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 24-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 Thu Apr 24 2025 36F 29F / 68% WSW 14 G 26 MPH 8600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Thu Apr 24 2025 38F 29F / 81% WSW 11 G 19 MPH 9000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Thu Apr 24 2025 40F 30F / 75% WSW 10 G 17 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Thu Apr 24 2025 40F 31F / 78% WSW 10 G 17 MPH 9500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Thu Apr 24 2025 40F 32F / 80% SSW 11 G 24 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Thu Apr 24 2025 38F 31F / 74% SW 13 G 23 MPH 9600 FT 8:1 / 12% 0.07" / 0.6" 0.07" / 0.6" 6 06 PM Thu Apr 24 2025 39F 32F / 77% WSW 9 G 15 MPH 9700 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 0.6" 7 07 PM Thu Apr 24 2025 38F 32F / 72% WSW 8 G 14 MPH 9600 FT 10:1 / 10% 0.00" / 0.0" 0.07" / 0.6" 8 08 PM Thu Apr 24 2025 36F 30F / 86% W 8 G 14 MPH 9700 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 0.6" 9 09 PM Thu Apr 24 2025 32F 27F / 100% SW 16 G 28 MPH 9700 FT 7:1 / 14% 0.08" / 0.6" 0.15" / 1.2" 10 10 PM Thu Apr 24 2025 32F 30F / 64% WSW 13 G 21 MPH 9400 FT 9:1 / 11% 0.05" / 0.4" 0.20" / 1.6" 11 11 PM Thu Apr 24 2025 33F 30F / 60% SSE 10 G 16 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 0.20" / 1.6" 12 12 AM Fri Apr 25 2025 33F 31F / 60% SSE 13 G 22 MPH 9400 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 13 01 AM Fri Apr 25 2025 33F 32F / 55% SSW 14 G 25 MPH 9300 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 14 02 AM Fri Apr 25 2025 33F 31F / 62% SSE 13 G 23 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 15 03 AM Fri Apr 25 2025 33F 30F / 68% SSE 14 G 25 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 16 04 AM Fri Apr 25 2025 33F 30F / 71% SE 15 G 27 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 17 05 AM Fri Apr 25 2025 33F 29F / 78% SE 15 G 28 MPH 9400 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 18 06 AM Fri Apr 25 2025 33F 29F / 79% SE 14 G 28 MPH 9400 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 19 07 AM Fri Apr 25 2025 33F 29F / 80% SE 14 G 27 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 20 08 AM Fri Apr 25 2025 33F 29F / 76% SE 14 G 27 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 21 09 AM Fri Apr 25 2025 34F 30F / 75% SE 13 G 28 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 22 10 AM Fri Apr 25 2025 35F 30F / 76% SE 10 G 28 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 23 11 AM Fri Apr 25 2025 39F 31F / 80% SE 10 G 29 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 24 12 PM Fri Apr 25 2025 42F 33F / 78% SE 9 G 27 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 25 01 PM Fri Apr 25 2025 44F 35F / 69% SE 8 G 23 MPH 9700 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 26 02 PM Fri Apr 25 2025 45F 36F / 61% SSE 7 G 21 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 27 03 PM Fri Apr 25 2025 45F 36F / 39% S 9 G 25 MPH 9400 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 28 04 PM Fri Apr 25 2025 45F 36F / 39% S 10 G 23 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 29 05 PM Fri Apr 25 2025 45F 37F / 41% S 10 G 24 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 30 06 PM Fri Apr 25 2025 43F 37F / 42% S 9 G 21 MPH 9700 FT 10:1 / 10% 0.00" / 0.0" 0.20" / 1.6" 31 07 PM Fri Apr 25 2025 41F 36F / 49% S 10 G 20 MPH 9900 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 32 08 PM Fri Apr 25 2025 39F 35F / 47% SSW 12 G 23 MPH 9600 FT 11:1 / 9% 0.00" / 0.0" 0.20" / 1.6" 33 09 PM Fri Apr 25 2025 36F 33F / 37% S 12 G 24 MPH 9200 FT 10:1 / 10% 0.00" / 0.0" 0.20" / 1.6" 34 10 PM Fri Apr 25 2025 35F 32F / 39% S 11 G 27 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 35 11 PM Fri Apr 25 2025 35F 32F / 45% S 14 G 27 MPH 9100 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 36 12 AM Sat Apr 26 2025 34F 31F / 47% S 14 G 29 MPH 9000 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 37 01 AM Sat Apr 26 2025 35F 32F / 50% S 16 G 32 MPH 8800 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 38 02 AM Sat Apr 26 2025 34F 32F / 47% S 18 G 32 MPH 8300 FT 7:1 / 14% 0.00" / 0.0" 0.20" / 1.6" 39 03 AM Sat Apr 26 2025 34F 31F / 45% S 16 G 33 MPH 8000 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 40 04 AM Sat Apr 26 2025 34F 32F / 47% S 17 G 33 MPH 7700 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 41 05 AM Sat Apr 26 2025 33F 31F / 46% S 17 G 35 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 42 06 AM Sat Apr 26 2025 33F 31F / 48% SSE 17 G 33 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 43 07 AM Sat Apr 26 2025 34F 31F / 44% SSE 17 G 31 MPH 7600 FT 9:1 / 11% 0.00" / 0.0" 0.20" / 1.6" 44 08 AM Sat Apr 26 2025 33F 30F / 47% SSE 16 G 36 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.6" 45 09 AM Sat Apr 26 2025 34F 31F / 50% SSE 16 G 38 MPH 7600 FT 7:1 / 14% 0.00" / 0.0" 0.20" / 1.6" 46 10 AM Sat Apr 26 2025 35F 31F / 53% SSE 17 G 37 MPH 7700 FT 7:1 / 14% 0.00" / 0.0" 0.20" / 1.6" 47 11 AM Sat Apr 26 2025 38F 31F / 56% SSE 17 G 38 MPH 7600 FT 7:1 / 14% 0.00" / 0.0" 0.20" / 1.6" 48 12 PM Sat Apr 26 2025 41F 32F / 47% SSE 16 G 37 MPH 7800 FT 7:1 / 14% 0.00" / 0.0" 0.20" / 1.6"