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 18Z 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 12 PM Tue Aug 05 2025 62F 53F / 22% SW 9 G 17 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Tue Aug 05 2025 63F 54F / 20% SW 8 G 16 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Tue Aug 05 2025 65F 54F / 14% SSW 9 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Tue Aug 05 2025 65F 55F / 15% SSW 11 G 23 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Tue Aug 05 2025 65F 56F / 14% SSW 10 G 21 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Tue Aug 05 2025 65F 57F / 8% SW 12 G 24 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Tue Aug 05 2025 62F 57F / 5% SSW 14 G 27 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Tue Aug 05 2025 60F 55F / 3% SW 15 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Tue Aug 05 2025 55F 53F / 8% SW 16 G 26 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Tue Aug 05 2025 53F 51F / 18% WSW 14 G 20 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Tue Aug 05 2025 53F 52F / 13% SW 14 G 20 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Tue Aug 05 2025 54F 53F / 3% SSW 16 G 26 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Wed Aug 06 2025 52F 52F / 7% SSE 16 G 26 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Wed Aug 06 2025 52F 51F / 6% SSW 19 G 34 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Wed Aug 06 2025 51F 50F / 10% SW 23 G 39 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Wed Aug 06 2025 50F 50F / 11% SW 25 G 41 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Wed Aug 06 2025 50F 49F / 13% SW 23 G 39 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Wed Aug 06 2025 49F 49F / 15% SW 23 G 39 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Wed Aug 06 2025 49F 48F / 16% SW 23 G 41 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Wed Aug 06 2025 48F 48F / 19% SSW 24 G 41 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Wed Aug 06 2025 50F 49F / 26% SSW 24 G 42 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Wed Aug 06 2025 52F 50F / 20% SSW 23 G 40 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Wed Aug 06 2025 55F 50F / 16% SSW 21 G 38 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Wed Aug 06 2025 59F 51F / 7% SSW 19 G 36 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Wed Aug 06 2025 62F 52F / 16% SSW 17 G 33 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Wed Aug 06 2025 64F 54F / 11% SW 17 G 31 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Wed Aug 06 2025 66F 54F / 14% SW 14 G 30 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Wed Aug 06 2025 67F 57F / 13% SW 15 G 30 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Wed Aug 06 2025 67F 57F / 12% SW 14 G 28 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Wed Aug 06 2025 67F 58F / 11% SW 13 G 28 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Wed Aug 06 2025 64F 57F / 13% SW 16 G 28 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Wed Aug 06 2025 61F 57F / 15% SW 16 G 27 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Wed Aug 06 2025 57F 54F / 20% SW 16 G 26 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Wed Aug 06 2025 55F 54F / 18% SW 18 G 30 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Wed Aug 06 2025 55F 54F / 12% SW 19 G 34 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Wed Aug 06 2025 53F 53F / 14% SW 19 G 33 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Thu Aug 07 2025 53F 52F / 18% SW 21 G 38 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Thu Aug 07 2025 54F 54F / 12% SW 24 G 42 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Thu Aug 07 2025 54F 54F / 20% SW 23 G 38 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Thu Aug 07 2025 53F 52F / 16% SW 23 G 40 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Thu Aug 07 2025 53F 53F / 6% SW 25 G 40 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Thu Aug 07 2025 51F 52F / 1% SW 24 G 43 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Thu Aug 07 2025 51F 52F / 0% SW 25 G 43 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Thu Aug 07 2025 51F 51F / 16% SW 24 G 37 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Thu Aug 07 2025 51F 51F / 4% SW 24 G 38 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Thu Aug 07 2025 52F 52F / 14% SW 22 G 39 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Thu Aug 07 2025 55F 52F / 9% SW 20 G 36 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Thu Aug 07 2025 60F 52F / 8% SW 19 G 34 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Thu Aug 07 2025 64F 54F / 13% SW 17 G 34 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"