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 06Z 26-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 12 AM Tue Aug 26 2025 50F 47F / 93% SSE 13 G 22 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Tue Aug 26 2025 49F 47F / 79% SSE 13 G 25 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Tue Aug 26 2025 49F 46F / 83% SE 13 G 25 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Tue Aug 26 2025 49F 47F / 75% SSE 10 G 18 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Tue Aug 26 2025 49F 47F / 67% SSE 12 G 23 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Tue Aug 26 2025 50F 46F / 76% S 15 G 29 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Tue Aug 26 2025 49F 45F / 67% SSW 11 G 19 MPH 14900 FT 0:1 / -% 0.03" / 0.0" 0.03" / 0.0" 7 07 AM Tue Aug 26 2025 48F 46F / 83% SSW 9 G 20 MPH 14200 FT 0:1 / -% 0.02" / 0.0" 0.05" / 0.0" 8 08 AM Tue Aug 26 2025 47F 45F / 81% WSW 9 G 19 MPH 14200 FT 0:1 / -% 0.03" / 0.0" 0.08" / 0.0" 9 09 AM Tue Aug 26 2025 47F 44F / 100% SSE 8 G 17 MPH 14400 FT 0:1 / -% 0.04" / 0.0" 0.12" / 0.0" 10 10 AM Tue Aug 26 2025 48F 44F / 95% SSE 10 G 24 MPH 14300 FT 0:1 / -% 0.04" / 0.0" 0.16" / 0.0" 11 11 AM Tue Aug 26 2025 50F 45F / 85% SSW 14 G 27 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.16" / 0.0" 12 12 PM Tue Aug 26 2025 52F 46F / 83% S 13 G 23 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.16" / 0.0" 13 01 PM Tue Aug 26 2025 53F 46F / 83% SW 9 G 18 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.16" / 0.0" 14 02 PM Tue Aug 26 2025 52F 46F / 78% W 7 G 16 MPH 14400 FT 0:1 / -% 0.03" / 0.0" 0.19" / 0.0" 15 03 PM Tue Aug 26 2025 50F 45F / 100% SE 10 G 18 MPH 14600 FT 0:1 / -% 0.04" / 0.0" 0.23" / 0.0" 16 04 PM Tue Aug 26 2025 48F 45F / 82% W 7 G 13 MPH 14600 FT 0:1 / -% 0.13" / 0.0" 0.36" / 0.0" 17 05 PM Tue Aug 26 2025 47F 45F / 90% SW 6 G 14 MPH 14700 FT 0:1 / -% 0.09" / 0.0" 0.45" / 0.0" 18 06 PM Tue Aug 26 2025 48F 44F / 100% SSW 12 G 25 MPH 14600 FT 0:1 / -% 0.02" / 0.0" 0.47" / 0.0" 19 07 PM Tue Aug 26 2025 49F 45F / 92% SSW 14 G 27 MPH 14600 FT 0:1 / -% 0.01" / 0.0" 0.48" / 0.0" 20 08 PM Tue Aug 26 2025 47F 43F / 100% SSW 14 G 26 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 21 09 PM Tue Aug 26 2025 47F 44F / 100% SSW 15 G 28 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 22 10 PM Tue Aug 26 2025 46F 43F / 100% SSW 14 G 27 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 23 11 PM Tue Aug 26 2025 46F 43F / 96% S 14 G 27 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 24 12 AM Wed Aug 27 2025 45F 41F / 100% S 15 G 28 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 25 01 AM Wed Aug 27 2025 45F 42F / 100% S 18 G 32 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 26 02 AM Wed Aug 27 2025 46F 42F / 100% S 16 G 28 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 27 03 AM Wed Aug 27 2025 46F 42F / 100% S 16 G 29 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.48" / 0.0" 28 04 AM Wed Aug 27 2025 46F 41F / 100% SSW 17 G 30 MPH 14100 FT 0:1 / -% 0.09" / 0.0" 0.57" / 0.0" 29 05 AM Wed Aug 27 2025 45F 41F / 100% SW 16 G 28 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.57" / 0.0" 30 06 AM Wed Aug 27 2025 45F 40F / 100% SW 16 G 28 MPH 13900 FT 0:1 / -% 0.06" / 0.0" 0.63" / 0.0" 31 07 AM Wed Aug 27 2025 44F 40F / 100% SW 16 G 29 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.63" / 0.0" 32 08 AM Wed Aug 27 2025 45F 40F / 100% WSW 17 G 27 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.63" / 0.0" 33 09 AM Wed Aug 27 2025 45F 41F / 100% WSW 16 G 26 MPH 13700 FT 0:1 / -% 0.01" / 0.0" 0.64" / 0.0" 34 10 AM Wed Aug 27 2025 44F 39F / 100% W 15 G 26 MPH 13900 FT 0:1 / -% 0.20" / 0.0" 0.84" / 0.0" 35 11 AM Wed Aug 27 2025 46F 41F / 100% WSW 13 G 25 MPH 13900 FT 0:1 / -% 0.01" / 0.0" 0.85" / 0.0" 36 12 PM Wed Aug 27 2025 49F 43F / 100% W 12 G 20 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.85" / 0.0" 37 01 PM Wed Aug 27 2025 47F 43F / 99% WSW 13 G 24 MPH 13600 FT 0:1 / -% 0.44" / 0.0" 1.29" / 0.0" 38 02 PM Wed Aug 27 2025 45F 41F / 93% WSW 14 G 29 MPH 13600 FT 0:1 / -% 0.09" / 0.0" 1.38" / 0.0" 39 03 PM Wed Aug 27 2025 49F 44F / 86% W 14 G 25 MPH 13500 FT 0:1 / -% 0.10" / 0.0" 1.48" / 0.0" 40 04 PM Wed Aug 27 2025 48F 44F / 95% WSW 11 G 22 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 1.48" / 0.0" 41 05 PM Wed Aug 27 2025 49F 44F / 100% W 11 G 20 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 1.48" / 0.0" 42 06 PM Wed Aug 27 2025 48F 44F / 100% WSW 11 G 19 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 1.48" / 0.0" 43 07 PM Wed Aug 27 2025 47F 43F / 100% W 13 G 21 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 1.48" / 0.0" 44 08 PM Wed Aug 27 2025 44F 42F / 100% W 13 G 18 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 1.48" / 0.0" 45 09 PM Wed Aug 27 2025 43F 41F / 100% W 14 G 25 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 1.48" / 0.0" 46 10 PM Wed Aug 27 2025 43F 40F / 100% WNW 12 G 21 MPH 13600 FT 0:1 / -% 0.18" / 0.0" 1.66" / 0.0" 47 11 PM Wed Aug 27 2025 42F 41F / 100% WSW 11 G 16 MPH 13400 FT 0:1 / -% 0.07" / 0.0" 1.73" / 0.0" 48 12 AM Thu Aug 28 2025 42F 39F / 100% W 13 G 22 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 1.73" / 0.0"