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 06Z 12-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 12 AM Tue Aug 12 2025 51F 49F / 40% NE 12 G 20 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Tue Aug 12 2025 49F 49F / 43% E 10 G 18 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Tue Aug 12 2025 49F 48F / 42% ENE 12 G 18 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Tue Aug 12 2025 48F 48F / 45% ESE 11 G 17 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Tue Aug 12 2025 48F 48F / 37% SE 10 G 14 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Tue Aug 12 2025 49F 48F / 39% S 9 G 13 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Tue Aug 12 2025 49F 48F / 37% SW 10 G 12 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Tue Aug 12 2025 49F 48F / 38% SW 10 G 14 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Tue Aug 12 2025 50F 49F / 37% SW 10 G 15 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Tue Aug 12 2025 52F 50F / 35% SSW 11 G 15 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Tue Aug 12 2025 56F 51F / 29% WSW 8 G 15 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Tue Aug 12 2025 61F 53F / 24% WNW 7 G 14 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Tue Aug 12 2025 64F 55F / 23% WNW 8 G 14 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Tue Aug 12 2025 65F 56F / 20% WNW 7 G 13 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Tue Aug 12 2025 66F 57F / 20% WNW 7 G 15 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Tue Aug 12 2025 67F 58F / 21% W 7 G 16 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Tue Aug 12 2025 67F 58F / 22% W 7 G 15 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Tue Aug 12 2025 67F 58F / 25% W 9 G 18 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Tue Aug 12 2025 64F 58F / 25% W 9 G 15 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Tue Aug 12 2025 61F 56F / 30% W 9 G 15 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Tue Aug 12 2025 56F 54F / 33% W 11 G 16 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Tue Aug 12 2025 54F 53F / 31% W 14 G 20 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Tue Aug 12 2025 53F 53F / 27% W 14 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 PM Tue Aug 12 2025 53F 53F / 19% W 15 G 21 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 AM Wed Aug 13 2025 54F 53F / 13% WNW 17 G 23 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 AM Wed Aug 13 2025 53F 52F / 15% WNW 18 G 26 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 AM Wed Aug 13 2025 53F 52F / 12% WNW 20 G 27 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 AM Wed Aug 13 2025 53F 52F / 13% WNW 20 G 27 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 AM Wed Aug 13 2025 52F 52F / 18% WNW 20 G 27 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 AM Wed Aug 13 2025 53F 51F / 23% WNW 19 G 27 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 AM Wed Aug 13 2025 52F 51F / 26% WNW 18 G 24 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 AM Wed Aug 13 2025 51F 50F / 29% W 17 G 23 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 AM Wed Aug 13 2025 51F 51F / 24% WNW 16 G 20 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 AM Wed Aug 13 2025 54F 52F / 27% W 15 G 21 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 AM Wed Aug 13 2025 58F 53F / 20% WSW 13 G 21 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 AM Wed Aug 13 2025 62F 54F / 14% WSW 13 G 23 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 PM Wed Aug 13 2025 65F 56F / 13% W 12 G 22 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 PM Wed Aug 13 2025 69F 60F / 5% WSW 13 G 21 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 PM Wed Aug 13 2025 70F 60F / 6% W 13 G 25 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 PM Wed Aug 13 2025 72F 62F / 11% W 12 G 24 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 PM Wed Aug 13 2025 67F 59F / 21% WNW 15 G 24 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 PM Wed Aug 13 2025 70F 60F / 13% W 9 G 14 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 PM Wed Aug 13 2025 67F 60F / 3% W 17 G 27 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 PM Wed Aug 13 2025 64F 61F / 10% W 17 G 24 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 PM Wed Aug 13 2025 60F 58F / 20% W 16 G 22 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 PM Wed Aug 13 2025 55F 55F / 31% WSW 13 G 20 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 PM Wed Aug 13 2025 53F 54F / 37% W 14 G 21 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 PM Wed Aug 13 2025 53F 54F / 38% W 15 G 22 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 AM Thu Aug 14 2025 53F 53F / 32% W 14 G 21 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"