Warm and Dry March Weather Patterns Cause Decreases in Forecasted River Volumes


April 14, 2021

Just when it seemed like the snowpack was on the right track to rebound from the dry December and January, March yielded substantially different weather patterns than the cold and wet conditions experienced during February.

Snowpack percentages on March 1 were at a high point for the year, boosted by well above normal snowfall leading to near to above normal snowpack for almost all Montana river basins. “Unfortunately, March weather started off on the opposite trajectory. Warm, dry air spilled into the state during the fist week of the month and many mountain SNOTEL sites matched record d...

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