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 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 06 AM Tue Apr 01 2025 13F 7F / 95% WNW 18 G 27 MPH 4700 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Tue Apr 01 2025 13F 6F / 88% WNW 16 G 23 MPH 4800 FT 19:1 / 5% 0.01" / 0.2" 0.01" / 0.2" 2 08 AM Tue Apr 01 2025 14F 7F / 96% WNW 27 G 40 MPH 4800 FT 15:1 / 7% 0.10" / 1.5" 0.11" / 1.7" 3 09 AM Tue Apr 01 2025 12F 6F / 90% WNW 22 G 32 MPH 4700 FT 18:1 / 6% 0.21" / 3.8" 0.32" / 5.5" 4 10 AM Tue Apr 01 2025 13F 5F / 88% NW 18 G 27 MPH 4600 FT 18:1 / 6% 0.28" / 5.0" 0.60" / 10.5" 5 11 AM Tue Apr 01 2025 14F 6F / 91% WNW 19 G 28 MPH 4400 FT 18:1 / 6% 0.17" / 3.1" 0.77" / 13.6" 6 12 PM Tue Apr 01 2025 16F 6F / 94% WNW 19 G 30 MPH 4400 FT 22:1 / 5% 0.16" / 3.5" 0.93" / 17.1" 7 01 PM Tue Apr 01 2025 17F 9F / 85% WNW 20 G 30 MPH 4300 FT 22:1 / 5% 0.04" / 0.9" 0.97" / 18.0" 8 02 PM Tue Apr 01 2025 17F 8F / 100% WNW 21 G 31 MPH 4300 FT 20:1 / 5% 0.03" / 0.6" 1.00" / 18.6" 9 03 PM Tue Apr 01 2025 19F 9F / 87% WNW 21 G 35 MPH 4300 FT 16:1 / 6% 0.02" / 0.3" 1.02" / 18.9" 10 04 PM Tue Apr 01 2025 20F 8F / 80% WNW 22 G 34 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 1.02" / 18.9" 11 05 PM Tue Apr 01 2025 18F 7F / 88% WNW 19 G 32 MPH 4400 FT 19:1 / 5% 0.01" / 0.2" 1.03" / 19.1" 12 06 PM Tue Apr 01 2025 15F 5F / 92% WNW 19 G 28 MPH 4400 FT 19:1 / 5% 0.03" / 0.6" 1.06" / 19.7" 13 07 PM Tue Apr 01 2025 14F 6F / 84% WNW 20 G 30 MPH 4300 FT 18:1 / 6% 0.01" / 0.2" 1.07" / 19.9" 14 08 PM Tue Apr 01 2025 13F 5F / 84% WNW 19 G 27 MPH 4300 FT 19:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 15 09 PM Tue Apr 01 2025 10F 4F / 85% WNW 19 G 29 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 16 10 PM Tue Apr 01 2025 9F 4F / 80% WNW 18 G 27 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.07" / 19.9" 17 11 PM Tue Apr 01 2025 8F 4F / 85% WNW 16 G 21 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 18 12 AM Wed Apr 02 2025 8F 4F / 75% WNW 16 G 20 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 19 01 AM Wed Apr 02 2025 8F 3F / 77% WNW 16 G 21 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 20 02 AM Wed Apr 02 2025 7F 3F / 80% WNW 15 G 22 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 21 03 AM Wed Apr 02 2025 7F 3F / 85% W 14 G 17 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.07" / 19.9" 22 04 AM Wed Apr 02 2025 7F 3F / 83% W 14 G 18 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 23 05 AM Wed Apr 02 2025 7F 3F / 85% WNW 12 G 17 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 24 06 AM Wed Apr 02 2025 7F 3F / 86% WNW 12 G 15 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 25 07 AM Wed Apr 02 2025 7F 3F / 82% WNW 11 G 16 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 26 08 AM Wed Apr 02 2025 6F 2F / 77% NW 10 G 16 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 1.07" / 19.9" 27 09 AM Wed Apr 02 2025 8F 4F / 73% NW 9 G 13 MPH 4300 FT 22:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 28 10 AM Wed Apr 02 2025 11F 6F / 74% SE 5 G 9 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 29 11 AM Wed Apr 02 2025 15F 7F / 77% SE 7 G 8 MPH 4600 FT 25:1 / 4% 0.00" / 0.0" 1.07" / 19.9" 30 12 PM Wed Apr 02 2025 17F 9F / 88% ESE 4 G 6 MPH 4600 FT 24:1 / 4% 0.00" / 0.0" 1.07" / 19.9" 31 01 PM Wed Apr 02 2025 18F 11F / 87% NW 7 G 12 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 1.07" / 19.9" 32 02 PM Wed Apr 02 2025 19F 11F / 90% NNW 8 G 12 MPH 4600 FT 22:1 / 5% 0.01" / 0.2" 1.08" / 20.1" 33 03 PM Wed Apr 02 2025 20F 12F / 82% NNW 8 G 13 MPH 4700 FT 21:1 / 5% 0.01" / 0.2" 1.09" / 20.3" 34 04 PM Wed Apr 02 2025 21F 11F / 78% NNW 7 G 12 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 35 05 PM Wed Apr 02 2025 20F 11F / 80% NW 9 G 15 MPH 4800 FT 22:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 36 06 PM Wed Apr 02 2025 18F 10F / 82% NNW 10 G 15 MPH 4900 FT 21:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 37 07 PM Wed Apr 02 2025 18F 11F / 79% N 8 G 14 MPH 4700 FT 22:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 38 08 PM Wed Apr 02 2025 14F 10F / 70% NNE 7 G 12 MPH 4800 FT 21:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 39 09 PM Wed Apr 02 2025 12F 9F / 66% E 8 G 12 MPH 4700 FT 20:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 40 10 PM Wed Apr 02 2025 11F 8F / 67% E 7 G 13 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 41 11 PM Wed Apr 02 2025 9F 8F / 66% ESE 9 G 11 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 42 12 AM Thu Apr 03 2025 10F 8F / 68% ESE 8 G 11 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 43 01 AM Thu Apr 03 2025 9F 8F / 75% ESE 10 G 13 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 44 02 AM Thu Apr 03 2025 11F 8F / 78% SE 7 G 10 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.09" / 20.3" 45 03 AM Thu Apr 03 2025 12F 7F / 85% ESE 9 G 14 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.09" / 20.3" 46 04 AM Thu Apr 03 2025 11F 6F / 90% E 10 G 17 MPH ≤ KSLC 19:1 / 5% 0.01" / 0.2" 1.10" / 20.5" 47 05 AM Thu Apr 03 2025 12F 7F / 89% ESE 11 G 21 MPH ≤ KSLC 18:1 / 6% 0.02" / 0.4" 1.12" / 20.9" 48 06 AM Thu Apr 03 2025 11F 7F / 87% ESE 12 G 23 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.12" / 20.9"