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 05-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 Mon Aug 04 2025 64F 57F / 5% SSW 17 G 33 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Mon Aug 04 2025 60F 56F / 8% SSW 18 G 33 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Mon Aug 04 2025 56F 53F / 9% SSW 19 G 33 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Mon Aug 04 2025 54F 52F / 6% SSW 20 G 33 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Mon Aug 04 2025 53F 52F / 6% SSW 22 G 37 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Mon Aug 04 2025 52F 51F / 7% SW 21 G 37 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Tue Aug 05 2025 50F 49F / 16% W 17 G 28 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Tue Aug 05 2025 49F 48F / 27% WNW 15 G 23 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Tue Aug 05 2025 49F 47F / 34% WNW 13 G 21 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Tue Aug 05 2025 49F 47F / 32% W 14 G 20 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Tue Aug 05 2025 48F 46F / 33% WNW 14 G 22 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Tue Aug 05 2025 48F 47F / 36% W 13 G 17 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Tue Aug 05 2025 47F 46F / 38% W 12 G 17 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Tue Aug 05 2025 47F 46F / 36% WSW 14 G 20 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Tue Aug 05 2025 47F 46F / 37% WSW 13 G 19 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Tue Aug 05 2025 50F 48F / 28% SW 14 G 21 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Tue Aug 05 2025 53F 48F / 26% SW 13 G 20 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Tue Aug 05 2025 57F 50F / 19% SSW 11 G 19 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Tue Aug 05 2025 61F 51F / 17% SW 10 G 18 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Tue Aug 05 2025 63F 53F / 17% SSW 10 G 20 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Tue Aug 05 2025 64F 54F / 15% SSW 11 G 22 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Tue Aug 05 2025 65F 55F / 11% SSW 10 G 22 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Tue Aug 05 2025 65F 55F / 9% SW 12 G 24 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Tue Aug 05 2025 65F 55F / 7% SW 14 G 26 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Tue Aug 05 2025 62F 56F / 8% SW 15 G 27 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Tue Aug 05 2025 60F 55F / 7% SW 16 G 27 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 PM Tue Aug 05 2025 55F 53F / 12% SW 17 G 26 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 PM Tue Aug 05 2025 53F 52F / 11% WSW 15 G 24 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 PM Tue Aug 05 2025 53F 52F / 9% SSW 14 G 22 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 PM Tue Aug 05 2025 53F 52F / 12% SSW 17 G 27 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 AM Wed Aug 06 2025 52F 51F / 12% SSW 19 G 28 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 AM Wed Aug 06 2025 51F 51F / 5% SW 22 G 36 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 AM Wed Aug 06 2025 50F 50F / 10% SW 25 G 41 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 AM Wed Aug 06 2025 49F 49F / 15% SW 25 G 39 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 AM Wed Aug 06 2025 49F 49F / 12% SW 24 G 40 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 AM Wed Aug 06 2025 49F 49F / 14% SW 24 G 41 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 AM Wed Aug 06 2025 48F 49F / 17% SW 23 G 41 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 AM Wed Aug 06 2025 48F 50F / 21% SW 23 G 38 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 AM Wed Aug 06 2025 51F 52F / 18% SW 23 G 37 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 AM Wed Aug 06 2025 52F 53F / 19% SW 22 G 36 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 AM Wed Aug 06 2025 56F 53F / 14% SW 20 G 35 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 AM Wed Aug 06 2025 61F 53F / 9% SW 17 G 33 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 PM Wed Aug 06 2025 64F 56F / 5% SW 15 G 28 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 PM Wed Aug 06 2025 65F 57F / 9% SW 15 G 29 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 PM Wed Aug 06 2025 66F 57F / 11% SW 15 G 31 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 PM Wed Aug 06 2025 66F 58F / 16% SW 15 G 30 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 PM Wed Aug 06 2025 66F 58F / 12% SSW 12 G 25 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 PM Wed Aug 06 2025 67F 59F / 15% SW 14 G 28 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 PM Wed Aug 06 2025 65F 59F / 18% SW 15 G 27 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"