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 18Z 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 11 AM Mon Feb 17 2025 22F 13F / 91% W 25 G 41 MPH 5600 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 12 PM Mon Feb 17 2025 23F 13F / 95% W 22 G 36 MPH 5800 FT 12:1 / 8% 0.01" / 0.1" 0.01" / 0.1" 2 01 PM Mon Feb 17 2025 22F 13F / 93% W 24 G 38 MPH 5600 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 3 02 PM Mon Feb 17 2025 23F 12F / 98% W 24 G 38 MPH 5400 FT 13:1 / 8% 0.01" / 0.1" 0.02" / 0.2" 4 03 PM Mon Feb 17 2025 23F 12F / 96% W 23 G 37 MPH 5100 FT 12:1 / 8% 0.01" / 0.1" 0.03" / 0.3" 5 04 PM Mon Feb 17 2025 21F 11F / 97% W 22 G 33 MPH 5000 FT 13:1 / 8% 0.01" / 0.1" 0.04" / 0.4" 6 05 PM Mon Feb 17 2025 18F 10F / 94% W 23 G 35 MPH 5000 FT 13:1 / 8% 0.00" / 0.0" 0.04" / 0.4" 7 06 PM Mon Feb 17 2025 16F 9F / 93% WNW 24 G 36 MPH 5100 FT 13:1 / 8% 0.00" / 0.0" 0.04" / 0.4" 8 07 PM Mon Feb 17 2025 15F 8F / 92% WNW 25 G 39 MPH 5300 FT 14:1 / 7% 0.00" / 0.0" 0.04" / 0.4" 9 08 PM Mon Feb 17 2025 14F 8F / 96% WNW 23 G 36 MPH 5300 FT 14:1 / 7% 0.00" / 0.0" 0.04" / 0.4" 10 09 PM Mon Feb 17 2025 14F 8F / 96% WNW 25 G 38 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.04" / 0.4" 11 10 PM Mon Feb 17 2025 15F 8F / 96% WNW 23 G 35 MPH 4900 FT 15:1 / 7% 0.01" / 0.2" 0.05" / 0.6" 12 11 PM Mon Feb 17 2025 15F 9F / 95% WNW 21 G 31 MPH 4900 FT 14:1 / 7% 0.02" / 0.3" 0.07" / 0.9" 13 12 AM Tue Feb 18 2025 14F 8F / 93% WNW 23 G 33 MPH 4900 FT 17:1 / 6% 0.04" / 0.7" 0.11" / 1.6" 14 01 AM Tue Feb 18 2025 12F 7F / 89% WNW 25 G 36 MPH 4300 FT 16:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 15 02 AM Tue Feb 18 2025 11F 6F / 91% WNW 22 G 32 MPH 4700 FT 17:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 16 03 AM Tue Feb 18 2025 10F 6F / 93% WNW 20 G 30 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 17 04 AM Tue Feb 18 2025 12F 6F / 97% WNW 19 G 26 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 18 05 AM Tue Feb 18 2025 11F 6F / 99% WNW 19 G 26 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 19 06 AM Tue Feb 18 2025 12F 6F / 94% WNW 18 G 27 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 20 07 AM Tue Feb 18 2025 12F 6F / 87% WNW 20 G 29 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 21 08 AM Tue Feb 18 2025 11F 6F / 86% WNW 23 G 33 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 22 09 AM Tue Feb 18 2025 13F 7F / 91% WNW 22 G 32 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 23 10 AM Tue Feb 18 2025 15F 8F / 92% WNW 22 G 33 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 24 11 AM Tue Feb 18 2025 17F 9F / 90% WNW 22 G 33 MPH 4400 FT 17:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 25 12 PM Tue Feb 18 2025 19F 9F / 95% WNW 18 G 28 MPH 4400 FT 19:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 26 01 PM Tue Feb 18 2025 20F 10F / 96% WNW 18 G 26 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 27 02 PM Tue Feb 18 2025 20F 9F / 97% WNW 18 G 27 MPH 4600 FT 19:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 28 03 PM Tue Feb 18 2025 19F 9F / 98% WNW 19 G 30 MPH 4500 FT 19:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 29 04 PM Tue Feb 18 2025 18F 9F / 98% WNW 22 G 34 MPH 4800 FT 20:1 / 5% 0.00" / 0.0" 0.11" / 1.6" 30 05 PM Tue Feb 18 2025 16F 8F / 95% WNW 24 G 37 MPH 4800 FT 18:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 31 06 PM Tue Feb 18 2025 15F 8F / 97% WNW 24 G 38 MPH 4800 FT 18:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 32 07 PM Tue Feb 18 2025 14F 9F / 90% WNW 27 G 41 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 33 08 PM Tue Feb 18 2025 13F 8F / 89% WNW 27 G 40 MPH 4500 FT 15:1 / 7% 0.00" / 0.0" 0.11" / 1.6" 34 09 PM Tue Feb 18 2025 12F 9F / 85% WNW 27 G 39 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.11" / 1.6" 35 10 PM Tue Feb 18 2025 11F 9F / 87% WNW 27 G 37 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.11" / 1.6" 36 11 PM Tue Feb 18 2025 12F 10F / 84% WNW 25 G 34 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.11" / 1.6" 37 12 AM Wed Feb 19 2025 12F 10F / 79% WNW 24 G 34 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.11" / 1.6" 38 01 AM Wed Feb 19 2025 11F 10F / 76% WNW 24 G 35 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.11" / 1.6" 39 02 AM Wed Feb 19 2025 12F 11F / 71% WNW 24 G 35 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.11" / 1.6" 40 03 AM Wed Feb 19 2025 12F 11F / 69% WNW 24 G 34 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.11" / 1.6" 41 04 AM Wed Feb 19 2025 12F 12F / 65% WNW 23 G 32 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.11" / 1.6" 42 05 AM Wed Feb 19 2025 13F 12F / 64% WNW 21 G 28 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.11" / 1.6" 43 06 AM Wed Feb 19 2025 13F 13F / 60% WNW 21 G 29 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.11" / 1.6" 44 07 AM Wed Feb 19 2025 14F 14F / 59% WNW 20 G 28 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.11" / 1.6" 45 08 AM Wed Feb 19 2025 15F 14F / 51% WNW 19 G 27 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.11" / 1.6" 46 09 AM Wed Feb 19 2025 16F 16F / 46% WNW 18 G 24 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.11" / 1.6" 47 10 AM Wed Feb 19 2025 17F 17F / 48% W 16 G 23 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.11" / 1.6" 48 11 AM Wed Feb 19 2025 26F 21F / 47% WSW 13 G 22 MPH 4300 FT 10:1 / 10% 0.00" / 0.0" 0.11" / 1.6"