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 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 06 PM Mon Aug 11 2025 60F 54F / 37% WNW 8 G 16 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Mon Aug 11 2025 57F 53F / 47% WNW 9 G 15 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Mon Aug 11 2025 53F 50F / 50% WNW 9 G 14 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Mon Aug 11 2025 50F 50F / 44% NNW 8 G 13 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Mon Aug 11 2025 50F 50F / 42% NE 10 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Mon Aug 11 2025 50F 50F / 43% NNE 12 G 19 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Tue Aug 12 2025 49F 49F / 48% ENE 11 G 19 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Tue Aug 12 2025 49F 49F / 51% E 11 G 17 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Tue Aug 12 2025 49F 49F / 54% E 10 G 16 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Tue Aug 12 2025 49F 49F / 43% SE 11 G 15 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Tue Aug 12 2025 49F 48F / 40% SSE 10 G 14 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Tue Aug 12 2025 49F 49F / 48% SSW 9 G 12 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Tue Aug 12 2025 49F 49F / 44% WSW 9 G 13 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Tue Aug 12 2025 49F 48F / 43% WSW 12 G 16 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Tue Aug 12 2025 50F 49F / 49% WSW 10 G 14 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Tue Aug 12 2025 52F 50F / 44% SW 10 G 14 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Tue Aug 12 2025 55F 51F / 35% WSW 9 G 15 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Tue Aug 12 2025 59F 53F / 31% WNW 7 G 14 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Tue Aug 12 2025 63F 54F / 32% WNW 8 G 15 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Tue Aug 12 2025 65F 56F / 27% WNW 7 G 14 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Tue Aug 12 2025 67F 57F / 25% W 7 G 16 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Tue Aug 12 2025 67F 58F / 26% W 7 G 17 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Tue Aug 12 2025 67F 58F / 27% W 8 G 16 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Tue Aug 12 2025 67F 58F / 20% W 10 G 19 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Tue Aug 12 2025 63F 58F / 15% W 10 G 18 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Tue Aug 12 2025 61F 57F / 24% W 10 G 17 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 PM Tue Aug 12 2025 57F 53F / 29% W 11 G 17 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 PM Tue Aug 12 2025 54F 53F / 28% W 13 G 19 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 PM Tue Aug 12 2025 54F 53F / 22% WSW 14 G 20 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 PM Tue Aug 12 2025 53F 53F / 17% W 15 G 20 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 AM Wed Aug 13 2025 53F 52F / 16% WNW 17 G 22 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 AM Wed Aug 13 2025 53F 52F / 14% WNW 19 G 26 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 AM Wed Aug 13 2025 53F 52F / 12% WNW 23 G 30 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 AM Wed Aug 13 2025 53F 51F / 16% WNW 22 G 29 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 AM Wed Aug 13 2025 52F 51F / 20% WNW 20 G 28 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 AM Wed Aug 13 2025 52F 51F / 19% WNW 20 G 28 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 AM Wed Aug 13 2025 51F 50F / 24% WNW 18 G 25 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 AM Wed Aug 13 2025 51F 51F / 25% WNW 18 G 22 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 AM Wed Aug 13 2025 51F 52F / 21% W 16 G 19 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 AM Wed Aug 13 2025 55F 55F / 19% WSW 15 G 21 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 AM Wed Aug 13 2025 59F 54F / 19% WSW 14 G 22 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 AM Wed Aug 13 2025 64F 56F / 9% WSW 12 G 22 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 PM Wed Aug 13 2025 68F 59F / 6% WSW 11 G 20 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 PM Wed Aug 13 2025 69F 60F / 5% WSW 12 G 23 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 PM Wed Aug 13 2025 70F 60F / 8% WSW 13 G 23 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 PM Wed Aug 13 2025 71F 61F / 7% WSW 14 G 26 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 PM Wed Aug 13 2025 66F 60F / 14% SW 9 G 19 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 PM Wed Aug 13 2025 69F 61F / 7% SW 13 G 24 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 PM Wed Aug 13 2025 68F 61F / 11% W 15 G 23 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"