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 11-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 11 2025 60F 51F / 47% SSW 11 G 21 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Wed Jun 11 2025 61F 52F / 40% SSW 14 G 27 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Wed Jun 11 2025 64F 53F / 29% SSW 12 G 26 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Wed Jun 11 2025 65F 55F / 25% SW 13 G 26 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Wed Jun 11 2025 65F 55F / 20% SW 18 G 34 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Wed Jun 11 2025 63F 55F / 17% SW 16 G 27 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Wed Jun 11 2025 61F 55F / 23% SW 17 G 30 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Wed Jun 11 2025 61F 56F / 12% SW 21 G 37 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Wed Jun 11 2025 57F 54F / 20% SW 21 G 35 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Wed Jun 11 2025 53F 51F / 33% W 14 G 22 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Wed Jun 11 2025 52F 50F / 38% W 12 G 17 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Wed Jun 11 2025 52F 51F / 34% SSW 12 G 18 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Thu Jun 12 2025 51F 50F / 34% SSW 15 G 23 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Thu Jun 12 2025 46F 47F / 53% SSE 14 G 25 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Thu Jun 12 2025 47F 47F / 59% S 17 G 26 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Thu Jun 12 2025 48F 47F / 45% SSW 17 G 24 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Thu Jun 12 2025 48F 46F / 52% SW 17 G 25 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Thu Jun 12 2025 47F 47F / 50% SW 17 G 25 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Thu Jun 12 2025 46F 46F / 40% SW 16 G 24 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Thu Jun 12 2025 46F 46F / 44% SW 15 G 22 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Thu Jun 12 2025 47F 47F / 42% SW 17 G 25 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Thu Jun 12 2025 49F 47F / 46% SW 15 G 24 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Thu Jun 12 2025 52F 48F / 41% SW 13 G 23 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Thu Jun 12 2025 57F 49F / 30% SSW 12 G 25 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Thu Jun 12 2025 60F 51F / 28% SSW 13 G 25 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Thu Jun 12 2025 62F 52F / 22% SSW 14 G 27 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Thu Jun 12 2025 64F 53F / 20% SW 13 G 27 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Thu Jun 12 2025 64F 54F / 20% SW 14 G 29 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Thu Jun 12 2025 65F 54F / 14% SW 14 G 28 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Thu Jun 12 2025 65F 55F / 13% SW 12 G 24 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Thu Jun 12 2025 62F 55F / 14% SW 13 G 24 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Thu Jun 12 2025 60F 54F / 15% SW 15 G 27 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Thu Jun 12 2025 57F 52F / 12% SW 15 G 27 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Thu Jun 12 2025 54F 51F / 20% SW 15 G 25 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Thu Jun 12 2025 52F 49F / 28% WSW 12 G 20 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Thu Jun 12 2025 50F 49F / 37% WSW 12 G 16 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Fri Jun 13 2025 50F 48F / 36% SSW 11 G 17 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Fri Jun 13 2025 50F 50F / 38% SW 14 G 18 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Fri Jun 13 2025 50F 49F / 38% W 15 G 23 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Fri Jun 13 2025 49F 48F / 43% W 16 G 26 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Fri Jun 13 2025 50F 48F / 47% WSW 14 G 22 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Fri Jun 13 2025 48F 47F / 39% WSW 15 G 23 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Fri Jun 13 2025 48F 47F / 33% WSW 15 G 22 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Fri Jun 13 2025 47F 47F / 31% WSW 16 G 22 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Fri Jun 13 2025 48F 47F / 41% WSW 14 G 24 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Fri Jun 13 2025 49F 48F / 41% SW 17 G 28 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Fri Jun 13 2025 51F 48F / 37% SSW 16 G 28 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Fri Jun 13 2025 57F 49F / 29% SW 15 G 26 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Fri Jun 13 2025 62F 51F / 21% SSW 14 G 29 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"