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 18-Feb-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 Feb 18 2025 16F 8F / 94% WNW 24 G 35 MPH 4500 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 12 PM Tue Feb 18 2025 18F 9F / 99% WNW 24 G 37 MPH 4500 FT 19:1 / 5% 0.01" / 0.2" 0.01" / 0.2" 2 01 PM Tue Feb 18 2025 19F 9F / 91% WNW 23 G 34 MPH 4700 FT 21:1 / 5% 0.00" / 0.0" 0.01" / 0.2" 3 02 PM Tue Feb 18 2025 20F 10F / 99% WNW 23 G 34 MPH 4800 FT 20:1 / 5% 0.00" / 0.0" 0.01" / 0.2" 4 03 PM Tue Feb 18 2025 19F 10F / 98% WNW 24 G 37 MPH 4700 FT 19:1 / 5% 0.00" / 0.0" 0.01" / 0.2" 5 04 PM Tue Feb 18 2025 19F 10F / 100% WNW 23 G 35 MPH 4700 FT 19:1 / 5% 0.00" / 0.0" 0.01" / 0.2" 6 05 PM Tue Feb 18 2025 17F 10F / 100% WNW 25 G 36 MPH 4700 FT 17:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 7 06 PM Tue Feb 18 2025 14F 9F / 93% WNW 26 G 38 MPH 4900 FT 19:1 / 5% 0.00" / 0.0" 0.01" / 0.2" 8 07 PM Tue Feb 18 2025 13F 8F / 87% WNW 25 G 37 MPH 4900 FT 16:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 9 08 PM Tue Feb 18 2025 12F 9F / 79% WNW 25 G 36 MPH 4900 FT 15:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 10 09 PM Tue Feb 18 2025 12F 9F / 80% WNW 25 G 37 MPH 4700 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 11 10 PM Tue Feb 18 2025 12F 9F / 80% WNW 27 G 38 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 12 11 PM Tue Feb 18 2025 12F 10F / 74% WNW 26 G 39 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 13 12 AM Wed Feb 19 2025 13F 10F / 76% WNW 26 G 38 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 14 01 AM Wed Feb 19 2025 13F 9F / 84% WNW 26 G 38 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 15 02 AM Wed Feb 19 2025 12F 10F / 86% WNW 25 G 37 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 16 03 AM Wed Feb 19 2025 13F 11F / 64% WNW 25 G 35 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 17 04 AM Wed Feb 19 2025 14F 12F / 59% WNW 26 G 36 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 18 05 AM Wed Feb 19 2025 13F 12F / 64% WNW 25 G 34 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 19 06 AM Wed Feb 19 2025 14F 12F / 68% WNW 23 G 32 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 20 07 AM Wed Feb 19 2025 14F 13F / 61% WNW 22 G 31 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 21 08 AM Wed Feb 19 2025 15F 14F / 59% WNW 21 G 28 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 22 09 AM Wed Feb 19 2025 17F 15F / 51% WNW 20 G 27 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 23 10 AM Wed Feb 19 2025 20F 17F / 46% W 17 G 24 MPH 4400 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 24 11 AM Wed Feb 19 2025 24F 20F / 48% W 16 G 23 MPH 4700 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 25 12 PM Wed Feb 19 2025 27F 21F / 59% W 16 G 25 MPH 4900 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 26 01 PM Wed Feb 19 2025 27F 22F / 67% W 15 G 26 MPH 5200 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 27 02 PM Wed Feb 19 2025 26F 20F / 74% WSW 15 G 27 MPH 5400 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 28 03 PM Wed Feb 19 2025 24F 20F / 88% WSW 14 G 27 MPH 5600 FT 9:1 / 11% 0.01" / 0.1" 0.02" / 0.3" 29 04 PM Wed Feb 19 2025 24F 19F / 92% WSW 16 G 29 MPH 5800 FT 9:1 / 11% 0.04" / 0.4" 0.06" / 0.7" 30 05 PM Wed Feb 19 2025 23F 19F / 87% WSW 19 G 33 MPH 5800 FT 11:1 / 9% 0.02" / 0.2" 0.08" / 0.9" 31 06 PM Wed Feb 19 2025 24F 20F / 93% W 24 G 39 MPH 5800 FT 9:1 / 11% 0.01" / 0.1" 0.09" / 1.0" 32 07 PM Wed Feb 19 2025 23F 19F / 84% W 27 G 44 MPH 5600 FT 11:1 / 9% 0.00" / 0.0" 0.09" / 1.0" 33 08 PM Wed Feb 19 2025 23F 19F / 83% W 23 G 37 MPH 6100 FT 10:1 / 10% 0.00" / 0.0" 0.09" / 1.0" 34 09 PM Wed Feb 19 2025 22F 18F / 100% W 17 G 28 MPH 6100 FT 11:1 / 9% 0.02" / 0.2" 0.11" / 1.2" 35 10 PM Wed Feb 19 2025 23F 19F / 93% WSW 21 G 32 MPH 6700 FT 13:1 / 8% 0.02" / 0.3" 0.13" / 1.5" 36 11 PM Wed Feb 19 2025 22F 18F / 94% WSW 20 G 32 MPH 6100 FT 11:1 / 9% 0.03" / 0.3" 0.16" / 1.8" 37 12 AM Thu Feb 20 2025 22F 18F / 93% W 20 G 33 MPH 6200 FT 12:1 / 8% 0.04" / 0.5" 0.20" / 2.3" 38 01 AM Thu Feb 20 2025 23F 18F / 95% W 18 G 30 MPH 6200 FT 11:1 / 9% 0.04" / 0.4" 0.24" / 2.7" 39 02 AM Thu Feb 20 2025 23F 17F / 100% W 17 G 30 MPH 6200 FT 13:1 / 8% 0.05" / 0.6" 0.29" / 3.3" 40 03 AM Thu Feb 20 2025 23F 18F / 99% W 17 G 27 MPH 6100 FT 12:1 / 8% 0.03" / 0.4" 0.32" / 3.7" 41 04 AM Thu Feb 20 2025 22F 17F / 98% W 15 G 24 MPH 6100 FT 13:1 / 8% 0.02" / 0.3" 0.34" / 4.0" 42 05 AM Thu Feb 20 2025 21F 16F / 99% W 16 G 25 MPH 6000 FT 12:1 / 8% 0.02" / 0.2" 0.36" / 4.2" 43 06 AM Thu Feb 20 2025 22F 16F / 96% W 18 G 28 MPH 5800 FT 17:1 / 6% 0.01" / 0.2" 0.37" / 4.4" 44 07 AM Thu Feb 20 2025 21F 15F / 89% W 18 G 28 MPH 5600 FT 16:1 / 6% 0.01" / 0.2" 0.38" / 4.6" 45 08 AM Thu Feb 20 2025 20F 15F / 89% WNW 18 G 28 MPH 5100 FT 14:1 / 7% 0.01" / 0.1" 0.39" / 4.7" 46 09 AM Thu Feb 20 2025 19F 14F / 91% WNW 16 G 24 MPH 5200 FT 15:1 / 7% 0.04" / 0.6" 0.43" / 5.3" 47 10 AM Thu Feb 20 2025 21F 15F / 88% WNW 15 G 24 MPH 5400 FT 16:1 / 6% 0.00" / 0.0" 0.43" / 5.3" 48 11 AM Thu Feb 20 2025 21F 14F / 86% WNW 14 G 23 MPH 5400 FT 15:1 / 7% 0.02" / 0.3" 0.45" / 5.6"