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 17-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 Thu Jul 17 2025 65F 55F / 31% SSW 8 G 14 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Thu Jul 17 2025 65F 56F / 21% WSW 9 G 16 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Thu Jul 17 2025 67F 56F / 16% SW 8 G 17 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Thu Jul 17 2025 67F 57F / 22% WSW 10 G 19 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Thu Jul 17 2025 67F 58F / 21% WSW 9 G 15 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Thu Jul 17 2025 64F 57F / 21% WSW 12 G 22 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Thu Jul 17 2025 61F 57F / 20% SW 7 G 12 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Thu Jul 17 2025 61F 56F / 23% W 12 G 18 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Thu Jul 17 2025 58F 55F / 26% WSW 9 G 14 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Thu Jul 17 2025 54F 52F / 34% S 12 G 20 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Thu Jul 17 2025 53F 52F / 35% SSW 14 G 21 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Thu Jul 17 2025 54F 52F / 27% SSW 14 G 21 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Fri Jul 18 2025 52F 51F / 45% SSW 18 G 30 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Fri Jul 18 2025 51F 50F / 46% SW 17 G 31 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Fri Jul 18 2025 51F 50F / 46% S 13 G 22 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Fri Jul 18 2025 51F 49F / 46% S 14 G 21 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Fri Jul 18 2025 50F 49F / 49% SSW 13 G 16 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Fri Jul 18 2025 50F 49F / 49% SSW 10 G 14 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Fri Jul 18 2025 50F 49F / 41% SW 11 G 15 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Fri Jul 18 2025 49F 49F / 49% SW 12 G 16 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Fri Jul 18 2025 50F 49F / 49% SSW 14 G 20 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Fri Jul 18 2025 50F 48F / 57% S 13 G 19 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Fri Jul 18 2025 53F 48F / 51% SSE 9 G 15 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Fri Jul 18 2025 58F 49F / 41% SE 6 G 15 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Fri Jul 18 2025 60F 51F / 44% ESE 8 G 17 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Fri Jul 18 2025 62F 53F / 42% ESE 8 G 19 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Fri Jul 18 2025 62F 53F / 34% S 7 G 17 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Fri Jul 18 2025 63F 53F / 43% SW 9 G 21 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Fri Jul 18 2025 63F 54F / 36% S 8 G 21 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Fri Jul 18 2025 63F 55F / 42% SW 6 G 15 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Fri Jul 18 2025 61F 54F / 43% WSW 8 G 15 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Fri Jul 18 2025 58F 53F / 48% W 11 G 18 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Fri Jul 18 2025 54F 49F / 72% W 14 G 20 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Fri Jul 18 2025 49F 47F / 75% W 14 G 21 MPH 14400 FT 0:1 / -% 0.02" / 0.0" 0.02" / 0.0" 34 10 PM Fri Jul 18 2025 47F 46F / 71% W 15 G 19 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 35 11 PM Fri Jul 18 2025 47F 45F / 82% WSW 15 G 17 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 36 12 AM Sat Jul 19 2025 48F 45F / 87% S 12 G 21 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 37 01 AM Sat Jul 19 2025 48F 47F / 74% S 11 G 19 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 38 02 AM Sat Jul 19 2025 48F 47F / 71% W 12 G 16 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 39 03 AM Sat Jul 19 2025 48F 46F / 69% SSW 15 G 22 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 40 04 AM Sat Jul 19 2025 47F 47F / 56% SW 18 G 27 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 41 05 AM Sat Jul 19 2025 47F 46F / 57% WSW 17 G 24 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 42 06 AM Sat Jul 19 2025 46F 45F / 64% WSW 16 G 23 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 43 07 AM Sat Jul 19 2025 46F 45F / 81% WSW 14 G 21 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 44 08 AM Sat Jul 19 2025 48F 47F / 68% WSW 14 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 45 09 AM Sat Jul 19 2025 50F 48F / 67% WSW 14 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 46 10 AM Sat Jul 19 2025 53F 49F / 62% W 13 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 47 11 AM Sat Jul 19 2025 59F 50F / 59% W 11 G 19 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 48 12 PM Sat Jul 19 2025 62F 52F / 51% W 9 G 19 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0"