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 02-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 PM Sat Aug 02 2025 62F 53F / 18% SW 13 G 25 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Sat Aug 02 2025 62F 53F / 16% SW 12 G 23 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Sat Aug 02 2025 65F 54F / 15% SW 10 G 21 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Sat Aug 02 2025 60F 52F / 27% SW 9 G 20 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Sat Aug 02 2025 61F 53F / 30% WSW 9 G 14 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Sat Aug 02 2025 62F 54F / 18% W 13 G 21 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Sat Aug 02 2025 59F 53F / 14% W 15 G 23 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Sat Aug 02 2025 56F 51F / 13% W 19 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Sat Aug 02 2025 52F 48F / 35% WNW 21 G 31 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Sat Aug 02 2025 47F 46F / 40% NW 16 G 26 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Sat Aug 02 2025 46F 46F / 39% SSW 15 G 19 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Sat Aug 02 2025 47F 47F / 32% W 15 G 20 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sun Aug 03 2025 46F 47F / 33% W 18 G 24 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sun Aug 03 2025 46F 46F / 31% W 20 G 29 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sun Aug 03 2025 46F 46F / 34% WNW 19 G 27 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Sun Aug 03 2025 46F 45F / 31% WNW 20 G 25 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Sun Aug 03 2025 47F 45F / 34% WNW 18 G 23 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Sun Aug 03 2025 47F 46F / 30% WNW 17 G 24 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Sun Aug 03 2025 46F 45F / 23% W 17 G 23 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Sun Aug 03 2025 46F 45F / 27% W 18 G 23 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Sun Aug 03 2025 46F 45F / 28% W 17 G 23 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Sun Aug 03 2025 49F 47F / 26% W 15 G 22 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Sun Aug 03 2025 52F 47F / 21% W 11 G 17 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Sun Aug 03 2025 58F 49F / 24% W 9 G 17 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Sun Aug 03 2025 61F 51F / 26% WNW 9 G 15 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Sun Aug 03 2025 62F 52F / 23% W 7 G 13 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Sun Aug 03 2025 65F 54F / 20% W 6 G 13 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Sun Aug 03 2025 65F 55F / 22% W 7 G 15 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Sun Aug 03 2025 65F 55F / 25% WSW 7 G 16 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Sun Aug 03 2025 65F 56F / 19% SW 9 G 17 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Sun Aug 03 2025 62F 55F / 20% SW 9 G 17 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Sun Aug 03 2025 59F 54F / 24% WSW 9 G 14 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Sun Aug 03 2025 56F 52F / 29% SW 11 G 16 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Sun Aug 03 2025 54F 51F / 29% SW 14 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Sun Aug 03 2025 52F 51F / 25% SSW 16 G 25 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Sun Aug 03 2025 52F 51F / 22% SSW 18 G 26 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Mon Aug 04 2025 53F 52F / 20% SSW 19 G 30 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Mon Aug 04 2025 54F 54F / 16% SSW 23 G 38 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Mon Aug 04 2025 53F 53F / 19% SSW 21 G 35 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Mon Aug 04 2025 52F 52F / 14% SSW 21 G 34 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Mon Aug 04 2025 51F 52F / 12% SW 21 G 35 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Mon Aug 04 2025 50F 51F / 8% SW 19 G 34 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Mon Aug 04 2025 49F 50F / 11% SSW 19 G 33 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Mon Aug 04 2025 50F 50F / 9% SSW 19 G 31 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Mon Aug 04 2025 51F 51F / 7% SSW 19 G 33 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Mon Aug 04 2025 52F 52F / 13% SW 18 G 34 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Mon Aug 04 2025 55F 51F / 4% SSW 18 G 34 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Mon Aug 04 2025 60F 52F / 3% SSW 18 G 32 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Mon Aug 04 2025 64F 54F / 5% SSW 15 G 31 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"