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 27-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 Sun Apr 27 2025 26F 23F / 55% SSE 14 G 30 MPH 7100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Sun Apr 27 2025 25F 22F / 57% SSE 13 G 30 MPH 6700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Sun Apr 27 2025 25F 21F / 63% SE 12 G 29 MPH 6700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Sun Apr 27 2025 26F 20F / 71% SE 12 G 30 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Sun Apr 27 2025 27F 20F / 83% SE 10 G 27 MPH 6800 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Sun Apr 27 2025 28F 19F / 93% SSE 10 G 26 MPH 6900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Sun Apr 27 2025 26F 18F / 89% SSE 11 G 31 MPH 6400 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Sun Apr 27 2025 26F 19F / 81% S 14 G 37 MPH 6600 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Sun Apr 27 2025 28F 20F / 82% S 13 G 33 MPH 6800 FT 12:1 / 8% 0.01" / 0.1" 0.01" / 0.1" 9 03 PM Sun Apr 27 2025 30F 21F / 69% S 12 G 30 MPH 6400 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 10 04 PM Sun Apr 27 2025 30F 21F / 64% S 12 G 29 MPH 6400 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 11 05 PM Sun Apr 27 2025 30F 22F / 52% S 14 G 32 MPH 6500 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 12 06 PM Sun Apr 27 2025 29F 22F / 56% SSW 13 G 28 MPH 6500 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 13 07 PM Sun Apr 27 2025 27F 20F / 64% SW 13 G 26 MPH 6700 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 14 08 PM Sun Apr 27 2025 23F 18F / 72% S 13 G 27 MPH 6600 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 15 09 PM Sun Apr 27 2025 22F 17F / 70% S 15 G 29 MPH 6600 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 16 10 PM Sun Apr 27 2025 20F 16F / 84% SSW 12 G 25 MPH 6500 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 17 11 PM Sun Apr 27 2025 20F 16F / 76% S 12 G 25 MPH 6500 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 18 12 AM Mon Apr 28 2025 19F 15F / 89% SSW 13 G 24 MPH 6400 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 19 01 AM Mon Apr 28 2025 19F 15F / 82% SW 12 G 21 MPH 6400 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.1" 20 02 AM Mon Apr 28 2025 19F 15F / 82% SW 11 G 20 MPH 6600 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.1" 21 03 AM Mon Apr 28 2025 19F 15F / 82% SW 9 G 14 MPH 6400 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 22 04 AM Mon Apr 28 2025 19F 14F / 97% S 6 G 10 MPH 6400 FT 16:1 / 6% 0.01" / 0.2" 0.02" / 0.3" 23 05 AM Mon Apr 28 2025 18F 14F / 96% SE 7 G 11 MPH 6400 FT 16:1 / 6% 0.02" / 0.3" 0.04" / 0.6" 24 06 AM Mon Apr 28 2025 18F 14F / 98% ESE 9 G 13 MPH 6400 FT 17:1 / 6% 0.00" / 0.0" 0.04" / 0.6" 25 07 AM Mon Apr 28 2025 19F 15F / 94% E 8 G 12 MPH 6400 FT 18:1 / 6% 0.00" / 0.0" 0.04" / 0.6" 26 08 AM Mon Apr 28 2025 21F 16F / 81% E 7 G 10 MPH 6500 FT 16:1 / 6% 0.00" / 0.0" 0.04" / 0.6" 27 09 AM Mon Apr 28 2025 22F 17F / 81% ENE 7 G 10 MPH 6500 FT 16:1 / 6% 0.00" / 0.0" 0.04" / 0.6" 28 10 AM Mon Apr 28 2025 24F 18F / 86% NNW 6 G 10 MPH 6700 FT 15:1 / 7% 0.00" / 0.0" 0.04" / 0.6" 29 11 AM Mon Apr 28 2025 27F 20F / 85% NNW 7 G 11 MPH 7000 FT 15:1 / 7% 0.00" / 0.0" 0.04" / 0.6" 30 12 PM Mon Apr 28 2025 27F 20F / 92% NW 10 G 17 MPH 7400 FT 13:1 / 8% 0.00" / 0.0" 0.04" / 0.6" 31 01 PM Mon Apr 28 2025 31F 22F / 94% NW 10 G 18 MPH 7500 FT 12:1 / 8% 0.00" / 0.0" 0.04" / 0.6" 32 02 PM Mon Apr 28 2025 33F 23F / 82% NW 12 G 20 MPH 7500 FT 11:1 / 9% 0.00" / 0.0" 0.04" / 0.6" 33 03 PM Mon Apr 28 2025 34F 24F / 83% NW 10 G 21 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 34 04 PM Mon Apr 28 2025 34F 25F / 84% WNW 14 G 22 MPH 7700 FT 11:1 / 9% 0.00" / 0.0" 0.04" / 0.6" 35 05 PM Mon Apr 28 2025 34F 25F / 81% NW 15 G 25 MPH 7600 FT 11:1 / 9% 0.00" / 0.0" 0.04" / 0.6" 36 06 PM Mon Apr 28 2025 31F 24F / 87% NW 14 G 25 MPH 7600 FT 11:1 / 9% 0.00" / 0.0" 0.04" / 0.6" 37 07 PM Mon Apr 28 2025 30F 24F / 96% NW 15 G 24 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.04" / 0.6" 38 08 PM Mon Apr 28 2025 26F 22F / 94% NW 12 G 20 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 39 09 PM Mon Apr 28 2025 23F 21F / 90% NW 8 G 15 MPH 8300 FT 11:1 / 9% 0.00" / 0.0" 0.04" / 0.6" 40 10 PM Mon Apr 28 2025 23F 21F / 83% NW 8 G 11 MPH 8200 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 41 11 PM Mon Apr 28 2025 22F 20F / 82% ENE 8 G 9 MPH 8200 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 42 12 AM Tue Apr 29 2025 22F 20F / 86% NNW 9 G 11 MPH 8100 FT 11:1 / 9% 0.00" / 0.0" 0.04" / 0.6" 43 01 AM Tue Apr 29 2025 21F 20F / 87% NW 9 G 11 MPH 8100 FT 11:1 / 9% 0.00" / 0.0" 0.04" / 0.6" 44 02 AM Tue Apr 29 2025 22F 20F / 89% SW 9 G 11 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 45 03 AM Tue Apr 29 2025 23F 21F / 78% W 10 G 13 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 46 04 AM Tue Apr 29 2025 22F 20F / 80% W 9 G 12 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 47 05 AM Tue Apr 29 2025 22F 19F / 90% NW 8 G 11 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6" 48 06 AM Tue Apr 29 2025 22F 19F / 92% N 11 G 13 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.04" / 0.6"