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 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 06 AM Fri Apr 18 2025 10F 6F / 96% WNW 11 G 14 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Fri Apr 18 2025 11F 6F / 99% NW 8 G 12 MPH ≤ KSLC 22:1 / 5% 0.04" / 0.9" 0.04" / 0.9" 2 08 AM Fri Apr 18 2025 10F 5F / 100% NW 6 G 9 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.04" / 0.9" 3 09 AM Fri Apr 18 2025 12F 7F / 92% N 4 G 6 MPH 4300 FT 21:1 / 5% 0.00" / 0.0" 0.04" / 0.9" 4 10 AM Fri Apr 18 2025 15F 9F / 92% NNW 6 G 8 MPH 4400 FT 21:1 / 5% 0.00" / 0.0" 0.04" / 0.9" 5 11 AM Fri Apr 18 2025 17F 10F / 94% NE 7 G 13 MPH 4500 FT 21:1 / 5% 0.01" / 0.2" 0.05" / 1.1" 6 12 PM Fri Apr 18 2025 18F 11F / 86% NNE 9 G 16 MPH 4700 FT 21:1 / 5% 0.00" / 0.0" 0.05" / 1.1" 7 01 PM Fri Apr 18 2025 21F 13F / 83% N 9 G 14 MPH 4600 FT 20:1 / 5% 0.00" / 0.0" 0.05" / 1.1" 8 02 PM Fri Apr 18 2025 23F 14F / 77% NNW 13 G 21 MPH 4800 FT 19:1 / 5% 0.00" / 0.0" 0.05" / 1.1" 9 03 PM Fri Apr 18 2025 25F 15F / 73% NW 14 G 23 MPH 4800 FT 19:1 / 5% 0.00" / 0.0" 0.05" / 1.1" 10 04 PM Fri Apr 18 2025 24F 15F / 68% NNW 18 G 27 MPH 4900 FT 18:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 11 05 PM Fri Apr 18 2025 24F 15F / 66% NNW 17 G 28 MPH 5000 FT 17:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 12 06 PM Fri Apr 18 2025 22F 14F / 75% NNW 17 G 25 MPH 5200 FT 17:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 13 07 PM Fri Apr 18 2025 19F 12F / 83% N 19 G 32 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 14 08 PM Fri Apr 18 2025 16F 10F / 72% N 20 G 32 MPH 5000 FT 16:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 15 09 PM Fri Apr 18 2025 13F 9F / 64% N 20 G 31 MPH 5100 FT 15:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 16 10 PM Fri Apr 18 2025 12F 8F / 69% NNE 20 G 31 MPH 4900 FT 15:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 17 11 PM Fri Apr 18 2025 11F 8F / 78% NNE 20 G 31 MPH 4700 FT 15:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 18 12 AM Sat Apr 19 2025 11F 8F / 74% NNE 20 G 30 MPH 4600 FT 14:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 19 01 AM Sat Apr 19 2025 11F 8F / 69% N 19 G 29 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 20 02 AM Sat Apr 19 2025 10F 8F / 67% N 21 G 33 MPH 4600 FT 13:1 / 8% 0.00" / 0.0" 0.05" / 1.1" 21 03 AM Sat Apr 19 2025 9F 7F / 68% N 21 G 33 MPH 4600 FT 14:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 22 04 AM Sat Apr 19 2025 9F 8F / 63% NNE 23 G 34 MPH 4700 FT 13:1 / 8% 0.00" / 0.0" 0.05" / 1.1" 23 05 AM Sat Apr 19 2025 9F 7F / 60% NNE 23 G 33 