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 12Z 25-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 AM Mon Aug 25 2025 47F 44F / 91% WSW 12 G 19 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Mon Aug 25 2025 47F 44F / 79% WSW 11 G 17 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Mon Aug 25 2025 48F 45F / 69% SW 11 G 18 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Mon Aug 25 2025 48F 46F / 69% SW 11 G 17 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Mon Aug 25 2025 51F 46F / 55% SW 11 G 17 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Mon Aug 25 2025 55F 47F / 71% SW 12 G 21 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Mon Aug 25 2025 58F 50F / 61% WSW 9 G 17 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Mon Aug 25 2025 59F 51F / 62% W 9 G 18 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Mon Aug 25 2025 61F 52F / 52% WSW 9 G 19 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Mon Aug 25 2025 62F 52F / 52% W 8 G 16 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Mon Aug 25 2025 59F 52F / 54% W 9 G 17 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Mon Aug 25 2025 59F 52F / 66% WSW 7 G 12 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Mon Aug 25 2025 59F 52F / 56% W 6 G 12 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Mon Aug 25 2025 57F 51F / 61% W 9 G 14 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Mon Aug 25 2025 52F 48F / 73% W 11 G 18 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Mon Aug 25 2025 50F 48F / 62% WSW 12 G 20 MPH 14300 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 16 10 PM Mon Aug 25 2025 50F 48F / 66% SSE 9 G 17 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 17 11 PM Mon Aug 25 2025 50F 47F / 67% S 10 G 18 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 18 12 AM Tue Aug 26 2025 50F 47F / 82% SSW 13 G 21 MPH 14900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 19 01 AM Tue Aug 26 2025 49F 46F / 86% S 11 G 21 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 20 02 AM Tue Aug 26 2025 49F 45F / 91% SSW 13 G 22 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 21 03 AM Tue Aug 26 2025 48F 45F / 84% SSW 11 G 22 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 22 04 AM Tue Aug 26 2025 48F 45F / 80% SSW 11 G 20 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 23 05 AM Tue Aug 26 2025 48F 45F / 85% SW 11 G 19 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 24 06 AM Tue Aug 26 2025 48F 45F / 81% SW 13 G 20 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 25 07 AM Tue Aug 26 2025 48F 45F / 73% SW 12 G 20 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 26 08 AM Tue Aug 26 2025 49F 45F / 76% SW 12 G 19 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 27 09 AM Tue Aug 26 2025 48F 45F / 86% SSW 12 G 22 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 28 10 AM Tue Aug 26 2025 51F 46F / 81% SSW 12 G 21 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 29 11 AM Tue Aug 26 2025 54F 47F / 79% SSW 10 G 19 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 30 12 PM Tue Aug 26 2025 56F 49F / 79% SW 8 G 17 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 31 01 PM Tue Aug 26 2025 57F 49F / 76% SW 9 G 19 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 32 02 PM Tue Aug 26 2025 59F 49F / 60% SW 10 G 20 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 33 03 PM Tue Aug 26 2025 57F 49F / 70% SW 10 G 23 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 34 04 PM Tue Aug 26 2025 48F 45F / 100% S 10 G 23 MPH 15000 FT 0:1 / -% 0.04" / 0.0" 0.05" / 0.0" 35 05 PM Tue Aug 26 2025 51F 48F / 74% SSE 11 G 21 MPH 14500 FT 0:1 / -% 0.03" / 0.0" 0.08" / 0.0" 36 06 PM Tue Aug 26 2025 50F 46F / 86% S 10 G 22 MPH 14800 FT 0:1 / -% 0.01" / 0.0" 0.09" / 0.0" 37 07 PM Tue Aug 26 2025 51F 47F / 98% S 11 G 22 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 38 08 PM Tue Aug 26 2025 48F 46F / 100% S 10 G 20 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 39 09 PM Tue Aug 26 2025 46F 44F / 100% SW 11 G 19 MPH 14100 FT 0:1 / -% 0.01" / 0.0" 0.10" / 0.0" 40 10 PM Tue Aug 26 2025 46F 44F / 100% S 13 G 22 MPH 14200 FT 0:1 / -% 0.07" / 0.0" 0.17" / 0.0" 41 11 PM Tue Aug 26 2025 45F 43F / 88% S 12 G 24 MPH 14200 FT 0:1 / -% 0.08" / 0.0" 0.25" / 0.0" 42 12 AM Wed Aug 27 2025 45F 42F / 99% SSE 16 G 30 MPH 13600 FT 0:1 / -% 0.02" / 0.0" 0.27" / 0.0" 43 01 AM Wed Aug 27 2025 44F 42F / 100% SSE 16 G 33 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.27" / 0.0" 44 02 AM Wed Aug 27 2025 45F 41F / 100% SSE 19 G 34 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.27" / 0.0" 45 03 AM Wed Aug 27 2025 45F 41F / 100% SSE 16 G 29 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.27" / 0.0" 46 04 AM Wed Aug 27 2025 45F 41F / 100% SSE 15 G 28 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.27" / 0.0" 47 05 AM Wed Aug 27 2025 45F 42F / 100% SSE 14 G 27 MPH 13600 FT 0:1 / -% 0.04" / 0.0" 0.31" / 0.0" 48 06 AM Wed Aug 27 2025 45F 41F / 100% SSE 15 G 25 MPH 13900 FT 0:1 / -% 0.20" / 0.0" 0.51" / 0.0"