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 14-May-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 Wed May 14 2025 27F 19F / 96% W 12 G 19 MPH 6900 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Wed May 14 2025 28F 21F / 98% W 12 G 21 MPH 7200 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Wed May 14 2025 31F 21F / 94% W 17 G 27 MPH 7300 FT 12:1 / 8% 0.02" / 0.2" 0.02" / 0.2" 3 03 PM Wed May 14 2025 30F 21F / 99% W 15 G 25 MPH 6900 FT 11:1 / 9% 0.04" / 0.4" 0.06" / 0.6" 4 04 PM Wed May 14 2025 28F 19F / 91% W 23 G 37 MPH 7800 FT 10:1 / 10% 0.09" / 0.9" 0.15" / 1.5" 5 05 PM Wed May 14 2025 30F 21F / 90% W 22 G 35 MPH 7500 FT 11:1 / 9% 0.01" / 0.1" 0.16" / 1.6" 6 06 PM Wed May 14 2025 27F 20F / 92% WNW 23 G 35 MPH 7300 FT 10:1 / 10% 0.02" / 0.2" 0.18" / 1.8" 7 07 PM Wed May 14 2025 26F 20F / 93% WNW 24 G 37 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.18" / 1.8" 8 08 PM Wed May 14 2025 24F 18F / 100% WNW 26 G 40 MPH 7700 FT 10:1 / 10% 0.05" / 0.5" 0.23" / 2.3" 9 09 PM Wed May 14 2025 25F 19F / 98% WNW 24 G 36 MPH 7600 FT 9:1 / 11% 0.11" / 1.0" 0.34" / 3.3" 10 10 PM Wed May 14 2025 25F 19F / 97% WNW 25 G 39 MPH 7400 FT 8:1 / 12% 0.03" / 0.2" 0.37" / 3.5" 11 11 PM Wed May 14 2025 25F 19F / 99% WNW 26 G 41 MPH 7700 FT 9:1 / 11% 0.09" / 0.8" 0.46" / 4.3" 12 12 AM Thu May 15 2025 25F 20F / 94% WNW 26 G 41 MPH 8100 FT 10:1 / 10% 0.04" / 0.4" 0.50" / 4.7" 13 01 AM Thu May 15 2025 25F 19F / 98% WNW 22 G 33 MPH 8000 FT 11:1 / 9% 0.00" / 0.0" 0.50" / 4.7" 14 02 AM Thu May 15 2025 24F 19F / 97% WNW 21 G 31 MPH 7900 FT 11:1 / 9% 0.00" / 0.0" 0.50" / 4.7" 15 03 AM Thu May 15 2025 25F 19F / 98% WNW 20 G 30 MPH 7700 FT 12:1 / 8% 0.00" / 0.0" 0.50" / 4.7" 16 04 AM Thu May 15 2025 23F 18F / 87% WNW 23 G 35 MPH 7600 FT 12:1 / 8% 0.00" / 0.0" 0.50" / 4.7" 17 05 AM Thu May 15 2025 23F 18F / 98% WNW 22 G 32 MPH 7600 FT 12:1 / 8% 0.00" / 0.0" 0.50" / 4.7" 18 06 AM Thu May 15 2025 24F 18F / 100% WNW 21 G 32 MPH 7600 FT 11:1 / 9% 0.00" / 0.0" 0.50" / 4.7" 19 07 AM Thu May 15 2025 24F 18F / 100% WNW 20 G 32 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.50" / 4.7" 20 08 AM Thu May 15 2025 23F 18F / 95% WNW 20 G 31 MPH 7300 FT 11:1 / 9% 0.02" / 0.2" 0.52" / 4.9" 21 09 AM Thu May 15 2025 24F 18F / 98% WNW 22 G 32 MPH 7400 FT 10:1 / 10% 0.05" / 0.5" 0.57" / 5.4" 22 10 AM Thu May 15 2025 24F 18F / 97% WNW 21 G 32 MPH 7100 FT 10:1 / 10% 0.01" / 0.1" 0.58" / 5.5" 23 11 AM Thu May 15 2025 26F 19F / 95% WNW 20 G 32 MPH 7000 FT 12:1 / 8% 0.00" / 0.0" 0.58" / 5.5" 24 12 PM Thu May 15 2025 28F 20F / 96% WNW 21 G 33 MPH 7400 FT 12:1 / 8% 0.04" / 0.5" 0.62" / 6.0" 25 01 PM Thu May 15 2025 30F 21F / 94% WNW 20 G 30 MPH 7200 FT 11:1 / 9% 0.01" / 0.1" 0.63" / 6.1" 26 02 PM Thu May 15 2025 30F 21F / 95% WNW 20 G 31 MPH 7400 FT 11:1 / 9% 0.02" / 0.2" 0.65" / 6.3" 27 03 PM Thu May 15 2025 31F 21F / 89% W 23 G 35 MPH 7600 FT 11:1 / 9% 0.07" / 0.8" 0.72" / 7.1" 28 04 PM Thu May 15 2025 33F 22F / 85% W 22 G 34 MPH 7600 FT 12:1 / 8% 0.00" / 0.0" 0.72" / 7.1" 29 05 PM Thu May 15 2025 32F 21F / 90% W 24 G 38 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.72" / 7.1" 30 06 PM Thu May 15 2025 31F 22F / 90% W 22 G 36 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.72" / 7.1" 31 07 PM Thu May 15 2025 29F 22F / 89% W 23 G 37 MPH 7900 FT 11:1 / 9% 0.00" / 0.0" 0.72" / 7.1" 32 08 PM Thu May 15 2025 27F 21F / 86% WNW 25 G 38 MPH 7900 FT 10:1 / 10% 0.00" / 0.0" 0.72" / 7.1" 33 09 PM Thu May 15 2025 27F 21F / 76% WNW 26 G 39 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 34 10 PM Thu May 15 2025 26F 21F / 74% WNW 25 G 39 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 35 11 PM Thu May 15 2025 26F 21F / 75% WNW 25 G 37 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.72" / 7.1" 36 12 AM Fri May 16 2025 26F 22F / 71% WNW 27 G 40 MPH 7600 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 37 01 AM Fri May 16 2025 27F 24F / 66% WNW 28 G 43 MPH 7600 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 38 02 AM Fri May 16 2025 26F 24F / 62% WNW 27 G 40 MPH 7600 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 39 03 AM Fri May 16 2025 27F 24F / 58% WNW 27 G 40 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 40 04 AM Fri May 16 2025 27F 25F / 53% WNW 28 G 40 MPH 7400 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 41 05 AM Fri May 16 2025 27F 25F / 52% WNW 28 G 40 MPH 7500 FT 8:1 / 12% 0.00" / 0.0" 0.72" / 7.1" 42 06 AM Fri May 16 2025 26F 24F / 56% WNW 26 G 38 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 43 07 AM Fri May 16 2025 26F 23F / 67% W 23 G 35 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.72" / 7.1" 44 08 AM Fri May 16 2025 27F 24F / 68% W 21 G 31 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.72" / 7.1" 45 09 AM Fri May 16 2025 29F 24F / 75% W 20 G 29 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.72" / 7.1" 46 10 AM Fri May 16 2025 30F 25F / 82% W 17 G 27 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 47 11 AM Fri May 16 2025 31F 26F / 85% W 17 G 26 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.72" / 7.1" 48 12 PM Fri May 16 2025 33F 26F / 87% WSW 15 G 25 MPH 7800 FT 8:1 / 12% 0.01" / 0.1" 0.73" / 7.2"