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 18-Jun-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 Wed Jun 18 2025 58F 49F / 33% WNW 6 G 9 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Wed Jun 18 2025 60F 50F / 29% W 8 G 13 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Wed Jun 18 2025 64F 52F / 21% W 7 G 13 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Wed Jun 18 2025 64F 54F / 23% W 9 G 16 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Wed Jun 18 2025 63F 54F / 25% W 9 G 17 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Wed Jun 18 2025 64F 55F / 19% WSW 9 G 17 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Wed Jun 18 2025 61F 55F / 18% W 10 G 16 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Wed Jun 18 2025 59F 54F / 24% WSW 9 G 14 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Wed Jun 18 2025 56F 53F / 26% WSW 10 G 14 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Wed Jun 18 2025 53F 51F / 31% SW 12 G 15 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Wed Jun 18 2025 53F 52F / 21% SW 15 G 20 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Wed Jun 18 2025 53F 52F / 15% SSW 16 G 23 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Thu Jun 19 2025 53F 53F / 15% SW 16 G 23 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Thu Jun 19 2025 53F 52F / 13% SW 17 G 29 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Thu Jun 19 2025 53F 52F / 18% SSW 18 G 29 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Thu Jun 19 2025 51F 51F / 19% S 19 G 30 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Thu Jun 19 2025 50F 50F / 18% SSW 20 G 34 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Thu Jun 19 2025 50F 50F / 18% SSW 24 G 40 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Thu Jun 19 2025 49F 50F / 18% SW 21 G 36 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Thu Jun 19 2025 49F 50F / 18% SW 22 G 36 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Thu Jun 19 2025 51F 51F / 20% SW 21 G 34 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Thu Jun 19 2025 53F 52F / 17% SSW 20 G 33 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Thu Jun 19 2025 56F 52F / 17% SSW 16 G 33 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Thu Jun 19 2025 61F 53F / 9% SSW 15 G 32 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Thu Jun 19 2025 65F 55F / 11% SSW 13 G 29 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Thu Jun 19 2025 67F 56F / 4% SSW 16 G 33 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Thu Jun 19 2025 69F 56F / 6% SSW 15 G 32 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Thu Jun 19 2025 69F 59F / 9% SSW 16 G 34 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Thu Jun 19 2025 69F 58F / 4% SW 15 G 31 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Thu Jun 19 2025 70F 60F / 4% SW 15 G 32 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Thu Jun 19 2025 66F 59F / 6% SW 16 G 31 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Thu Jun 19 2025 63F 58F / 8% SW 18 G 36 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Thu Jun 19 2025 58F 54F / 5% SSW 20 G 41 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Thu Jun 19 2025 55F 53F / 9% SW 23 G 44 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Thu Jun 19 2025 54F 51F / 4% SSW 24 G 47 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Thu Jun 19 2025 53F 51F / 13% SSW 26 G 49 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Fri Jun 20 2025 52F 50F / 12% SSW 26 G 49 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Fri Jun 20 2025 53F 51F / 18% SSW 28 G 53 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Fri Jun 20 2025 52F 50F / 22% SSW 28 G 51 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Fri Jun 20 2025 50F 48F / 21% SSW 30 G 54 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Fri Jun 20 2025 50F 48F / 24% SW 29 G 50 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Fri Jun 20 2025 48F 47F / 27% SW 24 G 44 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Fri Jun 20 2025 47F 46F / 32% SW 23 G 38 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Fri Jun 20 2025 48F 46F / 41% SW 20 G 32 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Fri Jun 20 2025 50F 47F / 32% SW 19 G 32 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Fri Jun 20 2025 50F 48F / 40% SW 18 G 32 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Fri Jun 20 2025 52F 47F / 33% SSW 17 G 35 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Fri Jun 20 2025 57F 47F / 30% SSW 18 G 38 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Fri Jun 20 2025 60F 49F / 25% SSW 18 G 41 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"