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 09-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 Wed Jul 09 2025 66F 56F / 22% SSW 12 G 26 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Wed Jul 09 2025 66F 57F / 27% SSW 14 G 29 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Wed Jul 09 2025 69F 57F / 20% SSW 15 G 31 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Wed Jul 09 2025 69F 59F / 23% SSW 15 G 32 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Wed Jul 09 2025 69F 59F / 21% SW 16 G 30 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Wed Jul 09 2025 68F 60F / 16% SW 16 G 30 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Wed Jul 09 2025 65F 60F / 18% SW 18 G 31 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Wed Jul 09 2025 64F 59F / 19% SW 18 G 31 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Wed Jul 09 2025 58F 56F / 27% WSW 11 G 17 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Wed Jul 09 2025 59F 56F / 16% SSW 19 G 34 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Wed Jul 09 2025 57F 56F / 16% SW 19 G 32 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Wed Jul 09 2025 56F 55F / 13% SW 20 G 32 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Thu Jul 10 2025 55F 54F / 17% WSW 17 G 25 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Thu Jul 10 2025 51F 50F / 18% W 22 G 37 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Thu Jul 10 2025 50F 50F / 24% WNW 23 G 34 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Thu Jul 10 2025 48F 49F / 45% WNW 25 G 34 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Thu Jul 10 2025 47F 47F / 47% WNW 22 G 31 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Thu Jul 10 2025 47F 47F / 46% WNW 21 G 33 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Thu Jul 10 2025 45F 46F / 47% WNW 21 G 29 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Thu Jul 10 2025 46F 45F / 52% WNW 18 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Thu Jul 10 2025 46F 45F / 54% W 14 G 20 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Thu Jul 10 2025 46F 45F / 57% W 13 G 19 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Thu Jul 10 2025 50F 45F / 48% WNW 9 G 14 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Thu Jul 10 2025 56F 47F / 51% WNW 10 G 18 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Thu Jul 10 2025 58F 48F / 47% WNW 12 G 19 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Thu Jul 10 2025 59F 50F / 46% WNW 12 G 19 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Thu Jul 10 2025 62F 51F / 47% WNW 13 G 23 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Thu Jul 10 2025 63F 52F / 40% WNW 15 G 26 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Thu Jul 10 2025 63F 52F / 43% WNW 15 G 24 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Thu Jul 10 2025 62F 53F / 30% WNW 13 G 22 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Thu Jul 10 2025 59F 52F / 41% WNW 15 G 23 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Thu Jul 10 2025 56F 51F / 47% WNW 15 G 25 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Thu Jul 10 2025 53F 48F / 48% WNW 17 G 25 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Thu Jul 10 2025 50F 47F / 46% WNW 18 G 29 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Thu Jul 10 2025 49F 47F / 44% WNW 18 G 28 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Thu Jul 10 2025 48F 46F / 49% WNW 17 G 23 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Fri Jul 11 2025 47F 46F / 42% NW 14 G 21 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Fri Jul 11 2025 47F 47F / 42% WNW 17 G 24 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Fri Jul 11 2025 47F 48F / 43% WNW 18 G 26 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Fri Jul 11 2025 47F 47F / 38% WNW 20 G 27 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Fri Jul 11 2025 47F 47F / 37% WNW 20 G 29 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Fri Jul 11 2025 46F 46F / 35% WNW 21 G 30 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Fri Jul 11 2025 46F 46F / 32% WNW 23 G 34 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Fri Jul 11 2025 46F 46F / 41% WNW 21 G 29 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Fri Jul 11 2025 48F 48F / 39% WNW 21 G 29 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Fri Jul 11 2025 50F 48F / 44% WNW 20 G 31 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Fri Jul 11 2025 52F 48F / 42% WNW 18 G 30 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Fri Jul 11 2025 57F 49F / 42% WNW 17 G 25 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Fri Jul 11 2025 60F 50F / 43% W 14 G 25 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"