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 12-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 12 PM Mon May 12 2025 49F 39F / 42% S 27 G 59 MPH 9500 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Mon May 12 2025 50F 39F / 46% S 23 G 53 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Mon May 12 2025 52F 40F / 40% S 21 G 51 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Mon May 12 2025 53F 42F / 33% S 21 G 49 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Mon May 12 2025 52F 42F / 30% S 22 G 51 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Mon May 12 2025 52F 43F / 29% S 23 G 49 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Mon May 12 2025 49F 43F / 29% S 23 G 48 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Mon May 12 2025 46F 42F / 31% S 23 G 49 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Mon May 12 2025 43F 40F / 31% S 23 G 47 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Mon May 12 2025 42F 38F / 29% SSW 26 G 53 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Mon May 12 2025 40F 37F / 30% SSW 28 G 55 MPH 10000 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Mon May 12 2025 40F 36F / 41% SSW 30 G 57 MPH 9900 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Tue May 13 2025 38F 33F / 46% SSW 25 G 50 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Tue May 13 2025 38F 33F / 46% SSW 30 G 59 MPH 9100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Tue May 13 2025 38F 32F / 48% SSW 28 G 54 MPH 8500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Tue May 13 2025 37F 31F / 55% S 25 G 51 MPH 8000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Tue May 13 2025 36F 30F / 57% SSW 28 G 57 MPH 7800 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Tue May 13 2025 36F 30F / 63% S 27 G 51 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Tue May 13 2025 35F 29F / 70% S 25 G 53 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Tue May 13 2025 34F 27F / 71% S 23 G 48 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Tue May 13 2025 34F 27F / 76% S 19 G 40 MPH 7100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Tue May 13 2025 33F 25F / 87% SSW 15 G 32 MPH 7000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Tue May 13 2025 33F 25F / 91% S 12 G 29 MPH 6900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Tue May 13 2025 33F 25F / 88% S 14 G 31 MPH 6900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Tue May 13 2025 35F 25F / 84% S 11 G 26 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Tue May 13 2025 33F 25F / 92% SW 9 G 23 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Tue May 13 2025 30F 23F / 96% WSW 9 G 21 MPH 7400 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Tue May 13 2025 33F 24F / 98% SW 11 G 23 MPH 7600 FT 10:1 / 10% 0.02" / 0.2" 0.02" / 0.2" 28 04 PM Tue May 13 2025 30F 23F / 95% W 12 G 24 MPH 7300 FT 9:1 / 11% 0.01" / 0.1" 0.03" / 0.3" 29 05 PM Tue May 13 2025 29F 21F / 91% W 10 G 21 MPH 7100 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.3" 30 06 PM Tue May 13 2025 27F 21F / 99% WSW 10 G 19 MPH 7000 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.3" 31 07 PM Tue May 13 2025 28F 20F / 100% W 10 G 16 MPH 7000 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.3" 32 08 PM Tue May 13 2025 27F 21F / 83% W 14 G 24 MPH 7200 FT 12:1 / 8% 0.00" / 0.0" 0.03" / 0.3" 33 09 PM Tue May 13 2025 26F 20F / 85% W 13 G 21 MPH 7700 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.3" 34 10 PM Tue May 13 2025 25F 20F / 82% WSW 11 G 17 MPH 7500 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.3" 35 11 PM Tue May 13 2025 25F 20F / 95% WSW 10 G 15 MPH 7500 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.3" 36 12 AM Wed May 14 2025 24F 19F / 82% SW 11 G 16 MPH 7300 FT 14:1 / 7% 0.00" / 0.0" 0.03" / 0.3" 37 01 AM Wed May 14 2025 24F 20F / 90% WSW 12 G 18 MPH 7600 FT 12:1 / 8% 0.00" / 0.0" 0.03" / 0.3" 38 02 AM Wed May 14 2025 24F 19F / 96% WSW 11 G 18 MPH 7500 FT 12:1 / 8% 0.00" / 0.0" 0.03" / 0.3" 39 03 AM Wed May 14 2025 24F 19F / 96% W 11 G 17 MPH 7100 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.3" 40 04 AM Wed May 14 2025 24F 19F / 94% WNW 11 G 16 MPH 6800 FT 11:1 / 9% 0.01" / 0.1" 0.04" / 0.4" 41 05 AM Wed May 14 2025 23F 19F / 96% WNW 14 G 19 MPH 6700 FT 11:1 / 9% 0.05" / 0.6" 0.09" / 1.0" 42 06 AM Wed May 14 2025 22F 17F / 95% WNW 19 G 29 MPH 6900 FT 11:1 / 9% 0.18" / 2.0" 0.27" / 3.0" 43 07 AM Wed May 14 2025 23F 18F / 91% WNW 14 G 22 MPH 6900 FT 10:1 / 10% 0.06" / 0.6" 0.33" / 3.6" 44 08 AM Wed May 14 2025 23F 18F / 88% WNW 14 G 21 MPH 6900 FT 11:1 / 9% 0.00" / 0.0" 0.33" / 3.6" 45 09 AM Wed May 14 2025 23F 18F / 88% WNW 14 G 23 MPH 6900 FT 13:1 / 8% 0.00" / 0.0" 0.33" / 3.6" 46 10 AM Wed May 14 2025 24F 18F / 89% WNW 12 G 22 MPH 7000 FT 12:1 / 8% 0.00" / 0.0" 0.33" / 3.6" 47 11 AM Wed May 14 2025 25F 19F / 96% W 11 G 19 MPH 7000 FT 12:1 / 8% 0.01" / 0.1" 0.34" / 3.7" 48 12 PM Wed May 14 2025 29F 21F / 94% WNW 12 G 22 MPH 6900 FT 12:1 / 8% 0.00" / 0.0" 0.34" / 3.7"