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 15-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 Thu May 15 2025 32F 22F / 93% W 19 G 32 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Thu May 15 2025 33F 23F / 95% W 17 G 27 MPH 7700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Thu May 15 2025 33F 23F / 95% WNW 16 G 24 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Thu May 15 2025 34F 24F / 90% WNW 20 G 31 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Thu May 15 2025 35F 24F / 87% W 19 G 31 MPH 7800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Thu May 15 2025 34F 24F / 79% W 21 G 33 MPH 8000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Thu May 15 2025 33F 25F / 73% W 21 G 33 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Thu May 15 2025 32F 24F / 75% W 22 G 34 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Thu May 15 2025 30F 24F / 79% W 24 G 36 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Thu May 15 2025 29F 24F / 73% W 24 G 36 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Thu May 15 2025 30F 24F / 72% W 23 G 35 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Thu May 15 2025 29F 24F / 72% W 22 G 32 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Fri May 16 2025 29F 24F / 76% W 23 G 31 MPH 7200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Fri May 16 2025 29F 25F / 71% WNW 23 G 34 MPH 7700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Fri May 16 2025 29F 24F / 72% WNW 24 G 35 MPH 7100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Fri May 16 2025 29F 25F / 65% WNW 25 G 34 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Fri May 16 2025 29F 25F / 60% WNW 25 G 35 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Fri May 16 2025 29F 24F / 54% W 24 G 35 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Fri May 16 2025 29F 24F / 50% W 24 G 36 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Fri May 16 2025 29F 24F / 54% W 24 G 34 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Fri May 16 2025 29F 24F / 57% W 24 G 34 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Fri May 16 2025 30F 25F / 61% W 23 G 33 MPH 6900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Fri May 16 2025 32F 25F / 61% W 21 G 32 MPH 7000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Fri May 16 2025 34F 26F / 64% W 19 G 32 MPH 7400 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Fri May 16 2025 35F 28F / 67% W 17 G 28 MPH 7500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Fri May 16 2025 36F 29F / 70% W 16 G 27 MPH 8000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Fri May 16 2025 37F 29F / 68% W 14 G 25 MPH 8100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Fri May 16 2025 38F 30F / 71% W 14 G 24 MPH 8400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Fri May 16 2025 38F 30F / 70% W 12 G 22 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Fri May 16 2025 38F 30F / 71% W 12 G 21 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Fri May 16 2025 36F 30F / 73% W 12 G 21 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Fri May 16 2025 35F 29F / 76% W 14 G 21 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Fri May 16 2025 34F 29F / 82% WSW 14 G 23 MPH 9200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Fri May 16 2025 33F 29F / 70% WSW 14 G 23 MPH 9200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Fri May 16 2025 33F 29F / 69% SW 14 G 23 MPH 9300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Fri May 16 2025 33F 29F / 72% WSW 16 G 25 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Sat May 17 2025 33F 29F / 75% WSW 16 G 26 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Sat May 17 2025 34F 31F / 70% SW 17 G 29 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Sat May 17 2025 34F 31F / 70% SW 16 G 26 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Sat May 17 2025 34F 31F / 70% SW 16 G 29 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Sat May 17 2025 35F 31F / 67% SW 19 G 30 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Sat May 17 2025 34F 31F / 67% SW 18 G 31 MPH 9600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Sat May 17 2025 34F 30F / 69% SW 18 G 30 MPH 9600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Sat May 17 2025 33F 29F / 85% SW 15 G 27 MPH 9600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Sat May 17 2025 34F 30F / 78% SSW 18 G 32 MPH 9500 FT 9:1 / 11% 0.02" / 0.2" 0.02" / 0.2" 45 09 AM Sat May 17 2025 33F 29F / 73% SSW 16 G 30 MPH 9700 FT 8:1 / 12% 0.00" / 0.0" 0.02" / 0.2" 46 10 AM Sat May 17 2025 37F 30F / 77% S 17 G 35 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.02" / 0.2" 47 11 AM Sat May 17 2025 41F 32F / 68% S 17 G 32 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.02" / 0.2" 48 12 PM Sat May 17 2025 42F 34F / 64% S 15 G 31 MPH 9600 FT 9:1 / 11% 0.00" / 0.0" 0.02" / 0.2"