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 21-Jul-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 Mon Jul 21 2025 60F 51F / 41% S 17 G 37 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Mon Jul 21 2025 60F 51F / 51% SSW 15 G 34 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Mon Jul 21 2025 62F 51F / 45% S 12 G 29 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Mon Jul 21 2025 61F 52F / 46% S 13 G 31 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Mon Jul 21 2025 60F 52F / 49% S 11 G 24 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Mon Jul 21 2025 57F 50F / 73% SSE 13 G 27 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Mon Jul 21 2025 58F 51F / 71% S 14 G 28 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Mon Jul 21 2025 57F 51F / 60% S 13 G 25 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Mon Jul 21 2025 48F 46F / 79% SW 17 G 29 MPH 13800 FT 0:1 / -% 0.12" / 0.0" 0.12" / 0.0" 9 09 PM Mon Jul 21 2025 50F 47F / 61% SSW 18 G 34 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 10 10 PM Mon Jul 21 2025 51F 47F / 71% SSW 23 G 41 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 11 11 PM Mon Jul 21 2025 49F 46F / 82% S 20 G 34 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 12 12 AM Tue Jul 22 2025 48F 47F / 69% SSW 22 G 36 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 13 01 AM Tue Jul 22 2025 48F 46F / 53% S 21 G 41 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 14 02 AM Tue Jul 22 2025 48F 46F / 40% SSW 22 G 39 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 15 03 AM Tue Jul 22 2025 47F 46F / 33% SSW 23 G 36 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 16 04 AM Tue Jul 22 2025 48F 46F / 37% SSW 22 G 35 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 17 05 AM Tue Jul 22 2025 47F 46F / 39% SSW 24 G 40 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 18 06 AM Tue Jul 22 2025 47F 45F / 38% SW 22 G 37 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 19 07 AM Tue Jul 22 2025 46F 44F / 45% SW 19 G 32 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 20 08 AM Tue Jul 22 2025 47F 45F / 41% SW 19 G 32 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 21 09 AM Tue Jul 22 2025 48F 46F / 49% WSW 19 G 29 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 22 10 AM Tue Jul 22 2025 50F 45F / 47% SW 15 G 27 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 23 11 AM Tue Jul 22 2025 54F 46F / 46% SSW 13 G 27 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 24 12 PM Tue Jul 22 2025 57F 48F / 50% SSW 12 G 26 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 25 01 PM Tue Jul 22 2025 59F 50F / 43% SW 13 G 27 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 26 02 PM Tue Jul 22 2025 61F 50F / 33% SW 10 G 24 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 27 03 PM Tue Jul 22 2025 61F 51F / 38% SW 12 G 27 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 28 04 PM Tue Jul 22 2025 61F 51F / 41% SSW 11 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 29 05 PM Tue Jul 22 2025 60F 51F / 43% SW 12 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 30 06 PM Tue Jul 22 2025 58F 51F / 43% SW 11 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 31 07 PM Tue Jul 22 2025 56F 51F / 40% SW 12 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 32 08 PM Tue Jul 22 2025 53F 48F / 40% SW 14 G 24 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 33 09 PM Tue Jul 22 2025 50F 48F / 36% SW 15 G 25 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 34 10 PM Tue Jul 22 2025 50F 48F / 36% SW 15 G 24 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 35 11 PM Tue Jul 22 2025 48F 47F / 41% SW 14 G 24 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 36 12 AM Wed Jul 23 2025 48F 47F / 38% SSW 16 G 27 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 37 01 AM Wed Jul 23 2025 49F 48F / 48% S 16 G 29 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 38 02 AM Wed Jul 23 2025 48F 48F / 51% SSW 17 G 27 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 39 03 AM Wed Jul 23 2025 47F 47F / 43% SSW 19 G 28 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 40 04 AM Wed Jul 23 2025 47F 47F / 37% SW 18 G 28 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 41 05 AM Wed Jul 23 2025 46F 46F / 35% SW 18 G 31 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 42 06 AM Wed Jul 23 2025 46F 45F / 32% SW 18 G 29 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 43 07 AM Wed Jul 23 2025 46F 45F / 56% WSW 16 G 25 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 44 08 AM Wed Jul 23 2025 48F 47F / 40% SW 15 G 26 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 45 09 AM Wed Jul 23 2025 50F 49F / 46% WSW 13 G 25 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 46 10 AM Wed Jul 23 2025 53F 49F / 30% WSW 10 G 21 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 47 11 AM Wed Jul 23 2025 57F 50F / 31% SW 8 G 16 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0" 48 12 PM Wed Jul 23 2025 60F 51F / 31% SW 8 G 18 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.12" / 0.0"