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 12Z 16-May-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 AM Fri May 16 2025 29F 25F / 70% W 18 G 26 MPH 8200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Fri May 16 2025 30F 25F / 67% W 17 G 24 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Fri May 16 2025 31F 25F / 69% WSW 16 G 23 MPH 7500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Fri May 16 2025 31F 26F / 67% WSW 15 G 23 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Fri May 16 2025 33F 26F / 68% WSW 12 G 19 MPH 8000 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Fri May 16 2025 35F 27F / 68% WSW 15 G 23 MPH 8100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Fri May 16 2025 37F 28F / 72% W 13 G 22 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Fri May 16 2025 38F 30F / 74% W 12 G 21 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Fri May 16 2025 40F 30F / 72% W 11 G 21 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Fri May 16 2025 40F 30F / 69% W 11 G 20 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Fri May 16 2025 39F 31F / 69% W 12 G 20 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Fri May 16 2025 39F 31F / 70% W 12 G 19 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Fri May 16 2025 38F 31F / 74% W 13 G 19 MPH 9200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Fri May 16 2025 37F 30F / 76% W 13 G 19 MPH 9200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Fri May 16 2025 35F 29F / 72% W 15 G 20 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Fri May 16 2025 33F 29F / 71% W 16 G 23 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Fri May 16 2025 33F 29F / 64% WSW 16 G 23 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Fri May 16 2025 33F 30F / 67% WSW 15 G 21 MPH 9400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Sat May 17 2025 33F 30F / 65% WSW 15 G 22 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Sat May 17 2025 33F 30F / 63% SW 15 G 24 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Sat May 17 2025 34F 30F / 67% SW 16 G 25 MPH 9400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Sat May 17 2025 34F 30F / 68% SW 16 G 25 MPH 9400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Sat May 17 2025 34F 31F / 67% SW 16 G 26 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Sat May 17 2025 34F 31F / 66% SW 16 G 27 MPH 9500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Sat May 17 2025 33F 28F / 82% W 14 G 23 MPH 9900 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Sat May 17 2025 34F 30F / 75% SSW 21 G 34 MPH 10000 FT 4:1 / 25% 0.06" / 0.2" 0.06" / 0.2" 26 08 AM Sat May 17 2025 34F 31F / 72% SSW 21 G 35 MPH 9800 FT 6:1 / 17% 0.00" / 0.0" 0.06" / 0.2" 27 09 AM Sat May 17 2025 36F 31F / 72% SSW 21 G 37 MPH 9600 FT 7:1 / 14% 0.00" / 0.0" 0.06" / 0.2" 28 10 AM Sat May 17 2025 38F 31F / 67% SSW 17 G 34 MPH 9500 FT 7:1 / 14% 0.00" / 0.0" 0.06" / 0.2" 29 11 AM Sat May 17 2025 40F 31F / 61% S 15 G 30 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.06" / 0.2" 30 12 PM Sat May 17 2025 42F 33F / 59% S 13 G 31 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.06" / 0.2" 31 01 PM Sat May 17 2025 45F 35F / 55% S 16 G 36 MPH 9600 FT 7:1 / 14% 0.00" / 0.0" 0.06" / 0.2" 32 02 PM Sat May 17 2025 47F 36F / 51% SSW 16 G 34 MPH 9800 FT 6:1 / 17% 0.00" / 0.0" 0.06" / 0.2" 33 03 PM Sat May 17 2025 46F 36F / 50% S 15 G 32 MPH 9900 FT 5:1 / 20% 0.00" / 0.0" 0.06" / 0.2" 34 04 PM Sat May 17 2025 46F 36F / 53% SSW 17 G 38 MPH 10200 FT 3:1 / 33% 0.00" / 0.0" 0.06" / 0.2" 35 05 PM Sat May 17 2025 46F 37F / 48% S 19 G 40 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.06" / 0.2" 36 06 PM Sat May 17 2025 38F 31F / 93% WSW 14 G 28 MPH 10400 FT 0:1 / -% 0.01" / 0.0" 0.07" / 0.2" 37 07 PM Sat May 17 2025 36F 30F / 100% SW 11 G 24 MPH 10200 FT 5:1 / 20% 0.14" / 0.7" 0.21" / 0.9" 38 08 PM Sat May 17 2025 36F 32F / 90% SSW 16 G 34 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.21" / 0.9" 39 09 PM Sat May 17 2025 36F 31F / 95% S 18 G 39 MPH 9300 FT 7:1 / 14% 0.00" / 0.0" 0.21" / 0.9" 40 10 PM Sat May 17 2025 33F 29F / 100% S 12 G 26 MPH 9600 FT 11:1 / 9% 0.11" / 1.2" 0.32" / 2.1" 41 11 PM Sat May 17 2025 33F 28F / 100% S 16 G 35 MPH 9100 FT 7:1 / 14% 0.13" / 0.9" 0.45" / 3.0" 42 12 AM Sun May 18 2025 33F 28F / 100% SSW 16 G 30 MPH 9100 FT 9:1 / 11% 0.04" / 0.4" 0.49" / 3.4" 43 01 AM Sun May 18 2025 30F 26F / 100% WSW 13 G 24 MPH 8600 FT 11:1 / 9% 0.09" / 1.0" 0.58" / 4.4" 44 02 AM Sun May 18 2025 30F 25F / 100% W 14 G 27 MPH 9300 FT 8:1 / 12% 0.07" / 0.6" 0.65" / 5.0" 45 03 AM Sun May 18 2025 29F 24F / 94% W 17 G 26 MPH 8600 FT 9:1 / 11% 0.01" / 0.1" 0.66" / 5.1" 46 04 AM Sun May 18 2025 27F 23F / 89% W 16 G 25 MPH 8700 FT 8:1 / 12% 0.01" / 0.1" 0.67" / 5.2" 47 05 AM Sun May 18 2025 29F 22F / 100% W 17 G 27 MPH 7700 FT 9:1 / 11% 0.01" / 0.1" 0.68" / 5.3" 48 06 AM Sun May 18 2025 26F 20F / 98% WNW 21 G 34 MPH 8000 FT 8:1 / 12% 0.15" / 1.2" 0.83" / 6.5"