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-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 05 AM Wed Feb 19 2025 12F 12F / 53% WNW 27 G 37 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 1 06 AM Wed Feb 19 2025 12F 11F / 56% WNW 26 G 35 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 2 07 AM Wed Feb 19 2025 13F 13F / 49% WNW 25 G 34 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 3 08 AM Wed Feb 19 2025 14F 14F / 50% WNW 24 G 33 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 09 AM Wed Feb 19 2025 15F 15F / 50% WNW 21 G 30 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 10 AM Wed Feb 19 2025 19F 17F / 45% WNW 18 G 26 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 11 AM Wed Feb 19 2025 24F 20F / 43% W 18 G 27 MPH 4500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 7 12 PM Wed Feb 19 2025 26F 20F / 47% W 18 G 27 MPH 4800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 8 01 PM Wed Feb 19 2025 26F 20F / 58% W 17 G 27 MPH 4900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 9 02 PM Wed Feb 19 2025 26F 20F / 66% W 17 G 30 MPH 5100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 03 PM Wed Feb 19 2025 23F 19F / 87% W 18 G 29 MPH 5200 FT 9:1 / 11% 0.01" / 0.1" 0.01" / 0.1" 11 04 PM Wed Feb 19 2025 23F 19F / 93% W 20 G 32 MPH 5400 FT 9:1 / 11% 0.01" / 0.1" 0.02" / 0.2" 12 05 PM Wed Feb 19 2025 25F 20F / 89% W 22 G 35 MPH 5300 FT 8:1 / 12% 0.00" / 0.0" 0.02" / 0.2" 13 06 PM Wed Feb 19 2025 25F 20F / 92% W 24 G 38 MPH 5400 FT 8:1 / 12% 0.00" / 0.0" 0.02" / 0.2" 14 07 PM Wed Feb 19 2025 24F 20F / 90% W 24 G 39 MPH 5500 FT 8:1 / 12% 0.00" / 0.0" 0.02" / 0.2" 15 08 PM Wed Feb 19 2025 23F 19F / 85% W 23 G 36 MPH 5600 FT 10:1 / 10% 0.00" / 0.0" 0.02" / 0.2" 16 09 PM Wed Feb 19 2025 22F 19F / 81% W 22 G 33 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.02" / 0.2" 17 10 PM Wed Feb 19 2025 22F 18F / 92% W 17 G 27 MPH 5800 FT 9:1 / 11% 0.01" / 0.1" 0.03" / 0.3" 18 11 PM Wed Feb 19 2025 22F 18F / 93% WSW 13 G 21 MPH 5800 FT 11:1 / 9% 0.02" / 0.2" 0.05" / 0.5" 19 12 AM Thu Feb 20 2025 22F 18F / 93% SW 16 G 29 MPH 6200 FT 11:1 / 9% 0.04" / 0.4" 0.09" / 0.9" 20 01 AM Thu Feb 20 2025 23F 18F / 85% SW 18 G 31 MPH 6000 FT 10:1 / 10% 0.00" / 0.0" 0.09" / 0.9" 21 02 AM Thu Feb 20 2025 22F 17F / 84% SSW 16 G 25 MPH 6100 FT 10:1 / 10% 0.01" / 0.1" 0.10" / 1.0" 22 03 AM Thu Feb 20 2025 21F 16F / 100% WSW 13 G 22 MPH 5900 FT 11:1 / 9% 0.03" / 0.3" 0.13" / 1.3" 23 04 AM Thu Feb 20 2025 21F 16F / 93% W 17 G 28 MPH 5200 FT 11:1 / 9% 0.03" / 0.3" 0.16" / 