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 02-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 Wed Apr 02 2025 19F 11F / 93% SSE 3 G 6 MPH 4700 FT 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Wed Apr 02 2025 19F 12F / 97% SW 5 G 9 MPH 4800 FT 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Wed Apr 02 2025 22F 13F / 89% SSW 7 G 15 MPH 5000 FT 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Wed Apr 02 2025 19F 12F / 97% E 6 G 13 MPH 5000 FT 21:1 / 5% 0.01" / 0.2" 0.01" / 0.2" 4 04 PM Wed Apr 02 2025 20F 11F / 86% WNW 5 G 11 MPH 5000 FT 21:1 / 5% 0.05" / 1.0" 0.06" / 1.2" 5 05 PM Wed Apr 02 2025 20F 11F / 80% NW 7 G 12 MPH 4600 FT 23:1 / 4% 0.00" / 0.0" 0.06" / 1.2" 6 06 PM Wed Apr 02 2025 19F 10F / 88% NW 6 G 13 MPH 4800 FT 21:1 / 5% 0.00" / 0.0" 0.06" / 1.2" 7 07 PM Wed Apr 02 2025 17F 9F / 91% NNW 10 G 15 MPH 4600 FT 22:1 / 5% 0.01" / 0.2" 0.07" / 1.4" 8 08 PM Wed Apr 02 2025 14F 8F / 86% NE 9 G 12 MPH 4600 FT 22:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 9 09 PM Wed Apr 02 2025 12F 7F / 73% E 9 G 13 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 10 10 PM Wed Apr 02 2025 11F 7F / 81% ESE 8 G 12 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 11 11 PM Wed Apr 02 2025 11F 7F / 77% ESE 9 G 13 MPH 4500 FT 22:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 12 12 AM Thu Apr 03 2025 11F 8F / 75% ESE 9 G 13 MPH 4400 FT 22:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 13 01 AM Thu Apr 03 2025 11F 8F / 78% E 8 G 11 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 14 02 AM Thu Apr 03 2025 11F 8F / 79% ESE 8 G 13 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 15 03 AM Thu Apr 03 2025 12F 8F / 79% ESE 7 G 12 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.07" / 1.4" 16 04 AM Thu Apr 03 2025 12F 8F / 88% ESE 9 G 16 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.07" / 1.4" 17 05 AM Thu Apr 03 2025 13F 8F / 91% SE 9 G 15 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.07" / 1.4" 18 06 AM Thu Apr 03 2025 13F 8F / 84% ESE 10 G 18 MPH ≤ KSLC 19:1 / 5% 0.01" / 0.2" 0.08" / 1.6" 19 07 AM Thu Apr 03 2025 13F 8F / 80% ESE 9 G 14 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.08" / 1.6" 20 08 AM Thu Apr 03 2025 12F 8F / 78% ESE 7 G 14 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.08" / 1.6" 21 09 AM Thu Apr 03 2025 13F 8F / 78% ESE 7 G 12 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.08" / 1.6" 22 10 AM Thu Apr 03 2025 16F 10F / 78% ESE 6 G 11 MPH 4600 FT 21:1 / 5% 0.00" / 0.0" 0.08" / 1.6" 23 11 AM Thu Apr 03 2025 18F 11F / 82% ESE 4 G 9 MPH 4700 FT 22:1 / 5% 0.00" / 0.0" 0.08" / 1.6" 24 12 PM Thu Apr 03 2025 20F 13F / 83% E 4 G 7 MPH 4800 FT 22:1 / 5% 0.00" / 0.0" 0.08" / 1.6" 25 01 PM Thu Apr 03 2025 22F 14F / 86% ENE 4 G 10 MPH 4900 FT 22:1 / 5% 0.00" / 0.0" 0.08" / 1.6" 26 02 PM Thu Apr 03 2025 23F 15F / 93% N 5 G 11 MPH 5000 FT 21:1 / 5% 0.00" / 0.0" 0.08" / 1.6" 27 03 PM Thu Apr 03 2025 23F 15F / 95% NW 11 G 17 MPH 5100 FT 18:1 / 6% 0.00" / 0.0" 0.08" / 1.6" 28 04 PM Thu Apr 03 2025 24F 15F / 91% NW 12 G 19 MPH 5100 FT 17:1 / 6% 0.01" / 0.2" 0.09" / 1.8" 29 05 PM Thu Apr 03 2025 23F 14F / 83% NW 10 G 16 MPH 5100 FT 20:1 / 5% 0.01" / 0.2" 0.10" / 2.0" 30 06 PM Thu Apr 03 2025 21F 14F / 90% NE 10 G 15 MPH 5300 FT 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 31 07 PM Thu Apr 03 2025 20F 12F / 85% NNW 11 G 16 MPH 5500 FT 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 32 08 PM Thu Apr 03 2025 17F 11F / 88% N 11 G 18 MPH 5400 FT 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 33 09 PM Thu Apr 03 2025 15F 9F / 99% N 12 G 20 MPH 5500 FT 18:1 / 6% 0.00" / 0.0" 0.10" / 2.0" 34 10 PM Thu Apr 03 2025 15F 11F / 82% N 10 G 16 MPH 5500 FT 21:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 35 11 PM Thu Apr 03 2025 14F 10F / 79% NNW 11 G 18 MPH 5300 FT 20:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 36 12 AM Fri Apr 04 2025 13F 10F / 78% N 12 G 20 MPH 4800 FT 18:1 / 6% 0.00" / 0.0" 0.10" / 2.0" 37 01 AM Fri Apr 04 2025 11F 10F / 63% N 13 G 18 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 2.0" 38 02 AM Fri Apr 04 2025 11F 10F / 57% N 14 G 20 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 39 03 AM Fri Apr 04 2025 10F 9F / 53% NNE 14 G 17 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 2.0" 40 04 AM Fri Apr 04 2025 10F 8F / 65% NNE 13 G 20 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 2.0" 41 05 AM Fri Apr 04 2025 9F 7F / 73% N 15 G 21 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 42 06 AM Fri Apr 04 2025 10F 8F / 69% NNE 15 G 22 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 43 07 AM Fri Apr 04 2025 10F 8F / 73% NNE 12 G 18 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 44 08 AM Fri Apr 04 2025 10F 8F / 77% NNE 12 G 17 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 45 09 AM Fri Apr 04 2025 11F 9F / 72% NE 9 G 13 MPH 4300 FT 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 46 10 AM Fri Apr 04 2025 17F 14F / 77% NNE 9 G 15 MPH 4700 FT 19:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 47 11 AM Fri Apr 04 2025 20F 15F / 65% NNE 7 G 12 MPH 4800 FT 20:1 / 5% 0.00" / 0.0" 0.10" / 2.0" 48 12 PM Fri Apr 04 2025 22F 15F / 78% N 6 G 14 MPH 4900 FT 20:1 / 5% 0.00" / 0.0" 0.10" / 2.0"