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 17-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 Sat Aug 16 2025 58F 53F / 46% S 12 G 23 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Sat Aug 16 2025 54F 51F / 64% S 11 G 20 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Sat Aug 16 2025 51F 48F / 58% S 14 G 24 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Sat Aug 16 2025 50F 48F / 43% SSE 13 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Sat Aug 16 2025 49F 48F / 44% SSE 14 G 22 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Sat Aug 16 2025 48F 47F / 46% SSE 13 G 23 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Sun Aug 17 2025 48F 47F / 50% SSE 14 G 24 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Sun Aug 17 2025 48F 47F / 41% S 14 G 24 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Sun Aug 17 2025 48F 46F / 53% SSW 16 G 28 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Sun Aug 17 2025 48F 46F / 61% SSW 16 G 27 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Sun Aug 17 2025 48F 46F / 62% SSW 18 G 29 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Sun Aug 17 2025 47F 46F / 54% SSW 18 G 28 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Sun Aug 17 2025 46F 46F / 48% SSW 17 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Sun Aug 17 2025 47F 46F / 46% SSW 15 G 26 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Sun Aug 17 2025 48F 46F / 35% S 17 G 28 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Sun Aug 17 2025 49F 46F / 36% SSW 16 G 28 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Sun Aug 17 2025 51F 47F / 37% S 12 G 20 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Sun Aug 17 2025 55F 48F / 35% SSE 9 G 18 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Sun Aug 17 2025 58F 50F / 34% SSE 8 G 16 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Sun Aug 17 2025 60F 51F / 36% S 8 G 18 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Sun Aug 17 2025 62F 52F / 33% S 8 G 18 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Sun Aug 17 2025 62F 53F / 32% SSW 9 G 21 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Sun Aug 17 2025 62F 53F / 32% SSW 11 G 23 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Sun Aug 17 2025 63F 54F / 30% SSW 12 G 25 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Sun Aug 17 2025 60F 54F / 24% SSW 11 G 22 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Sun Aug 17 2025 57F 53F / 18% SW 12 G 24 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 PM Sun Aug 17 2025 53F 50F / 10% SW 15 G 24 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 PM Sun Aug 17 2025 51F 49F / 7% SSW 13 G 23 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 PM Sun Aug 17 2025 50F 49F / 13% SW 13 G 22 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 PM Sun Aug 17 2025 50F 48F / 19% SW 14 G 24 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 AM Mon Aug 18 2025 49F 48F / 24% SW 16 G 25 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 AM Mon Aug 18 2025 48F 47F / 26% SSW 16 G 28 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 AM Mon Aug 18 2025 48F 46F / 29% SW 16 G 27 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 AM Mon Aug 18 2025 47F 46F / 26% SW 16 G 26 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 AM Mon Aug 18 2025 47F 46F / 30% SW 15 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 AM Mon Aug 18 2025 46F 45F / 33% SW 15 G 25 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 AM Mon Aug 18 2025 45F 45F / 35% SW 15 G 24 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 AM Mon Aug 18 2025 45F 46F / 39% SSW 16 G 25 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 AM Mon Aug 18 2025 47F 48F / 33% SSW 15 G 24 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 AM Mon Aug 18 2025 49F 49F / 32% S 15 G 26 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 AM Mon Aug 18 2025 53F 49F / 34% SSW 16 G 28 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 AM Mon Aug 18 2025 58F 50F / 43% SSW 13 G 26 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 PM Mon Aug 18 2025 61F 53F / 37% SSW 12 G 24 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 PM Mon Aug 18 2025 62F 54F / 27% SW 12 G 26 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 PM Mon Aug 18 2025 64F 55F / 27% SW 11 G 24 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 PM Mon Aug 18 2025 64F 56F / 25% SW 12 G 26 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 PM Mon Aug 18 2025 64F 56F / 20% SW 11 G 24 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 PM Mon Aug 18 2025 65F 57F / 14% SW 12 G 26 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 PM Mon Aug 18 2025 63F 57F / 9% SW 15 G 26 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"