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 01-Oct-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 Sep 30 2025 41F 36F / 71% WSW 20 G 34 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Tue Sep 30 2025 39F 35F / 75% WSW 17 G 31 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Tue Sep 30 2025 38F 35F / 81% WSW 17 G 29 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Tue Sep 30 2025 38F 34F / 83% WSW 18 G 29 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Tue Sep 30 2025 38F 35F / 89% WSW 18 G 30 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Tue Sep 30 2025 38F 35F / 93% WSW 18 G 30 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Wed Oct 01 2025 38F 36F / 87% SW 19 G 32 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Wed Oct 01 2025 39F 36F / 90% WSW 21 G 36 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Wed Oct 01 2025 40F 36F / 100% SW 18 G 34 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Wed Oct 01 2025 40F 36F / 100% SW 20 G 36 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Wed Oct 01 2025 39F 36F / 94% SW 20 G 37 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Wed Oct 01 2025 39F 35F / 93% SW 20 G 33 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Wed Oct 01 2025 38F 35F / 85% SW 19 G 32 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Wed Oct 01 2025 38F 35F / 79% SW 18 G 31 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Wed Oct 01 2025 38F 36F / 77% SW 16 G 27 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Wed Oct 01 2025 39F 36F / 79% SW 15 G 25 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Wed Oct 01 2025 41F 37F / 71% SSW 13 G 24 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Wed Oct 01 2025 44F 38F / 66% SSW 13 G 24 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Wed Oct 01 2025 46F 39F / 61% S 13 G 24 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Wed Oct 01 2025 48F 40F / 53% S 11 G 23 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Wed Oct 01 2025 50F 41F / 54% SSW 11 G 23 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Wed Oct 01 2025 51F 42F / 49% S 11 G 24 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Wed Oct 01 2025 51F 43F / 46% SSW 12 G 24 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Wed Oct 01 2025 50F 43F / 47% SSW 12 G 26 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Wed Oct 01 2025 48F 42F / 49% SSW 13 G 26 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Wed Oct 01 2025 44F 41F / 51% SSW 14 G 27 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 PM Wed Oct 01 2025 42F 40F / 50% SSW 17 G 31 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 PM Wed Oct 01 2025 42F 40F / 48% SSW 19 G 34 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 PM Wed Oct 01 2025 43F 41F / 43% S 19 G 33 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 PM Wed Oct 01 2025 42F 40F / 47% S 18 G 31 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 AM Thu Oct 02 2025 42F 40F / 50% SSW 20 G 34 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 AM Thu Oct 02 2025 42F 40F / 49% SSW 21 G 37 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 AM Thu Oct 02 2025 42F 40F / 50% S 23 G 39 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 AM Thu Oct 02 2025 42F 39F / 50% S 23 G 39 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 AM Thu Oct 02 2025 42F 40F / 54% S 23 G 40 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 AM Thu Oct 02 2025 42F 39F / 56% S 24 G 44 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 AM Thu Oct 02 2025 41F 39F / 54% S 24 G 43 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 AM Thu Oct 02 2025 42F 41F / 55% SSW 24 G 42 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 AM Thu Oct 02 2025 42F 41F / 53% SSW 22 G 40 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 AM Thu Oct 02 2025 43F 42F / 51% S 21 G 40 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 AM Thu Oct 02 2025 45F 42F / 47% SSW 22 G 41 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 AM Thu Oct 02 2025 49F 44F / 51% S 20 G 39 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 PM Thu Oct 02 2025 51F 45F / 49% S 19 G 36 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 PM Thu Oct 02 2025 53F 46F / 44% S 17 G 36 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 PM Thu Oct 02 2025 54F 46F / 40% S 14 G 35 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 PM Thu Oct 02 2025 54F 48F / 35% S 15 G 35 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 PM Thu Oct 02 2025 53F 47F / 36% S 13 G 30 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 PM Thu Oct 02 2025 54F 47F / 29% SSW 14 G 31 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 PM Thu Oct 02 2025 53F 48F / 32% SSW 14 G 29 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"