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 31-Mar-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 12 PM Mon Mar 31 2025 29F 20F / 92% SSW 20 G 39 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Mon Mar 31 2025 32F 22F / 78% SW 22 G 42 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Mon Mar 31 2025 32F 22F / 68% SW 23 G 42 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Mon Mar 31 2025 32F 22F / 68% SW 22 G 43 MPH 7100 FT 9:1 / 11% 0.01" / 0.1" 0.01" / 0.1" 4 04 PM Mon Mar 31 2025 33F 23F / 69% SW 22 G 42 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 5 05 PM Mon Mar 31 2025 33F 23F / 65% WSW 19 G 31 MPH 7600 FT 13:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 6 06 PM Mon Mar 31 2025 30F 22F / 78% WSW 18 G 34 MPH 7500 FT 12:1 / 8% 0.00" / 0.0" 0.01" / 0.1" 7 07 PM Mon Mar 31 2025 28F 20F / 90% WSW 16 G 32 MPH 7400 FT 15:1 / 7% 0.00" / 0.0" 0.01" / 0.1" 8 08 PM Mon Mar 31 2025 26F 19F / 99% W 20 G 31 MPH 7200 FT 10:1 / 10% 0.02" / 0.2" 0.03" / 0.3" 9 09 PM Mon Mar 31 2025 24F 17F / 100% WNW 17 G 27 MPH 6200 FT 13:1 / 8% 0.08" / 1.0" 0.11" / 1.3" 10 10 PM Mon Mar 31 2025 23F 17F / 100% W 18 G 28 MPH 6500 FT 12:1 / 8% 0.06" / 0.7" 0.17" / 2.0" 11 11 PM Mon Mar 31 2025 20F 14F / 100% W 17 G 25 MPH 6100 FT 14:1 / 7% 0.15" / 2.1" 0.32" / 4.1" 12 12 AM Tue Apr 01 2025 20F 14F / 99% W 19 G 29 MPH 5800 FT 13:1 / 8% 0.08" / 1.0" 0.40" / 5.1" 13 01 AM Tue Apr 01 2025 18F 10F / 96% WNW 27 G 40 MPH 5200 FT 12:1 / 8% 0.05" / 0.6" 0.45" / 5.7" 14 02 AM Tue Apr 01 2025 15F 8F / 96% W 28 G 44 MPH 5000 FT 12:1 / 8% 0.11" / 1.3" 0.56" / 7.0" 15 03 AM Tue Apr 01 2025 15F 8F / 98% W 23 G 37 MPH 5100 FT 15:1 / 7% 0.06" / 0.9" 0.62" / 7.9" 16 04 AM Tue Apr 01 2025 14F 7F / 98% W 25 G 39 MPH 4700 FT 14:1 / 7% 0.10" / 1.4" 0.72" / 9.3" 17 05 AM Tue Apr 01 2025 13F 5F / 95% W 26 G 38 MPH 4300 FT 14:1 / 7% 0.07" / 1.0" 0.79" / 10.3" 18 06 AM Tue Apr 01 2025 10F 3F / 91% WNW 23 G 34 MPH ≤ KSLC 17:1 / 6% 0.01" / 0.2" 0.80" / 10.5" 19 07 AM Tue Apr 01 2025 11F 4F / 92% WNW 21 G 33 MPH ≤ KSLC 17:1 / 6% 0.02" / 0.3" 0.82" / 10.8" 20 08 AM Tue Apr 01 2025 10F 3F / 89% WNW 23 G 36 MPH ≤ KSLC 15:1 / 7% 0.01" / 0.2" 0.83" / 11.0" 21 09 AM Tue Apr 01 2025 10F 3F / 90% WNW 26 G 40 MPH ≤ KSLC 13:1 / 8% 0.04" / 0.5" 0.87" / 11.5" 22 10 AM Tue Apr 01 2025 12F 3F / 95% W 24 G 37 MPH ≤ KSLC 14:1 / 7% 0.08" / 1.1" 0.95" / 12.6" 23 11 AM Tue Apr 01 2025 12F 3F / 92% W 23 G 36 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 1.00" / 13.2" 24 12 PM Tue Apr 01 2025 15F 5F / 94% W 22 G 35 MPH ≤ KSLC 15:1 / 7% 0.04" / 0.6" 1.04" / 13.8" 25 01 PM