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 04-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 11 AM Tue Mar 04 2025 22F 13F / 97% WNW 22 G 34 MPH 5900 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 12 PM Tue Mar 04 2025 23F 14F / 90% WNW 19 G 30 MPH 5700 FT 21:1 / 5% 0.01" / 0.2" 0.01" / 0.2" 2 01 PM Tue Mar 04 2025 24F 15F / 91% WNW 20 G 31 MPH 5800 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 3 02 PM Tue Mar 04 2025 25F 15F / 96% WNW 16 G 24 MPH 5900 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 4 03 PM Tue Mar 04 2025 24F 15F / 100% WNW 19 G 28 MPH 5800 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 5 04 PM Tue Mar 04 2025 24F 16F / 96% WNW 19 G 29 MPH 5900 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 6 05 PM Tue Mar 04 2025 22F 16F / 91% WNW 20 G 30 MPH 6000 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 7 06 PM Tue Mar 04 2025 20F 15F / 89% WNW 21 G 31 MPH 6000 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 8 07 PM Tue Mar 04 2025 18F 14F / 81% WNW 23 G 33 MPH 5900 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 9 08 PM Tue Mar 04 2025 17F 14F / 74% WNW 23 G 34 MPH 5800 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 10 09 PM Tue Mar 04 2025 16F 13F / 81% WNW 22 G 32 MPH 5800 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 11 10 PM Tue Mar 04 2025 17F 14F / 84% WNW 23 G 34 MPH 5800 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 12 11 PM Tue Mar 04 2025 17F 14F / 82% WNW 24 G 35 MPH 5800 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 13 12 AM Wed Mar 05 2025 17F 14F / 85% WNW 25 G 36 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 14 01 AM Wed Mar 05 2025 18F 15F / 79% WNW 24 G 37 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 15 02 AM Wed Mar 05 2025 18F 15F / 80% WNW 24 G 35 MPH 5600 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 16 03 AM Wed Mar 05 2025 18F 15F / 77% WNW 22 G 32 MPH 5500 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 17 04 AM Wed Mar 05 2025 19F 15F / 78% WNW 20 G 29 MPH 5500 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 18 05 AM Wed Mar 05 2025 18F 15F / 81% W 18 G 26 MPH 5600 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 19 06 AM Wed Mar 05 2025 18F 15F / 74% W 16 G 24 MPH 5600 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 20 07 AM Wed Mar 05 2025 19F 16F / 71% W 15 G 23 MPH 5600 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 21 08 AM Wed Mar 05 2025 20F 16F / 71% WSW 17 G 25 MPH 5600 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 22 09 AM Wed Mar 05 2025 21F 17F / 77% WSW 14 G 22 MPH 5500 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 23 10 AM Wed Mar 05 2025 24F 19F / 76% SW 14 G 24 MPH 5500 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 24 11 AM Wed Mar 05 2025 26F 20F / 79% SSW 15 G 26 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 25 12 PM Wed Mar 05 2025 28F 21F / 79% S 15 G 29 MPH 6100 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 26 01 PM Wed Mar 05 2025 28F 21F / 80% S 15 G 33 MPH 6400 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 27 02 PM Wed Mar 05 2025 27F 20F / 89% S 15 G 35 MPH 6600 FT 8:1 / 12% 0.01" / 0.1" 0.02" / 0.3" 28 03 PM Wed Mar 05 2025 25F 20F / 90% S 15 G 34 MPH 6700 FT 7:1 / 14% 0.03" / 0.2" 0.05" / 0.5" 29 04 PM Wed Mar 05 2025 24F 20F / 92% S 18 G 38 MPH 7000 FT 7:1 / 14% 0.04" / 0.3" 0.09" / 0.8" 30 05 PM Wed Mar 05 2025 26F 20F / 94% S 19 G 40 MPH 7000 FT 7:1 / 14% 0.04" / 0.3" 0.13" / 1.1" 31 06 PM Wed Mar 05 2025 26F 20F / 95% S 19 G 39 MPH 7200 FT 8:1 / 12% 0.06" / 0.5" 0.19" / 1.6" 32 07 PM Wed Mar 05 2025 27F 21F / 97% S 20 G 43 MPH 7300 FT 9:1 / 11% 0.09" / 0.8" 0.28" / 2.4" 33 08 PM Wed Mar 05 2025 27F 21F / 95% S 20 G 43 MPH 7300 FT 10:1 / 10% 0.10" / 1.0" 0.38" / 3.4" 34 09 PM Wed Mar 05 2025 28F 20F / 99% S 20 G 43 MPH 7200 FT 9:1 / 11% 0.10" / 0.9" 0.48" / 4.3" 35 10 PM Wed Mar 05 2025 28F 21F / 98% S 21 G 45 MPH 7000 FT 8:1 / 12% 0.10" / 0.8" 0.58" / 5.1" 36 11 PM Wed Mar 05 2025 27F 20F / 96% S 23 G 45 MPH 7000 FT 8:1 / 12% 0.10" / 0.8" 0.68" / 5.9" 37 12 AM Thu Mar 06 2025 28F 21F / 90% S 23 G 48 MPH 6900 FT 7:1 / 14% 0.11" / 0.8" 0.79" / 6.7" 38 01 AM Thu Mar 06 2025 27F 21F / 94% S 21 G 44 MPH 6900 FT 7:1 / 14% 0.13" / 0.9" 0.92" / 7.6" 39 02 AM Thu Mar 06 2025 26F 20F / 92% S 24 G 47 MPH 6800 FT 8:1 / 12% 0.12" / 1.0" 1.04" / 8.6" 40 03 AM Thu Mar 06 2025 27F 19F / 88% S 22 G 45 MPH 6800 FT 9:1 / 11% 0.11" / 1.0" 1.15" / 9.6" 41 04 AM Thu Mar 06 2025 27F 19F / 96% S 21 G 49 MPH 6700 FT 9:1 / 11% 0.08" / 0.7" 1.23" / 10.3" 42 05 AM Thu Mar 06 2025 27F 19F / 87% SSE 22 G 49 MPH 6200 FT 12:1 / 8% 0.06" / 0.7" 1.29" / 11.0" 43 06 AM Thu Mar 06 2025 25F 18F / 85% SSE 22 G 48 MPH 6200 FT 11:1 / 9% 0.05" / 0.6" 1.34" / 11.6" 44 07 AM Thu Mar 06 2025 21F 14F / 79% S 20 G 48 MPH 5700 FT 13:1 / 8% 0.09" / 1.2" 1.43" / 12.8" 45 08 AM Thu Mar 06 2025 20F 11F / 91% S 20 G 41 MPH 5200 FT 12:1 / 8% 0.01" / 0.1" 1.44" / 12.9" 46 09 AM Thu Mar 06 2025 20F 11F / 90% SSW 19 G 40 MPH 5200 FT 14:1 / 7% 0.09" / 1.3" 1.53" / 14.2" 47 10 AM Thu Mar 06 2025 23F 14F / 94% WSW 18 G 30 MPH 5000 FT 14:1 / 7% 0.08" / 1.1" 1.61" / 15.3" 48 11 AM Thu Mar 06 2025 24F 15F / 89% SW 16 G 31 MPH 5300 FT 13:1 / 8% 0.10" / 1.3" 1.71" / 16.6"