1.6" 24 05 AM Thu Feb 20 2025 20F 16F / 98% W 20 G 28 MPH 4900 FT 13:1 / 8% 0.04" / 0.5" 0.20" / 2.1" 25 06 AM Thu Feb 20 2025 20F 15F / 97% W 18 G 26 MPH 5300 FT 14:1 / 7% 0.06" / 0.8" 0.26" / 2.9" 26 07 AM Thu Feb 20 2025 19F 14F / 100% WNW 15 G 22 MPH 5300 FT 16:1 / 6% 0.02" / 0.3" 0.28" / 3.2" 27 08 AM Thu Feb 20 2025 19F 13F / 96% WNW 16 G 24 MPH 5200 FT 14:1 / 7% 0.02" / 0.3" 0.30" / 3.5" 28 09 AM Thu Feb 20 2025 18F 12F / 98% WNW 15 G 24 MPH 5100 FT 17:1 / 6% 0.00" / 0.0" 0.30" / 3.5" 29 10 AM Thu Feb 20 2025 19F 13F / 98% NW 16 G 25 MPH 5100 FT 15:1 / 7% 0.01" / 0.2" 0.31" / 3.7" 30 11 AM Thu Feb 20 2025 21F 13F / 94% NW 18 G 28 MPH 5200 FT 14:1 / 7% 0.02" / 0.3" 0.33" / 4.0" 31 12 PM Thu Feb 20 2025 22F 14F / 95% WNW 18 G 29 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 0.33" / 4.0" 32 01 PM Thu Feb 20 2025 22F 14F / 94% WNW 20 G 31 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 0.33" / 4.0" 33 02 PM Thu Feb 20 2025 23F 14F / 95% WNW 21 G 33 MPH 5400 FT 13:1 / 8% 0.00" / 0.0" 0.33" / 4.0" 34 03 PM Thu Feb 20 2025 22F 14F / 97% WNW 20 G 32 MPH 5500 FT 13:1 / 8% 0.01" / 0.1" 0.34" / 4.1" 35 04 PM Thu Feb 20 2025 21F 13F / 93% NW 22 G 34 MPH 5600 FT 13:1 / 8% 0.01" / 0.1" 0.35" / 4.2" 36 05 PM Thu Feb 20 2025 19F 12F / 92% NW 21 G 34 MPH 5400 FT 13:1 / 8% 0.00" / 0.0" 0.35" / 4.2" 37 06 PM Thu Feb 20 2025 18F 12F / 95% NW 23 G 34 MPH 5400 FT 13:1 / 8% 0.02" / 0.3" 0.37" / 4.5" 38 07 PM Thu Feb 20 2025 17F 11F / 91% NW 19 G 34 MPH 5000 FT 13:1 / 8% 0.03" / 0.4" 0.40" / 4.9" 39 08 PM Thu Feb 20 2025 16F 11F / 92% NW 20 G 31 MPH 4800 FT 13:1 / 8% 0.02" / 0.3" 0.42" / 5.2" 40 09 PM Thu Feb 20 2025 16F 11F / 88% NW 19 G 29 MPH 4800 FT 13:1 / 8% 0.01" / 0.1" 0.43" / 5.3" 41 10 PM Thu Feb 20 2025 15F 11F / 91% NW 20 G 28 MPH 4700 FT 14:1 / 7% 0.00" / 0.0" 0.43" / 5.3" 42 11 PM Thu Feb 20 2025 16F 11F / 92% NNW 18 G 26 MPH 4700 FT 16:1 / 6% 0.00" / 0.0" 0.43" / 5.3" 43 12 AM Fri Feb 21 2025 15F 11F / 89% NNW 16 G 25 MPH 4600 FT 16:1 / 6% 0.01" / 0.2" 0.44" / 5.5" 44 01 AM Fri Feb 21 2025 15F 11F / 91% NNW 15 G 24 MPH 4600 FT 15:1 / 7% 0.01" / 0.2" 0.45" / 5.7" 45 02 AM Fri Feb 21 2025 15F 11F / 94% NNW 13 G 22 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.45" / 5.7" 46 03 AM Fri Feb 21 2025 16F 12F / 97% N 11 G 19 MPH 4400 FT 16:1 / 6% 0.00" / 0.0" 0.45" / 5.7" 47 04 AM Fri Feb 21 2025 16F 13F / 87% NNW 12 G 18 MPH 4300 FT 15:1 / 7% 0.00" / 0.0" 0.45" / 5.7" 48 05 AM Fri Feb 21 2025 15F 13F / 94% NNW 11 G 17 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 0.45" / 5.7"