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 19-Feb-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 11 PM Tue Feb 18 2025 12F 9F / 90% WNW 24 G 34 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 12 AM Wed Feb 19 2025 12F 10F / 86% WNW 24 G 35 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 2 01 AM Wed Feb 19 2025 13F 11F / 71% WNW 24 G 34 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 3 02 AM Wed Feb 19 2025 13F 11F / 68% WNW 24 G 34 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 4 03 AM Wed Feb 19 2025 12F 11F / 65% WNW 27 G 39 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 04 AM Wed Feb 19 2025 13F 11F / 63% WNW 27 G 37 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 05 AM Wed Feb 19 2025 13F 12F / 59% WNW 27 G 38 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 7 06 AM Wed Feb 19 2025 14F 13F / 51% WNW 28 G 38 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 8 07 AM Wed Feb 19 2025 14F 14F / 49% WNW 26 G 36 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 9 08 AM Wed Feb 19 2025 14F 15F / 47% WNW 25 G 34 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 09 AM Wed Feb 19 2025 15F 16F / 46% WNW 23 G 31 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 11 10 AM Wed Feb 19 2025 19F 18F / 43% WNW 19 G 27 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 12 11 AM Wed Feb 19 2025 24F 20F / 43% W 17 G 25 MPH 4400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 13 12 PM Wed Feb 19 2025 26F 21F / 53% W 18 G 27 MPH 4700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 01 PM Wed Feb 19 2025 26F 20F / 58% W 19 G 31 MPH 4900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 15 02 PM Wed Feb 19 2025 24F 19F / 84% W 19 G 29 MPH 5100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 16 03 PM Wed Feb 19 2025 23F 19F / 91% W 20 G 32 MPH 5200 FT 9:1 / 11% 0.02" / 0.2" 0.02" / 0.2" 17 04 PM Wed Feb 19 2025 24F 19F / 95% W 23 G 35 MPH 5400 FT 8:1 / 12% 0.02" / 0.2" 0.04" / 0.4" 18 05 PM Wed Feb 19 2025 25F 20F / 93% W 25 G 39 MPH 5300 FT 8:1 / 12% 0.01" / 0.1" 0.05" / 0.5" 19 06 PM Wed Feb 19 2025 25F 20F / 93% WNW 27 G 40 MPH 5400 FT 8:1 / 12% 0.00" / 0.0" 0.05" / 0.5" 20 07 PM Wed Feb 19 2025 24F 20F / 92% WNW 26 G 39 MPH 5500 FT 8:1 / 12% 0.00" / 0.0" 0.05" / 0.5" 21 08 PM Wed Feb 19 2025 23F 20F / 83% W 23 G 35 MPH 5800 FT 10:1 / 10% 0.00" / 0.0" 0.05" / 0.5" 22 09 PM Wed Feb 19 2025 23F 20F / 77% W 20 G 30 MPH 6400 FT 10:1 / 10% 0.00" / 0.0" 0.05" / 0.5" 23 10 PM Wed Feb 19 2025 23F 20F / 70% WSW 