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 18-Apr-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 AM Fri Apr 18 2025 11F 6F / 91% WNW 22 G 33 MPH 4500 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Fri Apr 18 2025 12F 7F / 91% WNW 21 G 31 MPH 4500 FT 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Fri Apr 18 2025 11F 7F / 87% WNW 17 G 25 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Fri Apr 18 2025 9F 6F / 93% WNW 15 G 21 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Fri Apr 18 2025 9F 6F / 88% WNW 17 G 25 MPH 4600 FT 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Fri Apr 18 2025 10F 6F / 91% NW 15 G 21 MPH 4500 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Fri Apr 18 2025 10F 5F / 100% NW 12 G 19 MPH 4500 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Fri Apr 18 2025 11F 5F / 96% NW 11 G 17 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Fri Apr 18 2025 12F 6F / 92% NW 10 G 16 MPH 4500 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Fri Apr 18 2025 13F 7F / 100% NNW 7 G 12 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Fri Apr 18 2025 15F 8F / 97% SE 7 G 11 MPH 4300 FT 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Fri Apr 18 2025 16F 9F / 96% N 9 G 15 MPH 4500 FT 22:1 / 5% 0.03" / 0.7" 0.03" / 0.7" 12 12 PM Fri Apr 18 2025 18F 11F / 96% NNE 9 G 16 MPH 4400 FT 21:1 / 5% 0.00" / 0.0" 0.03" / 0.7" 13 01 PM Fri Apr 18 2025 20F 13F / 89% N 12 G 20 MPH 4400 FT 21:1 / 5% 0.00" / 0.0" 0.03" / 0.7" 14 02 PM Fri Apr 18 2025 22F 14F / 85% N 13 G 22 MPH 4500 FT 21:1 / 5% 0.00" / 0.0" 0.03" / 0.7" 15 03 PM Fri Apr 18 2025 23F 15F / 77% NNW 15 G 24 MPH 4600 FT 19:1 / 5% 0.00" / 0.0" 0.03" / 0.7" 16 04 PM Fri Apr 18 2025 23F 14F / 74% NNW 16 G 26 MPH 4700 FT 18:1 / 6% 0.00" / 0.0" 0.03" / 0.7" 17 05 PM Fri Apr 18 2025 23F 14F / 71% N 18 G 29 MPH 4800 FT 17:1 / 6% 0.00" / 0.0" 0.03" / 0.7" 18 06 PM Fri Apr 18 2025 20F 13F / 70% N 17 G 27 MPH 4800 FT 17:1 / 6% 0.00" / 0.0" 0.03" / 0.7" 19 07 PM Fri Apr 18 2025 18F 11F / 72% N 18 G 27 MPH 4700 FT 16:1 / 6% 0.00" / 0.0" 0.03" / 0.7" 20 08 PM Fri Apr 18 2025 15F 9F / 73% N 19 G 29 MPH 4800 FT 16:1 / 6% 0.00" / 0.0" 0.03" / 0.7" 21 09 PM Fri Apr 18 2025 12F 8F / 82% NNE 17 G 29 MPH 4600 FT 16:1 / 6% 0.00" / 0.0" 0.03" / 0.7" 22 10 PM Fri Apr 18 2025 11F 7F / 74% NNE 20 G 31 MPH 4500 FT 15:1 / 7% 0.00" / 0.0" 0.03" / 0.7" 23 11 PM Fri Apr 18 2025 10F 7F / 69% NNE 19 G 31 MPH 4500 FT 15:1 / 7% 0.00" / 0.0" 0.03" / 0.7" 24 12 AM Sat Apr 19 2025 10F 7F / 68% NE 19 G 31 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 25 01 AM Sat Apr 19 2025 9F 7F / 69% NNE 20 G 32 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 26 02 AM Sat Apr 19 2025 8F 7F / 65% NNE 22 G 33 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 27 03 AM Sat Apr 19 2025 8F 7F / 62% N 20 G 33 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.03" / 0.7" 28 04 AM Sat Apr 19 2025 8F 7F / 66% N 22 G 33 MPH 4400 FT 14:1 / 7% 0.00" / 0.0" 0.03" / 0.7" 29 05 AM Sat Apr 19 2025 8F 7F / 67% NNE 21 G 32 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 30 06 AM Sat Apr 19 2025 8F 6F / 65% NNE 21 G 33 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 31 07 AM Sat Apr 19 2025 8F 7F / 60% NNE 22 G 35 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.03" / 0.7" 32 08 AM Sat Apr 19 2025 9F 7F / 61% NNE 22 G 36 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.03" / 0.7" 33 09 AM Sat Apr 19 2025 12F 9F / 61% NNE 21 G 34 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.03" / 0.7" 34 10 AM Sat Apr 19 2025 16F 11F / 60% N 20 G 32 MPH 4300 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 35 11 AM Sat Apr 19 2025 19F 13F / 65% N 19 G 31 MPH 4500 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 36 12 PM Sat Apr 19 2025 22F 14F / 69% N 16 G 29 MPH 4800 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 37 01 PM Sat Apr 19 2025 26F 17F / 67% NNW 15 G 24 MPH 5200 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.7" 38 02 PM Sat Apr 19 2025 28F 19F / 69% NNW 14 G 26 MPH 5400 FT 12:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 39 03 PM Sat Apr 19 2025 31F 21F / 53% NNW 15 G 24 MPH 5600 FT 12:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 40 04 PM Sat Apr 19 2025 32F 22F / 61% NW 15 G 25 MPH 5800 FT 12:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 41 05 PM Sat Apr 19 2025 32F 23F / 60% NW 15 G 24 MPH 5900 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 42 06 PM Sat Apr 19 2025 29F 23F / 56% NW 15 G 24 MPH 6000 FT 12:1 / 8% 0.00" / 0.0" 0.03" / 0.7" 43 07 PM Sat Apr 19 2025 27F 22F / 64% NW 15 G 23 MPH 6000 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.7" 44 08 PM Sat Apr 19 2025 23F 20F / 65% W 12 G 17 MPH 6000 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.7" 45 09 PM Sat Apr 19 2025 21F 20F / 60% SE 15 G 19 MPH 6000 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.7" 46 10 PM Sat Apr 19 2025 22F 20F / 52% ESE 17 G 22 MPH 6100 FT 9:1 / 11% 0.00" / 0.0" 0.03" / 0.7" 47 11 PM Sat Apr 19 2025 21F 19F / 60% ESE 16 G 25 MPH 6100 FT 8:1 / 12% 0.00" / 0.0" 0.03" / 0.7" 48 12 AM Sun Apr 20 2025 21F 20F / 55% NW 19 G 30 MPH 6100 FT 8:1 / 12% 0.00" / 0.0" 0.03" / 0.7"