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 18-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 Tue Feb 18 2025 13F 7F / 93% WNW 24 G 35 MPH 4600 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 1 06 AM Tue Feb 18 2025 12F 7F / 89% NW 22 G 32 MPH 4400 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 2 07 AM Tue Feb 18 2025 12F 7F / 87% NW 24 G 36 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 3 08 AM Tue Feb 18 2025 12F 7F / 96% NW 25 G 37 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 4 09 AM Tue Feb 18 2025 13F 7F / 90% NW 26 G 39 MPH 4300 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 5 10 AM Tue Feb 18 2025 15F 7F / 90% WNW 23 G 33 MPH 4400 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 6 11 AM Tue Feb 18 2025 16F 8F / 97% WNW 21 G 33 MPH 4400 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 7 12 PM Tue Feb 18 2025 18F 9F / 97% WNW 21 G 31 MPH 4600 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 8 01 PM Tue Feb 18 2025 19F 9F / 94% WNW 23 G 33 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 9 02 PM Tue Feb 18 2025 19F 9F / 98% WNW 23 G 34 MPH 4500 FT 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 10 03 PM Tue Feb 18 2025 19F 9F / 100% WNW 26 G 38 MPH 4700 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 11 04 PM Tue Feb 18 2025 17F 9F / 100% WNW 25 G 40 MPH 4700 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 12 05 PM Tue Feb 18 2025 16F 9F / 100% WNW 25 G 38 MPH 4800 FT 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 13 06 PM Tue Feb 18 2025 15F 9F / 99% WNW 25 G 38 MPH 4900 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 14 07 PM Tue Feb 18 2025 13F 9F / 86% WNW 26 G 39 MPH 4700 FT 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 15 08 PM Tue Feb 18 2025 12F 8F / 92% WNW 26 G 38 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 16 09 PM Tue Feb 18 2025 12F 9F / 86% WNW 26 G 37 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 17 10 PM Tue Feb 18 2025 12F 9F / 83% WNW 26 G 37 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 18 11 PM Tue Feb 18 2025 11F 9F / 78% WNW 28 G 39 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 19 12 AM Wed Feb 19 2025 12F 10F / 76% WNW 27 G 39 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 20 01 AM Wed Feb 19 2025 12F 10F / 73% WNW 26 G 38 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 21 02 AM Wed Feb 19 2025 13F 11F / 66% WNW 27 G 37 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 22 03 AM Wed Feb 19 2025 13F 12F / 66% WNW 25 G 35 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 23 04 AM Wed Feb 19 2025 13F 11F / 66% WNW 26 G 35 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 24 05 AM Wed Feb 19 2025 13F 11F / 66% WNW 24 G 34 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 25 06 AM Wed Feb 19 2025 13F 12F / 62% WNW 23 G 32 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 26 07 AM Wed Feb 19 2025 13F 13F / 62% WNW 23 G 32 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 27 08 AM Wed Feb 19 2025 14F 14F / 55% WNW 21 G 29 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 28 09 AM Wed Feb 19 2025 17F 16F / 50% WNW 21 G 29 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 29 10 AM Wed Feb 19 2025 19F 18F / 40% W 19 G 25 MPH 4300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 30 11 AM Wed Feb 19 2025 24F 20F / 46% W 17 G 25 MPH 4600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 31 12 PM Wed Feb 19 2025 24F 20F / 49% W 17 G 28 MPH 4900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 32 01 PM Wed Feb 19 2025 25F 19F / 68% WSW 16 G 26 MPH 5100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 33 02 PM Wed Feb 19 2025 23F 18F / 84% WSW 18 G 30 MPH 5300 FT 10:1 / 10% 0.01" / 0.1" 0.01" / 0.1" 34 03 PM Wed Feb 19 2025 24F 18F / 90% WSW 19 G 31 MPH 5400 FT 9:1 / 11% 0.03" / 0.3" 0.04" / 0.4" 35 04 PM Wed Feb 19 2025 23F 19F / 94% WSW 21 G 33 MPH 5500 FT 9:1 / 11% 0.03" / 0.3" 0.07" / 0.7" 36 05 PM Wed Feb 19 2025 24F 20F / 88% WSW 20 G 33 MPH 5600 FT 8:1 / 12% 0.01" / 0.1" 0.08" / 0.8" 37 06 PM Wed Feb 19 2025 24F 20F / 86% W 24 G 37 MPH 5600 FT 8:1 / 12% 0.00" / 0.0" 0.08" / 0.8" 38 07 PM Wed Feb 19 2025 23F 19F / 96% W 24 G 39 MPH 5600 FT 8:1 / 12% 0.01" / 0.1" 0.09" / 0.9" 39 08 PM Wed Feb 19 2025 24F 19F / 95% W 27 G 43 MPH 6000 FT 10:1 / 10% 0.02" / 0.2" 0.11" / 1.1" 40 09 PM Wed Feb 19 2025 23F 19F / 81% W 27 G 43 MPH 6200 FT 10:1 / 10% 0.00" / 0.0" 0.11" / 1.1" 41 10 PM Wed Feb 19 2025 22F 18F / 80% W 22 G 35 MPH 6200 FT 12:1 / 8% 0.00" / 0.0" 0.11" / 1.1" 42 11 PM Wed Feb 19 2025 22F 18F / 90% W 20 G 30 MPH 6100 FT 12:1 / 8% 0.02" / 0.2" 0.13" / 1.3" 43 12 AM Thu Feb 20 2025 21F 17F / 91% W 17 G 28 MPH 5900 FT 11:1 / 9% 0.02" / 0.2" 0.15" / 1.5" 44 01 AM Thu Feb 20 2025 21F 18F / 93% SW 13 G 22 MPH 6200 FT 11:1 / 9% 0.09" / 1.0" 0.24" / 2.5" 45 02 AM Thu Feb 20 2025 22F 17F / 95% W 12 G 18 MPH 6400 FT 12:1 / 8% 0.09" / 1.1" 0.33" / 3.6" 46 03 AM Thu Feb 20 2025 22F 17F / 89% W 11 G 17 MPH 6300 FT 13:1 / 8% 0.11" / 1.4" 0.44" / 5.0" 47 04 AM Thu Feb 20 2025 22F 17F / 90% WSW 12 G 17 MPH 6200 FT 13:1 / 8% 0.03" / 0.4" 0.47" / 5.4" 48 05 AM Thu Feb 20 2025 20F 17F / 89% W 10 G 20 MPH 6200 FT 14:1 / 7% 0.02" / 0.3" 0.49" / 5.7"