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 06Z 26-Dec-2024 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 PM Wed Dec 25 2024 16F 14F / 70% W 15 G 18 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 1 12 AM Thu Dec 26 2024 16F 14F / 66% W 17 G 23 MPH 4500 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 2 01 AM Thu Dec 26 2024 16F 15F / 61% W 18 G 26 MPH 4500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 02 AM Thu Dec 26 2024 18F 17F / 51% W 19 G 25 MPH 4500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 03 AM Thu Dec 26 2024 19F 18F / 50% WSW 19 G 27 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 5 04 AM Thu Dec 26 2024 20F 18F / 53% W 22 G 32 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 05 AM Thu Dec 26 2024 21F 18F / 51% WSW 22 G 34 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 7 06 AM Thu Dec 26 2024 21F 19F / 57% W 23 G 36 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 8 07 AM Thu Dec 26 2024 21F 19F / 61% W 25 G 37 MPH ≤ KSLC 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 9 08 AM Thu Dec 26 2024 21F 18F / 89% W 24 G 38 MPH ≤ KSLC 7:1 / 14% 0.01" / 0.1" 0.01" / 0.1" 10 09 AM Thu Dec 26 2024 20F 18F / 93% W 27 G 41 MPH ≤ KSLC 8:1 / 12% 0.04" / 0.3" 0.05" / 0.4" 11 10 AM Thu Dec 26 2024 22F 17F / 97% W 30 G 49 MPH 4500 FT 8:1 / 12% 0.07" / 0.6" 0.12" / 1.0" 12 11 AM Thu Dec 26 2024 25F 17F / 97% WNW 33 G 50 MPH 4600 FT 9:1 / 11% 0.06" / 0.5" 0.18" / 1.5" 13 12 PM Thu Dec 26 2024 26F 17F / 93% WNW 29 G 44 MPH 4800 FT 10:1 / 10% 0.01" / 0.1" 0.19" / 1.6" 14 01 PM Thu Dec 26 2024 26F 16F / 93% WNW 30 G 47 MPH 5000 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 15 02 PM Thu Dec 26 2024 26F 16F / 93% WNW 30 G 46 MPH 5200 FT 10:1 / 10% 0.00" / 0.0" 0.19" / 1.6" 16 03 PM Thu Dec 26 2024 26F 16F / 84% W 29 G 45 MPH 5900 FT 11:1 / 9% 0.00" / 0.0" 0.19" / 1.6" 17 04 PM Thu Dec 26 2024 23F 15F / 93% WSW 22 G 35 MPH 6100 FT 10:1 / 10% 0.01" / 0.1" 0.20" / 1.7" 18 05 PM Thu Dec 26 2024 21F 14F / 96% W 29 G 48 MPH 6300 FT 11:1 / 9% 0.06" / 0.7" 0.26" / 2.4" 19 06 PM Thu Dec 26 2024 22F 14F / 92% W 34 G 54 MPH 6400 FT 11:1 / 9% 0.03" / 0.3" 0.29" / 2.7" 20 07 PM Thu Dec 26 2024 20F 12F / 97% W 31 G 50 MPH 6200 FT 12:1 / 8% 0.16" / 1.9" 0.45" / 4.6" 21 08 PM Thu Dec 26 2024 18F 11F / 95% W 30 G 47 MPH 5600 FT 15:1 / 7% 0.04" / 0.6" 0.49" / 5.2" 22 09 PM Thu Dec 26 2024 16F 10F / 96% W 29 G 46 MPH 5100 FT 13:1 / 8% 0.08" / 1.0" 0.57" / 6.2" 23 10 PM Thu Dec 26 2024 15F 8F / 94% WNW 30 G 47 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.57" / 