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 00Z 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 06 PM Thu Apr 03 2025 20F 13F / 93% NW 8 G 13 MPH 5700 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Thu Apr 03 2025 20F 13F / 96% NW 11 G 16 MPH 5600 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Thu Apr 03 2025 18F 11F / 95% SE 11 G 15 MPH 5800 FT 21:1 / 5% 0.02" / 0.4" 0.02" / 0.4" 3 09 PM Thu Apr 03 2025 17F 11F / 97% NW 11 G 17 MPH 5600 FT 19:1 / 5% 0.01" / 0.2" 0.03" / 0.6" 4 10 PM Thu Apr 03 2025 16F 11F / 96% NW 10 G 16 MPH 5100 FT 20:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 5 11 PM Thu Apr 03 2025 15F 11F / 95% WNW 6 G 9 MPH 4900 FT 22:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 6 12 AM Fri Apr 04 2025 15F 10F / 94% ENE 9 G 16 MPH 5100 FT 20:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 7 01 AM Fri Apr 04 2025 15F 10F / 92% ENE 8 G 14 MPH 5100 FT 20:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 8 02 AM Fri Apr 04 2025 15F 10F / 89% ENE 9 G 15 MPH 5000 FT 20:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 9 03 AM Fri Apr 04 2025 15F 11F / 86% NE 11 G 17 MPH 5000 FT 20:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 10 04 AM Fri Apr 04 2025 15F 10F / 99% NNE 12 G 19 MPH 5300 FT 19:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 11 05 AM Fri Apr 04 2025 15F 10F / 81% NE 13 G 21 MPH 5400 FT 19:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 12 06 AM Fri Apr 04 2025 13F 9F / 86% NE 12 G 20 MPH 5500 FT 17:1 / 6% 0.00" / 0.0" 0.03" / 0.6" 13 07 AM Fri Apr 04 2025 13F 10F / 87% NNE 11 G 20 MPH 5400 FT 19:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 14 08 AM Fri Apr 04 2025 14F 10F / 89% NNE 12 G 21 MPH 5100 FT 18:1 / 6% 0.00" / 0.0" 0.03" / 0.6" 15 09 AM Fri Apr 04 2025 15F 11F / 93% NE 13 G 23 MPH 5000 FT 17:1 / 6% 0.00" / 0.0" 0.03" / 0.6" 16 10 AM Fri Apr 04 2025 17F 12F / 84% NE 11 G 19 MPH 5200 FT 18:1 / 6% 0.00" / 0.0" 0.03" / 0.6" 17 11 AM Fri Apr 04 2025 20F 14F / 73% E 9 G 16 MPH 5300 FT 18:1 / 6% 0.00" / 0.0" 0.03" / 0.6" 18 12 PM Fri Apr 04 2025 22F 15F / 80% E 7 G 13 MPH 5400 FT 20:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 19 01 PM Fri Apr 04 2025 24F 15F / 92% NE 4 G 9 MPH 5600 FT 21:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 20 02 PM Fri Apr 04 2025 24F 17F / 86% NNW 6 G 9 MPH 5800 FT 22:1 / 5% 0.00" / 0.0" 0.03" / 0.6" 21 03 PM Fri Apr 04 2025 25F 17F / 95% NNW 9 G 17 MPH 5900 FT 20:1 / 5% 0.01" / 0.2" 0.04" / 0.8" 22 04 PM Fri Apr 04 2025 25F 17F / 76% NNW 14 G 23 MPH 6000 FT 17:1 / 6% 0.01" / 0.2" 0.05" / 1.0" 23 05 PM Fri Apr 04 2025 25F 17F / 82% NNW 15 G 23 MPH 5900 FT 16:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 24 06 PM Fri Apr 04 2025 23F 16F / 88% N 16 G 25 MPH 6000 FT 15:1 / 7% 0.00" / 0.0" 0.05" / 1.0" 25 07 PM Fri Apr 04 2025 22F 16F / 87% NNW 14 G 22 MPH 6100 FT 15:1 / 7% 0.00" / 0.0" 0.05" / 1.0" 26 08 PM Fri Apr 04 2025 20F 13F / 95% N 14 G 23 MPH 5700 FT 16:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 27 09 PM Fri Apr 04 2025 18F 14F / 79% N 12 G 19 MPH 5800 FT 14:1 / 7% 0.00" / 0.0" 0.05" / 1.0" 28 10 PM Fri Apr 04 2025 17F 13F / 87% NE 16 G 26 MPH 5800 FT 15:1 / 7% 0.00" / 0.0" 0.05" / 1.0" 29 11 PM Fri Apr 04 2025 17F 12F / 100% NE 14 G 23 MPH 5500 FT 17:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 30 12 AM Sat Apr 05 2025 15F 13F / 78% NE 12 G 20 MPH 5300 FT 18:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 31 01 AM Sat Apr 05 2025 14F 12F / 80% N 13 G 22 MPH 5200 FT 18:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 32 02 AM Sat Apr 05 2025 12F 11F / 81% NNE 13 G 22 MPH 5300 FT 17:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 33 03 AM Sat Apr 05 2025 12F 11F / 73% NNE 14 G 22 MPH 5100 FT 16:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 34 04 AM Sat Apr 05 2025 12F 11F / 69% NNE 15 G 23 MPH 4800 FT 16:1 / 6% 0.00" / 0.0" 0.05" / 1.0" 35 05 AM Sat Apr 05 2025 12F 11F / 67% NNE 14 G 22 MPH 4700 FT 14:1 / 7% 0.00" / 0.0" 0.05" / 1.0" 36 06 AM Sat Apr 05 2025 12F 11F / 61% NNE 14 G 20 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 37 07 AM Sat Apr 05 2025 12F 12F / 58% NE 14 G 20 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.05" / 1.0" 38 08 AM Sat Apr 05 2025 12F 12F / 55% NNE 13 G 20 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.05" / 1.0" 39 09 AM Sat Apr 05 2025 13F 12F / 56% NNE 13 G 17 MPH 4400 FT 13:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 40 10 AM Sat Apr 05 2025 17F 15F / 50% NNE 13 G 20 MPH 4700 FT 11:1 / 9% 0.00" / 0.0" 0.05" / 1.0" 41 11 AM Sat Apr 05 2025 21F 17F / 58% NNE 12 G 21 MPH 5000 FT 11:1 / 9% 0.00" / 0.0" 0.05" / 1.0" 42 12 PM Sat Apr 05 2025 22F 17F / 53% NNE 9 G 17 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 43 01 PM Sat Apr 05 2025 25F 18F / 50% N 8 G 15 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 44 02 PM Sat Apr 05 2025 26F 19F / 52% N 7 G 12 MPH 5300 FT 13:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 45 03 PM Sat Apr 05 2025 28F 20F / 55% N 7 G 14 MPH 5400 FT 13:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 46 04 PM Sat Apr 05 2025 26F 21F / 55% NNE 7 G 14 MPH 5600 FT 12:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 47 05 PM Sat Apr 05 2025 26F 21F / 53% NNE 7 G 15 MPH 5900 FT 12:1 / 8% 0.00" / 0.0" 0.05" / 1.0" 48 06 PM Sat Apr 05 2025 26F 22F / 56% N 8 G 17 MPH 6000 FT 11:1 / 9% 0.00" / 0.0" 0.05" / 1.0"