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 17-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 Mon Feb 17 2025 18F 11F / 97% W 21 G 32 MPH 5500 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 06 AM Mon Feb 17 2025 18F 12F / 96% W 22 G 36 MPH 5500 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 2 07 AM Mon Feb 17 2025 18F 11F / 95% W 23 G 37 MPH 5500 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 3 08 AM Mon Feb 17 2025 17F 10F / 96% W 26 G 41 MPH 5400 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 4 09 AM Mon Feb 17 2025 17F 10F / 96% W 24 G 38 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 5 10 AM Mon Feb 17 2025 18F 10F / 92% W 25 G 40 MPH 5000 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 6 11 AM Mon Feb 17 2025 20F 11F / 93% W 24 G 40 MPH 5300 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 7 12 PM Mon Feb 17 2025 22F 12F / 91% W 25 G 39 MPH 5300 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 8 01 PM Mon Feb 17 2025 22F 12F / 96% W 22 G 36 MPH 5100 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 9 02 PM Mon Feb 17 2025 23F 13F / 96% W 20 G 32 MPH 5100 FT 14:1 / 7% 0.01" / 0.1" 0.01" / 0.1" 10 03 PM Mon Feb 17 2025 21F 12F / 97% W 21 G 33 MPH 5000 FT 14:1 / 7% 0.02" / 0.3" 0.03" / 0.4" 11 04 PM Mon Feb 17 2025 20F 11F / 91% W 22 G 35 MPH 5200 FT 14:1 / 7% 0.00" / 0.0" 0.03" / 0.4" 12 05 PM Mon Feb 17 2025 18F 10F / 92% W 23 G 34 MPH 5300 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.4" 13 06 PM Mon Feb 17 2025 16F 9F / 91% W 22 G 34 MPH 5300 FT 15:1 / 7% 0.00" / 0.0" 0.03" / 0.4" 14 07 PM Mon Feb 17 2025 14F 8F / 97% WNW 21 G 31 MPH 5300 FT 16:1 / 6% 0.00" / 0.0" 0.03" / 0.4" 15 08 PM Mon Feb 17 2025 15F 9F / 96% W 21 G 31 MPH 5100 FT 13:1 / 8% 0.01" / 0.1" 0.04" / 0.5" 16 09 PM Mon Feb 17 2025 15F 9F / 98% WNW 24 G 38 MPH 5100 FT 14:1 / 7% 0.03" / 0.4" 0.07" / 0.9" 17 10 PM Mon Feb 17 2025 15F 9F / 95% W 26 G 41 MPH 4900 FT 13:1 / 8% 0.00" / 0.0" 0.07" / 0.9" 18 11 PM Mon Feb 17 2025 15F 8F / 96% WNW 22 G 32 MPH 4900 FT 14:1 / 7% 0.00" / 0.0" 0.07" / 0.9" 19 12 AM Tue Feb 18 2025 14F 8F / 91% WNW 21 G 31 MPH 4900 FT 15:1 / 7% 0.00" / 0.0" 0.07" / 0.9" 20 01 AM Tue Feb 18 2025 13F 7F / 95% WNW 22 G 33 MPH 4900 FT 17:1 / 6% 0.00" / 0.0" 0.07" / 0.9" 21 02 AM Tue Feb 18 2025 11F 7F / 87% WNW 21 G 31 MPH 4900 FT 16:1 / 6% 0.00" / 0.0" 0.07" / 0.9" 22 03 AM Tue Feb 18 2025 10F 6F / 88% WNW 21 G 31 MPH 4900 FT 17:1 / 6% 0.00" / 0.0" 0.07" / 0.9" 23 04 AM Tue Feb 18 2025 10F 5F / 95% WNW 20 G 29 MPH 4900 FT 21:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 24 05 AM Tue Feb 18 2025 10F 5F / 98% WNW 19 G 26 MPH 4800 FT 21:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 25 06 AM Tue Feb 18 2025 11F 5F / 95% WNW 18 G 25 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 26 07 AM Tue Feb 18 2025 11F 6F / 93% WNW 18 G 26 MPH 4600 FT 20:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 27 08 AM Tue Feb 18 2025 10F 6F / 93% WNW 19 G 27 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 28 09 AM Tue Feb 18 2025 12F 6F / 92% WNW 18 G 26 MPH 4400 FT 19:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 29 10 AM Tue Feb 18 2025 15F 8F / 93% WNW 18 G 26 MPH 4400 FT 19:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 30 11 AM Tue Feb 18 2025 17F 8F / 91% WNW 18 G 28 MPH 4400 FT 20:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 31 12 PM Tue Feb 18 2025 18F 9F / 89% WNW 17 G 26 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 32 01 PM Tue Feb 18 2025 19F 9F / 93% WNW 20 G 31 MPH 4500 FT 21:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 33 02 PM Tue Feb 18 2025 19F 8F / 92% WNW 22 G 34 MPH 4600 FT 19:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 34 03 PM Tue Feb 18 2025 17F 8F / 95% WNW 25 G 38 MPH 4800 FT 19:1 / 5% 0.00" / 0.0" 0.07" / 0.9" 35 04 PM Tue Feb 18 2025 17F 8F / 93% WNW 26 G 41 MPH 4800 FT 17:1 / 6% 0.00" / 0.0" 0.07" / 0.9" 36 05 PM Tue Feb 18 2025 16F 8F / 95% WNW 26 G 42 MPH 4700 FT 17:1 / 6% 0.03" / 0.5" 0.10" / 1.4" 37 06 PM Tue Feb 18 2025 15F 8F / 94% WNW 27 G 40 MPH 4600 FT 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 38 07 PM Tue Feb 18 2025 15F 9F / 93% WNW 28 G 42 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 39 08 PM Tue Feb 18 2025 14F 9F / 93% WNW 29 G 43 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 40 09 PM Tue Feb 18 2025 14F 9F / 96% WNW 28 G 43 MPH 4600 FT 17:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 41 10 PM Tue Feb 18 2025 14F 9F / 100% WNW 28 G 42 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 42 11 PM Tue Feb 18 2025 15F 11F / 93% WNW 29 G 43 MPH 4500 FT 15:1 / 7% 0.00" / 0.0" 0.10" / 1.4" 43 12 AM Wed Feb 19 2025 15F 10F / 92% WNW 28 G 42 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 44 01 AM Wed Feb 19 2025 13F 10F / 86% WNW 29 G 43 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 45 02 AM Wed Feb 19 2025 12F 9F / 80% WNW 27 G 41 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.10" / 1.4" 46 03 AM Wed Feb 19 2025 11F 10F / 75% WNW 28 G 41 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.10" / 1.4" 47 04 AM Wed Feb 19 2025 12F 10F / 72% WNW 28 G 39 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.10" / 1.4" 48 05 AM Wed Feb 19 2025 12F 11F / 70% WNW 28 G 38 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.10" / 1.4"