Winter Weather

Investigating Precipitation Formation in Winter Storms

Since the completion of the Wyoming Weather Modification Pilot Project (WWMPP) in 2014, the Wyoming Water Development Commission (WWDC) has broadened its focus for cloud seeding research and operations to encompass additional mountain ranges in the State.  The WWMPP had originally focused on research in the Medicine Bow, Sierra Madre, and Wind River Ranges. Beginning in November 2014, the WWDC implemented an operational cloud seeding program in the Wind River Range under a contract with Weather Modification Inc. (WMI).  NCAR was funded by the U.S. Bureau of Reclamation to do a modeling study in parallel with and to complement the Wind River Range program.  In May 2014, the WWDC also funded a Phase II Feasibility Study in the Salt River/Wyoming Range of western Wyoming.  This area had previously been examined in 2006 to assess the potential for cloud seeding to augment flow into the Green River Basin, and the Phase II study was commissioned in order to update the previous study using new data and modeling technologies developed during the WWMPP.  Scientific results for work conducted in the Wind River and Salt River Ranges may be found in the 2015 Lab Annual Report.

In May 2015, the WWDC funded three new studies, two of which were awarded to NCAR.  The two NCAR studies were a Final Design and Permitting Study to design an operational cloud seeding program in the Medicine Bow and Sierra Madre Ranges, and a Feasibility Study to assess the potential for cloud seeding in the Bighorn Range in north-central Wyoming.  Key accomplishments in FY2016 for these Wyoming ranges, as well as plans for FY2017, are detailed below.

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Winter Weather