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 16-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 Fri May 16 2025 37F 29F / 87% W 13 G 21 MPH 8600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Fri May 16 2025 36F 29F / 84% WSW 10 G 18 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Fri May 16 2025 39F 30F / 86% W 9 G 16 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Fri May 16 2025 40F 31F / 83% W 10 G 18 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Fri May 16 2025 40F 31F / 84% W 10 G 16 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Fri May 16 2025 39F 31F / 80% WSW 9 G 16 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Fri May 16 2025 38F 31F / 79% WSW 9 G 15 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Fri May 16 2025 37F 30F / 80% W 10 G 16 MPH 9100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Fri May 16 2025 35F 29F / 76% W 13 G 20 MPH 9000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Fri May 16 2025 33F 29F / 74% W 16 G 22 MPH 9200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Fri May 16 2025 33F 29F / 67% WSW 16 G 23 MPH 9200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Fri May 16 2025 33F 30F / 68% WSW 16 G 22 MPH 9200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sat May 17 2025 33F 30F / 64% WSW 15 G 21 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sat May 17 2025 33F 30F / 63% WSW 15 G 23 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sat May 17 2025 34F 30F / 61% WSW 14 G 23 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Sat May 17 2025 34F 29F / 74% WSW 13 G 20 MPH 9400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Sat May 17 2025 34F 29F / 80% SW 15 G 27 MPH 9400 FT 9:1 / 11% 0.02" / 0.2" 0.02" / 0.2" 17 05 AM Sat May 17 2025 34F 29F / 92% SSW 20 G 35 MPH 9700 FT 6:1 / 17% 0.00" / 0.0" 0.02" / 0.2" 18 06 AM Sat May 17 2025 33F 30F / 81% SW 23 G 38 MPH 9700 FT 6:1 / 17% 0.02" / 0.1" 0.04" / 0.3" 19 07 AM Sat May 17 2025 33F 29F / 90% SSW 20 G 36 MPH 9900 FT 5:1 / 20% 0.00" / 0.0" 0.04" / 0.3" 20 08 AM Sat May 17 2025 35F 31F / 72% SW 21 G 36 MPH 9800 FT 6:1 / 17% 0.00" / 0.0" 0.04" / 0.3" 21 09 AM Sat May 17 2025 36F 30F / 83% SSW 15 G 26 MPH 9800 FT 8:1 / 12% 0.00" / 0.0" 0.04" / 0.3" 22 10 AM Sat May 17 2025 37F 30F / 72% SSW 15 G 31 MPH 9600 FT 9:1 / 11% 0.00" / 0.0" 0.04" / 0.3" 23 11 AM Sat May 17 2025 39F 30F / 69% SSW 14 G 30 MPH 9300 FT 8:1 / 12% 0.00" / 0.0" 0.04" / 0.3" 24 12 PM Sat May 17 2025 41F 32F / 69% SSW 12 G 27 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.04" / 0.3" 25 01 PM Sat May 17 2025 42F 33F / 62% S 15 G 34 MPH 9700 FT 7:1 / 14% 0.00" / 0.0" 0.04" / 0.3" 26 02 PM Sat May 17 2025 44F 35F / 51% S 16 G 36 MPH 9900 FT 6:1 / 17% 0.00" / 0.0" 0.04" / 0.3" 27 03 PM Sat May 17 2025 46F 36F / 52% SSW 15 G 35 MPH 9900 FT 5:1 / 20% 0.00" / 0.0" 0.04" / 0.3" 28 04 PM Sat May 17 2025 47F 37F / 50% SSW 14 G 31 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.04" / 0.3" 29 05 PM Sat May 17 2025 46F 36F / 54% SSW 15 G 34 MPH 10200 FT 3:1 / 33% 0.00" / 0.0" 0.04" / 0.3" 30 06 PM Sat May 17 2025 39F 32F / 100% W 13 G 28 MPH 10100 FT 5:1 / 20% 0.00" / 0.0" 0.04" / 0.3" 31 07 PM Sat May 17 2025 36F 30F / 100% SW 11 G 24 MPH 10000 FT 5:1 / 20% 0.07" / 0.4" 0.11" / 0.7" 32 08 PM Sat May 17 2025 37F 32F / 83% SSW 15 G 32 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.11" / 0.7" 33 09 PM Sat May 17 2025 36F 30F / 86% SSW 17 G 36 MPH 10200 FT 4:1 / 25% 0.00" / 0.0" 0.11" / 0.7" 34 10 PM Sat May 17 2025 35F 28F / 98% SSW 14 G 31 MPH 9800 FT 6:1 / 17% 0.00" / 0.0" 0.11" / 0.7" 35 11 PM Sat May 17 2025 34F 28F / 100% S 15 G 31 MPH 9300 FT 7:1 / 14% 0.01" / 0.1" 0.12" / 0.8" 36 12 AM Sun May 18 2025 35F 28F / 98% S 16 G 33 MPH 8400 FT 7:1 / 14% 0.02" / 0.1" 0.14" / 0.9" 37 01 AM Sun May 18 2025 30F 26F / 92% WSW 15 G 29 MPH 8000 FT 8:1 / 12% 0.08" / 0.6" 0.22" / 1.5" 38 02 AM Sun May 18 2025 30F 24F / 97% W 15 G 25 MPH 7900 FT 10:1 / 10% 0.09" / 0.9" 0.31" / 2.4" 39 03 AM Sun May 18 2025 29F 24F / 97% WNW 11 G 22 MPH 7900 FT 11:1 / 9% 0.02" / 0.2" 0.33" / 2.6" 40 04 AM Sun May 18 2025 30F 24F / 99% NW 12 G 21 MPH 7800 FT 9:1 / 11% 0.07" / 0.6" 0.40" / 3.2" 41 05 AM Sun May 18 2025 29F 23F / 100% WNW 15 G 21 MPH 8000 FT 8:1 / 12% 0.09" / 0.7" 0.49" / 3.9" 42 06 AM Sun May 18 2025 27F 22F / 94% WNW 22 G 33 MPH 7800 FT 8:1 / 12% 0.09" / 0.7" 0.58" / 4.6" 43 07 AM Sun May 18 2025 27F 22F / 100% WNW 23 G 32 MPH 7500 FT 8:1 / 12% 0.09" / 0.7" 0.67" / 5.3" 44 08 AM Sun May 18 2025 26F 21F / 97% W 26 G 35 MPH 7100 FT 9:1 / 11% 0.09" / 0.8" 0.76" / 6.1" 45 09 AM Sun May 18 2025 27F 20F / 91% WNW 23 G 36 MPH 6900 FT 9:1 / 11% 0.05" / 0.4" 0.81" / 6.5" 46 10 AM Sun May 18 2025 26F 19F / 92% W 21 G 35 MPH 6800 FT 8:1 / 12% 0.06" / 0.5" 0.87" / 7.0" 47 11 AM Sun May 18 2025 25F 19F / 90% W 19 G 33 MPH 6300 FT 10:1 / 10% 0.02" / 0.2" 0.89" / 7.2" 48 12 PM Sun May 18 2025 25F 18F / 87% W 17 G 33 MPH 6300 FT 11:1 / 9% 0.00" / 0.0" 0.89" / 7.2"