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 19-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 Thu Jun 19 2025 65F 54F / 11% SSW 13 G 29 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Thu Jun 19 2025 66F 55F / 8% SSW 16 G 34 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Thu Jun 19 2025 68F 56F / 6% SSW 15 G 33 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Thu Jun 19 2025 69F 58F / 7% S 13 G 30 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Thu Jun 19 2025 69F 59F / 7% SW 16 G 33 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Thu Jun 19 2025 69F 60F / 0% SSW 15 G 29 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Thu Jun 19 2025 66F 60F / 1% SW 16 G 30 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Thu Jun 19 2025 64F 59F / 2% SSW 17 G 33 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Thu Jun 19 2025 60F 56F / 8% SSW 19 G 38 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Thu Jun 19 2025 57F 53F / 7% SW 24 G 47 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Thu Jun 19 2025 55F 53F / 4% SW 24 G 47 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Thu Jun 19 2025 54F 51F / 5% SW 26 G 48 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Fri Jun 20 2025 53F 50F / 9% SSW 26 G 52 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Fri Jun 20 2025 52F 49F / 17% SSW 28 G 55 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Fri Jun 20 2025 50F 48F / 22% SSW 29 G 53 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Fri Jun 20 2025 49F 46F / 24% SSW 31 G 55 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Fri Jun 20 2025 48F 45F / 21% SW 31 G 57 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Fri Jun 20 2025 47F 46F / 25% SW 29 G 49 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Fri Jun 20 2025 46F 45F / 28% SW 26 G 45 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Fri Jun 20 2025 47F 45F / 30% SW 24 G 40 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Fri Jun 20 2025 48F 45F / 33% SW 22 G 36 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Fri Jun 20 2025 49F 45F / 31% SW 20 G 35 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Fri Jun 20 2025 51F 44F / 31% SSW 18 G 36 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Fri Jun 20 2025 55F 45F / 32% SSW 18 G 39 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Fri Jun 20 2025 59F 48F / 30% SSW 20 G 41 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Fri Jun 20 2025 60F 49F / 30% SSW 19 G 41 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Fri Jun 20 2025 62F 49F / 27% SSW 19 G 42 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Fri Jun 20 2025 61F 50F / 24% SSW 21 G 47 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Fri Jun 20 2025 63F 50F / 21% SSW 22 G 45 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Fri Jun 20 2025 63F 52F / 18% SSW 22 G 45 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Fri Jun 20 2025 61F 52F / 20% SSW 23 G 44 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Fri Jun 20 2025 58F 51F / 20% SSW 24 G 48 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Fri Jun 20 2025 55F 50F / 18% SSW 25 G 52 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Fri Jun 20 2025 53F 49F / 22% SW 29 G 55 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Fri Jun 20 2025 51F 47F / 19% SW 29 G 54 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Fri Jun 20 2025 47F 44F / 25% WSW 24 G 39 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Sat Jun 21 2025 46F 43F / 44% SW 23 G 40 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Sat Jun 21 2025 45F 43F / 48% SW 26 G 46 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Sat Jun 21 2025 44F 42F / 42% SSW 26 G 46 MPH 10200 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Sat Jun 21 2025 43F 41F / 49% SW 24 G 44 MPH 9900 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Sat Jun 21 2025 43F 40F / 43% SW 24 G 43 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Sat Jun 21 2025 42F 40F / 49% SSW 20 G 42 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Sat Jun 21 2025 42F 40F / 49% SSW 20 G 38 MPH 9000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Sat Jun 21 2025 43F 41F / 47% SSW 24 G 41 MPH 8800 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Sat Jun 21 2025 46F 43F / 42% SSW 22 G 42 MPH 9400 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Sat Jun 21 2025 46F 43F / 46% SSW 23 G 44 MPH 9400 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Sat Jun 21 2025 47F 42F / 40% SSW 21 G 41 MPH 9400 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Sat Jun 21 2025 51F 43F / 42% SSW 17 G 34 MPH 9700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Sat Jun 21 2025 54F 44F / 31% SSW 16 G 35 MPH 9800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0"