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 27-Jun-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 Fri Jun 27 2025 61F 52F / 14% SSW 9 G 19 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Fri Jun 27 2025 62F 53F / 13% SSW 10 G 20 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Fri Jun 27 2025 64F 53F / 12% SSW 9 G 20 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Fri Jun 27 2025 65F 55F / 14% SSW 10 G 23 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Fri Jun 27 2025 64F 55F / 14% SSW 10 G 21 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Fri Jun 27 2025 64F 56F / 7% SW 10 G 20 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Fri Jun 27 2025 62F 56F / 7% SW 11 G 19 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Fri Jun 27 2025 59F 54F / 14% WSW 9 G 14 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Fri Jun 27 2025 55F 52F / 21% WNW 11 G 16 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Fri Jun 27 2025 52F 50F / 18% WSW 11 G 15 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Fri Jun 27 2025 51F 51F / 15% WSW 13 G 17 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Fri Jun 27 2025 52F 51F / 8% SW 16 G 21 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sat Jun 28 2025 52F 51F / 10% SW 16 G 23 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sat Jun 28 2025 51F 50F / 10% SSW 18 G 30 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sat Jun 28 2025 49F 49F / 20% SSW 17 G 26 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Sat Jun 28 2025 48F 49F / 20% SSW 18 G 27 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Sat Jun 28 2025 48F 48F / 23% SSW 18 G 28 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Sat Jun 28 2025 47F 49F / 21% SSW 18 G 29 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Sat Jun 28 2025 47F 48F / 20% SW 18 G 28 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Sat Jun 28 2025 47F 47F / 25% WSW 17 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Sat Jun 28 2025 48F 48F / 29% WSW 17 G 25 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Sat Jun 28 2025 51F 49F / 27% WSW 16 G 24 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Sat Jun 28 2025 54F 49F / 23% WSW 13 G 22 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Sat Jun 28 2025 58F 50F / 16% WSW 11 G 19 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Sat Jun 28 2025 60F 52F / 25% W 11 G 19 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Sat Jun 28 2025 62F 53F / 22% W 12 G 20 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Sat Jun 28 2025 64F 53F / 23% W 11 G 21 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Sat Jun 28 2025 64F 54F / 28% W 13 G 22 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Sat Jun 28 2025 64F 54F / 24% W 12 G 20 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Sat Jun 28 2025 63F 54F / 26% W 12 G 21 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Sat Jun 28 2025 60F 54F / 28% WNW 13 G 22 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Sat Jun 28 2025 57F 53F / 30% W 15 G 23 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Sat Jun 28 2025 54F 50F / 34% W 17 G 26 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Sat Jun 28 2025 52F 49F / 29% W 19 G 28 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Sat Jun 28 2025 51F 49F / 27% W 19 G 27 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Sat Jun 28 2025 50F 48F / 31% WNW 18 G 24 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Sun Jun 29 2025 50F 48F / 37% WNW 15 G 22 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Sun Jun 29 2025 50F 50F / 38% W 19 G 26 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Sun Jun 29 2025 48F 49F / 41% WNW 17 G 23 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Sun Jun 29 2025 48F 48F / 39% W 18 G 26 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Sun Jun 29 2025 49F 49F / 38% W 18 G 24 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Sun Jun 29 2025 49F 49F / 32% W 17 G 23 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Sun Jun 29 2025 49F 49F / 33% WSW 16 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Sun Jun 29 2025 48F 47F / 44% W 17 G 23 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Sun Jun 29 2025 49F 49F / 34% W 17 G 25 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Sun Jun 29 2025 51F 50F / 43% W 16 G 25 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Sun Jun 29 2025 54F 51F / 38% W 13 G 22 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Sun Jun 29 2025 60F 52F / 37% W 11 G 18 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Sun Jun 29 2025 63F 54F / 39% W 10 G 19 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"