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 12Z 03-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 AM Sun Aug 03 2025 46F 44F / 39% WNW 15 G 20 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Sun Aug 03 2025 46F 45F / 28% WNW 14 G 19 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Sun Aug 03 2025 47F 46F / 27% W 14 G 18 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Sun Aug 03 2025 49F 47F / 18% W 12 G 16 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Sun Aug 03 2025 53F 49F / 19% W 10 G 12 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Sun Aug 03 2025 58F 50F / 18% W 10 G 16 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Sun Aug 03 2025 62F 52F / 21% WSW 8 G 14 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Sun Aug 03 2025 62F 53F / 19% W 9 G 15 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Sun Aug 03 2025 65F 54F / 16% W 7 G 15 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Sun Aug 03 2025 66F 56F / 19% W 7 G 14 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Sun Aug 03 2025 65F 56F / 17% WSW 8 G 15 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Sun Aug 03 2025 65F 56F / 7% SW 10 G 18 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Sun Aug 03 2025 63F 56F / 11% SW 8 G 17 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Sun Aug 03 2025 60F 55F / 21% SW 10 G 16 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Sun Aug 03 2025 56F 53F / 22% W 10 G 15 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Sun Aug 03 2025 54F 52F / 28% SW 13 G 18 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Sun Aug 03 2025 54F 52F / 19% SSW 17 G 27 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Sun Aug 03 2025 54F 53F / 10% SSW 17 G 27 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Mon Aug 04 2025 53F 53F / 10% SSW 18 G 31 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Mon Aug 04 2025 53F 52F / 4% SSW 20 G 34 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Mon Aug 04 2025 52F 50F / 14% S 20 G 35 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Mon Aug 04 2025 51F 50F / 13% SSW 20 G 35 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Mon Aug 04 2025 50F 49F / 14% SW 20 G 33 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Mon Aug 04 2025 49F 49F / 12% SSW 19 G 32 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Mon Aug 04 2025 48F 49F / 14% SW 19 G 31 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Mon Aug 04 2025 48F 48F / 16% SW 19 G 32 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Mon Aug 04 2025 50F 48F / 20% SW 20 G 32 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Mon Aug 04 2025 51F 49F / 15% SSW 19 G 31 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 AM Mon Aug 04 2025 54F 50F / 14% SSW 17 G 31 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 AM Mon Aug 04 2025 59F 50F / 10% SSW 17 G 33 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 PM Mon Aug 04 2025 62F 52F / 10% SSW 15 G 32 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 PM Mon Aug 04 2025 64F 53F / 8% SSW 14 G 29 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 PM Mon Aug 04 2025 66F 54F / 10% SSW 14 G 30 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 PM Mon Aug 04 2025 66F 55F / 7% SW 13 G 30 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 PM Mon Aug 04 2025 66F 56F / 4% SSW 14 G 30 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 PM Mon Aug 04 2025 67F 57F / 6% SSW 15 G 33 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 PM Mon Aug 04 2025 63F 56F / 3% SW 15 G 29 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 PM Mon Aug 04 2025 62F 58F / 0% SW 18 G 32 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 PM Mon Aug 04 2025 58F 56F / 5% SW 18 G 32 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 PM Mon Aug 04 2025 54F 53F / 12% WSW 18 G 28 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 PM Mon Aug 04 2025 54F 53F / 14% WSW 20 G 32 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 PM Mon Aug 04 2025 53F 52F / 17% SW 18 G 30 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 AM Tue Aug 05 2025 52F 51F / 18% WSW 18 G 29 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 AM Tue Aug 05 2025 50F 50F / 27% WSW 16 G 26 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 AM Tue Aug 05 2025 51F 49F / 30% WNW 16 G 26 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 AM Tue Aug 05 2025 50F 49F / 30% W 15 G 27 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 AM Tue Aug 05 2025 50F 49F / 32% W 15 G 25 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 AM Tue Aug 05 2025 46F 47F / 36% W 17 G 23 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 AM Tue Aug 05 2025 45F 46F / 35% WSW 16 G 22 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"