Tue Apr 01 2025 17F 6F / 92% W 21 G 35 MPH ≤ KSLC 15:1 / 7% 0.06" / 0.9" 1.10" / 14.7" 26 02 PM Tue Apr 01 2025 16F 6F / 92% W 22 G 35 MPH ≤ KSLC 16:1 / 6% 0.04" / 0.6" 1.14" / 15.3" 27 03 PM Tue Apr 01 2025 17F 7F / 94% W 21 G 34 MPH ≤ KSLC 17:1 / 6% 0.02" / 0.3" 1.16" / 15.6" 28 04 PM Tue Apr 01 2025 19F 7F / 92% W 21 G 33 MPH ≤ KSLC 17:1 / 6% 0.01" / 0.2" 1.17" / 15.8" 29 05 PM Tue Apr 01 2025 18F 7F / 86% W 20 G 30 MPH 4300 FT 18:1 / 6% 0.00" / 0.0" 1.17" / 15.8" 30 06 PM Tue Apr 01 2025 17F 7F / 88% W 19 G 31 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 1.17" / 15.8" 31 07 PM Tue Apr 01 2025 15F 6F / 80% W 18 G 28 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.17" / 15.8" 32 08 PM Tue Apr 01 2025 11F 4F / 87% W 15 G 24 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.17" / 15.8" 33 09 PM Tue Apr 01 2025 9F 4F / 88% W 18 G 26 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.17" / 15.8" 34 10 PM Tue Apr 01 2025 9F 4F / 82% WNW 17 G 25 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.17" / 15.8" 35 11 PM Tue Apr 01 2025 9F 4F / 86% W 11 G 16 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 1.17" / 15.8" 36 12 AM Wed Apr 02 2025 9F 5F / 82% WSW 14 G 19 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 1.17" / 15.8" 37 01 AM Wed Apr 02 2025 9F 5F / 85% WSW 11 G 17 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 1.17" / 15.8" 38 02 AM Wed Apr 02 2025 8F 4F / 85% W 11 G 15 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.17" / 15.8" 39 03 AM Wed Apr 02 2025 8F 3F / 86% W 9 G 11 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.17" / 15.8" 40 04 AM Wed Apr 02 2025 8F 3F / 85% WSW 8 G 12 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.17" / 15.8" 41 05 AM Wed Apr 02 2025 7F 2F / 98% WNW 8 G 11 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 1.17" / 15.8" 42 06 AM Wed Apr 02 2025 7F 2F / 92% WNW 8 G 10 MPH ≤ KSLC 26:1 / 4% 0.00" / 0.0" 1.17" / 15.8" 43 07 AM Wed Apr 02 2025 7F 3F / 89% WSW 7 G 9 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 1.17" / 15.8" 44 08 AM Wed Apr 02 2025 8F 4F / 85% WSW 6 G 11 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 1.17" / 15.8" 45 09 AM Wed Apr 02 2025 11F 6F / 82% E 6 G 9 MPH ≤ KSLC 26:1 / 4% 0.00" / 0.0" 1.17" / 15.8" 46 10 AM Wed Apr 02 2025 13F 8F / 85% E 5 G 10 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 1.17" / 15.8" 47 11 AM Wed Apr 02 2025 16F 9F / 92% SE 3 G 7 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 1.17" / 15.8" 48 12 PM Wed Apr 02 2025 18F 11F / 88% E 3 G 7 MPH ≤ KSLC 26:1 / 4% 0.00" / 0.0" 1.17" / 15.8"