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 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 12 AM Wed Oct 01 2025 38F 35F / 76% WSW 17 G 28 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Wed Oct 01 2025 38F 35F / 71% WSW 18 G 29 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Wed Oct 01 2025 38F 35F / 76% WSW 18 G 29 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Wed Oct 01 2025 39F 36F / 85% SW 19 G 34 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Wed Oct 01 2025 39F 35F / 80% SW 18 G 32 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Wed Oct 01 2025 39F 35F / 85% SW 18 G 32 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Wed Oct 01 2025 38F 35F / 79% SW 17 G 29 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Wed Oct 01 2025 38F 35F / 87% SW 16 G 29 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Wed Oct 01 2025 38F 36F / 76% SW 16 G 28 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Wed Oct 01 2025 39F 36F / 78% SSW 15 G 26 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Wed Oct 01 2025 41F 36F / 72% SSW 14 G 26 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Wed Oct 01 2025 44F 38F / 66% SSW 14 G 27 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Wed Oct 01 2025 46F 39F / 58% S 14 G 27 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Wed Oct 01 2025 48F 40F / 48% S 13 G 24 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Wed Oct 01 2025 50F 41F / 50% S 11 G 25 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Wed Oct 01 2025 51F 42F / 43% S 11 G 25 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Wed Oct 01 2025 51F 43F / 37% S 12 G 24 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Wed Oct 01 2025 50F 43F / 43% SSW 11 G 23 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Wed Oct 01 2025 48F 42F / 45% SSW 12 G 25 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Wed Oct 01 2025 44F 41F / 44% SSW 15 G 27 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Wed Oct 01 2025 42F 40F / 47% S 16 G 30 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Wed Oct 01 2025 42F 41F / 43% S 19 G 34 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Wed Oct 01 2025 43F 41F / 44% S 19 G 32 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 PM Wed Oct 01 2025 42F 40F / 50% S 18 G 30 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 AM Thu Oct 02 2025 42F 40F / 50% S 19 G 34 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 AM Thu Oct 02 2025 42F 40F / 45% S 22 G 38 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 AM Thu Oct 02 2025 42F 40F / 47% S 21 G 38 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 AM Thu Oct 02 2025 42F 40F / 44% S 22 G 39 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 AM Thu Oct 02 2025 42F 39F / 48% S 22 G 40 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 AM Thu Oct 02 2025 42F 39F / 59% S 24 G 42 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 AM Thu Oct 02 2025 42F 40F / 60% S 24 G 42 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 AM Thu Oct 02 2025 42F 39F / 64% S 23 G 41 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 AM Thu Oct 02 2025 42F 40F / 60% S 22 G 39 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 AM Thu Oct 02 2025 43F 41F / 62% S 21 G 39 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 AM Thu Oct 02 2025 45F 41F / 58% S 20 G 40 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 AM Thu Oct 02 2025 48F 42F / 52% S 18 G 38 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 PM Thu Oct 02 2025 51F 43F / 49% S 16 G 35 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 PM Thu Oct 02 2025 54F 47F / 43% S 16 G 36 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 PM Thu Oct 02 2025 55F 47F / 37% SSE 15 G 34 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 PM Thu Oct 02 2025 55F 48F / 37% S 15 G 35 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 PM Thu Oct 02 2025 55F 48F / 34% S 14 G 33 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 PM Thu Oct 02 2025 56F 49F / 34% S 13 G 28 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 PM Thu Oct 02 2025 54F 49F / 30% S 13 G 29 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 PM Thu Oct 02 2025 50F 47F / 36% S 13 G 31 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 PM Thu Oct 02 2025 48F 45F / 39% S 14 G 31 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 PM Thu Oct 02 2025 47F 45F / 41% S 17 G 36 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 PM Thu Oct 02 2025 46F 44F / 42% S 18 G 35 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 PM Thu Oct 02 2025 45F 43F / 41% S 17 G 38 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 AM Fri Oct 03 2025 44F 42F / 36% S 19 G 40 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"