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 06Z 17-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 AM Thu Apr 17 2025 31F 27F / 61% WSW 21 G 34 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Thu Apr 17 2025 29F 26F / 66% WSW 21 G 34 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Thu Apr 17 2025 29F 26F / 64% WSW 20 G 32 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Thu Apr 17 2025 29F 26F / 69% SW 21 G 34 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Thu Apr 17 2025 30F 26F / 71% SW 22 G 39 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Thu Apr 17 2025 31F 26F / 77% SW 23 G 39 MPH 9000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Thu Apr 17 2025 29F 25F / 90% SW 20 G 35 MPH 8700 FT 8:1 / 12% 0.01" / 0.1" 0.01" / 0.1" 7 07 AM Thu Apr 17 2025 30F 25F / 92% SW 26 G 47 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 8 08 AM Thu Apr 17 2025 29F 23F / 100% SW 16 G 30 MPH 8100 FT 10:1 / 10% 0.02" / 0.2" 0.03" / 0.3" 9 09 AM Thu Apr 17 2025 27F 22F / 92% WSW 20 G 35 MPH 6900 FT 9:1 / 11% 0.18" / 1.6" 0.21" / 1.9" 10 10 AM Thu Apr 17 2025 26F 20F / 99% W 18 G 29 MPH 6800 FT 12:1 / 8% 0.06" / 0.7" 0.27" / 2.6" 11 11 AM Thu Apr 17 2025 26F 17F / 94% W 20 G 34 MPH 5400 FT 8:1 / 12% 0.06" / 0.5" 0.33" / 3.1" 12 12 PM Thu Apr 17 2025 25F 16F / 89% W 17 G 30 MPH 5700 FT 13:1 / 8% 0.03" / 0.4" 0.36" / 3.5" 13 01 PM Thu Apr 17 2025 25F 15F / 84% W 17 G 30 MPH 4700 FT 15:1 / 7% 0.00" / 0.0" 0.36" / 3.5" 14 02 PM Thu Apr 17 2025 24F 14F / 82% W 17 G 32 MPH 4700 FT 18:1 / 6% 0.00" / 0.0" 0.36" / 3.5" 15 03 PM Thu Apr 17 2025 25F 14F / 67% WSW 18 G 33 MPH 4800 FT 14:1 / 7% 0.00" / 0.0" 0.36" / 3.5" 16 04 PM Thu Apr 17 2025 24F 13F / 74% W 18 G 29 MPH 4800 FT 16:1 / 6% 0.00" / 0.0" 0.36" / 3.5" 17 05 PM Thu Apr 17 2025 24F 13F / 73% W 23 G 39 MPH 5400 FT 16:1 / 6% 0.00" / 0.0" 0.36" / 3.5" 18 06 PM Thu Apr 17 2025 20F 10F / 96% W 25 G 41 MPH 5200 FT 14:1 / 7% 0.00" / 0.0" 0.36" / 3.5" 19 07 PM Thu Apr 17 2025 18F 10F / 100% W 23 G 37 MPH 5100 FT 13:1 / 8% 0.00" / 0.0" 0.36" / 3.5" 20 08 PM Thu Apr 17 2025 16F 9F / 78% WNW 25 G 41 MPH 5100 FT 15:1 / 7% 0.00" / 0.0" 0.36" / 3.5" 21 09 PM Thu Apr 17 2025 15F 9F / 81% WNW 24 G 37 MPH 5400 FT 13:1 / 8% 0.00" / 0.0" 0.36" / 3.5" 22 10 PM Thu Apr 17 2025 15F 10F / 78% WNW 24 G 39 MPH 5100 FT 13:1 / 8% 0.00" / 0.0" 0.36" / 3.5" 23 11 PM Thu Apr 17 2025 16F 10F / 89% W 19 G 29 MPH 4800 FT 15:1 / 7% 0.00" / 0.0" 0.36" / 3.5" 24 12 AM Fri