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 16-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 06 AM Wed Apr 16 2025 35F 32F / 32% WSW 12 G 17 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Wed Apr 16 2025 34F 31F / 36% SW 12 G 17 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Wed Apr 16 2025 34F 31F / 43% SW 13 G 19 MPH 9100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Wed Apr 16 2025 33F 31F / 39% S 14 G 23 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Wed Apr 16 2025 34F 31F / 45% S 14 G 25 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Wed Apr 16 2025 37F 31F / 52% SSW 15 G 27 MPH 9200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Wed Apr 16 2025 42F 33F / 46% WSW 16 G 29 MPH 9200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Wed Apr 16 2025 44F 35F / 46% WSW 16 G 27 MPH 9000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Wed Apr 16 2025 45F 35F / 48% WSW 11 G 21 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Wed Apr 16 2025 45F 35F / 43% W 8 G 15 MPH 9400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Wed Apr 16 2025 43F 34F / 49% WSW 10 G 16 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Wed Apr 16 2025 42F 34F / 56% SW 8 G 11 MPH 9600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Wed Apr 16 2025 40F 33F / 51% SW 11 G 20 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Wed Apr 16 2025 38F 32F / 60% W 19 G 30 MPH 9400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Wed Apr 16 2025 36F 31F / 61% WSW 17 G 26 MPH 9400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Wed Apr 16 2025 35F 31F / 56% WSW 18 G 28 MPH 9500 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Wed Apr 16 2025 33F 30F / 57% SW 17 G 29 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Wed Apr 16 2025 33F 30F / 61% WSW 18 G 29 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Thu Apr 17 2025 33F 30F / 61% WSW 19 G 30 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Thu Apr 17 2025 33F 29F / 59% WSW 20 G 32 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Thu Apr 17 2025 33F 29F / 66% WSW 20 G 32 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Thu Apr 17 2025 33F 28F / 73% SW 19 G 30 MPH 9100 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Thu Apr 17 2025 31F 26F / 80% WSW 18 G 30 MPH 8900 FT 9:1 / 11% 0.01" / 0.1" 0.01" / 0.1" 23 05 AM Thu Apr 17 2025 32F 27F / 77% WSW 19 G 30 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 24 06 AM Thu Apr 17 2025 29F 24F / 94% WSW 19 G 29 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 25 07 AM Thu Apr 17 2025 28F 21F / 96% W 18 G 28 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 26 08 AM Thu Apr 17 2025 26F 21F / 96% WSW 16 G 28 MPH 7000 FT 11:1 / 9% 0.04" / 0.4" 0.05" / 0.5" 27 09 AM Thu Apr 17 2025 26F 20F / 100% W 12 G 25 MPH 6700 FT 11:1 / 9% 0.03" / 0.3" 0.08" / 0.8" 28 10 AM Thu Apr 17 2025 26F 19F / 100% W 21 G 36 MPH 6500 FT 8:1 / 12% 0.12" / 1.0" 0.20" / 1.8" 29 11 AM Thu Apr 17 2025 26F 18F / 81% W 21 G 34 MPH 6500 FT 7:1 / 14% 0.02" / 0.1" 0.22" / 1.9" 30 12 PM Thu Apr 17 2025 27F 16F / 91% W 21 G 35 MPH 4700 FT 9:1 / 11% 0.00" / 0.0" 0.22" / 1.9" 31 01 PM Thu Apr 17 2025 26F 16F / 65% W 22 G 35 MPH 4600 FT 9:1 / 11% 0.00" / 0.0" 0.22" / 1.9" 32 02 PM Thu Apr 17 2025 26F 16F / 54% W 22 G 35 MPH 4800 FT 9:1 / 11% 0.00" / 0.0" 0.22" / 1.9" 33 03 PM Thu Apr 17 2025 27F 16F / 58% W 20 G 35 MPH 4900 FT 9:1 / 11% 0.00" / 0.0" 0.22" / 1.9" 34 04 PM Thu Apr 17 2025 28F 16F / 59% W 22 G 33 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.22" / 1.9" 35 05 PM Thu Apr 17 2025 27F 16F / 57% W 21 G 35 MPH 5100 FT 14:1 / 7% 0.00" / 0.0" 0.22" / 1.9" 36 06 PM Thu Apr 17 2025 24F 15F / 60% W 23 G 37 MPH 5100 FT 14:1 / 7% 0.00" / 0.0" 0.22" / 1.9" 37 07 PM Thu Apr 17 2025 24F 17F / 61% W 26 G 42 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 0.22" / 1.9" 38 08 PM Thu Apr 17 2025 21F 16F / 61% W 27 G 43 MPH 5300 FT 13:1 / 8% 0.00" / 0.0" 0.22" / 1.9" 39 09 PM Thu Apr 17 2025 20F 14F / 67% WNW 27 G 42 MPH 5300 FT 16:1 / 6% 0.00" / 0.0" 0.22" / 1.9" 40 10 PM Thu Apr 17 2025 19F 14F / 77% W 24 G 40 MPH 5100 FT 16:1 / 6% 0.00" / 0.0" 0.22" / 1.9" 41 11 PM Thu Apr 17 2025 18F 13F / 82% W 23 G 35 MPH 4900 FT 15:1 / 7% 0.00" / 0.0" 0.22" / 1.9" 42 12 AM Fri Apr 18 2025 18F 13F / 83% W 20 G 31 MPH 4900 FT 16:1 / 6% 0.00" / 0.0" 0.22" / 1.9" 43 01 AM Fri Apr 18 2025 18F 12F / 75% W 20 G 31 MPH 5200 FT 16:1 / 6% 0.00" / 0.0" 0.22" / 1.9" 44 02 AM Fri Apr 18 2025 16F 11F / 77% W 18 G 29 MPH 5100 FT 17:1 / 6% 0.00" / 0.0" 0.22" / 1.9" 45 03 AM Fri Apr 18 2025 14F 10F / 78% W 19 G 31 MPH 4600 FT 17:1 / 6% 0.00" / 0.0" 0.22" / 1.9" 46 04 AM Fri Apr 18 2025 13F 9F / 84% WSW 15 G 25 MPH 4600 FT 20:1 / 5% 0.00" / 0.0" 0.22" / 1.9" 47 05 AM Fri Apr 18 2025 14F 9F / 92% WSW 14 G 17 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.22" / 1.9" 48 06 AM Fri Apr 18 2025 14F 9F / 91% WNW 14 G 20 MPH 4400 FT 22:1 / 5% 0.04" / 0.9" 0.26" / 2.8"