ALTA/LITTLE COTTONWOOD CANYON HRRR-DERIVED FORECAST GUIDANCE *************************************************************** * THIS IS AN EXPERIMENTAL, AUTOMATED, AND UNOFFICIAL FORECAST * *************************************************************** CREATED/MAINTAINED BY THE STEENBURGH GROUP DEPARTMENT OF ATMOSPHERIC SCIENCES UNIVERSITY OF UTAH Contact: jim.steenburgh@utah.edu WETBULBZERO, 1H QPF, ACCUM QPF DIRECTLY FROM HRRR COLLINS SNOW RATIO/H2O, MT BALDY T/RH, MT BALDY WIND, 1H SNOW, and ACCUM SNOW based on machine learning including UU RF SLR algorithm Based on 00Z 11-Aug-2025 intialized HRRR FORECAST HOURS 0-48 FHR VALID MOUNTAIN TIME COLLINS T MT BALDY T/RH MT BALDY WIND WETBULBZERO SLR/H2O 1H QPF / 1H SNOW / ACCUM QPF / ACCUM SNOW 0 06 PM Sun Aug 10 2025 56F 50F / 29% WNW 12 G 21 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Sun Aug 10 2025 52F 48F / 29% WNW 13 G 19 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Sun Aug 10 2025 49F 45F / 35% WNW 11 G 16 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Sun Aug 10 2025 46F 45F / 32% W 8 G 12 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Sun Aug 10 2025 46F 45F / 28% ENE 10 G 13 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Sun Aug 10 2025 45F 45F / 32% NNW 15 G 21 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Mon Aug 11 2025 45F 44F / 36% NNW 18 G 26 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Mon Aug 11 2025 45F 43F / 42% N 21 G 30 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Mon Aug 11 2025 45F 43F / 48% NNW 21 G 30 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Mon Aug 11 2025 45F 43F / 44% NNW 19 G 31 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Mon Aug 11 2025 44F 43F / 45% NNW 12 G 27 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Mon Aug 11 2025 45F 43F / 53% N 17 G 32 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Mon Aug 11 2025 44F 42F / 57% N 19 G 31 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Mon Aug 11 2025 43F 42F / 63% N 22 G 36 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Mon Aug 11 2025 45F 43F / 70% N 20 G 31 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Mon Aug 11 2025 47F 44F / 62% N 12 G 27 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Mon Aug 11 2025 49F 45F / 53% NNW 14 G 23 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Mon Aug 11 2025 55F 47F / 45% NW 8 G 20 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Mon Aug 11 2025 59F 49F / 38% NW 11 G 19 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Mon Aug 11 2025 62F 51F / 32% NW 8 G 17 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Mon Aug 11 2025 63F 53F / 36% WNW 10 G 18 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Mon Aug 11 2025 63F 54F / 44% WNW 12 G 22 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Mon Aug 11 2025 63F 53F / 48% WNW 12 G 20 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Mon Aug 11 2025 63F 53F / 48% WNW 14 G 22 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Mon Aug 11 2025 59F 54F / 41% WNW 14 G 22 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Mon Aug 11 2025 57F 53F / 46% WNW 12 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 PM Mon Aug 11 2025 54F 50F / 47% WNW 13 G 18 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 PM Mon Aug 11 2025 50F 49F / 44% NW 12 G 18 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 PM Mon Aug 11 2025 50F 49F / 40% NNW 13 G 19 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 PM Mon Aug 11 2025 50F 48F / 48% NNW 13 G 22 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 AM Tue Aug 12 2025 48F 48F / 53% N 13 G 20 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 AM Tue Aug 12 2025 48F 48F / 57% NNW 12 G 19 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 AM Tue Aug 12 2025 48F 47F / 47% N 11 G 17 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 AM Tue Aug 12 2025 47F 47F / 43% SW 11 G 13 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 AM Tue Aug 12 2025 48F 47F / 43% SW 10 G 15 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 AM Tue Aug 12 2025 48F 47F / 45% W 11 G 14 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 AM Tue Aug 12 2025 48F 47F / 45% W 11 G 14 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 AM Tue Aug 12 2025 48F 48F / 41% W 11 G 14 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 AM Tue Aug 12 2025 48F 49F / 40% WSW 11 G 17 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 AM Tue Aug 12 2025 52F 52F / 45% SW 10 G 18 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 AM Tue Aug 12 2025 56F 52F / 40% WSW 10 G 16 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 AM Tue Aug 12 2025 61F 54F / 42% WNW 6 G 11 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 PM Tue Aug 12 2025 64F 57F / 33% WNW 5 G 11 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 PM Tue Aug 12 2025 65F 58F / 22% W 6 G 17 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 PM Tue Aug 12 2025 67F 58F / 32% W 7 G 17 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 PM Tue Aug 12 2025 67F 59F / 35% W 8 G 18 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 PM Tue Aug 12 2025 66F 59F / 33% W 10 G 19 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 PM Tue Aug 12 2025 67F 59F / 21% W 10 G 19 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 PM Tue Aug 12 2025 65F 58F / 23% W 11 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"