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 28-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 Wed Aug 27 2025 51F 46F / 75% SW 10 G 19 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Wed Aug 27 2025 50F 45F / 84% WSW 12 G 20 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Wed Aug 27 2025 46F 43F / 96% W 14 G 23 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Wed Aug 27 2025 46F 43F / 87% W 16 G 26 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Wed Aug 27 2025 46F 42F / 100% W 16 G 27 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Wed Aug 27 2025 45F 42F / 100% W 14 G 23 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Thu Aug 28 2025 44F 42F / 97% WSW 12 G 20 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Thu Aug 28 2025 44F 41F / 100% WSW 11 G 18 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Thu Aug 28 2025 45F 41F / 100% WSW 11 G 18 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Thu Aug 28 2025 45F 41F / 91% WSW 16 G 25 MPH 13000 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 10 04 AM Thu Aug 28 2025 45F 41F / 100% WSW 13 G 22 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 11 05 AM Thu Aug 28 2025 43F 39F / 100% W 13 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 12 06 AM Thu Aug 28 2025 42F 39F / 100% W 14 G 21 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 13 07 AM Thu Aug 28 2025 42F 39F / 100% W 15 G 23 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 14 08 AM Thu Aug 28 2025 43F 39F / 100% WNW 13 G 21 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 15 09 AM Thu Aug 28 2025 44F 40F / 99% WNW 13 G 22 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 16 10 AM Thu Aug 28 2025 45F 40F / 100% WNW 11 G 17 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 17 11 AM Thu Aug 28 2025 49F 41F / 99% W 10 G 16 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 18 12 PM Thu Aug 28 2025 50F 43F / 91% WNW 11 G 16 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 19 01 PM Thu Aug 28 2025 52F 44F / 81% WNW 10 G 19 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 20 02 PM Thu Aug 28 2025 53F 45F / 85% W 10 G 18 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 21 03 PM Thu Aug 28 2025 53F 44F / 81% W 10 G 20 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 22 04 PM Thu Aug 28 2025 54F 46F / 77% W 10 G 18 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 23 05 PM Thu Aug 28 2025 54F 46F / 81% W 12 G 21 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 24 06 PM Thu Aug 28 2025 51F 46F / 77% W 11 G 20 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 25 07 PM Thu Aug 28 2025 49F 44F / 75% W 11 G 18 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 26 08 PM Thu Aug 28 2025 46F 42F / 76% W 13 G 19 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 27 09 PM Thu Aug 28 2025 44F 42F / 72% W 14 G 20 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 28 10 PM Thu Aug 28 2025 44F 42F / 58% W 13 G 19 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 29 11 PM Thu Aug 28 2025 43F 41F / 54% WNW 13 G 19 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 30 12 AM Fri Aug 29 2025 43F 41F / 56% WNW 14 G 19 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 31 01 AM Fri Aug 29 2025 41F 40F / 68% WNW 13 G 20 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 32 02 AM Fri Aug 29 2025 41F 40F / 70% NW 12 G 19 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 33 03 AM Fri Aug 29 2025 41F 39F / 73% NW 16 G 21 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 34 04 AM Fri Aug 29 2025 41F 39F / 75% NW 15 G 21 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 35 05 AM Fri Aug 29 2025 41F 39F / 70% NE 13 G 20 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 36 06 AM Fri Aug 29 2025 41F 39F / 54% WNW 13 G 18 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 37 07 AM Fri Aug 29 2025 40F 40F / 49% WNW 14 G 16 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 38 08 AM Fri Aug 29 2025 41F 41F / 44% WSW 11 G 16 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 39 09 AM Fri Aug 29 2025 43F 43F / 41% WNW 9 G 13 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 40 10 AM Fri Aug 29 2025 47F 43F / 49% WNW 8 G 11 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 41 11 AM Fri Aug 29 2025 51F 45F / 44% W 8 G 11 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 42 12 PM Fri Aug 29 2025 54F 47F / 49% WNW 7 G 14 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 43 01 PM Fri Aug 29 2025 55F 48F / 40% WNW 9 G 18 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 44 02 PM Fri Aug 29 2025 56F 48F / 45% WNW 10 G 18 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 45 03 PM Fri Aug 29 2025 56F 49F / 51% WNW 10 G 19 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 46 04 PM Fri Aug 29 2025 55F 48F / 66% WNW 11 G 20 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 47 05 PM Fri Aug 29 2025 55F 48F / 58% WNW 11 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 48 06 PM Fri Aug 29 2025 51F 45F / 72% WNW 14 G 21 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0"