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 18Z 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 12 PM Tue Apr 29 2025 36F 28F / 86% ENE 2 G 7 MPH 8300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Tue Apr 29 2025 35F 28F / 86% NNW 3 G 5 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Tue Apr 29 2025 37F 30F / 59% ESE 3 G 6 MPH 8600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Tue Apr 29 2025 39F 31F / 66% W 5 G 11 MPH 8700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Tue Apr 29 2025 39F 31F / 71% W 7 G 13 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Tue Apr 29 2025 39F 31F / 74% WNW 10 G 18 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Tue Apr 29 2025 37F 30F / 78% WNW 10 G 19 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Tue Apr 29 2025 34F 29F / 79% WNW 11 G 18 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Tue Apr 29 2025 31F 27F / 73% W 10 G 16 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Tue Apr 29 2025 30F 27F / 60% W 12 G 19 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Tue Apr 29 2025 29F 27F / 51% W 12 G 19 MPH 8400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Tue Apr 29 2025 29F 27F / 60% WNW 15 G 22 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Wed Apr 30 2025 29F 26F / 62% WNW 16 G 24 MPH 9200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Wed Apr 30 2025 30F 26F / 75% WNW 17 G 26 MPH 8100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Wed Apr 30 2025 29F 26F / 71% WNW 15 G 23 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Wed Apr 30 2025 29F 25F / 77% WNW 13 G 19 MPH 8900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Wed Apr 30 2025 28F 25F / 77% W 17 G 25 MPH 8100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Wed Apr 30 2025 28F 24F / 77% W 16 G 23 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Wed Apr 30 2025 27F 23F / 87% W 15 G 22 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Wed Apr 30 2025 26F 23F / 94% W 17 G 26 MPH 8700 FT 8:1 / 12% 0.01" / 0.1" 0.01" / 0.1" 20 08 AM Wed Apr 30 2025 29F 25F / 95% W 20 G 31 MPH 9000 FT 7:1 / 14% 0.00" / 0.0" 0.01" / 0.1" 21 09 AM Wed Apr 30 2025 31F 25F / 93% W 22 G 34 MPH 9000 FT 7:1 / 14% 0.01" / 0.1" 0.02" / 0.2" 22 10 AM Wed Apr 30 2025 32F 25F / 100% WSW 20 G 31 MPH 8700 FT 7:1 / 14% 0.00" / 0.0" 0.02" / 0.2" 23 11 AM Wed Apr 30 2025 33F 26F / 100% WSW 17 G 29 MPH 8700 FT 7:1 / 14% 0.01" / 0.1" 0.03" / 0.3" 24 12 PM Wed Apr 30 2025 32F 27F / 95% W 15 G 24 MPH 8500 FT 9:1 / 11% 0.05" / 0.4" 0.08" / 0.7" 25 01 PM Wed Apr 30 2025 34F 28F / 98% WNW 17 G 27 MPH 8000 FT 8:1 / 12% 0.09" / 0.7" 0.17" / 1.4" 26 02 PM Wed Apr 30 2025 33F 27F / 97% WNW 15 G 25 MPH 8100 FT 9:1 / 11% 0.06" / 0.5" 0.23" / 1.9" 27 03 PM Wed Apr 30 2025 34F 26F / 100% WNW 16 G 25 MPH 8500 FT 9:1 / 11% 0.05" / 0.4" 0.28" / 2.3" 28 04 PM Wed Apr 30 2025 35F 27F / 93% W 12 G 21 MPH 8100 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 29 05 PM Wed Apr 30 2025 35F 27F / 98% WNW 13 G 23 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 30 06 PM Wed Apr 30 2025 33F 26F / 100% WNW 16 G 25 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 31 07 PM Wed Apr 30 2025 32F 25F / 93% WNW 17 G 27 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 32 08 PM Wed Apr 30 2025 29F 23F / 99% S 15 G 26 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 33 09 PM Wed Apr 30 2025 27F 23F / 88% NW 19 G 28 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 34 10 PM Wed Apr 30 2025 26F 23F / 85% NW 19 G 28 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 35 11 PM Wed Apr 30 2025 26F 22F / 84% NW 18 G 27 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.28" / 2.3" 36 12 AM Thu May 01 2025 25F 22F / 75% NW 18 G 26 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 37 01 AM Thu May 01 2025 25F 23F / 71% NW 16 G 24 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 38 02 AM Thu May 01 2025 24F 22F / 71% NW 18 G 24 MPH 7900 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 39 03 AM Thu May 01 2025 24F 22F / 79% NW 15 G 20 MPH 7900 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 40 04 AM Thu May 01 2025 23F 22F / 75% NW 14 G 21 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 41 05 AM Thu May 01 2025 23F 21F / 82% NNW 14 G 19 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 42 06 AM Thu May 01 2025 23F 21F / 82% N 15 G 20 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 43 07 AM Thu May 01 2025 23F 21F / 72% NNW 14 G 20 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 44 08 AM Thu May 01 2025 24F 23F / 71% N 14 G 21 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 45 09 AM Thu May 01 2025 27F 25F / 73% N 14 G 19 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 46 10 AM Thu May 01 2025 29F 26F / 72% NNE 12 G 20 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 47 11 AM Thu May 01 2025 32F 27F / 66% NNE 10 G 17 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3" 48 12 PM Thu May 01 2025 35F 28F / 69% N 7 G 15 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.28" / 2.3"