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.05" / 1.1" 24 06 AM Sat Apr 19 2025 9F 7F / 66% NNE 21 G 34 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 25 07 AM Sat Apr 19 2025 8F 7F / 64% N 20 G 33 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 26 08 AM Sat Apr 19 2025 10F 8F / 63% NNE 21 G 34 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 27 09 AM Sat Apr 19 2025 13F 10F / 59% N 20 G 32 MPH 4400 FT 14:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 28 10 AM Sat Apr 19 2025 17F 12F / 55% N 18 G 29 MPH 4600 FT 14:1 / 7% 0.00" / 0.0" 0.05" / 1.1" 29 11 AM Sat Apr 19 2025 19F 13F / 56% N 16 G 28 MPH 4700 FT 11:1 / 9% 0.00" / 0.0" 0.05" / 1.1" 30 12 PM Sat Apr 19 2025 23F 15F / 66% NNW 15 G 26 MPH 5000 FT 12:1 / 8% 0.00" / 0.0" 0.05" / 1.1" 31 01 PM Sat Apr 19 2025 25F 18F / 60% NNW 15 G 24 MPH 5200 FT 12:1 / 8% 0.00" / 0.0" 0.05" / 1.1" 32 02 PM Sat Apr 19 2025 29F 19F / 58% NNW 13 G 22 MPH 5400 FT 11:1 / 9% 0.00" / 0.0" 0.05" / 1.1" 33 03 PM Sat Apr 19 2025 31F 21F / 61% NW 10 G 22 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.05" / 1.1" 34 04 PM Sat Apr 19 2025 31F 21F / 58% NW 14 G 23 MPH 6000 FT 11:1 / 9% 0.00" / 0.0" 0.05" / 1.1" 35 05 PM Sat Apr 19 2025 30F 22F / 59% NW 14 G 23 MPH 6100 FT 10:1 / 10% 0.00" / 0.0" 0.05" / 1.1" 36 06 PM Sat Apr 19 2025 28F 22F / 60% NW 14 G 23 MPH 6100 FT 9:1 / 11% 0.00" / 0.0" 0.05" / 1.1" 37 07 PM Sat Apr 19 2025 28F 23F / 62% NW 16 G 23 MPH 6200 FT 9:1 / 11% 0.00" / 0.0" 0.05" / 1.1" 38 08 PM Sat Apr 19 2025 24F 21F / 59% NW 15 G 22 MPH 6100 FT 10:1 / 10% 0.00" / 0.0" 0.05" / 1.1" 39 09 PM Sat Apr 19 2025 22F 21F / 53% WSW 15 G 19 MPH 6300 FT 10:1 / 10% 0.00" / 0.0" 0.05" / 1.1" 40 10 PM Sat Apr 19 2025 23F 22F / 50% NW 17 G 24 MPH 6300 FT 10:1 / 10% 0.00" / 0.0" 0.05" / 1.1" 41 11 PM Sat Apr 19 2025 23F 22F / 52% NW 17 G 24 MPH 6500 FT 9:1 / 11% 0.00" / 0.0" 0.05" / 1.1" 42 12 AM Sun Apr 20 2025 23F 22F / 53% NW 19 G 26 MPH 6500 FT 9:1 / 11% 0.00" / 0.0" 0.05" / 1.1" 43 01 AM Sun Apr 20 2025 22F 21F / 56% NW 19 G 29 MPH 6400 FT 8:1 / 12% 0.00" / 0.0" 0.05" / 1.1" 44 02 AM Sun Apr 20 2025 23F 20F / 66% NW 21 G 31 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 0.05" / 1.1" 45 03 AM Sun Apr 20 2025 23F 21F / 57% WNW 21 G 30 MPH 6100 FT 9:1 / 11% 0.00" / 0.0" 0.05" / 1.1" 46 04 AM Sun Apr 20 2025 23F 21F / 53% WNW 23 G 30 MPH 6100 FT 8:1 / 12% 0.00" / 0.0" 0.05" / 1.1" 47 05 AM Sun Apr 20 2025 23F 21F / 70% WNW 23 G 31 MPH 6500 FT 9:1 / 11% 0.00" / 0.0" 0.05" / 1.1" 48 06 AM Sun Apr 20 2025 23F 21F / 67% WNW 23 G 32 MPH 6500 FT 8:1 / 12% 0.00" / 0.0" 0.05" / 1.1"