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 00Z 19-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 06 PM Tue Mar 18 2025 12F 5F / 89% WNW 29 G 45 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Tue Mar 18 2025 12F 5F / 96% WNW 26 G 38 MPH ≤ KSLC 15:1 / 7% 0.01" / 0.2" 0.01" / 0.2" 2 08 PM Tue Mar 18 2025 11F 3F / 100% WNW 27 G 42 MPH ≤ KSLC 14:1 / 7% 0.03" / 0.4" 0.04" / 0.6" 3 09 PM Tue Mar 18 2025 10F 3F / 95% NW 24 G 35 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.04" / 0.6" 4 10 PM Tue Mar 18 2025 9F 3F / 88% NW 27 G 44 MPH ≤ KSLC 14:1 / 7% 0.06" / 0.8" 0.10" / 1.4" 5 11 PM Tue Mar 18 2025 9F 3F / 93% NW 26 G 41 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.10" / 1.4" 6 12 AM Wed Mar 19 2025 9F 3F / 96% NW 25 G 39 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 7 01 AM Wed Mar 19 2025 9F 2F / 93% NW 25 G 37 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 8 02 AM Wed Mar 19 2025 8F 3F / 84% NW 22 G 33 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 9 03 AM Wed Mar 19 2025 7F 3F / 94% NW 20 G 31 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 10 04 AM Wed Mar 19 2025 8F 2F / 93% NW 19 G 28 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 11 05 AM Wed Mar 19 2025 7F 2F / 86% NW 19 G 29 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 12 06 AM Wed Mar 19 2025 5F 1F / 90% NW 19 G 28 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 13 07 AM Wed Mar 19 2025 5F 1F / 82% NNW 17 G 26 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 14 08 AM Wed Mar 19 2025 4F 1F / 83% NNW 17 G 24 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 15 09 AM Wed Mar 19 2025 5F 2F / 71% SSW 16 G 22 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 16 10 AM Wed Mar 19 2025 9F 4F / 70% NW 16 G 23 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 17 11 AM Wed Mar 19 2025 12F 6F / 67% NW 15 G 20 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.10" / 1.4" 18 12 PM Wed Mar 19 2025 15F 7F / 85% NW 13 G 17 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 19 01 PM Wed Mar 19 2025 17F 9F / 72% NW 10 G 14 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 20 02 PM Wed Mar 19 2025 19F 10F / 84% NW 9 G 13 MPH 4300 FT 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 21 03 PM Wed Mar 19 2025 20F 12F / 66% WNW 12 G 15 MPH 4400 FT 17:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 22 04 PM Wed Mar 19 2025 19F 12F / 80% WNW 9 G 13 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 23 05 PM Wed Mar 19 2025 20F 14F / 71% WNW 10 G 11 MPH 4500 FT 13:1 / 8% 0.00" / 0.0" 0.10" / 1.4" 24 06 PM Wed Mar 19 2025 20F 15F / 61% WNW 11 G 13 MPH 4300 FT 13:1 / 8% 0.00" / 0.0" 0.10" / 1.4" 25 07 PM Wed Mar 19 2025 19F 16F / 55% W 14 G 18 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.10" / 1.4" 26 08 PM Wed Mar 19 2025 15F 14F / 44% W 15 G 22 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.10" / 1.4" 27 09 PM Wed Mar 19 2025 15F 15F / 39% WSW 16 G 23 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.10" / 1.4" 28 10 PM Wed Mar 19 2025 16F 16F / 34% WSW 17 G 25 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.10" / 1.4" 29 11 PM Wed Mar 19 2025 18F 17F / 29% WSW 18 G 26 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.10" / 1.4" 30 12 AM Thu Mar 20 2025 18F 18F / 39% WSW 19 G 28 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.10" / 1.4" 31 01 AM Thu Mar 20 2025 18F 17F / 43% WSW 18 G 28 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.10" / 1.4" 32 02 AM Thu Mar 20 2025 18F 16F / 62% SW 16 G 28 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.10" / 1.4" 33 03 AM Thu Mar 20 2025 19F 17F / 68% SW 19 G 33 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.10" / 1.4" 34 04 AM Thu Mar 20 2025 19F 17F / 48% SSW 22 G 40 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.10" / 1.4" 35 05 AM Thu Mar 20 2025 20F 18F / 60% SSW 25 G 43 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.10" / 1.4" 36 06 AM Thu Mar 20 2025 19F 17F / 48% SSW 25 G 45 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.10" / 1.4" 37 07 AM Thu Mar 20 2025 20F 18F / 51% SW 27 G 41 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.10" / 1.4" 38 08 AM Thu Mar 20 2025 19F 16F / 51% WSW 23 G 42 MPH 4800 FT 12:1 / 8% 0.00" / 0.0" 0.10" / 1.4" 39 09 AM Thu Mar 20 2025 20F 16F / 58% WSW 22 G 33 MPH 4600 FT 14:1 / 7% 0.00" / 0.0" 0.10" / 1.4" 40 10 AM Thu Mar 20 2025 22F 17F / 59% WSW 19 G 31 MPH 5000 FT 16:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 41 11 AM Thu Mar 20 2025 20F 16F / 83% WSW 17 G 28 MPH 5200 FT 18:1 / 6% 0.00" / 0.0" 0.10" / 1.4" 42 12 PM Thu Mar 20 2025 22F 16F / 91% WSW 17 G 31 MPH 5200 FT 15:1 / 7% 0.00" / 0.0" 0.10" / 1.4" 43 01 PM Thu Mar 20 2025 23F 15F / 91% WSW 20 G 34 MPH 5200 FT 16:1 / 6% 0.01" / 0.2" 0.11" / 1.6" 44 02 PM Thu Mar 20 2025 24F 16F / 90% W 21 G 34 MPH 5400 FT 15:1 / 7% 0.04" / 0.6" 0.15" / 2.2" 45 03 PM Thu Mar 20 2025 22F 14F / 91% W 23 G 40 MPH 5500 FT 14:1 / 7% 0.04" / 0.6" 0.19" / 2.8" 46 04 PM Thu Mar 20 2025 24F 15F / 91% W 24 G 38 MPH 5700 FT 16:1 / 6% 0.00" / 0.0" 0.19" / 2.8" 47 05 PM Thu Mar 20 2025 22F 14F / 89% W 22 G 39 MPH 5400 FT 18:1 / 6% 0.00" / 0.0" 0.19" / 2.8" 48 06 PM Thu Mar 20 2025 20F 13F / 86% W 25 G 39 MPH 5100 FT 15:1 / 7% 0.00" / 0.0" 0.19" / 2.8"