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 12Z 21-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 06 AM Fri Mar 21 2025 15F 11F / 77% WNW 27 G 41 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Fri Mar 21 2025 15F 10F / 74% WNW 26 G 39 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Fri Mar 21 2025 15F 11F / 76% WNW 25 G 36 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Fri Mar 21 2025 16F 12F / 77% WNW 24 G 36 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Fri Mar 21 2025 18F 14F / 73% WNW 24 G 36 MPH 4700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Fri Mar 21 2025 20F 14F / 74% WNW 21 G 32 MPH 5100 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Fri Mar 21 2025 22F 16F / 76% WNW 17 G 27 MPH 5200 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Fri Mar 21 2025 24F 17F / 77% W 14 G 21 MPH 5300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Fri Mar 21 2025 25F 18F / 74% W 12 G 21 MPH 5400 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Fri Mar 21 2025 27F 18F / 72% WSW 12 G 20 MPH 5700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Fri Mar 21 2025 26F 19F / 76% WSW 12 G 21 MPH 6000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Fri Mar 21 2025 25F 18F / 80% WSW 12 G 20 MPH 6100 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Fri Mar 21 2025 25F 17F / 82% WSW 17 G 26 MPH 6200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Fri Mar 21 2025 24F 17F / 79% WSW 20 G 33 MPH 6300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Fri Mar 21 2025 22F 17F / 84% WSW 23 G 36 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Fri Mar 21 2025 21F 17F / 91% WSW 25 G 38 MPH 6400 FT 7:1 / 14% 0.01" / 0.1" 0.01" / 0.1" 16 10 PM Fri Mar 21 2025 21F 17F / 92% WSW 24 G 39 MPH 6500 FT 7:1 / 14% 0.03" / 0.2" 0.04" / 0.3" 17 11 PM Fri Mar 21 2025 22F 18F / 95% WSW 29 G 49 MPH 6900 FT 7:1 / 14% 0.05" / 0.4" 0.09" / 0.7" 18 12 AM Sat Mar 22 2025 23F 19F / 95% W 29 G 45 MPH 7200 FT 8:1 / 12% 0.10" / 0.8" 0.19" / 1.5" 19 01 AM Sat Mar 22 2025 24F 18F / 99% W 25 G 41 MPH 7200 FT 9:1 / 11% 0.08" / 0.7" 0.27" / 2.2" 20 02 AM Sat Mar 22 2025 24F 18F / 100% W 24 G 37 MPH 7200 FT 11:1 / 9% 0.03" / 0.3" 0.30" / 2.5" 21 03 AM Sat Mar 22 2025 24F 18F / 99% W 24 G 38 MPH 7100 FT 9:1 / 11% 0.07" / 0.6" 0.37" / 3.1" 22 04 AM Sat Mar 22 2025 24F 18F / 100% W 26 G 42 MPH 7200 FT 10:1 / 10% 0.06" / 0.6" 0.43" / 3.7" 23 05 AM Sat Mar 22 2025 24F 18F / 100% W 25 G 40 MPH 7200 FT 12:1 / 8% 0.04" / 0.5" 0.47" / 4.2" 24 06 AM Sat Mar 22 2025 24F 18F / 100% W 26 G 40 MPH 7200 FT 11:1 / 9% 0.01" / 0.1" 0.48" / 4.3" 25 07 AM Sat Mar 22 2025 23F 17F / 100% W 26 G 40 MPH 7100 FT 10:1 / 10% 0.05" / 0.5" 0.53" / 4.8" 26 08 AM Sat Mar 22 2025 23F 18F / 100% W 26 G 40 MPH 7200 FT 10:1 / 10% 0.10" / 1.0" 0.63" / 5.8" 27 09 AM Sat Mar 22 2025 24F 18F / 100% W 30 G 47 MPH 7100 FT 10:1 / 10% 0.11" / 1.1" 0.74" / 6.9" 28 10 AM Sat Mar 22 2025 24F 16F / 100% W 29 G 46 MPH 6800 FT 11:1 / 9% 0.10" / 1.1" 0.84" / 8.0" 29 11 AM Sat Mar 22 2025 25F 17F / 99% W 27 G 44 MPH 7000 FT 11:1 / 9% 0.09" / 1.0" 0.93" / 9.0" 30 12 PM Sat Mar 22 2025 26F 17F / 95% W 28 G 44 MPH 7000 FT 9:1 / 11% 0.04" / 0.4" 0.97" / 9.4" 31 01 PM Sat Mar 22 2025 26F 17F / 96% W 28 G 44 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.97" / 9.4" 32 02 PM Sat Mar 22 2025 27F 17F / 95% W 28 G 45 MPH 7100 FT 9:1 / 11% 0.00" / 0.0" 0.97" / 9.4" 33 03 PM Sat Mar 22 2025 27F 17F / 96% W 27 G 45 MPH 7200 FT 9:1 / 11% 0.00" / 0.0" 0.97" / 9.4" 34 04 PM Sat Mar 22 2025 27F 17F / 95% W 30 G 45 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.97" / 9.4" 35 05 PM Sat Mar 22 2025 28F 18F / 96% W 28 G 46 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.97" / 9.4" 36 06 PM Sat Mar 22 2025 26F 18F / 98% W 25 G 40 MPH 7000 FT 11:1 / 9% 0.10" / 1.1" 1.07" / 10.5" 37 07 PM Sat Mar 22 2025 26F 18F / 97% WNW 28 G 44 MPH 7000 FT 11:1 / 9% 0.01" / 0.1" 1.08" / 10.6" 38 08 PM Sat Mar 22 2025 24F 18F / 97% WNW 29 G 43 MPH 7000 FT 10:1 / 10% 0.00" / 0.0" 1.08" / 10.6" 39 09 PM Sat Mar 22 2025 23F 18F / 97% WNW 29 G 44 MPH 6900 FT 10:1 / 10% 0.00" / 0.0" 1.08" / 10.6" 40 10 PM Sat Mar 22 2025 23F 18F / 98% WNW 30 G 45 MPH 6700 FT 10:1 / 10% 0.00" / 0.0" 1.08" / 10.6" 41 11 PM Sat Mar 22 2025 23F 18F / 97% WNW 29 G 44 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 1.08" / 10.6" 42 12 AM Sun Mar 23 2025 23F 19F / 97% WNW 30 G 45 MPH 6500 FT 9:1 / 11% 0.00" / 0.0" 1.08" / 10.6" 43 01 AM Sun Mar 23 2025 23F 19F / 94% WNW 28 G 45 MPH 6400 FT 8:1 / 12% 0.00" / 0.0" 1.08" / 10.6" 44 02 AM Sun Mar 23 2025 22F 19F / 93% WNW 30 G 45 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 1.08" / 10.6" 45 03 AM Sun Mar 23 2025 22F 18F / 95% WNW 27 G 43 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 1.08" / 10.6" 46 04 AM Sun Mar 23 2025 22F 18F / 96% WNW 27 G 42 MPH 6200 FT 8:1 / 12% 0.00" / 0.0" 1.08" / 10.6" 47 05 AM Sun Mar 23 2025 22F 18F / 90% WNW 28 G 42 MPH 6200 FT 8:1 / 12% 0.00" / 0.0" 1.08" / 10.6" 48 06 AM Sun Mar 23 2025 21F 17F / 94% WNW 28 G 41 MPH 6200 FT 8:1 / 12% 0.00" / 0.0" 1.08" / 10.6"