Apr 18 2025 16F 11F / 100% WNW 10 G 12 MPH 5100 FT 20:1 / 5% 0.05" / 1.0" 0.41" / 4.5" 25 01 AM Fri Apr 18 2025 16F 11F / 96% WSW 8 G 13 MPH 5200 FT 19:1 / 5% 0.18" / 3.4" 0.59" / 7.9" 26 02 AM Fri Apr 18 2025 14F 9F / 88% SW 11 G 14 MPH 5100 FT 18:1 / 6% 0.02" / 0.4" 0.61" / 8.3" 27 03 AM Fri Apr 18 2025 15F 9F / 83% S 10 G 15 MPH 5200 FT 23:1 / 4% 0.00" / 0.0" 0.61" / 8.3" 28 04 AM Fri Apr 18 2025 15F 10F / 95% SE 11 G 18 MPH 4300 FT 18:1 / 6% 0.04" / 0.7" 0.65" / 9.0" 29 05 AM Fri Apr 18 2025 15F 10F / 86% SSE 10 G 15 MPH ≤ KSLC 18:1 / 6% 0.08" / 1.4" 0.73" / 10.4" 30 06 AM Fri Apr 18 2025 16F 10F / 98% SSE 8 G 15 MPH ≤ KSLC 19:1 / 5% 0.08" / 1.5" 0.81" / 11.9" 31 07 AM Fri Apr 18 2025 14F 8F / 90% NW 17 G 29 MPH ≤ KSLC 19:1 / 5% 0.20" / 3.8" 1.01" / 15.7" 32 08 AM Fri Apr 18 2025 15F 8F / 88% NW 19 G 28 MPH ≤ KSLC 20:1 / 5% 0.09" / 1.8" 1.10" / 17.5" 33 09 AM Fri Apr 18 2025 14F 8F / 94% NW 14 G 19 MPH ≤ KSLC 21:1 / 5% 0.05" / 1.0" 1.15" / 18.5" 34 10 AM Fri Apr 18 2025 15F 8F / 95% NW 11 G 20 MPH ≤ KSLC 22:1 / 5% 0.01" / 0.2" 1.16" / 18.7" 35 11 AM Fri Apr 18 2025 17F 10F / 92% ESE 8 G 14 MPH 4300 FT 21:1 / 5% 0.01" / 0.2" 1.17" / 18.9" 36 12 PM Fri Apr 18 2025 20F 12F / 93% E 6 G 9 MPH 4400 FT 22:1 / 5% 0.00" / 0.0" 1.17" / 18.9" 37 01 PM Fri Apr 18 2025 20F 14F / 91% S 5 G 12 MPH 4600 FT 22:1 / 5% 0.00" / 0.0" 1.17" / 18.9" 38 02 PM Fri Apr 18 2025 21F 14F / 96% N 14 G 25 MPH 4900 FT 17:1 / 6% 0.05" / 0.8" 1.22" / 19.7" 39 03 PM Fri Apr 18 2025 22F 14F / 98% N 17 G 25 MPH 4900 FT 20:1 / 5% 0.06" / 1.2" 1.28" / 20.9" 40 04 PM Fri Apr 18 2025 22F 13F / 93% NNW 19 G 30 MPH 5000 FT 16:1 / 6% 0.02" / 0.3" 1.30" / 21.2" 41 05 PM Fri Apr 18 2025 23F 14F / 88% NNW 21 G 33 MPH 5000 FT 14:1 / 7% 0.02" / 0.3" 1.32" / 21.5" 42 06 PM Fri Apr 18 2025 22F 14F / 85% NNW 19 G 32 MPH 5200 FT 14:1 / 7% 0.00" / 0.0" 1.32" / 21.5" 43 07 PM Fri Apr 18 2025 21F 14F / 81% NNW 18 G 28 MPH 5200 FT 14:1 / 7% 0.00" / 0.0" 1.32" / 21.5" 44 08 PM Fri Apr 18 2025 17F 12F / 79% NNW 17 G 29 MPH 5400 FT 13:1 / 8% 0.00" / 0.0" 1.32" / 21.5" 45 09 PM Fri Apr 18 2025 14F 10F / 70% NNW 18 G 28 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 1.32" / 21.5" 46 10 PM Fri Apr 18 2025 15F 10F / 90% N 17 G 27 MPH 4900 FT 15:1 / 7% 0.00" / 0.0" 1.32" / 21.5" 47 11 PM Fri Apr 18 2025 15F 12F / 94% N 19 G 31 MPH 4800 FT 13:1 / 8% 0.01" / 0.1" 1.33" / 21.6" 48 12 AM Sat Apr 19 2025 15F 10F / 95% N 19 G 29 MPH 4800 FT 15:1 / 7% 0.00" / 0.0" 1.33" / 21.6"