16 G 23 MPH 6600 FT 12:1 / 8% 0.00" / 0.0" 0.05" / 0.5" 24 11 PM Wed Feb 19 2025 21F 18F / 87% SW 13 G 22 MPH 6300 FT 12:1 / 8% 0.00" / 0.0" 0.05" / 0.5" 25 12 AM Thu Feb 20 2025 23F 18F / 85% SSW 18 G 32 MPH 6000 FT 10:1 / 10% 0.05" / 0.5" 0.10" / 1.0" 26 01 AM Thu Feb 20 2025 23F 19F / 82% SSW 22 G 40 MPH 6800 FT 9:1 / 11% 0.03" / 0.3" 0.13" / 1.3" 27 02 AM Thu Feb 20 2025 23F 19F / 75% SSW 23 G 40 MPH 6700 FT 9:1 / 11% 0.00" / 0.0" 0.13" / 1.3" 28 03 AM Thu Feb 20 2025 23F 19F / 75% SW 20 G 35 MPH 6000 FT 10:1 / 10% 0.00" / 0.0" 0.13" / 1.3" 29 04 AM Thu Feb 20 2025 22F 18F / 75% SW 18 G 31 MPH 6000 FT 12:1 / 8% 0.00" / 0.0" 0.13" / 1.3" 30 05 AM Thu Feb 20 2025 19F 15F / 92% SW 16 G 27 MPH 5600 FT 11:1 / 9% 0.00" / 0.0" 0.13" / 1.3" 31 06 AM Thu Feb 20 2025 19F 15F / 91% WNW 19 G 30 MPH 5300 FT 12:1 / 8% 0.06" / 0.7" 0.19" / 2.0" 32 07 AM Thu Feb 20 2025 20F 15F / 95% W 17 G 28 MPH 5300 FT 14:1 / 7% 0.03" / 0.4" 0.22" / 2.4" 33 08 AM Thu Feb 20 2025 19F 14F / 96% WNW 15 G 23 MPH 4800 FT 14:1 / 7% 0.00" / 0.0" 0.22" / 2.4" 34 09 AM Thu Feb 20 2025 20F 13F / 95% WNW 17 G 27 MPH 4900 FT 13:1 / 8% 0.05" / 0.6" 0.27" / 3.0" 35 10 AM Thu Feb 20 2025 20F 13F / 95% WNW 17 G 26 MPH 4900 FT 14:1 / 7% 0.06" / 0.8" 0.33" / 3.8" 36 11 AM Thu Feb 20 2025 21F 14F / 96% WNW 17 G 26 MPH 5000 FT 15:1 / 7% 0.03" / 0.4" 0.36" / 4.2" 37 12 PM Thu Feb 20 2025 22F 15F / 94% WNW 20 G 30 MPH 5000 FT 14:1 / 7% 0.04" / 0.6" 0.40" / 4.8" 38 01 PM Thu Feb 20 2025 22F 15F / 95% WNW 20 G 33 MPH 5000 FT 15:1 / 7% 0.03" / 0.4" 0.43" / 5.2" 39 02 PM Thu Feb 20 2025 23F 14F / 95% NW 21 G 31 MPH 5000 FT 12:1 / 8% 0.03" / 0.4" 0.46" / 5.6" 40 03 PM Thu Feb 20 2025 22F 15F / 92% NW 22 G 33 MPH 5100 FT 13:1 / 8% 0.02" / 0.3" 0.48" / 5.9" 41 04 PM Thu Feb 20 2025 21F 14F / 91% NW 22 G 34 MPH 5200 FT 14:1 / 7% 0.02" / 0.3" 0.50" / 6.2" 42 05 PM Thu Feb 20 2025 20F 14F / 93% NW 23 G 37 MPH 5500 FT 15:1 / 7% 0.02" / 0.3" 0.52" / 6.5" 43 06 PM Thu Feb 20 2025 19F 12F / 90% NW 24 G 38 MPH 5300 FT 17:1 / 6% 0.01" / 0.2" 0.53" / 6.7" 44 07 PM Thu Feb 20 2025 18F 12F / 98% NW 24 G 36 MPH 5200 FT 14:1 / 7% 0.00" / 0.0" 0.53" / 6.7" 45 08 PM Thu Feb 20 2025 17F 12F / 99% NW 22 G 35 MPH 4900 FT 14:1 / 7% 0.00" / 0.0" 0.53" / 6.7" 46 09 PM Thu Feb 20 2025 16F 11F / 93% NW 21 G 32 MPH 4800 FT 13:1 / 8% 0.00" / 0.0" 0.53" / 6.7" 47 10 PM Thu Feb 20 2025 15F 12F / 93% NNW 18 G 29 MPH 4700 FT 14:1 / 7% 0.00" / 0.0" 0.53" / 6.7" 48 11 PM Thu Feb 20 2025 16F 11F / 93% NNW 18 G 29 MPH 4500 FT 14:1 / 7% 0.00" / 0.0" 0.53" / 6.7"