6.2" 24 11 PM Thu Dec 26 2024 14F 8F / 93% WNW 29 G 45 MPH 5000 FT 18:1 / 6% 0.00" / 0.0" 0.57" / 6.2" 25 12 AM Fri Dec 27 2024 15F 8F / 91% WNW 30 G 42 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.57" / 6.2" 26 01 AM Fri Dec 27 2024 12F 9F / 81% WNW 28 G 43 MPH 4800 FT 15:1 / 7% 0.00" / 0.0" 0.57" / 6.2" 27 02 AM Fri Dec 27 2024 13F 10F / 68% W 28 G 41 MPH 4900 FT 11:1 / 9% 0.00" / 0.0" 0.57" / 6.2" 28 03 AM Fri Dec 27 2024 13F 10F / 75% W 26 G 40 MPH 4900 FT 11:1 / 9% 0.00" / 0.0" 0.57" / 6.2" 29 04 AM Fri Dec 27 2024 14F 11F / 82% WSW 23 G 36 MPH 4500 FT 13:1 / 8% 0.00" / 0.0" 0.57" / 6.2" 30 05 AM Fri Dec 27 2024 15F 11F / 88% WSW 22 G 34 MPH 4400 FT 10:1 / 10% 0.00" / 0.0" 0.57" / 6.2" 31 06 AM Fri Dec 27 2024 17F 12F / 100% WSW 19 G 29 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.57" / 6.2" 32 07 AM Fri Dec 27 2024 19F 14F / 95% WSW 19 G 31 MPH ≤ KSLC 13:1 / 8% 0.01" / 0.1" 0.58" / 6.3" 33 08 AM Fri Dec 27 2024 20F 15F / 90% SW 21 G 36 MPH ≤ KSLC 11:1 / 9% 0.02" / 0.2" 0.60" / 6.5" 34 09 AM Fri Dec 27 2024 22F 17F / 92% SW 24 G 42 MPH 4600 FT 10:1 / 10% 0.03" / 0.3" 0.63" / 6.8" 35 10 AM Fri Dec 27 2024 23F 17F / 88% SW 24 G 41 MPH 5500 FT 9:1 / 11% 0.04" / 0.4" 0.67" / 7.2" 36 11 AM Fri Dec 27 2024 25F 19F / 89% WSW 25 G 42 MPH 5800 FT 9:1 / 11% 0.05" / 0.4" 0.72" / 7.6" 37 12 PM Fri Dec 27 2024 26F 19F / 93% WSW 29 G 47 MPH 6600 FT 8:1 / 12% 0.08" / 0.6" 0.80" / 8.2" 38 01 PM Fri Dec 27 2024 27F 18F / 96% W 33 G 58 MPH 7100 FT 8:1 / 12% 0.16" / 1.3" 0.96" / 9.5" 39 02 PM Fri Dec 27 2024 27F 18F / 97% W 35 G 56 MPH 7100 FT 10:1 / 10% 0.15" / 1.5" 1.11" / 11.0" 40 03 PM Fri Dec 27 2024 27F 16F / 91% W 33 G 52 MPH 7000 FT 11:1 / 9% 0.07" / 0.8" 1.18" / 11.8" 41 04 PM Fri Dec 27 2024 27F 15F / 96% WNW 38 G 58 MPH 7000 FT 11:1 / 9% 0.03" / 0.3" 1.21" / 12.1" 42 05 PM Fri Dec 27 2024 24F 16F / 91% WNW 37 G 59 MPH 6800 FT 11:1 / 9% 0.01" / 0.1" 1.22" / 12.2" 43 06 PM Fri Dec 27 2024 24F 16F / 87% WNW 34 G 56 MPH 6900 FT 10:1 / 10% 0.04" / 0.4" 1.26" / 12.6" 44 07 PM Fri Dec 27 2024 23F 16F / 89% WNW 37 G 57 MPH 6500 FT 11:1 / 9% 0.02" / 0.2" 1.28" / 12.8" 45 08 PM Fri Dec 27 2024 22F 16F / 92% WNW 34 G 51 MPH 6700 FT 12:1 / 8% 0.00" / 0.0" 1.28" / 12.8" 46 09 PM Fri Dec 27 2024 22F 16F / 89% WNW 34 G 51 MPH 6800 FT 10:1 / 10% 0.00" / 0.0" 1.28" / 12.8" 47 10 PM Fri Dec 27 2024 22F 16F / 97% WNW 29 G 43 MPH 6900 FT 9:1 / 11% 0.00" / 0.0" 1.28" / 12.8" 48 11 PM Fri Dec 27 2024 22F 17F / 94% WNW 30 G 45 MPH 7200 FT 9:1 / 11% 0.01" / 0.1" 1.29" / 12.9"