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 18-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 AM Tue Mar 18 2025 23F 16F / 89% SW 21 G 41 MPH 5100 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Tue Mar 18 2025 20F 13F / 95% W 18 G 33 MPH 4800 FT 13:1 / 8% 0.04" / 0.5" 0.04" / 0.5" 2 02 AM Tue Mar 18 2025 18F 11F / 97% WNW 26 G 40 MPH 4800 FT 16:1 / 6% 0.14" / 2.2" 0.18" / 2.7" 3 03 AM Tue Mar 18 2025 17F 10F / 98% WNW 25 G 39 MPH 4600 FT 15:1 / 7% 0.10" / 1.5" 0.28" / 4.2" 4 04 AM Tue Mar 18 2025 16F 10F / 97% WNW 22 G 36 MPH 4600 FT 14:1 / 7% 0.04" / 0.6" 0.32" / 4.8" 5 05 AM Tue Mar 18 2025 15F 8F / 93% WNW 21 G 33 MPH 4600 FT 17:1 / 6% 0.05" / 0.8" 0.37" / 5.6" 6 06 AM Tue Mar 18 2025 14F 8F / 98% WNW 22 G 34 MPH 4600 FT 15:1 / 7% 0.02" / 0.3" 0.39" / 5.9" 7 07 AM Tue Mar 18 2025 14F 7F / 97% WNW 25 G 40 MPH 4600 FT 15:1 / 7% 0.06" / 0.9" 0.45" / 6.8" 8 08 AM Tue Mar 18 2025 13F 6F / 90% WNW 29 G 44 MPH ≤ KSLC 14:1 / 7% 0.04" / 0.6" 0.49" / 7.4" 9 09 AM Tue Mar 18 2025 12F 5F / 91% NW 31 G 48 MPH ≤ KSLC 13:1 / 8% 0.06" / 0.8" 0.55" / 8.2" 10 10 AM Tue Mar 18 2025 11F 5F / 93% NW 30 G 46 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 0.60" / 8.8" 11 11 AM Tue Mar 18 2025 12F 4F / 89% NW 28 G 45 MPH ≤ KSLC 14:1 / 7% 0.04" / 0.6" 0.64" / 9.4" 12 12 PM Tue Mar 18 2025 13F 5F / 90% NW 29 G 45 MPH ≤ KSLC 15:1 / 7% 0.04" / 0.6" 0.68" / 10.0" 13 01 PM Tue Mar 18 2025 15F 5F / 87% WNW 28 G 42 MPH ≤ KSLC 14:1 / 7% 0.05" / 0.7" 0.73" / 10.7" 14 02 PM Tue Mar 18 2025 14F 5F / 89% WNW 31 G 48 MPH ≤ KSLC 12:1 / 8% 0.02" / 0.2" 0.75" / 10.9" 15 03 PM Tue Mar 18 2025 17F 6F / 96% WNW 28 G 40 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 0.80" / 11.5" 16 04 PM Tue Mar 18 2025 16F 5F / 98% WNW 28 G 42 MPH 4300 FT 13:1 / 8% 0.10" / 1.3" 0.90" / 12.8" 17 05 PM Tue Mar 18 2025 15F 4F / 100% WNW 30 G 45 MPH 4300 FT 14:1 / 7% 0.02" / 0.3" 0.92" / 13.1" 18 06 PM Tue Mar 18 2025 13F 4F / 94% NW 28 G 43 MPH ≤ KSLC 13:1 / 8% 0.06" / 0.8" 0.98" / 13.9" 19 07 PM Tue Mar 18 2025 11F 3F / 95% WNW 32 G 47 MPH ≤ KSLC 12:1 / 8% 0.22" / 2.6" 1.20" / 16.5" 20 08 PM Tue Mar 18 2025 10F 3F / 92% NW 30 G 45 MPH ≤ KSLC 13:1 / 8% 0.08" / 1.0" 1.28" / 17.5" 21 09 PM Tue Mar 18 2025 9F 2F / 85% NW 27 G 43 MPH ≤ KSLC 13:1 / 8% 0.01" / 0.1" 1.29" / 17.6" 22 10 PM Tue Mar 18 2025 8F 1F / 100% NW 25 G 40 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 1.29" / 17.6" 23 11 PM Tue Mar 18 2025 7F 2F / 93% NW 23 G 38 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 24 12 AM Wed Mar 19 2025 6F 1F / 86% NW 22 G 35 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 25 01 AM Wed Mar 19 2025 4F 1F / 83% NW 22 G 33 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 26 02 AM Wed Mar 19 2025 4F 1F / 77% NW 23 G 32 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 27 03 AM Wed Mar 19 2025 4F 1F / 75% NW 20 G 30 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 28 04 AM Wed Mar 19 2025 4F 1F / 83% NW 18 G 28 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 29 05 AM Wed Mar 19 2025 2F 0F / 92% NW 18 G 24 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 30 06 AM Wed Mar 19 2025 2F 0F / 97% NW 17 G 23 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 31 07 AM Wed Mar 19 2025 3F 1F / 87% NW 17 G 22 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 32 08 AM Wed Mar 19 2025 3F 1F / 78% NW 17 G 25 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 33 09 AM Wed Mar 19 2025 4F 2F / 76% NW 18 G 23 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 34 10 AM Wed Mar 19 2025 7F 5F / 67% NW 18 G 22 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 35 11 AM Wed Mar 19 2025 12F 7F / 63% NW 16 G 21 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 36 12 PM Wed Mar 19 2025 16F 9F / 59% NW 13 G 20 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 37 01 PM Wed Mar 19 2025 19F 11F / 61% WNW 12 G 19 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 38 02 PM Wed Mar 19 2025 20F 13F / 76% WNW 13 G 15 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.29" / 17.6" 39 03 PM Wed Mar 19 2025 21F 14F / 91% WNW 12 G 16 MPH 4300 FT 16:1 / 6% 0.00" / 0.0" 1.29" / 17.6" 40 04 PM Wed Mar 19 2025 21F 15F / 45% WNW 13 G 19 MPH 4500 FT 14:1 / 7% 0.00" / 0.0" 1.29" / 17.6" 41 05 PM Wed Mar 19 2025 21F 17F / 51% WNW 13 G 20 MPH 4600 FT 13:1 / 8% 0.00" / 0.0" 1.29" / 17.6" 42 06 PM Wed Mar 19 2025 21F 18F / 48% W 15 G 22 MPH 4600 FT 12:1 / 8% 0.00" / 0.0" 1.29" / 17.6" 43 07 PM Wed Mar 19 2025 19F 17F / 49% W 17 G 24 MPH 4600 FT 10:1 / 10% 0.00" / 0.0" 1.29" / 17.6" 44 08 PM Wed Mar 19 2025 15F 15F / 50% W 18 G 26 MPH 4300 FT 9:1 / 11% 0.00" / 0.0" 1.29" / 17.6" 45 09 PM Wed Mar 19 2025 16F 15F / 49% W 18 G 27 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 1.29" / 17.6" 46 10 PM Wed Mar 19 2025 17F 15F / 54% W 21 G 32 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 1.29" / 17.6" 47 11 PM Wed Mar 19 2025 17F 15F / 59% W 21 G 32 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 1.29" / 17.6" 48 12 AM Thu Mar 20 2025 18F 16F / 72% W 22 G 35 MPH ≤ KSLC 12:1 / 8% 0.01" / 0.1" 1.30" / 17.7"