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 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 PM Fri Apr 18 2025 20F 12F / 89% NE 8 G 13 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Fri Apr 18 2025 21F 14F / 87% ENE 5 G 11 MPH 4700 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Fri Apr 18 2025 23F 16F / 87% NE 5 G 10 MPH 5000 FT 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Fri Apr 18 2025 24F 15F / 89% NW 11 G 18 MPH 5200 FT 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Fri Apr 18 2025 24F 15F / 84% NNW 15 G 26 MPH 5100 FT 17:1 / 6% 0.01" / 0.2" 0.01" / 0.2" 5 05 PM Fri Apr 18 2025 24F 14F / 76% NNW 18 G 29 MPH 5100 FT 18:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 6 06 PM Fri Apr 18 2025 22F 14F / 70% NNW 15 G 26 MPH 5000 FT 18:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 7 07 PM Fri Apr 18 2025 20F 13F / 79% NNW 18 G 26 MPH 4900 FT 17:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 8 08 PM Fri Apr 18 2025 17F 11F / 82% N 17 G 26 MPH 5100 FT 18:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 9 09 PM Fri Apr 18 2025 14F 9F / 72% N 17 G 27 MPH 5000 FT 19:1 / 5% 0.00" / 0.0" 0.01" / 0.2" 10 10 PM Fri Apr 18 2025 12F 8F / 91% NNE 19 G 31 MPH 4900 FT 16:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 11 11 PM Fri Apr 18 2025 13F 8F / 89% NNE 18 G 28 MPH 4600 FT 19:1 / 5% 0.00" / 0.0" 0.01" / 0.2" 12 12 AM Sat Apr 19 2025 13F 8F / 87% NNE 18 G 29 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 13 01 AM Sat Apr 19 2025 12F 8F / 77% N 19 G 27 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 14 02 AM Sat Apr 19 2025 10F 8F / 71% NNW 17 G 26 MPH 4600 FT 17:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 15 03 AM Sat Apr 19 2025 10F 7F / 66% N 19 G 29 MPH 4500 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 16 04 AM Sat Apr 19 2025 9F 7F / 64% N 20 G 31 MPH 4400 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 17 05 AM Sat Apr 19 2025 9F 7F / 62% N 22 G 32 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 18 06 AM Sat Apr 19 2025 9F 7F / 64% N 20 G 30 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 19 07 AM Sat Apr 19 2025 9F 7F / 63% N 19 G 30 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 20 08 AM Sat Apr 19 2025 10F 8F / 58% N 20 G 31 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 21 09 AM Sat Apr 19 2025 13F 10F / 63% N 20 G 30 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.01" / 0.2" 22 10 AM Sat Apr 19 2025 17F 12F / 57% N 18 G 29 MPH 4600 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 23 11 AM Sat Apr 19 2025 20F 14F / 61% N 17 G 27 MPH 4900 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 24 12 PM Sat Apr 19 2025 23F 15F / 61% NNW 15 G 25 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.01" / 0.2" 25 01 PM Sat Apr 19 2025 25F 18F / 58% NNW 13 G 21 MPH 5200 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 26 02 PM Sat Apr 19 2025 29F 20F / 66% NW 13 G 20 MPH 5500 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 27 03 PM Sat Apr 19 2025 30F 20F / 55% NW 9 G 21 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 28 04 PM Sat Apr 19 2025 30F 21F / 62% NW 12 G 20 MPH 6000 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.2" 29 05 PM Sat Apr 19 2025 30F 22F / 65% NW 13 G 20 MPH 6100 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 30 06 PM Sat Apr 19 2025 28F 22F / 64% NW 14 G 22 MPH 6100 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 31 07 PM Sat Apr 19 2025 26F 21F / 69% WNW 14 G 21 MPH 6200 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 32 08 PM Sat Apr 19 2025 23F 20F / 62% NW 13 G 19 MPH 6200 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 33 09 PM Sat Apr 19 2025 22F 20F / 58% WNW 14 G 20 MPH 6200 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.2" 34 10 PM Sat Apr 19 2025 23F 20F / 57% NW 16 G 24 MPH 6300 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.2" 35 11 PM Sat Apr 19 2025 23F 20F / 57% NW 18 G 25 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 36 12 AM Sun Apr 20 2025 23F 21F / 59% NW 20 G 28 MPH 6400 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 37 01 AM Sun Apr 20 2025 24F 22F / 56% NW 22 G 32 MPH 6300 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 38 02 AM Sun Apr 20 2025 24F 22F / 59% NW 22 G 32 MPH 6200 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 39 03 AM Sun Apr 20 2025 22F 20F / 64% WNW 22 G 30 MPH 6500 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 40 04 AM Sun Apr 20 2025 23F 20F / 70% WNW 24 G 34 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 41 05 AM Sun Apr 20 2025 24F 21F / 74% WNW 25 G 36 MPH 6200 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 42 06 AM Sun Apr 20 2025 24F 22F / 68% WNW 25 G 36 MPH 6600 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 43 07 AM Sun Apr 20 2025 24F 21F / 73% WNW 22 G 31 MPH 6500 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 44 08 AM Sun Apr 20 2025 23F 21F / 73% WNW 20 G 29 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.01" / 0.2" 45 09 AM Sun Apr 20 2025 27F 24F / 76% WNW 19 G 26 MPH 6700 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 46 10 AM Sun Apr 20 2025 30F 25F / 69% WNW 17 G 27 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 47 11 AM Sun Apr 20 2025 32F 26F / 71% WNW 16 G 24 MPH 6700 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2" 48 12 PM Sun Apr 20 2025 34F 26F / 63% W 15 G 24 MPH 7100 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.2"