WMOD00133

• Sponsor Name: Western Weather Consultants, LLC
• Project Name: Cloud Seeding Analysis
• Title: An Analysis of Regional Snotel and Ski Area Precipitation Data To Evaluate Precipitation Changes Resulting from Ten Seasons of Wintertime Cloud Seeding Operations over the Vail Ski Area
• Prepared For: Vail/Beaver Creek Ski Areas
• Prepared By: Western Weather Consultants, LLC
• Date: 3/1/2001
• Weather Modification - Doc Type: Report

1 0 Year Snotel Data-Set

Season 94-95 93-94 92-93 91-92 90-91 89-90 88-89 87-88 86-87 85-86 Avg.
Day Pre 1 st Seed 1.0 1.8 8 . 1.3 1.8 1.0 .2 1.7 7.6 1.8
Last Seed Day 10.6 9.4 10.2 13.9 133 12.0 12.8 11.1 11.9 8.9
Arrow 9,680' 9.6 7.6 . 9.4 12.6 11.5 11.0 12.6 9.4 4.3 7.1 9.51"
Day Pre 1 st Seed 5.3 3.5 3.3 !. .. 3.2 4.1 2.5 .7 2.8 14.5 5.3
Last Seed Day 25.1 16.5 24.4 19.6 25.3 19.9 26.6 12.0 21.3 26.1
Bison Lake 10,880 19,8 13.0 21.1 16,4 21.2 17.4 25.9 15.2 6.8 20.8 17,76"
Day Pre 1 st Seed 2.1 3,3 1.3 .7 1.8 1.2 1.3 2.5 9,6 2.8
Last Seed Day 14.4 13.0 10.8 14.8 13.9 15.0 16.1 10.9 14.2 11.2
Grizzly 11,100' 123 9.7 9.5 14.1 12.1 13.8 14.8 8.4 4,6 8.4 10.77"
Day Pre 1 st Seed 3.7 3.2 1.1 2.1 3.2 1.7 .7 2.0 10.5 2.9
Last Seed Day 13.2 11.0 7.7 13.9 12.:3 10.8 14.0 10.6 19.1 9.2
Hoosier Ps 11,400 9.5 7.8 6.6 11.8 9.1 9.1 13.3 8.6 8.6 6.3 9.07"
Day Pre 1 st Seed 3.2 3.7 1.8 2.1 3.7 1.4 .8 1.1 10.4 3.5
Last Seed Day 17.8 14.7 11.3 14.8 11.2 .143 16.0 9.1 17.8 11.2
Ind. Pass 10,600' 14.6 11.0 9.5 12.7 13.5 12.9 15.2 8.0 7.4 7.7 11.25"
Day Pre 1 st Seed 1.6 2.0 .9 1.1 2.5 1.2 .8 1.8 8.0 3.2
Last Seed Dav 9.7 9.3 8.5 10.9 13.5 10,9 12.8 9.5 12.4 11.9
Lynx Pass 8,800' 8.1 7.3 7.6 9.8 . 11.0 9.7 12.0 7.7 4.4 8.7 8.63"
Day Pre 1 st Seed 2.8 3.5 2.0 1.2 . 3,5 1.1 .4 2.7 9.8 0.0
Last Seed Day 16.9 14.1 14.7 16.0 19.9 12.0 18.6 14.5 16.8 12.8
Trappers Lk 9,700 14.1 10.6 12.7 14.8 16.4 10.9 18.2 11.8 7.0 12,8 12.93"
Day Pre 1 st Seed 3.8 3.9 2.4 3.0 4.7 33 .2 23 12.8 4.1
Last Seed Day 23.2 16.6 19,2 17.0 19.6 14.0 18.8 123 18.5 15.6
McClure Ps 9,500' 19.4 12.7 16.8 14.0 14.9 10.7 18.6 10.0 5.7 11.5 13.43"
Day Pre 1 st Seed 2.4 3.7 1.5 2.4 4.1 2.1 .6 1.7 11.5 3.5
Last Seed Day 18.2 16.2 16.7 22.5 223 17.3 18.8 13.2 18.1 13.2
Vail Mtn 10,300' 15.8 12.5 15.2 20.1 18.2 15.2 18.2 11.5 6.6 9.7 1430"
Day Pre 1st Seed 11/7/94 11/3/93 10/31/92 10/31/91 11/3/90 11/3/89 11/1/88 11/5/87 2/13/87 11/3/85
Last Seed Day 3/6/95 2/28/94 2/12/93 3/24/92 3/29/91 3/23/90 3/30/89 2/1/88 4/13/87 2/3/86
Days (season) 118 116 104 145 146 140 149 88 59 92 115.7
Days (Seeding) 38 45 38 44 44 42 39 31 18 17 35.6