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 28-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 Mon Apr 28 2025 29F 21F / 91% E 3 G 7 MPH 7400 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Mon Apr 28 2025 32F 24F / 94% NNW 5 G 8 MPH 7700 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Mon Apr 28 2025 33F 25F / 83% ESE 5 G 11 MPH 7600 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Mon Apr 28 2025 35F 25F / 87% WNW 10 G 17 MPH 7700 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Mon Apr 28 2025 34F 25F / 92% WNW 9 G 15 MPH 7700 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Mon Apr 28 2025 33F 25F / 90% NW 12 G 20 MPH 7900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Mon Apr 28 2025 31F 24F / 97% WNW 13 G 22 MPH 7700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Mon Apr 28 2025 30F 23F / 97% WNW 12 G 19 MPH 7700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Mon Apr 28 2025 27F 22F / 100% NW 10 G 15 MPH 7500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Mon Apr 28 2025 25F 21F / 79% WNW 10 G 13 MPH 7700 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Mon Apr 28 2025 24F 21F / 86% WNW 9 G 13 MPH 7700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Mon Apr 28 2025 23F 21F / 71% NW 8 G 12 MPH 7800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Tue Apr 29 2025 23F 21F / 66% WNW 7 G 11 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Tue Apr 29 2025 22F 21F / 61% NNW 7 G 10 MPH 7900 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Tue Apr 29 2025 22F 22F / 57% SE 7 G 8 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Tue Apr 29 2025 22F 21F / 58% NW 6 G 8 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Tue Apr 29 2025 23F 22F / 62% NW 9 G 11 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Tue Apr 29 2025 23F 22F / 63% NW 8 G 11 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Tue Apr 29 2025 23F 21F / 64% NE 8 G 11 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Tue Apr 29 2025 23F 21F / 66% ENE 9 G 11 MPH 7700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Tue Apr 29 2025 24F 22F / 70% E 9 G 13 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Tue Apr 29 2025 27F 24F / 70% SE 7 G 10 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Tue Apr 29 2025 29F 24F / 76% W 6 G 8 MPH 7800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Tue Apr 29 2025 32F 25F / 77% WNW 5 G 8 MPH 7900 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Tue Apr 29 2025 35F 27F / 74% NW 4 G 7 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Tue Apr 29 2025 37F 29F / 80% NW 5 G 10 MPH 8500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Tue Apr 29 2025 37F 30F / 87% WNW 7 G 12 MPH 8400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Tue Apr 29 2025 39F 31F / 70% WNW 8 G 16 MPH 8400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Tue Apr 29 2025 40F 31F / 68% WNW 8 G 16 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Tue Apr 29 2025 38F 30F / 68% WNW 9 G 17 MPH 8300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Tue Apr 29 2025 35F 30F / 65% WNW 9 G 18 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Tue Apr 29 2025 33F 28F / 72% WNW 10 G 18 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Tue Apr 29 2025 30F 26F / 69% W 11 G 16 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Tue Apr 29 2025 29F 26F / 53% W 12 G 20 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Tue Apr 29 2025 29F 26F / 44% W 11 G 18 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Tue Apr 29 2025 28F 26F / 50% WNW 14 G 20 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Wed Apr 30 2025 27F 24F / 72% WNW 14 G 23 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Wed Apr 30 2025 28F 26F / 74% WNW 15 G 23 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Wed Apr 30 2025 27F 24F / 80% WNW 15 G 22 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Wed Apr 30 2025 26F 23F / 89% WNW 16 G 23 MPH 9200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Wed Apr 30 2025 26F 23F / 94% WNW 15 G 22 MPH 9100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Wed Apr 30 2025 28F 24F / 93% W 17 G 25 MPH 9000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Wed Apr 30 2025 28F 25F / 97% W 19 G 29 MPH 8900 FT 7:1 / 14% 0.01" / 0.1" 0.01" / 0.1" 43 07 AM Wed Apr 30 2025 29F 25F / 100% W 19 G 28 MPH 8800 FT 7:1 / 14% 0.01" / 0.1" 0.02" / 0.2" 44 08 AM Wed Apr 30 2025 29F 25F / 100% WNW 18 G 27 MPH 8800 FT 8:1 / 12% 0.03" / 0.2" 0.05" / 0.4" 45 09 AM Wed Apr 30 2025 29F 25F / 100% WNW 19 G 27 MPH 8200 FT 8:1 / 12% 0.01" / 0.1" 0.06" / 0.5" 46 10 AM Wed Apr 30 2025 30F 25F / 99% WNW 16 G 26 MPH 8100 FT 8:1 / 12% 0.01" / 0.1" 0.07" / 0.6" 47 11 AM Wed Apr 30 2025 30F 25F / 95% W 15 G 23 MPH 8100 FT 10:1 / 10% 0.01" / 0.1" 0.08" / 0.7" 48 12 PM Wed Apr 30 2025 31F 25F / 95% W 12 G 19 MPH 8100 FT 10:1 / 10% 0.01" / 0.1" 0.09" / 0.8"