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 04-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 PM Fri Apr 04 2025 22F 15F / 91% ENE 8 G 15 MPH 5600 FT 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Fri Apr 04 2025 23F 17F / 85% NNE 7 G 12 MPH 5500 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Fri Apr 04 2025 25F 18F / 81% N 8 G 15 MPH 5600 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Fri Apr 04 2025 26F 17F / 87% N 12 G 21 MPH 5700 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Fri Apr 04 2025 26F 17F / 85% NNW 14 G 24 MPH 5700 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Fri Apr 04 2025 25F 17F / 88% NNW 15 G 26 MPH 5700 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Fri Apr 04 2025 23F 17F / 86% NNW 16 G 26 MPH 5900 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Fri Apr 04 2025 22F 15F / 84% NNW 16 G 24 MPH 6000 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Fri Apr 04 2025 19F 13F / 92% N 13 G 20 MPH 5600 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Fri Apr 04 2025 17F 13F / 75% N 13 G 20 MPH 5400 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Fri Apr 04 2025 15F 12F / 87% NE 12 G 21 MPH 5400 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Fri Apr 04 2025 15F 12F / 95% NE 15 G 24 MPH 5400 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sat Apr 05 2025 15F 12F / 100% NE 13 G 26 MPH 5300 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sat Apr 05 2025 15F 12F / 77% NE 11 G 18 MPH 5300 FT 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sat Apr 05 2025 13F 12F / 74% NE 13 G 19 MPH 5300 FT 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Sat Apr 05 2025 13F 11F / 69% NE 10 G 16 MPH 5200 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Sat Apr 05 2025 13F 11F / 70% NNE 12 G 19 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Sat Apr 05 2025 12F 11F / 70% NNE 14 G 21 MPH 4500 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Sat Apr 05 2025 11F 11F / 67% N 14 G 21 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Sat Apr 05 2025 11F 10F / 67% N 15 G 22 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Sat Apr 05 2025 11F 10F / 60% NNE 16 G 24 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Sat Apr 05 2025 12F 11F / 61% NNE 15 G 22 MPH 4400 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Sat Apr 05 2025 16F 13F / 54% NNE 15 G 22 MPH 4700 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Sat Apr 05 2025 19F 14F / 55% NNE 14 G 23 MPH 5000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Sat Apr 05 2025 21F 14F / 52% NNE 13 G 21 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Sat Apr 05 2025 22F 15F / 59% N 11 G 19 MPH 5500 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Sat Apr 05 2025 25F 17F / 63% NNW 11 G 19 MPH 5600 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Sat Apr 05 2025 27F 17F / 70% NNW 11 G 20 MPH 5700 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Sat Apr 05 2025 26F 18F / 66% NNW 12 G 21 MPH 6000 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Sat Apr 05 2025 25F 18F / 67% NNW 13 G 22 MPH 5900 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Sat Apr 05 2025 24F 19F / 67% NNW 14 G 23 MPH 5800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Sat Apr 05 2025 22F 18F / 63% NNW 15 G 23 MPH 5900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Sat Apr 05 2025 19F 17F / 56% N 15 G 22 MPH 5900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Sat Apr 05 2025 18F 17F / 46% N 16 G 23 MPH 5800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Sat Apr 05 2025 17F 18F / 48% N 16 G 24 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Sat Apr 05 2025 17F 17F / 49% N 15 G 21 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Sun Apr 06 2025 17F 18F / 52% NNW 15 G 20 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Sun Apr 06 2025 17F 18F / 51% NNW 15 G 19 MPH 5600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Sun Apr 06 2025 17F 18F / 47% NW 15 G 19 MPH 5500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Sun Apr 06 2025 17F 18F / 44% NW 16 G 21 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Sun Apr 06 2025 17F 18F / 41% NW 15 G 23 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Sun Apr 06 2025 17F 18F / 39% NW 18 G 24 MPH 5700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Sun Apr 06 2025 16F 18F / 38% NW 18 G 24 MPH 5600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Sun Apr 06 2025 16F 17F / 38% NW 18 G 24 MPH 5400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Sun Apr 06 2025 16F 17F / 35% NW 19 G 25 MPH 5300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Sun Apr 06 2025 19F 20F / 35% NW 17 G 25 MPH 5100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Sun Apr 06 2025 22F 21F / 47% ESE 16 G 22 MPH 5200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Sun Apr 06 2025 26F 22F / 36% ENE 15 G 22 MPH 5500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Sun Apr 06 2025 30F 24F / 38% NNW 13 G 21 MPH 5600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0"