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 02-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 Thu Oct 02 2025 42F 39F / 62% S 17 G 30 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Thu Oct 02 2025 42F 39F / 59% S 18 G 33 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Thu Oct 02 2025 42F 39F / 59% S 20 G 37 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Thu Oct 02 2025 41F 39F / 57% S 21 G 40 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Thu Oct 02 2025 41F 39F / 53% S 22 G 40 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Thu Oct 02 2025 42F 39F / 52% S 23 G 41 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Thu Oct 02 2025 41F 39F / 51% S 22 G 40 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Thu Oct 02 2025 41F 39F / 53% S 22 G 41 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Thu Oct 02 2025 41F 39F / 53% S 22 G 42 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Thu Oct 02 2025 43F 40F / 58% S 23 G 41 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Thu Oct 02 2025 45F 41F / 54% S 19 G 39 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Thu Oct 02 2025 48F 42F / 49% S 19 G 37 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Thu Oct 02 2025 51F 44F / 40% S 17 G 35 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Thu Oct 02 2025 53F 45F / 35% S 16 G 35 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Thu Oct 02 2025 54F 45F / 35% S 14 G 32 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Thu Oct 02 2025 55F 46F / 32% S 14 G 32 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Thu Oct 02 2025 55F 47F / 27% S 13 G 31 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Thu Oct 02 2025 54F 47F / 24% S 11 G 26 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Thu Oct 02 2025 52F 47F / 28% S 11 G 25 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Thu Oct 02 2025 49F 45F / 30% S 12 G 25 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Thu Oct 02 2025 47F 44F / 36% S 13 G 27 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Thu Oct 02 2025 45F 43F / 38% S 15 G 30 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Thu Oct 02 2025 46F 43F / 40% S 16 G 31 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 PM Thu Oct 02 2025 45F 42F / 41% S 17 G 31 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 AM Fri Oct 03 2025 44F 41F / 45% S 17 G 35 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 AM Fri Oct 03 2025 43F 40F / 50% S 19 G 39 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 AM Fri Oct 03 2025 44F 40F / 56% S 20 G 42 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 AM Fri Oct 03 2025 44F 40F / 50% S 20 G 40 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 AM Fri Oct 03 2025 43F 39F / 53% S 21 G 43 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 AM Fri Oct 03 2025 43F 39F / 64% SSW 23 G 46 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 AM Fri Oct 03 2025 43F 39F / 71% S 24 G 46 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 AM Fri Oct 03 2025 42F 38F / 71% S 23 G 48 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 AM Fri Oct 03 2025 42F 38F / 72% S 22 G 42 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 AM Fri Oct 03 2025 44F 38F / 76% SSW 21 G 43 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 AM Fri Oct 03 2025 45F 39F / 79% S 20 G 44 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 AM Fri Oct 03 2025 47F 39F / 67% S 19 G 44 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 PM Fri Oct 03 2025 50F 40F / 66% S 21 G 48 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 PM Fri Oct 03 2025 52F 44F / 61% S 20 G 49 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 PM Fri Oct 03 2025 53F 44F / 50% S 17 G 42 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 PM Fri Oct 03 2025 52F 45F / 56% S 15 G 38 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 PM Fri Oct 03 2025 52F 45F / 58% S 15 G 39 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 PM Fri Oct 03 2025 52F 44F / 52% SSW 16 G 35 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 PM Fri Oct 03 2025 49F 44F / 46% SSW 17 G 35 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 PM Fri Oct 03 2025 46F 42F / 42% SSW 17 G 36 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 PM Fri Oct 03 2025 44F 41F / 45% SSW 18 G 34 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 PM Fri Oct 03 2025 44F 40F / 48% SW 13 G 30 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 PM Fri Oct 03 2025 41F 37F / 86% S 12 G 25 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 PM Fri Oct 03 2025 41F 38F / 61% S 12 G 31 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 AM Sat Oct 04 2025 40F 36F / 59% S 12 G 27 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"