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 27-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 Tue Aug 26 2025 50F 45F / 89% S 11 G 25 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Tue Aug 26 2025 49F 44F / 100% SSW 13 G 26 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Tue Aug 26 2025 46F 43F / 100% SSW 15 G 28 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Tue Aug 26 2025 47F 43F / 100% S 15 G 29 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Tue Aug 26 2025 46F 44F / 100% SSW 14 G 26 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Tue Aug 26 2025 46F 43F / 100% S 14 G 27 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Wed Aug 27 2025 46F 42F / 100% S 15 G 29 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Wed Aug 27 2025 46F 42F / 100% S 15 G 29 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Wed Aug 27 2025 47F 42F / 100% SSW 16 G 30 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Wed Aug 27 2025 47F 43F / 100% SSW 16 G 29 MPH 14000 FT 0:1 / -% 0.02" / 0.0" 0.02" / 0.0" 10 04 AM Wed Aug 27 2025 46F 42F / 100% SW 15 G 27 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 11 05 AM Wed Aug 27 2025 46F 41F / 100% SW 15 G 24 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 12 06 AM Wed Aug 27 2025 45F 42F / 100% SW 16 G 27 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 13 07 AM Wed Aug 27 2025 46F 42F / 100% SW 14 G 25 MPH 13700 FT 0:1 / -% 0.01" / 0.0" 0.03" / 0.0" 14 08 AM Wed Aug 27 2025 46F 41F / 100% WSW 15 G 26 MPH 13400 FT 0:1 / -% 0.03" / 0.0" 0.06" / 0.0" 15 09 AM Wed Aug 27 2025 46F 41F / 100% W 15 G 28 MPH 13500 FT 0:1 / -% 0.03" / 0.0" 0.09" / 0.0" 16 10 AM Wed Aug 27 2025 45F 41F / 100% W 14 G 26 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 17 11 AM Wed Aug 27 2025 48F 41F / 100% W 16 G 27 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 18 12 PM Wed Aug 27 2025 50F 42F / 100% WNW 15 G 24 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 19 01 PM Wed Aug 27 2025 50F 43F / 93% W 11 G 22 MPH 13500 FT 0:1 / -% 0.01" / 0.0" 0.10" / 0.0" 20 02 PM Wed Aug 27 2025 49F 42F / 100% W 17 G 27 MPH 13400 FT 0:1 / -% 0.28" / 0.0" 0.38" / 0.0" 21 03 PM Wed Aug 27 2025 50F 43F / 97% W 13 G 25 MPH 13400 FT 0:1 / -% 0.02" / 0.0" 0.40" / 0.0" 22 04 PM Wed Aug 27 2025 49F 43F / 84% WSW 18 G 31 MPH 13300 FT 0:1 / -% 0.02" / 0.0" 0.42" / 0.0" 23 05 PM Wed Aug 27 2025 51F 45F / 85% WSW 15 G 24 MPH 13400 FT 0:1 / -% 0.03" / 0.0" 0.45" / 0.0" 24 06 PM Wed Aug 27 2025 49F 45F / 95% WSW 12 G 22 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.45" / 0.0" 25 07 PM Wed Aug 27 2025 49F 43F / 100% WSW 14 G 23 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.45" / 0.0" 26 08 PM Wed Aug 27 2025 45F 41F / 94% WSW 15 G 24 MPH 13100 FT 0:1 / -% 0.02" / 0.0" 0.47" / 0.0" 27 09 PM Wed Aug 27 2025 45F 42F / 85% WSW 20 G 34 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 28 10 PM Wed Aug 27 2025 44F 41F / 79% WSW 14 G 24 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 29 11 PM Wed Aug 27 2025 44F 41F / 79% WSW 13 G 23 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 30 12 AM Thu Aug 28 2025 43F 41F / 74% SW 13 G 16 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 31 01 AM Thu Aug 28 2025 43F 41F / 86% SW 13 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 32 02 AM Thu Aug 28 2025 43F 40F / 80% WSW 14 G 21 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 33 03 AM Thu Aug 28 2025 42F 39F / 92% WSW 15 G 22 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 34 04 AM Thu Aug 28 2025 42F 38F / 100% W 13 G 23 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 35 05 AM Thu Aug 28 2025 42F 38F / 100% WSW 14 G 23 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 36 06 AM Thu Aug 28 2025 41F 38F / 99% WSW 13 G 22 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 37 07 AM Thu Aug 28 2025 41F 38F / 91% WSW 14 G 21 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 38 08 AM Thu Aug 28 2025 42F 40F / 92% W 13 G 21 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 39 09 AM Thu Aug 28 2025 42F 40F / 100% W 10 G 18 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 40 10 AM Thu Aug 28 2025 44F 41F / 100% W 10 G 16 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 41 11 AM Thu Aug 28 2025 47F 43F / 100% W 10 G 16 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 42 12 PM Thu Aug 28 2025 48F 43F / 100% W 9 G 17 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 43 01 PM Thu Aug 28 2025 51F 45F / 93% W 8 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 44 02 PM Thu Aug 28 2025 51F 44F / 92% W 9 G 18 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 45 03 PM Thu Aug 28 2025 52F 46F / 98% W 12 G 20 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 46 04 PM Thu Aug 28 2025 51F 45F / 99% W 10 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 47 05 PM Thu Aug 28 2025 50F 44F / 100% WNW 10 G 18 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0" 48 06 PM Thu Aug 28 2025 49F 44F / 100% W 12 G 19 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.47" / 0.0"