~1x1 km Grid Fields:
Latest Day 2wk animation Historical (back one year)
Basin Average (excluding snow free areas): Latest Day
Water Year SWE Animations (1st & 16th of months)~1x1 km Grid Fields:
2004 2005 2006 2007
Basin Averaged Fields: 2004 2005 2006 2007
Caution: These are experimental data.
SNODAS daily time series archive appended daily.
daily basin avg. .csv files
Columns in these .csv (Comma Separated Value) files, after remarks on how basin averages are computed: .csv files columns list
Map area over Colorado Rocky Mountains: plot of subbasins covered
Snow Data Assimilation System (SNODAS)
Washington Data Plots
Latest Day 2wk animation Historical (back one year)
Basin Average SWE:
Latest Day 2wk animation Historical (back one year)
SWE Change (past week) Plots~1x1 km Grid delta-SWE Fields: Latest Day
Basin Average delta-SWE: Latest Day
Late Night Snow Depth Plots~1x1 km Grid Depth Fields: Latest Day
Basin Average Depth: Latest Day
24hr Snow Snow Melt PlotsMelt in ~1x1 km Grid Fields:
Latest Day 2wk animation Historical (back one year)
Basin Averaged Snow Melt: Latest Day
24hr Avg. Snow Pack Temp.(C°) Plots
Snow Pack Temp. (C°) in ~1x1 km Grid Fields:
Latest Day 2wk animation Historical (back one year)
Basin Average (excluding snow free areas): Latest Day
Water Year SWE Animations (1st & 16th of months)~1x1 km Grid Fields: 2004 2005 2006 2007
Basin Averaged Fields: 2004 2005 2006 2007
Caution: These are experimental data.
SNODAS daily time series archive appended daily.
daily basin avg. .csv files
Columns in these .csv (Comma Separated Value) files, after remarks on how basin averages are computed:
.csv files columns list
Map area over Columbia Basin etc.:
plot of subbasins covered