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 31-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 Sun Mar 30 2025 30F 21F / 82% SW 17 G 30 MPH 7200 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Sun Mar 30 2025 27F 20F / 70% SW 19 G 32 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Sun Mar 30 2025 25F 19F / 71% SW 19 G 31 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Sun Mar 30 2025 24F 20F / 68% SW 21 G 35 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Sun Mar 30 2025 24F 21F / 65% WSW 22 G 38 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Sun Mar 30 2025 24F 21F / 64% WSW 22 G 36 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Mon Mar 31 2025 24F 22F / 64% SW 22 G 35 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Mon Mar 31 2025 26F 22F / 67% SW 22 G 38 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Mon Mar 31 2025 26F 22F / 77% SW 24 G 40 MPH 7600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Mon Mar 31 2025 26F 22F / 66% SSW 21 G 38 MPH 7300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Mon Mar 31 2025 24F 21F / 71% SSW 23 G 44 MPH 7000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Mon Mar 31 2025 24F 21F / 73% SSW 24 G 43 MPH 6900 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Mon Mar 31 2025 24F 21F / 69% SW 23 G 40 MPH 6800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Mon Mar 31 2025 25F 21F / 73% SW 24 G 39 MPH 6900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Mon Mar 31 2025 26F 21F / 80% SW 25 G 42 MPH 7000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Mon Mar 31 2025 27F 21F / 93% SSW 22 G 42 MPH 7000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Mon Mar 31 2025 27F 20F / 93% SSW 21 G 42 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Mon Mar 31 2025 28F 20F / 93% SSW 20 G 40 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Mon Mar 31 2025 31F 21F / 90% SW 20 G 39 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Mon Mar 31 2025 33F 22F / 71% SW 21 G 39 MPH 7300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Mon Mar 31 2025 34F 23F / 64% SW 21 G 40 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Mon Mar 31 2025 33F 24F / 67% SW 21 G 42 MPH 7400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Mon Mar 31 2025 33F 23F / 79% SW 24 G 47 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Mon Mar 31 2025 32F 22F / 81% SSW 22 G 45 MPH 7700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Mon Mar 31 2025 32F 23F / 71% SW 30 G 56 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Mon Mar 31 2025 27F 19F / 99% W 20 G 36 MPH 6700 FT 9:1 / 11% 0.16" / 1.4" 0.16" / 1.4" 26 08 PM Mon Mar 31 2025 26F 18F / 97% W 18 G 30 MPH 6100 FT 11:1 / 9% 0.16" / 1.8" 0.32" / 3.2" 27 09 PM Mon Mar 31 2025 22F 15F / 98% WNW 22 G 38 MPH 6200 FT 11:1 / 9% 0.21" / 2.3" 0.53" / 5.5" 28 10 PM Mon Mar 31 2025 21F 14F / 95% WNW 29 G 45 MPH 5300 FT 13:1 / 8% 0.11" / 1.4" 0.64" / 6.9" 29 11 PM Mon Mar 31 2025 18F 10F / 97% WNW 28 G 46 MPH 5400 FT 14:1 / 7% 0.10" / 1.4" 0.74" / 8.3" 30 12 AM Tue Apr 01 2025 17F 10F / 100% WNW 24 G 37 MPH 5500 FT 16:1 / 6% 0.03" / 0.5" 0.77" / 8.8" 31 01 AM Tue Apr 01 2025 17F 10F / 90% W 27 G 41 MPH 5500 FT 16:1 / 6% 0.01" / 0.2" 0.78" / 9.0" 32 02 AM Tue Apr 01 2025 16F 9F / 94% W 25 G 40 MPH 5300 FT 12:1 / 8% 0.06" / 0.7" 0.84" / 9.7" 33 03 AM Tue Apr 01 2025 15F 8F / 94% W 20 G 31 MPH 5100 FT 17:1 / 6% 0.01" / 0.2" 0.85" / 9.9" 34 04 AM Tue Apr 01 2025 14F 7F / 93% W 17 G 27 MPH 4900 FT 17:1 / 6% 0.00" / 0.0" 0.85" / 9.9" 35 05 AM Tue Apr 01 2025 13F 7F / 97% W 14 G 19 MPH 4300 FT 17:1 / 6% 0.02" / 0.3" 0.87" / 10.2" 36 06 AM Tue Apr 01 2025 13F 6F / 89% W 17 G 26 MPH 4300 FT 19:1 / 5% 0.11" / 2.1" 0.98" / 12.3" 37 07 AM Tue Apr 01 2025 13F 7F / 92% WNW 18 G 26 MPH ≤ KSLC 18:1 / 6% 0.06" / 1.1" 1.04" / 13.4" 38 08 AM Tue Apr 01 2025 13F 6F / 89% WNW 19 G 32 MPH 4300 FT 16:1 / 6% 0.07" / 1.1" 1.11" / 14.5" 39 09 AM Tue Apr 01 2025 14F 6F / 87% WNW 22 G 33 MPH 4300 FT 16:1 / 6% 0.04" / 0.6" 1.15" / 15.1" 40 10 AM Tue Apr 01 2025 13F 6F / 89% W 18 G 30 MPH ≤ KSLC 17:1 / 6% 0.03" / 0.5" 1.18" / 15.6" 41 11 AM Tue Apr 01 2025 15F 5F / 83% WNW 19 G 29 MPH ≤ KSLC 17:1 / 6% 0.01" / 0.2" 1.19" / 15.8" 42 12 PM Tue Apr 01 2025 16F 6F / 87% W 21 G 34 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 1.19" / 15.8" 43 01 PM Tue Apr 01 2025 17F 7F / 90% W 22 G 36 MPH 4300 FT 15:1 / 7% 0.00" / 0.0" 1.19" / 15.8" 44 02 PM Tue Apr 01 2025 19F 8F / 88% W 21 G 33 MPH 4300 FT 18:1 / 6% 0.00" / 0.0" 1.19" / 15.8" 45 03 PM Tue Apr 01 2025 19F 9F / 95% W 19 G 31 MPH 4300 FT 19:1 / 5% 0.01" / 0.2" 1.20" / 16.0" 46 04 PM Tue Apr 01 2025 20F 9F / 91% W 19 G 30 MPH 4300 FT 18:1 / 6% 0.00" / 0.0" 1.20" / 16.0" 47 05 PM Tue Apr 01 2025 19F 9F / 89% W 21 G 31 MPH 4500 FT 17:1 / 6% 0.02" / 0.3" 1.22" / 16.3" 48 06 PM Tue Apr 01 2025 17F 8F / 89% W 20 G 31 MPH 4600 FT 18:1 / 6% 0.01" / 0.2" 1.23" / 16.5"