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 06Z 30-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 AM Wed Apr 30 2025 30F 26F / 66% W 15 G 23 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Wed Apr 30 2025 29F 26F / 71% WNW 17 G 25 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Wed Apr 30 2025 29F 26F / 69% WNW 18 G 28 MPH 9000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Wed Apr 30 2025 29F 26F / 73% WNW 20 G 30 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Wed Apr 30 2025 30F 26F / 72% WNW 22 G 32 MPH 9100 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Wed Apr 30 2025 30F 25F / 78% W 21 G 31 MPH 9300 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Wed Apr 30 2025 28F 24F / 100% W 16 G 25 MPH 9300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Wed Apr 30 2025 28F 24F / 96% W 17 G 27 MPH 9300 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Wed Apr 30 2025 30F 26F / 87% WSW 19 G 31 MPH 9200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Wed Apr 30 2025 30F 25F / 100% W 19 G 28 MPH 9000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Wed Apr 30 2025 31F 25F / 100% W 13 G 20 MPH 8600 FT 9:1 / 11% 0.11" / 1.0" 0.11" / 1.0" 11 11 AM Wed Apr 30 2025 31F 25F / 100% WNW 13 G 22 MPH 8600 FT 10:1 / 10% 0.04" / 0.4" 0.15" / 1.4" 12 12 PM Wed Apr 30 2025 32F 25F / 96% W 15 G 23 MPH 8500 FT 9:1 / 11% 0.01" / 0.1" 0.16" / 1.5" 13 01 PM Wed Apr 30 2025 34F 26F / 95% WNW 16 G 27 MPH 8400 FT 8:1 / 12% 0.00" / 0.0" 0.16" / 1.5" 14 02 PM Wed Apr 30 2025 36F 27F / 95% WNW 15 G 24 MPH 8300 FT 8:1 / 12% 0.00" / 0.0" 0.16" / 1.5" 15 03 PM Wed Apr 30 2025 37F 28F / 89% WNW 14 G 22 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 16 04 PM Wed Apr 30 2025 37F 28F / 84% WNW 14 G 24 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 17 05 PM Wed Apr 30 2025 37F 28F / 81% WNW 15 G 23 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 18 06 PM Wed Apr 30 2025 35F 27F / 83% WNW 17 G 26 MPH 8400 FT 8:1 / 12% 0.00" / 0.0" 0.16" / 1.5" 19 07 PM Wed Apr 30 2025 32F 26F / 86% WNW 15 G 22 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 20 08 PM Wed Apr 30 2025 30F 24F / 93% WNW 16 G 23 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 21 09 PM Wed Apr 30 2025 28F 24F / 89% WNW 17 G 22 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 22 10 PM Wed Apr 30 2025 26F 23F / 86% WNW 16 G 21 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 23 11 PM Wed Apr 30 2025 26F 23F / 83% S 17 G 23 MPH 8200 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 24 12 AM Thu May 01 2025 25F 22F / 83% SSE 17 G 21 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 25 01 AM Thu May 01 2025 25F 22F / 82% W 16 G 21 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 26 02 AM Thu May 01 2025 24F 21F / 82% E 16 G 20 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 27 03 AM Thu May 01 2025 24F 21F / 80% NW 15 G 20 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 28 04 AM Thu May 01 2025 23F 21F / 74% NW 14 G 19 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 29 05 AM Thu May 01 2025 23F 21F / 76% ESE 14 G 19 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 30 06 AM Thu May 01 2025 23F 21F / 76% NNW 15 G 21 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 31 07 AM Thu May 01 2025 23F 21F / 74% NNW 15 G 20 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 32 08 AM Thu May 01 2025 25F 22F / 67% N 15 G 21 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 33 09 AM Thu May 01 2025 27F 24F / 63% N 13 G 19 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 34 10 AM Thu May 01 2025 29F 25F / 61% N 11 G 19 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 35 11 AM Thu May 01 2025 32F 26F / 65% N 9 G 15 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 36 12 PM Thu May 01 2025 34F 27F / 62% N 9 G 15 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 37 01 PM Thu May 01 2025 37F 30F / 61% NNW 7 G 13 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 38 02 PM Thu May 01 2025 40F 32F / 56% NNW 7 G 11 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 39 03 PM Thu May 01 2025 42F 33F / 59% NW 11 G 17 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 40 04 PM Thu May 01 2025 42F 34F / 49% NNW 9 G 16 MPH 8600 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 41 05 PM Thu May 01 2025 42F 34F / 65% WNW 9 G 16 MPH 8800 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 42 06 PM Thu May 01 2025 40F 34F / 62% WNW 9 G 15 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 43 07 PM Thu May 01 2025 38F 33F / 53% WNW 9 G 13 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 44 08 PM Thu May 01 2025 34F 32F / 65% NW 11 G 16 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 45 09 PM Thu May 01 2025 32F 30F / 63% NNW 11 G 17 MPH 9100 FT 10:1 / 10% 0.00" / 0.0" 0.16" / 1.5" 46 10 PM Thu May 01 2025 32F 31F / 56% NE 11 G 19 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 47 11 PM Thu May 01 2025 31F 30F / 61% E 13 G 20 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5" 48 12 AM Fri May 02 2025 31F 30F / 62% E 12 G 19 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.16" / 1.5"