National Weather Service United States Department of Commerce


Two separate storm systems affected the Grand Junction forecast area during this timeframe. The first occurred Sunday, January 22nd and ended Monday the 23rd. The second storm started Monday evening and persisted through Wednesday. The first storm was in response to a passing upper level trough that provided enough lift and instability to provide snow across the region. Favorable south to southwest flow also provided enough orographic lift for snow to fall across mountainous areas. A 6 to 12 hour lull occurred late Monday night into Tuesday morning before the next system brought more snow.

The second storm was more potent as it tapped into the Pacific Ocean allowing anomalously high moisture to move into the region. Accompanying the moisture was a strong upper level jet which increased instability across the area while providing plenty of lift. The low pressure center of this system started off the Washington State coast and slowly dropped south and east through Tuesday. As this happened, south to southwest facing slopes were favored for snowfall, mainly the San Juans. Once the low moved over Colorado, flow switched to northwesterly allowing snowfall to favor the central and northern mountains through Wednesday afternoon.

Storm Total Snowfall from January 22 - 25, 2017
nws logo Media use of NWS Web News Stories is encouraged!
Please acknowledge the NWS as the source of any news information accessed from this site.
nws logo