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 19-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 Sat Apr 19 2025 8F 6F / 63% N 20 G 29 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Sat Apr 19 2025 9F 7F / 58% NNE 19 G 29 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Sat Apr 19 2025 10F 8F / 54% N 20 G 31 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Sat Apr 19 2025 13F 10F / 52% N 20 G 30 MPH 4300 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Sat Apr 19 2025 17F 12F / 52% N 19 G 28 MPH 4600 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Sat Apr 19 2025 19F 14F / 52% NNW 17 G 25 MPH 4900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Sat Apr 19 2025 22F 15F / 54% NNW 16 G 27 MPH 5300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Sat Apr 19 2025 24F 17F / 66% NW 14 G 24 MPH 6000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Sat Apr 19 2025 27F 18F / 82% NW 14 G 22 MPH 5500 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Sat Apr 19 2025 29F 20F / 81% NW 13 G 21 MPH 5600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Sat Apr 19 2025 28F 20F / 81% WNW 10 G 19 MPH 5700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Sat Apr 19 2025 28F 21F / 78% WNW 11 G 19 MPH 5900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Sat Apr 19 2025 27F 21F / 79% WNW 11 G 18 MPH 5800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Sat Apr 19 2025 26F 21F / 76% WNW 11 G 16 MPH 5800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Sat Apr 19 2025 22F 20F / 62% WNW 12 G 17 MPH 5800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Sat Apr 19 2025 22F 20F / 56% WNW 16 G 22 MPH 5900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Sat Apr 19 2025 23F 21F / 54% WNW 18 G 26 MPH 6000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Sat Apr 19 2025 23F 20F / 60% WNW 22 G 33 MPH 6200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Sun Apr 20 2025 23F 20F / 58% NW 24 G 35 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Sun Apr 20 2025 23F 20F / 61% WNW 25 G 36 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Sun Apr 20 2025 23F 20F / 62% WNW 25 G 39 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Sun Apr 20 2025 23F 20F / 64% WNW 22 G 34 MPH 6100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Sun Apr 20 2025 24F 20F / 78% WNW 25 G 38 MPH 6200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Sun Apr 20 2025 24F 20F / 75% WNW 27 G 40 MPH 6300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Sun Apr 20 2025 24F 20F / 74% WNW 25 G 36 MPH 6400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Sun Apr 20 2025 23F 20F / 70% WNW 22 G 32 MPH 6500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Sun Apr 20 2025 23F 20F / 69% WNW 23 G 33 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Sun Apr 20 2025 25F 22F / 70% WNW 21 G 29 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 28 10 AM Sun Apr 20 2025 28F 23F / 70% WNW 16 G 24 MPH 6800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 29 11 AM Sun Apr 20 2025 31F 24F / 67% WNW 16 G 24 MPH 6900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 30 12 PM Sun Apr 20 2025 33F 25F / 63% W 16 G 25 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 31 01 PM Sun Apr 20 2025 35F 26F / 60% W 15 G 24 MPH 7700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 32 02 PM Sun Apr 20 2025 38F 27F / 57% W 15 G 25 MPH 7700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 33 03 PM Sun Apr 20 2025 39F 28F / 57% W 15 G 25 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 34 04 PM Sun Apr 20 2025 39F 29F / 57% W 15 G 23 MPH 8100 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 35 05 PM Sun Apr 20 2025 39F 29F / 60% W 18 G 27 MPH 8200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 36 06 PM Sun Apr 20 2025 36F 29F / 55% W 16 G 26 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 37 07 PM Sun Apr 20 2025 34F 30F / 53% WSW 14 G 25 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 38 08 PM Sun Apr 20 2025 32F 29F / 52% WSW 17 G 27 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 39 09 PM Sun Apr 20 2025 31F 29F / 45% SW 19 G 30 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 40 10 PM Sun Apr 20 2025 31F 29F / 44% SW 21 G 32 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 41 11 PM Sun Apr 20 2025 31F 29F / 42% SW 20 G 35 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 42 12 AM Mon Apr 21 2025 32F 30F / 38% SSW 21 G 38 MPH 8300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 43 01 AM Mon Apr 21 2025 32F 30F / 36% SSW 24 G 43 MPH 8200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 44 02 AM Mon Apr 21 2025 31F 29F / 38% WSW 22 G 39 MPH 8300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 45 03 AM Mon Apr 21 2025 30F 28F / 42% WSW 23 G 36 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 46 04 AM Mon Apr 21 2025 30F 26F / 45% WSW 24 G 38 MPH 8300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 47 05 AM Mon Apr 21 2025 27F 25F / 50% W 25 G 37 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 48 06 AM Mon Apr 21 2025 27F 23F / 71% W 23 G 39 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0"