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 20-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 Wed Feb 19 2025 24F 21F / 70% WSW 17 G 26 MPH 6000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 1 12 AM Thu Feb 20 2025 22F 18F / 94% SW 11 G 21 MPH 5800 FT 10:1 / 10% 0.01" / 0.1" 0.01" / 0.1" 2 01 AM Thu Feb 20 2025 23F 18F / 92% SSW 18 G 35 MPH 5600 FT 10:1 / 10% 0.11" / 1.1" 0.12" / 1.2" 3 02 AM Thu Feb 20 2025 23F 18F / 88% SW 22 G 40 MPH 5700 FT 12:1 / 8% 0.01" / 0.1" 0.13" / 1.3" 4 03 AM Thu Feb 20 2025 22F 18F / 90% WSW 17 G 29 MPH 5600 FT 12:1 / 8% 0.01" / 0.1" 0.14" / 1.4" 5 04 AM Thu Feb 20 2025 20F 16F / 96% WSW 13 G 21 MPH 5500 FT 12:1 / 8% 0.00" / 0.0" 0.14" / 1.4" 6 05 AM Thu Feb 20 2025 20F 15F / 100% WSW 12 G 20 MPH 5200 FT 12:1 / 8% 0.00" / 0.0" 0.14" / 1.4" 7 06 AM Thu Feb 20 2025 20F 14F / 100% WSW 10 G 18 MPH 5000 FT 16:1 / 6% 0.01" / 0.2" 0.15" / 1.6" 8 07 AM Thu Feb 20 2025 18F 13F / 100% W 11 G 18 MPH 4700 FT 15:1 / 7% 0.04" / 0.6" 0.19" / 2.2" 9 08 AM Thu Feb 20 2025 17F 13F / 99% WNW 13 G 21 MPH 4700 FT 14:1 / 7% 0.03" / 0.4" 0.22" / 2.6" 10 09 AM Thu Feb 20 2025 18F 12F / 100% WNW 15 G 22 MPH 4700 FT 14:1 / 7% 0.02" / 0.3" 0.24" / 2.9" 11 10 AM Thu Feb 20 2025 19F 13F / 97% WNW 17 G 25 MPH 4400 FT 15:1 / 7% 0.02" / 0.3" 0.26" / 3.2" 12 11 AM Thu Feb 20 2025 20F 13F / 93% WNW 17 G 25 MPH 4400 FT 14:1 / 7% 0.02" / 0.3" 0.28" / 3.5" 13 12 PM Thu Feb 20 2025 20F 14F / 96% NW 17 G 27 MPH 4500 FT 15:1 / 7% 0.02" / 0.3" 0.30" / 3.8" 14 01 PM Thu Feb 20 2025 21F 15F / 97% NW 17 G 27 MPH 4600 FT 15:1 / 7% 0.02" / 0.3" 0.32" / 4.1" 15 02 PM Thu Feb 20 2025 22F 15F / 95% NW 17 G 26 MPH 4700 FT 14:1 / 7% 0.01" / 0.1" 0.33" / 4.2" 16 03 PM Thu Feb 20 2025 22F 14F / 97% NW 18 G 28 MPH 4800 FT 14:1 / 7% 0.01" / 0.1" 0.34" / 4.3" 17 04 PM Thu Feb 20 2025 20F 13F / 95% NW 18 G 32 MPH 4900 FT 13:1 / 8% 0.01" / 0.1" 0.35" / 4.4" 18 05 PM Thu Feb 20 2025 19F 13F / 96% SSE 20 G 34 MPH 5200 FT 13:1 / 8% 0.02" / 0.3" 0.37" / 4.7" 19 06 PM Thu Feb 20 2025 18F 12F / 98% ESE 23 G 33 MPH 5400 FT 13:1 / 8% 0.02" / 0.3" 0.39" / 5.0" 20 07 PM Thu Feb 20 2025 17F 11F / 94% ESE 24 G 35 MPH 5000 FT 14:1 / 7% 0.02" / 0.3" 0.41" / 5.3" 21 08 PM Thu Feb 20 2025 16F 11F / 95% NW 20 G 33 MPH 4700 FT 14:1 / 7% 0.01" / 0.1" 0.42" / 5.4" 22 09 PM Thu Feb 20 2025 16F 11F / 96% NW 19 G 32 MPH 4300 FT 15:1 / 7% 0.00" / 0.0" 0.42" / 5.4" 23 10 PM Thu Feb 20 2025 16F 11F / 98% NW 17 G 28 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.42" / 5.4" 24 11 PM Thu Feb 20 2025 16F 11F / 94% NNW 15 G 24 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.42" / 