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 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 PM Tue Apr 01 2025 14F 6F / 93% WNW 20 G 29 MPH 4300 FT 27:1 / 4% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Tue Apr 01 2025 17F 8F / 96% WNW 19 G 30 MPH 4400 FT 25:1 / 4% 0.02" / 0.5" 0.02" / 0.5" 2 02 PM Tue Apr 01 2025 16F 7F / 96% WNW 24 G 35 MPH 4300 FT 21:1 / 5% 0.01" / 0.2" 0.03" / 0.7" 3 03 PM Tue Apr 01 2025 18F 8F / 85% WNW 23 G 36 MPH 4300 FT 19:1 / 5% 0.02" / 0.4" 0.05" / 1.1" 4 04 PM Tue Apr 01 2025 19F 7F / 83% WNW 22 G 35 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 5 05 PM Tue Apr 01 2025 18F 7F / 90% WNW 24 G 36 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 6 06 PM Tue Apr 01 2025 17F 7F / 74% WNW 22 G 33 MPH 4300 FT 18:1 / 6% 0.00" / 0.0" 0.05" / 1.1" 7 07 PM Tue Apr 01 2025 15F 7F / 96% WNW 11 G 18 MPH ≤ KSLC 20:1 / 5% 0.01" / 0.2" 0.06" / 1.3" 8 08 PM Tue Apr 01 2025 12F 5F / 87% WNW 22 G 33 MPH 4300 FT 18:1 / 6% 0.05" / 0.9" 0.11" / 2.2" 9 09 PM Tue Apr 01 2025 9F 3F / 80% WNW 20 G 30 MPH 4300 FT 19:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 10 10 PM Tue Apr 01 2025 8F 3F / 86% WNW 18 G 27 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 11 11 PM Tue Apr 01 2025 8F 3F / 84% WNW 19 G 28 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 12 12 AM Wed Apr 02 2025 8F 3F / 87% WNW 18 G 27 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.11" / 2.2" 13 01 AM Wed Apr 02 2025 8F 3F / 87% WNW 17 G 24 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.11" / 2.2" 14 02 AM Wed Apr 02 2025 8F 3F / 83% WNW 17 G 24 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 15 03 AM Wed Apr 02 2025 7F 3F / 83% WNW 14 G 21 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 16 04 AM Wed Apr 02 2025 7F 3F / 86% WNW 13 G 19 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 17 05 AM Wed Apr 02 2025 8F 3F / 86% WNW 12 G 15 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 0.11" / 2.2" 18 06 AM Wed Apr 02 2025 8F 3F / 88% WNW 11 G 14 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 0.11" / 2.2" 19 07 AM Wed Apr 02 2025 8F 3F / 86% WNW 9 G 12 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 0.11" / 2.2" 20 08 AM Wed Apr 02 2025 7F 3F / 87% WNW 7 G 12 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 0.11" / 2.2" 21 09 AM Wed Apr 02 2025 8F 4F / 81% W 7 G 10 MPH 4300 FT 25:1 / 4% 0.00" / 0.0" 0.11" / 2.2" 22 10 AM Wed Apr 02 2025 12F 6F / 83% W 6 G 8 MPH 4400 FT 25:1 / 4% 0.00" / 0.0" 0.11" / 2.2" 23 11 AM Wed Apr 02 2025 16F 8F / 81% W 4 G 7 MPH 4500 FT 25:1 / 4% 0.00" / 0.0" 0.11" / 2.2" 24 12 PM Wed Apr 02 2025 18F 10F / 91% WNW 7 G 10 MPH 4400 FT 22:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 25 01 PM Wed Apr 02 2025 19F 11F / 95% WNW 7 G 13 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.11" / 2.2" 26 02 PM Wed Apr 02 2025 18F 11F / 84% WNW 7 G 12 MPH 4400 FT 23:1 / 4% 0.05" / 1.2" 0.16" / 3.4" 27 03 PM Wed Apr 02 2025 19F 11F / 88% NNE 7 G 12 MPH 4800 FT 22:1 / 5% 0.02" / 0.4" 0.18" / 3.8" 28 04 PM Wed Apr 02 2025 19F 11F / 89% WNW 4 G 9 MPH 4500 FT 21:1 / 5% 0.08" / 1.7" 0.26" / 5.5" 29 05 PM Wed Apr 02 2025 19F 10F / 94% S 6 G 11 MPH 4500 FT 22:1 / 5% 0.04" / 0.9" 0.30" / 6.4" 30 06 PM Wed Apr 02 2025 17F 9F / 87% NNW 6 G 12 MPH 4500 FT 22:1 / 5% 0.03" / 0.7" 0.33" / 7.1" 31 07 PM Wed Apr 02 2025 17F 9F / 93% NE 7 G 9 MPH 4600 FT 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 32 08 PM Wed Apr 02 2025 15F 8F / 84% SE 7 G 10 MPH 4600 FT 23:1 / 4% 0.00" / 0.0" 0.33" / 7.1" 33 09 PM Wed Apr 02 2025 11F 7F / 86% SE 8 G 11 MPH 4600 FT 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 34 10 PM Wed Apr 02 2025 10F 6F / 79% ESE 8 G 10 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 35 11 PM Wed Apr 02 2025 9F 7F / 75% ESE 8 G 10 MPH 4600 FT 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 36 12 AM Thu Apr 03 2025 10F 8F / 68% ESE 7 G 10 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 37 01 AM Thu Apr 03 2025 11F 9F / 63% SSE 9 G 9 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 38 02 AM Thu Apr 03 2025 10F 7F / 65% S 8 G 10 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 39 03 AM Thu Apr 03 2025 10F 7F / 69% SE 8 G 10 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 40 04 AM Thu Apr 03 2025 11F 7F / 74% SE 8 G 15 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 41 05 AM Thu Apr 03 2025 11F 7F / 76% ESE 10 G 15 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 42 06 AM Thu Apr 03 2025 10F 6F / 77% ESE 10 G 16 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 43 07 AM Thu Apr 03 2025 9F 5F / 76% ESE 9 G 14 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 44 08 AM Thu Apr 03 2025 10F 7F / 79% ESE 6 G 13 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 0.33" / 7.1" 45 09 AM Thu Apr 03 2025 11F 8F / 74% ESE 6 G 10 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 0.33" / 7.1" 46 10 AM Thu Apr 03 2025 16F 12F / 76% ESE 5 G 11 MPH 4400 FT 23:1 / 4% 0.00" / 0.0" 0.33" / 7.1" 47 11 AM Thu Apr 03 2025 20F 13F / 75% ESE 4 G 9 MPH 4600 FT 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1" 48 12 PM Thu Apr 03 2025 22F 15F / 77% E 3 G 8 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.33" / 7.1"