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 30-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 Fri Aug 29 2025 53F 46F / 79% WNW 12 G 21 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Fri Aug 29 2025 49F 45F / 70% WNW 15 G 23 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Fri Aug 29 2025 45F 42F / 74% WNW 14 G 21 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Fri Aug 29 2025 43F 41F / 65% WNW 14 G 20 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Fri Aug 29 2025 43F 41F / 44% WNW 15 G 21 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Fri Aug 29 2025 43F 41F / 61% NW 13 G 21 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Sat Aug 30 2025 43F 41F / 79% NW 15 G 23 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Sat Aug 30 2025 42F 40F / 75% NW 16 G 23 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Sat Aug 30 2025 43F 40F / 77% NW 15 G 23 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Sat Aug 30 2025 42F 40F / 75% W 15 G 23 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Sat Aug 30 2025 42F 40F / 67% NW 14 G 22 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Sat Aug 30 2025 41F 39F / 74% NNW 16 G 22 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Sat Aug 30 2025 41F 39F / 66% N 13 G 21 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Sat Aug 30 2025 41F 39F / 70% NNW 14 G 22 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Sat Aug 30 2025 41F 39F / 74% NNW 14 G 22 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Sat Aug 30 2025 43F 40F / 71% NNW 15 G 22 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Sat Aug 30 2025 46F 41F / 61% NNW 12 G 20 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Sat Aug 30 2025 51F 43F / 54% NNW 10 G 17 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Sat Aug 30 2025 54F 45F / 47% NNW 9 G 14 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Sat Aug 30 2025 56F 47F / 37% NW 7 G 13 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Sat Aug 30 2025 58F 49F / 35% NW 6 G 12 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Sat Aug 30 2025 59F 49F / 39% NW 7 G 14 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Sat Aug 30 2025 58F 49F / 52% WNW 10 G 17 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Sat Aug 30 2025 58F 49F / 54% WNW 11 G 21 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Sat Aug 30 2025 54F 49F / 52% NW 12 G 20 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Sat Aug 30 2025 52F 48F / 52% WNW 12 G 19 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 PM Sat Aug 30 2025 48F 44F / 55% WNW 13 G 20 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 PM Sat Aug 30 2025 45F 44F / 48% NW 13 G 19 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 PM Sat Aug 30 2025 45F 44F / 32% NNW 14 G 21 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 PM Sat Aug 30 2025 44F 43F / 36% N 16 G 25 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 AM Sun Aug 31 2025 43F 43F / 47% NNE 15 G 25 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 AM Sun Aug 31 2025 42F 43F / 50% N 12 G 22 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 AM Sun Aug 31 2025 41F 42F / 42% NNE 11 G 18 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 AM Sun Aug 31 2025 42F 42F / 41% E 13 G 18 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 AM Sun Aug 31 2025 43F 42F / 37% ESE 12 G 19 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 AM Sun Aug 31 2025 43F 43F / 39% WSW 12 G 17 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 AM Sun Aug 31 2025 43F 43F / 39% WSW 12 G 15 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 AM Sun Aug 31 2025 44F 45F / 34% SSW 11 G 16 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 AM Sun Aug 31 2025 44F 45F / 36% SSW 11 G 16 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 AM Sun Aug 31 2025 47F 47F / 50% SSE 10 G 17 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 AM Sun Aug 31 2025 51F 48F / 41% SSW 10 G 16 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 AM Sun Aug 31 2025 56F 49F / 40% SSW 8 G 15 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 PM Sun Aug 31 2025 59F 52F / 28% W 7 G 13 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 PM Sun Aug 31 2025 61F 54F / 12% WNW 6 G 15 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 PM Sun Aug 31 2025 63F 54F / 26% WNW 6 G 12 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 PM Sun Aug 31 2025 64F 55F / 35% NW 8 G 13 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 PM Sun Aug 31 2025 62F 55F / 25% WNW 7 G 15 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 PM Sun Aug 31 2025 63F 55F / 41% WNW 7 G 11 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 PM Sun Aug 31 2025 60F 55F / 25% W 9 G 15 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"