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 19-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 12 PM Mon May 19 2025 26F 18F / 88% NW 16 G 27 MPH 5700 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Mon May 19 2025 26F 19F / 85% NW 9 G 16 MPH 5600 FT 14:1 / 7% 0.01" / 0.1" 0.01" / 0.1" 2 02 PM Mon May 19 2025 31F 22F / 76% NW 6 G 11 MPH 5900 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.1" 3 03 PM Mon May 19 2025 32F 23F / 84% NW 6 G 11 MPH 6500 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.1" 4 04 PM Mon May 19 2025 32F 24F / 82% WNW 7 G 14 MPH 6900 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 5 05 PM Mon May 19 2025 32F 23F / 80% WNW 10 G 17 MPH 7100 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 6 06 PM Mon May 19 2025 30F 22F / 90% WNW 12 G 18 MPH 7100 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.1" 7 07 PM Mon May 19 2025 28F 21F / 100% WNW 13 G 20 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 8 08 PM Mon May 19 2025 26F 21F / 78% WNW 21 G 29 MPH 7100 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 9 09 PM Mon May 19 2025 26F 22F / 57% WNW 27 G 41 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 10 10 PM Mon May 19 2025 27F 22F / 57% WNW 30 G 43 MPH 6900 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 11 11 PM Mon May 19 2025 28F 23F / 62% WNW 31 G 44 MPH 6900 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 12 12 AM Tue May 20 2025 28F 23F / 59% WNW 31 G 45 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 13 01 AM Tue May 20 2025 28F 24F / 62% WNW 31 G 44 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 14 02 AM Tue May 20 2025 28F 24F / 66% WNW 30 G 43 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 15 03 AM Tue May 20 2025 28F 24F / 68% WNW 30 G 42 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 16 04 AM Tue May 20 2025 28F 24F / 73% WNW 28 G 42 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 17 05 AM Tue May 20 2025 28F 23F / 77% WNW 27 G 39 MPH 7100 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 18 06 AM Tue May 20 2025 27F 23F / 75% WNW 26 G 38 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 19 07 AM Tue May 20 2025 27F 24F / 79% WNW 24 G 37 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 20 08 AM Tue May 20 2025 29F 25F / 82% WNW 20 G 29 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 21 09 AM Tue May 20 2025 30F 25F / 81% W 21 G 31 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 22 10 AM Tue May 20 2025 32F 26F / 75% W 17 G 26 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 23 11 AM Tue May 20 2025 36F 27F / 74% W 19 G 30 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 24 12 PM Tue May 20 2025 38F 28F / 71% W 19 G 31 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 25 01 PM Tue May 20 2025 40F 29F / 67% W 18 G 31 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 26 02 PM Tue May 20 2025 43F 31F / 56% W 19 G 32 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 27 03 PM Tue May 20 2025 44F 33F / 62% W 18 G 31 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 28 04 PM Tue May 20 2025 44F 33F / 67% W 19 G 32 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 29 05 PM Tue May 20 2025 43F 33F / 65% W 20 G 34 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 30 06 PM Tue May 20 2025 41F 33F / 66% W 19 G 33 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 31 07 PM Tue May 20 2025 39F 33F / 67% W 19 G 32 MPH 9600 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 32 08 PM Tue May 20 2025 36F 32F / 70% WSW 21 G 35 MPH 9700 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 33 09 PM Tue May 20 2025 35F 32F / 56% W 23 G 35 MPH 9600 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 34 10 PM Tue May 20 2025 35F 31F / 55% W 23 G 34 MPH 9500 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.1" 35 11 PM Tue May 20 2025 34F 31F / 51% W 25 G 38 MPH 9500 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.1" 36 12 AM Wed May 21 2025 34F 31F / 49% W 25 G 41 MPH 9300 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 37 01 AM Wed May 21 2025 35F 33F / 51% W 28 G 42 MPH 9100 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 38 02 AM Wed May 21 2025 34F 32F / 54% W 28 G 42 MPH 9200 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 39 03 AM Wed May 21 2025 33F 31F / 60% W 26 G 40 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 40 04 AM Wed May 21 2025 33F 31F / 60% W 28 G 41 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.1" 41 05 AM Wed May 21 2025 32F 30F / 61% W 27 G 40 MPH 8200 FT 7:1 / 14% 0.00" / 0.0" 0.01" / 0.1" 42 06 AM Wed May 21 2025 31F 29F / 73% W 28 G 40 MPH 7800 FT 7:1 / 14% 0.00" / 0.0" 0.01" / 0.1" 43 07 AM Wed May 21 2025 31F 29F / 67% W 29 G 41 MPH 7300 FT 6:1 / 17% 0.00" / 0.0" 0.01" / 0.1" 44 08 AM Wed May 21 2025 32F 29F / 60% WNW 29 G 43 MPH 6900 FT 6:1 / 17% 0.00" / 0.0" 0.01" / 0.1" 45 09 AM Wed May 21 2025 32F 30F / 59% WNW 29 G 44 MPH 6800 FT 7:1 / 14% 0.00" / 0.0" 0.01" / 0.1" 46 10 AM Wed May 21 2025 34F 29F / 61% WNW 27 G 40 MPH 6900 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 47 11 AM Wed May 21 2025 37F 30F / 61% WNW 24 G 37 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 48 12 PM Wed May 21 2025 40F 31F / 55% W 22 G 35 MPH 7400 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1"