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 14-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 12 PM Fri Mar 14 2025 15F 6F / 92% WNW 16 G 25 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Fri Mar 14 2025 16F 6F / 86% W 12 G 20 MPH ≤ KSLC 25:1 / 4% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Fri Mar 14 2025 18F 8F / 94% W 10 G 18 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Fri Mar 14 2025 19F 10F / 90% W 11 G 19 MPH ≤ KSLC 20:1 / 5% 0.01" / 0.2" 0.01" / 0.2" 4 04 PM Fri Mar 14 2025 18F 9F / 92% W 13 G 23 MPH ≤ KSLC 21:1 / 5% 0.01" / 0.2" 0.02" / 0.4" 5 05 PM Fri Mar 14 2025 18F 8F / 91% WSW 11 G 19 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.02" / 0.4" 6 06 PM Fri Mar 14 2025 17F 8F / 91% WSW 9 G 17 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.02" / 0.4" 7 07 PM Fri Mar 14 2025 16F 8F / 90% WSW 11 G 19 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 8 08 PM Fri Mar 14 2025 14F 7F / 94% WSW 14 G 23 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 9 09 PM Fri Mar 14 2025 12F 6F / 93% SW 16 G 25 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 10 10 PM Fri Mar 14 2025 12F 6F / 96% WSW 14 G 25 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 11 11 PM Fri Mar 14 2025 12F 7F / 91% SW 15 G 23 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 12 12 AM Sat Mar 15 2025 12F 8F / 90% SW 16 G 24 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 13 01 AM Sat Mar 15 2025 12F 7F / 94% SW 15 G 22 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 14 02 AM Sat Mar 15 2025 14F 7F / 92% WSW 14 G 22 MPH 4800 FT 20:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 15 03 AM Sat Mar 15 2025 14F 8F / 93% W 13 G 20 MPH 4600 FT 20:1 / 5% 0.00" / 0.0" 0.02" / 0.4" 16 04 AM Sat Mar 15 2025 14F 8F / 98% W 13 G 20 MPH 4500 FT 21:1 / 5% 0.02" / 0.4" 0.04" / 0.8" 17 05 AM Sat Mar 15 2025 14F 7F / 100% W 13 G 17 MPH 4700 FT 21:1 / 5% 0.00" / 0.0" 0.04" / 0.8" 18 06 AM Sat Mar 15 2025 14F 8F / 99% WNW 13 G 17 MPH 4700 FT 22:1 / 5% 0.00" / 0.0" 0.04" / 0.8" 19 07 AM Sat Mar 15 2025 14F 8F / 99% WNW 12 G 18 MPH 4800 FT 20:1 / 5% 0.03" / 0.6" 0.07" / 1.4" 20 08 AM Sat Mar 15 2025 14F 8F / 96% WNW 12 G 20 MPH 4800 FT 21:1 / 5% 0.12" / 2.5" 0.19" / 3.9" 21 09 AM Sat Mar 15 2025 14F 7F / 97% WNW 14 G 22 MPH 4700 FT 23:1 / 4% 0.04" / 0.9" 0.23" / 4.8" 22 10 AM Sat Mar 15 2025 15F 7F / 96% WNW 13 G 20 MPH 4500 FT 22:1 / 5% 0.01" / 0.2" 0.24" / 5.0" 23 11 AM Sat Mar 15 2025 16F 9F / 98% WNW 16 G 27 MPH 4500 FT 23:1 / 4% 0.02" / 0.5" 0.26" / 5.5" 24 12 PM Sat Mar 15 2025 18F 10F / 89% WNW 17 G 27 MPH 4400 FT 22:1 / 5% 0.03" / 0.7" 0.29" / 6.2" 25 01 PM Sat Mar 15 2025 19F 11F / 92% WNW 17 G 29 MPH 4400 FT 18:1 / 6% 0.03" / 0.5" 0.32" / 6.7" 26 02 PM Sat Mar 15 2025 19F 10F / 91% WNW 20 G 31 MPH 4500 FT 18:1 / 6% 0.06" / 1.1" 0.38" / 7.8" 27 03 PM Sat Mar 15 2025 19F 10F / 93% WNW 20 G 31 MPH 4400 FT 18:1 / 6% 0.03" / 0.5" 0.41" / 8.3" 28 04 PM Sat Mar 15 2025 19F 9F / 96% W 20 G 32 MPH 4500 FT 16:1 / 6% 0.03" / 0.5" 0.44" / 8.8" 29 05 PM Sat Mar 15 2025 18F 7F / 97% WNW 23 G 35 MPH 4500 FT 18:1 / 6% 0.05" / 0.9" 0.49" / 9.7" 30 06 PM Sat Mar 15 2025 17F 7F / 98% WNW 22 G 35 MPH 4500 FT 18:1 / 6% 0.01" / 0.2" 0.50" / 9.9" 31 07 PM Sat Mar 15 2025 14F 5F / 100% W 26 G 43 MPH 4600 FT 18:1 / 6% 0.01" / 0.2" 0.51" / 10.1" 32 08 PM Sat Mar 15 2025 14F 6F / 96% W 29 G 46 MPH 4800 FT 15:1 / 7% 0.01" / 0.2" 0.52" / 10.3" 33 09 PM Sat Mar 15 2025 14F 7F / 98% WNW 30 G 46 MPH 4700 FT 15:1 / 7% 0.00" / 0.0" 0.52" / 10.3" 34 10 PM Sat Mar 15 2025 12F 6F / 90% W 29 G 44 MPH 4600 FT 19:1 / 5% 0.00" / 0.0" 0.52" / 10.3" 35 11 PM Sat Mar 15 2025 11F 7F / 88% W 28 G 42 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.52" / 10.3" 36 12 AM Sun Mar 16 2025 12F 8F / 83% W 30 G 44 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.52" / 10.3" 37 01 AM Sun Mar 16 2025 13F 10F / 75% W 29 G 48 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.52" / 10.3" 38 02 AM Sun Mar 16 2025 13F 10F / 81% W 31 G 48 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.52" / 10.3" 39 03 AM Sun Mar 16 2025 16F 11F / 90% W 29 G 47 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.52" / 10.3" 40 04 AM Sun Mar 16 2025 18F 13F / 90% W 28 G 43 MPH ≤ KSLC 9:1 / 11% 0.01" / 0.1" 0.53" / 10.4" 41 05 AM Sun Mar 16 2025 18F 14F / 88% W 25 G 39 MPH ≤ KSLC 10:1 / 10% 0.01" / 0.1" 0.54" / 10.5" 42 06 AM Sun Mar 16 2025 19F 15F / 82% WSW 25 G 40 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.54" / 10.5" 43 07 AM Sun Mar 16 2025 18F 15F / 78% WSW 24 G 41 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.54" / 10.5" 44 08 AM Sun Mar 16 2025 19F 15F / 73% WSW 26 G 43 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.54" / 10.5" 45 09 AM Sun Mar 16 2025 21F 17F / 68% WSW 25 G 41 MPH 4600 FT 11:1 / 9% 0.00" / 0.0" 0.54" / 10.5" 46 10 AM Sun Mar 16 2025 23F 17F / 70% WSW 25 G 40 MPH 5000 FT 11:1 / 9% 0.00" / 0.0" 0.54" / 10.5" 47 11 AM Sun Mar 16 2025 24F 18F / 68% WSW 23 G 39 MPH 5400 FT 11:1 / 9% 0.00" / 0.0" 0.54" / 10.5" 48 12 PM Sun Mar 16 2025 27F 20F / 61% SW 23 G 40 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.54" / 10.5"