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 11-Mar-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 Tue Mar 11 2025 32F 25F / 39% SW 14 G 24 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Tue Mar 11 2025 33F 25F / 42% SSW 13 G 25 MPH 6800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Tue Mar 11 2025 34F 26F / 41% SSW 14 G 27 MPH 7100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Tue Mar 11 2025 35F 26F / 50% SSW 13 G 28 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Tue Mar 11 2025 34F 26F / 46% SSW 15 G 31 MPH 7400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Tue Mar 11 2025 35F 26F / 47% SW 16 G 32 MPH 7400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Tue Mar 11 2025 32F 26F / 45% SW 16 G 31 MPH 7500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Tue Mar 11 2025 28F 24F / 44% SW 16 G 30 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Tue Mar 11 2025 26F 22F / 47% SW 16 G 30 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Tue Mar 11 2025 26F 22F / 48% SW 18 G 31 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Tue Mar 11 2025 25F 22F / 50% SSW 16 G 30 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Tue Mar 11 2025 24F 21F / 50% SSW 18 G 32 MPH 7200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Wed Mar 12 2025 23F 21F / 50% SSW 18 G 33 MPH 6800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Wed Mar 12 2025 23F 20F / 52% SSW 18 G 32 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Wed Mar 12 2025 22F 20F / 51% SSW 19 G 33 MPH 6400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Wed Mar 12 2025 21F 19F / 50% SSW 20 G 33 MPH 6200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Wed Mar 12 2025 21F 20F / 48% SW 18 G 31 MPH 5900 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Wed Mar 12 2025 21F 19F / 50% SW 17 G 27 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Wed Mar 12 2025 21F 20F / 51% SSW 14 G 23 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Wed Mar 12 2025 22F 19F / 54% SSW 13 G 20 MPH 5800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Wed Mar 12 2025 21F 19F / 61% S 13 G 22 MPH 6200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Wed Mar 12 2025 22F 19F / 70% SSE 14 G 24 MPH 6100 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Wed Mar 12 2025 24F 20F / 79% SSE 14 G 25 MPH 6500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Wed Mar 12 2025 26F 22F / 75% SSE 12 G 25 MPH 6500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Wed Mar 12 2025 29F 23F / 78% SSE 15 G 31 MPH 6800 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Wed Mar 12 2025 30F 25F / 68% SSE 15 G 29 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Wed Mar 12 2025 31F 25F / 61% SSE 14 G 30 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Wed Mar 12 2025 32F 26F / 68% SSE 14 G 34 MPH 7400 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Wed Mar 12 2025 32F 25F / 69% S 16 G 36 MPH 7600 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Wed Mar 12 2025 32F 24F / 79% S 17 G 38 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Wed Mar 12 2025 31F 24F / 76% S 21 G 44 MPH 7800 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Wed Mar 12 2025 28F 23F / 74% S 23 G 47 MPH 7500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Wed Mar 12 2025 26F 21F / 79% S 22 G 50 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Wed Mar 12 2025 25F 20F / 83% S 25 G 52 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Wed Mar 12 2025 25F 19F / 94% S 26 G 52 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Wed Mar 12 2025 26F 20F / 96% S 24 G 51 MPH 7100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Thu Mar 13 2025 27F 19F / 98% S 25 G 52 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Thu Mar 13 2025 27F 21F / 95% S 25 G 50 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Thu Mar 13 2025 27F 20F / 96% S 27 G 55 MPH 7100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Thu Mar 13 2025 26F 20F / 92% S 28 G 57 MPH 6900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Thu Mar 13 2025 27F 20F / 95% S 24 G 53 MPH 6900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Thu Mar 13 2025 26F 20F / 93% S 22 G 48 MPH 7000 FT 8:1 / 12% 0.01" / 0.1" 0.01" / 0.1" 42 06 AM Thu Mar 13 2025 26F 19F / 92% S 21 G 46 MPH 6800 FT 9:1 / 11% 0.02" / 0.2" 0.03" / 0.3" 43 07 AM Thu Mar 13 2025 27F 20F / 92% SSE 19 G 42 MPH 6800 FT 9:1 / 11% 0.03" / 0.3" 0.06" / 0.6" 44 08 AM Thu Mar 13 2025 26F 19F / 92% SSE 18 G 43 MPH 6800 FT 10:1 / 10% 0.08" / 0.8" 0.14" / 1.4" 45 09 AM Thu Mar 13 2025 26F 19F / 92% S 21 G 49 MPH 6700 FT 10:1 / 10% 0.09" / 0.9" 0.23" / 2.3" 46 10 AM Thu Mar 13 2025 26F 18F / 84% S 21 G 49 MPH 6600 FT 9:1 / 11% 0.08" / 0.7" 0.31" / 3.0" 47 11 AM Thu Mar 13 2025 27F 19F / 92% S 22 G 48 MPH 6700 FT 9:1 / 11% 0.06" / 0.5" 0.37" / 3.5" 48 12 PM Thu Mar 13 2025 28F 19F / 88% S 20 G 43 MPH 6600 FT 9:1 / 11% 0.05" / 0.4" 0.42" / 3.9"