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 12Z 29-Apr-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 AM Tue Apr 29 2025 24F 23F / 61% NNW 11 G 13 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Tue Apr 29 2025 24F 22F / 67% N 9 G 12 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Tue Apr 29 2025 24F 22F / 71% NNE 9 G 14 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Tue Apr 29 2025 27F 23F / 69% NE 9 G 14 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Tue Apr 29 2025 29F 25F / 69% NE 8 G 13 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Tue Apr 29 2025 32F 25F / 69% NNE 6 G 9 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Tue Apr 29 2025 34F 27F / 64% NNW 5 G 10 MPH 7900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Tue Apr 29 2025 37F 29F / 77% NNW 5 G 9 MPH 8200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Tue Apr 29 2025 38F 29F / 77% NW 7 G 13 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Tue Apr 29 2025 40F 31F / 75% NW 8 G 15 MPH 8400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Tue Apr 29 2025 40F 31F / 72% WNW 9 G 16 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Tue Apr 29 2025 39F 31F / 71% WNW 9 G 18 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Tue Apr 29 2025 36F 30F / 67% WNW 10 G 18 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Tue Apr 29 2025 33F 28F / 65% WNW 12 G 20 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Tue Apr 29 2025 30F 26F / 67% WNW 11 G 16 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Tue Apr 29 2025 28F 26F / 60% W 12 G 18 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Tue Apr 29 2025 28F 26F / 57% W 15 G 23 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Tue Apr 29 2025 29F 26F / 50% WNW 15 G 22 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Wed Apr 30 2025 29F 26F / 60% WNW 15 G 21 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Wed Apr 30 2025 29F 26F / 75% WNW 12 G 20 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Wed Apr 30 2025 28F 25F / 85% W 15 G 23 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Wed Apr 30 2025 28F 24F / 92% WNW 15 G 22 MPH 9300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Wed Apr 30 2025 28F 24F / 99% WNW 18 G 27 MPH 9100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Wed Apr 30 2025 29F 24F / 100% WNW 17 G 26 MPH 9000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Wed Apr 30 2025 28F 24F / 98% WNW 21 G 31 MPH 9100 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Wed Apr 30 2025 29F 24F / 100% WNW 20 G 31 MPH 9000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Wed Apr 30 2025 30F 25F / 100% W 18 G 27 MPH 8800 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Wed Apr 30 2025 30F 25F / 100% W 18 G 27 MPH 8600 FT 8:1 / 12% 0.04" / 0.3" 0.04" / 0.3" 28 10 AM Wed Apr 30 2025 30F 24F / 100% W 18 G 29 MPH 8500 FT 7:1 / 14% 0.02" / 0.1" 0.06" / 0.4" 29 11 AM Wed Apr 30 2025 31F 26F / 99% WNW 13 G 19 MPH 8600 FT 10:1 / 10% 0.01" / 0.1" 0.07" / 0.5" 30 12 PM Wed Apr 30 2025 33F 27F / 98% WNW 11 G 19 MPH 8800 FT 9:1 / 11% 0.05" / 0.4" 0.12" / 0.9" 31 01 PM Wed Apr 30 2025 35F 28F / 100% WNW 12 G 21 MPH 9000 FT 10:1 / 10% 0.04" / 0.4" 0.16" / 1.3" 32 02 PM Wed Apr 30 2025 36F 28F / 95% W 14 G 22 MPH 9000 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.3" 33 03 PM Wed Apr 30 2025 35F 28F / 98% W 14 G 23 MPH 9000 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.3" 34 04 PM Wed Apr 30 2025 35F 27F / 96% W 15 G 22 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.3" 35 05 PM Wed Apr 30 2025 33F 27F / 94% W 15 G 22 MPH 8500 FT 10:1 / 10% 0.01" / 0.1" 0.17" / 1.4" 36 06 PM Wed Apr 30 2025 32F 26F / 93% WNW 12 G 19 MPH 7800 FT 9:1 / 11% 0.02" / 0.2" 0.19" / 1.6" 37 07 PM Wed Apr 30 2025 32F 27F / 91% WNW 11 G 18 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.19" / 1.6" 38 08 PM Wed Apr 30 2025 31F 27F / 88% W 11 G 16 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.19" / 1.6" 39 09 PM Wed Apr 30 2025 29F 25F / 91% W 12 G 16 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.19" / 1.6" 40 10 PM Wed Apr 30 2025 27F 23F / 87% NNW 13 G 18 MPH 8800 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 41 11 PM Wed Apr 30 2025 27F 23F / 100% NW 14 G 21 MPH 8900 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 42 12 AM Thu May 01 2025 26F 23F / 90% NNW 16 G 24 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.19" / 1.6" 43 01 AM Thu May 01 2025 25F 24F / 91% NNW 14 G 21 MPH 8700 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 44 02 AM Thu May 01 2025 25F 23F / 87% NNW 15 G 21 MPH 8600 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 45 03 AM Thu May 01 2025 25F 23F / 79% NW 14 G 19 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 46 04 AM Thu May 01 2025 25F 23F / 76% NNW 13 G 21 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 47 05 AM Thu May 01 2025 25F 23F / 79% NW 13 G 18 MPH 8400 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 48 06 AM Thu May 01 2025 25F 22F / 78% NW 15 G 20 MPH 8300 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6"