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 01-Apr-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 Apr 01 2025 17F 10F / 94% WNW 26 G 43 MPH 5000 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Tue Apr 01 2025 17F 11F / 76% WNW 27 G 41 MPH 4900 FT 14:1 / 7% 0.02" / 0.3" 0.02" / 0.3" 2 02 AM Tue Apr 01 2025 15F 9F / 96% WNW 24 G 34 MPH 4800 FT 16:1 / 6% 0.00" / 0.0" 0.02" / 0.3" 3 03 AM Tue Apr 01 2025 15F 9F / 93% WNW 22 G 31 MPH 4900 FT 17:1 / 6% 0.01" / 0.2" 0.03" / 0.5" 4 04 AM Tue Apr 01 2025 13F 8F / 91% W 20 G 32 MPH 4700 FT 15:1 / 7% 0.00" / 0.0" 0.03" / 0.5" 5 05 AM Tue Apr 01 2025 13F 7F / 91% W 20 G 30 MPH 4600 FT 18:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 6 06 AM Tue Apr 01 2025 13F 7F / 94% WNW 16 G 25 MPH 4600 FT 18:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 7 07 AM Tue Apr 01 2025 14F 7F / 92% W 22 G 34 MPH 4800 FT 14:1 / 7% 0.02" / 0.3" 0.05" / 0.8" 8 08 AM Tue Apr 01 2025 13F 6F / 91% WNW 22 G 32 MPH 4700 FT 19:1 / 5% 0.03" / 0.6" 0.08" / 1.4" 9 09 AM Tue Apr 01 2025 14F 7F / 92% WNW 26 G 39 MPH 4400 FT 15:1 / 7% 0.09" / 1.3" 0.17" / 2.7" 10 10 AM Tue Apr 01 2025 13F 6F / 93% WNW 22 G 35 MPH 4300 FT 19:1 / 5% 0.02" / 0.4" 0.19" / 3.1" 11 11 AM Tue Apr 01 2025 13F 5F / 86% WNW 18 G 31 MPH 4300 FT 19:1 / 5% 0.02" / 0.4" 0.21" / 3.5" 12 12 PM Tue Apr 01 2025 15F 6F / 90% WNW 20 G 32 MPH 4300 FT 18:1 / 6% 0.01" / 0.2" 0.22" / 3.7" 13 01 PM Tue Apr 01 2025 17F 7F / 87% WNW 20 G 32 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 0.22" / 3.7" 14 02 PM Tue Apr 01 2025 18F 9F / 89% WNW 20 G 34 MPH 4300 FT 16:1 / 6% 0.01" / 0.2" 0.23" / 3.9" 15 03 PM Tue Apr 01 2025 19F 8F / 87% WNW 22 G 32 MPH ≤ KSLC 16:1 / 6% 0.01" / 0.2" 0.24" / 4.1" 16 04 PM Tue Apr 01 2025 19F 7F / 88% WNW 24 G 37 MPH 4400 FT 15:1 / 7% 0.00" / 0.0" 0.24" / 4.1" 17 05 PM Tue Apr 01 2025 19F 7F / 77% WNW 18 G 27 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.24" / 4.1" 18 06 PM Tue Apr 01 2025 15F 5F / 85% WNW 22 G 34 MPH 4300 FT 16:1 / 6% 0.02" / 0.3" 0.26" / 4.4" 19 07 PM Tue Apr 01 2025 13F 5F / 83% WNW 19 G 29 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.26" / 4.4" 20 08 PM Tue Apr 01 2025 12F 4F / 88% WNW 21 G 32 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.26" / 4.4" 21 09 PM Tue Apr 01 2025 9F 3F / 77% WNW 19 G 29 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.26" / 4.4" 22 10 PM Tue Apr 01 2025 7F 3F / 73% WNW 20 G 31 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.26" / 4.4" 23 11 PM Tue Apr 01 2025 8F 3F / 73% WNW 21 G 31 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.26" / 4.4" 24 12 AM Wed Apr 02 2025 8F 3F / 76% WNW 17 G 25 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.26" / 4.4" 25 01 AM Wed Apr 02 2025 8F 3F / 82% W 16 G 22 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.26" / 4.4" 26 02 AM Wed Apr 02 2025 8F 2F / 94% W 14 G 20 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.26" / 4.4" 27 03 AM Wed Apr 02 2025 7F 3F / 89% W 16 G 23 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 0.26" / 4.4" 28 04 AM Wed Apr 02 2025 7F 2F / 89% WNW 15 G 20 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.26" / 4.4" 29 05 AM Wed Apr 02 2025 7F 2F / 94% WNW 13 G 17 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.26" / 4.4" 30 06 AM Wed Apr 02 2025 8F 2F / 95% WNW 13 G 19 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 0.26" / 4.4" 31 07 AM Wed Apr 02 2025 9F 3F / 91% WNW 12 G 17 MPH ≤ KSLC 26:1 / 4% 0.00" / 0.0" 0.26" / 4.4" 32 08 AM Wed Apr 02 2025 9F 3F / 90% SE 7 G 13 MPH ≤ KSLC 26:1 / 4% 0.02" / 0.5" 0.28" / 4.9" 33 09 AM Wed Apr 02 2025 10F 4F / 89% WNW 9 G 12 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 0.28" / 4.9" 34 10 AM Wed Apr 02 2025 12F 5F / 86% NW 8 G 12 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 0.28" / 4.9" 35 11 AM Wed Apr 02 2025 15F 7F / 93% NW 6 G 9 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 0.28" / 4.9" 36 12 PM Wed Apr 02 2025 18F 10F / 89% NW 6 G 9 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 0.28" / 4.9" 37 01 PM Wed Apr 02 2025 18F 11F / 93% WNW 4 G 9 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 0.28" / 4.9" 38 02 PM Wed Apr 02 2025 18F 11F / 93% NNE 10 G 16 MPH 4300 FT 23:1 / 4% 0.01" / 0.2" 0.29" / 5.1" 39 03 PM Wed Apr 02 2025 20F 12F / 86% NE 9 G 14 MPH 4500 FT 22:1 / 5% 0.07" / 1.5" 0.36" / 6.6" 40 04 PM Wed Apr 02 2025 20F 12F / 90% NNE 6 G 12 MPH 4700 FT 22:1 / 5% 0.04" / 0.9" 0.40" / 7.5" 41 05 PM Wed Apr 02 2025 21F 13F / 83% NNE 4 G 10 MPH 4700 FT 22:1 / 5% 0.01" / 0.2" 0.41" / 7.7" 42 06 PM Wed Apr 02 2025 20F 12F / 83% NNW 5 G 8 MPH 4800 FT 21:1 / 5% 0.00" / 0.0" 0.41" / 7.7" 43 07 PM Wed Apr 02 2025 18F 11F / 82% ESE 3 G 5 MPH 4700 FT 22:1 / 5% 0.00" / 0.0" 0.41" / 7.7" 44 08 PM Wed Apr 02 2025 13F 9F / 77% ESE 5 G 8 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 0.41" / 7.7" 45 09 PM Wed Apr 02 2025 11F 7F / 73% NW 8 G 10 MPH 4500 FT 21:1 / 5% 0.00" / 0.0" 0.41" / 7.7" 46 10 PM Wed Apr 02 2025 11F 8F / 71% NNE 7 G 11 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.41" / 7.7" 47 11 PM Wed Apr 02 2025 10F 8F / 70% ENE 9 G 12 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.41" / 7.7" 48 12 AM Thu Apr 03 2025 10F 7F / 71% E 7 G 13 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.41" / 7.7"