5.4" 25 12 AM Fri Feb 21 2025 15F 11F / 98% NNW 14 G 25 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.42" / 5.4" 26 01 AM Fri Feb 21 2025 14F 11F / 93% NNW 12 G 19 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.42" / 5.4" 27 02 AM Fri Feb 21 2025 15F 11F / 97% ESE 12 G 20 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.42" / 5.4" 28 03 AM Fri Feb 21 2025 14F 10F / 95% ESE 14 G 21 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.42" / 5.4" 29 04 AM Fri Feb 21 2025 14F 11F / 84% NW 15 G 21 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 30 05 AM Fri Feb 21 2025 13F 11F / 81% NW 15 G 21 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 31 06 AM Fri Feb 21 2025 13F 12F / 67% NW 14 G 21 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 32 07 AM Fri Feb 21 2025 13F 11F / 75% NW 14 G 21 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 33 08 AM Fri Feb 21 2025 13F 11F / 72% NNW 14 G 19 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 34 09 AM Fri Feb 21 2025 13F 12F / 69% NNW 14 G 19 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 35 10 AM Fri Feb 21 2025 16F 14F / 75% NW 11 G 17 MPH 4400 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 36 11 AM Fri Feb 21 2025 19F 16F / 68% NW 12 G 18 MPH 4600 FT 13:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 37 12 PM Fri Feb 21 2025 22F 17F / 65% NNW 9 G 17 MPH 4800 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 38 01 PM Fri Feb 21 2025 24F 18F / 73% NW 12 G 16 MPH 5100 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 39 02 PM Fri Feb 21 2025 24F 18F / 70% NW 12 G 17 MPH 5200 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 40 03 PM Fri Feb 21 2025 23F 18F / 72% NW 11 G 18 MPH 5100 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 41 04 PM Fri Feb 21 2025 22F 19F / 60% WNW 13 G 20 MPH 5100 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 42 05 PM Fri Feb 21 2025 21F 19F / 62% NW 15 G 22 MPH 5200 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 43 06 PM Fri Feb 21 2025 19F 18F / 63% NW 16 G 23 MPH 5200 FT 9:1 / 11% 0.00" / 0.0" 0.42" / 5.4" 44 07 PM Fri Feb 21 2025 16F 17F / 58% WNW 15 G 23 MPH 5300 FT 10:1 / 10% 0.00" / 0.0" 0.42" / 5.4" 45 08 PM Fri Feb 21 2025 18F 19F / 43% NW 16 G 23 MPH 5100 FT 9:1 / 11% 0.00" / 0.0" 0.42" / 5.4" 46 09 PM Fri Feb 21 2025 17F 18F / 46% WNW 18 G 24 MPH 4800 FT 9:1 / 11% 0.00" / 0.0" 0.42" / 5.4" 47 10 PM Fri Feb 21 2025 17F 18F / 40% WNW 18 G 24 MPH 4700 FT 9:1 / 11% 0.00" / 0.0" 0.42" / 5.4" 48 11 PM Fri Feb 21 2025 18F 19F / 42% WNW 18 G 25 MPH 5000 FT 10:1 / 10% 0.00" / 0.0" 0.42" / 5.4"