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 20-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 06 AM Tue May 20 2025 27F 23F / 96% W 20 G 29 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Tue May 20 2025 27F 23F / 78% W 22 G 32 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Tue May 20 2025 28F 24F / 67% W 19 G 29 MPH 7200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Tue May 20 2025 29F 24F / 72% W 22 G 32 MPH 7200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Tue May 20 2025 31F 25F / 72% W 21 G 33 MPH 7400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Tue May 20 2025 34F 26F / 78% W 20 G 30 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Tue May 20 2025 36F 27F / 79% W 19 G 31 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Tue May 20 2025 38F 28F / 74% W 18 G 30 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Tue May 20 2025 41F 30F / 69% W 16 G 27 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Tue May 20 2025 41F 31F / 66% W 17 G 29 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Tue May 20 2025 42F 31F / 67% W 21 G 33 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Tue May 20 2025 42F 32F / 62% W 20 G 34 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Tue May 20 2025 40F 32F / 62% W 22 G 34 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Tue May 20 2025 38F 32F / 62% W 22 G 34 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Tue May 20 2025 35F 31F / 67% W 23 G 35 MPH 9600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Tue May 20 2025 34F 30F / 64% W 25 G 38 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Tue May 20 2025 34F 31F / 52% W 27 G 41 MPH 9600 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Tue May 20 2025 33F 30F / 59% W 25 G 36 MPH 9300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Wed May 21 2025 33F 30F / 59% W 27 G 39 MPH 9500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Wed May 21 2025 32F 29F / 65% W 26 G 37 MPH 9500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Wed May 21 2025 31F 28F / 74% WNW 28 G 41 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Wed May 21 2025 31F 28F / 73% WNW 28 G 40 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Wed May 21 2025 30F 28F / 69% WNW 26 G 37 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Wed May 21 2025 31F 27F / 58% WNW 26 G 38 MPH 7700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Wed May 21 2025 30F 27F / 60% WNW 26 G 38 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Wed May 21 2025 30F 27F / 58% WNW 27 G 38 MPH 7300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Wed May 21 2025 31F 27F / 57% WNW 27 G 38 MPH 7000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Wed May 21 2025 32F 28F / 58% WNW 26 G 36 MPH 6900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 28 10 AM Wed May 21 2025 34F 29F / 57% WNW 21 G 31 MPH 7000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 29 11 AM Wed May 21 2025 37F 29F / 53% W 19 G 29 MPH 7400 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 30 12 PM Wed May 21 2025 40F 31F / 55% W 18 G 29 MPH 7700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 31 01 PM Wed May 21 2025 42F 32F / 51% W 16 G 24 MPH 8000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 32 02 PM Wed May 21 2025 44F 33F / 45% W 15 G 23 MPH 8200 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 33 03 PM Wed May 21 2025 46F 35F / 39% W 13 G 21 MPH 8500 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 34 04 PM Wed May 21 2025 46F 36F / 37% W 13 G 20 MPH 8800 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 35 05 PM Wed May 21 2025 46F 37F / 36% W 12 G 20 MPH 9000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 36 06 PM Wed May 21 2025 44F 36F / 39% W 14 G 21 MPH 9100 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 37 07 PM Wed May 21 2025 44F 40F / 33% W 15 G 23 MPH 9200 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 38 08 PM Wed May 21 2025 41F 39F / 36% W 19 G 27 MPH 9300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 39 09 PM Wed May 21 2025 38F 37F / 33% W 20 G 26 MPH 9300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 40 10 PM Wed May 21 2025 39F 38F / 31% WSW 19 G 27 MPH 9300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 41 11 PM Wed May 21 2025 39F 38F / 28% WSW 17 G 25 MPH 9300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 42 12 AM Thu May 22 2025 40F 39F / 29% WSW 19 G 28 MPH 9600 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 43 01 AM Thu May 22 2025 41F 40F / 30% SW 17 G 27 MPH 9700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 44 02 AM Thu May 22 2025 41F 39F / 30% SW 17 G 28 MPH 9800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 45 03 AM Thu May 22 2025 40F 39F / 32% SW 20 G 30 MPH 9900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 46 04 AM Thu May 22 2025 39F 38F / 35% SSW 21 G 31 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 47 05 AM Thu May 22 2025 38F 37F / 36% SSW 21 G 31 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 48 06 AM Thu May 22 2025 37F 37F / 40% SW 21 G 32 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0"