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 12Z 20-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 06 AM Sun Jul 20 2025 48F 48F / 43% SW 17 G 27 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Sun Jul 20 2025 49F 49F / 33% SW 17 G 25 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Sun Jul 20 2025 51F 49F / 32% SW 17 G 25 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Sun Jul 20 2025 52F 50F / 32% SW 17 G 26 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Sun Jul 20 2025 54F 50F / 32% SW 16 G 27 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Sun Jul 20 2025 60F 51F / 34% SSW 14 G 24 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Sun Jul 20 2025 63F 53F / 30% SW 12 G 23 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Sun Jul 20 2025 64F 54F / 26% SSW 13 G 24 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Sun Jul 20 2025 66F 55F / 23% SW 12 G 25 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Sun Jul 20 2025 67F 57F / 20% SW 11 G 22 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Sun Jul 20 2025 64F 56F / 18% SW 12 G 24 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Sun Jul 20 2025 64F 57F / 16% SSW 10 G 17 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Sun Jul 20 2025 64F 58F / 11% WSW 8 G 16 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Sun Jul 20 2025 62F 56F / 12% SW 11 G 20 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Sun Jul 20 2025 57F 53F / 29% SW 15 G 27 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Sun Jul 20 2025 54F 52F / 28% WSW 15 G 25 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Sun Jul 20 2025 54F 52F / 27% SW 13 G 22 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Sun Jul 20 2025 54F 52F / 27% SW 17 G 28 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Mon Jul 21 2025 53F 52F / 24% SW 19 G 34 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Mon Jul 21 2025 52F 51F / 24% SW 19 G 34 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Mon Jul 21 2025 51F 50F / 34% SSW 17 G 28 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Mon Jul 21 2025 50F 49F / 34% SW 19 G 35 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Mon Jul 21 2025 50F 48F / 32% SW 22 G 37 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Mon Jul 21 2025 50F 48F / 30% SW 23 G 39 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Mon Jul 21 2025 49F 48F / 31% SW 21 G 36 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Mon Jul 21 2025 49F 48F / 27% SW 19 G 33 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Mon Jul 21 2025 51F 48F / 31% SW 19 G 34 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Mon Jul 21 2025 52F 48F / 39% SW 18 G 30 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 AM Mon Jul 21 2025 54F 48F / 39% SW 16 G 32 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 AM Mon Jul 21 2025 56F 48F / 34% SSW 16 G 33 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 PM Mon Jul 21 2025 57F 48F / 45% SSW 15 G 35 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 PM Mon Jul 21 2025 58F 49F / 54% SSW 17 G 37 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 PM Mon Jul 21 2025 56F 47F / 61% S 14 G 30 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 PM Mon Jul 21 2025 57F 48F / 57% S 13 G 29 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 PM Mon Jul 21 2025 56F 48F / 64% SSW 14 G 31 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 PM Mon Jul 21 2025 58F 49F / 64% SSW 16 G 30 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 PM Mon Jul 21 2025 57F 49F / 65% SSW 15 G 30 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 PM Mon Jul 21 2025 53F 49F / 88% SSW 19 G 34 MPH 13700 FT 0:1 / -% 0.02" / 0.0" 0.02" / 0.0" 38 08 PM Mon Jul 21 2025 52F 49F / 88% SSW 16 G 32 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 39 09 PM Mon Jul 21 2025 50F 47F / 82% SSW 20 G 34 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 40 10 PM Mon Jul 21 2025 50F 48F / 84% SSW 21 G 35 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 41 11 PM Mon Jul 21 2025 50F 47F / 73% S 19 G 35 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 42 12 AM Tue Jul 22 2025 50F 47F / 63% S 21 G 39 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 43 01 AM Tue Jul 22 2025 48F 47F / 58% S 20 G 38 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 44 02 AM Tue Jul 22 2025 49F 47F / 49% SSW 21 G 36 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 45 03 AM Tue Jul 22 2025 48F 46F / 40% SSW 19 G 36 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 46 04 AM Tue Jul 22 2025 47F 46F / 40% SSW 21 G 37 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 47 05 AM Tue Jul 22 2025 46F 45F / 40% SSW 20 G 36 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 48 06 AM Tue Jul 22 2025 46F 44F / 47% SSW 21 G 35 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0"