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 22-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 Thu Aug 21 2025 65F 59F / 41% WSW 8 G 14 MPH 15500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Thu Aug 21 2025 62F 59F / 35% WSW 11 G 17 MPH 15400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Thu Aug 21 2025 58F 55F / 44% SW 10 G 15 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Thu Aug 21 2025 57F 55F / 39% SW 12 G 18 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Thu Aug 21 2025 56F 55F / 40% SW 12 G 18 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Thu Aug 21 2025 56F 55F / 40% SW 11 G 16 MPH 15300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Fri Aug 22 2025 56F 56F / 37% SSW 11 G 18 MPH 15200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Fri Aug 22 2025 56F 55F / 37% SW 13 G 20 MPH 15400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Fri Aug 22 2025 56F 55F / 40% SW 12 G 20 MPH 15400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Fri Aug 22 2025 56F 54F / 37% WSW 13 G 19 MPH 15300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Fri Aug 22 2025 55F 54F / 32% WSW 13 G 21 MPH 15200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Fri Aug 22 2025 55F 54F / 44% WSW 15 G 21 MPH 15200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Fri Aug 22 2025 54F 54F / 41% WSW 14 G 19 MPH 15300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Fri Aug 22 2025 54F 53F / 44% WSW 15 G 22 MPH 15300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Fri Aug 22 2025 54F 53F / 34% W 15 G 22 MPH 15300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Fri Aug 22 2025 55F 53F / 41% WSW 15 G 23 MPH 15400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Fri Aug 22 2025 57F 53F / 40% WNW 16 G 24 MPH 15600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Fri Aug 22 2025 59F 54F / 44% W 12 G 18 MPH 15300 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 18 12 PM Fri Aug 22 2025 62F 54F / 44% WSW 8 G 13 MPH 15600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 19 01 PM Fri Aug 22 2025 64F 56F / 36% WSW 14 G 27 MPH 15400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 20 02 PM Fri Aug 22 2025 66F 57F / 40% W 13 G 21 MPH 15400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 21 03 PM Fri Aug 22 2025 66F 56F / 36% W 11 G 21 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 22 04 PM Fri Aug 22 2025 66F 57F / 42% WNW 11 G 18 MPH 15200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 23 05 PM Fri Aug 22 2025 66F 57F / 41% W 13 G 23 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 24 06 PM Fri Aug 22 2025 63F 57F / 39% WSW 12 G 20 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 25 07 PM Fri Aug 22 2025 61F 56F / 42% W 12 G 18 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 26 08 PM Fri Aug 22 2025 58F 54F / 48% WSW 11 G 15 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 27 09 PM Fri Aug 22 2025 55F 54F / 47% SSW 13 G 16 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 28 10 PM Fri Aug 22 2025 55F 54F / 35% WSW 11 G 15 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 29 11 PM Fri Aug 22 2025 54F 53F / 44% SSW 13 G 17 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 30 12 AM Sat Aug 23 2025 52F 52F / 44% SSW 14 G 18 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 31 01 AM Sat Aug 23 2025 52F 53F / 41% WSW 13 G 21 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 32 02 AM Sat Aug 23 2025 52F 52F / 42% WSW 12 G 18 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 33 03 AM Sat Aug 23 2025 52F 51F / 51% WSW 13 G 17 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 34 04 AM Sat Aug 23 2025 52F 51F / 52% W 12 G 18 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 35 05 AM Sat Aug 23 2025 52F 51F / 54% W 13 G 19 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 36 06 AM Sat Aug 23 2025 52F 51F / 57% W 13 G 18 MPH 14900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 37 07 AM Sat Aug 23 2025 51F 51F / 51% W 14 G 16 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 38 08 AM Sat Aug 23 2025 51F 52F / 47% WSW 13 G 17 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 39 09 AM Sat Aug 23 2025 55F 54F / 38% W 13 G 19 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 40 10 AM Sat Aug 23 2025 59F 55F / 41% W 11 G 18 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 41 11 AM Sat Aug 23 2025 63F 57F / 34% W 9 G 15 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 42 12 PM Sat Aug 23 2025 67F 59F / 34% W 9 G 16 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 43 01 PM Sat Aug 23 2025 68F 60F / 26% W 10 G 20 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 44 02 PM Sat Aug 23 2025 68F 60F / 30% W 10 G 19 MPH 14900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 45 03 PM Sat Aug 23 2025 68F 60F / 36% W 15 G 25 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 46 04 PM Sat Aug 23 2025 67F 59F / 42% W 13 G 23 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 47 05 PM Sat Aug 23 2025 65F 57F / 48% W 12 G 21 MPH 15200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 48 06 PM Sat Aug 23 2025 63F 58F / 49% W 10 G 16 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0"