Primary Chart

1. 2025-2026 observed SWE at Brighton (solid blue)
2. Median simulated SWE (dashed purple)
3. 10th to 90th percentiles for simulated trajectories (teal band)
4. 1991-2020 historical median (solid red)
5. The past 20 seasons of historical data (thin solid lines of various colors)

Secondary Chart

1. Current season observed data as a percent of the historical median (dotted blue)
2. Forecast median as a percent of the historical median (dashed purple)

Tertiary Chart

1. Residuals (Forecast Median - Observed)

Median Prediction, Prediction 10th to 90th Percentiles as Band, Historical Median ('91-'20), Past 20 Seasons, and Residuals

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→ Fullscreen Chart, Last Observed Date: 2026-03-08 ←

NOTES:

Source: National Water and Climate Center: SNOTEL SWE Plots: Site 366 (Brighton, UT)

Data Declarations: 2026 does not contain a leap day. In the source data there is a "break" in the data. This model destroys data for leap days, i.e. all years have a length of 365 days, and Feb. 28th always moves to Mar. 1st.