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 09-Apr-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 Wed Apr 09 2025 36F 28F / 49% W 15 G 23 MPH 7700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Wed Apr 09 2025 38F 29F / 48% W 13 G 19 MPH 8200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Wed Apr 09 2025 40F 30F / 44% W 13 G 21 MPH 8300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Wed Apr 09 2025 41F 31F / 52% W 15 G 22 MPH 8500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Wed Apr 09 2025 41F 31F / 56% W 16 G 23 MPH 8300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Wed Apr 09 2025 39F 32F / 52% W 16 G 23 MPH 8300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Wed Apr 09 2025 36F 32F / 47% W 18 G 26 MPH 8400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Wed Apr 09 2025 34F 30F / 42% W 18 G 27 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Wed Apr 09 2025 32F 30F / 41% W 21 G 30 MPH 8500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Wed Apr 09 2025 31F 30F / 40% W 22 G 30 MPH 8500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Wed Apr 09 2025 31F 30F / 35% W 23 G 32 MPH 8600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Wed Apr 09 2025 32F 31F / 35% W 24 G 32 MPH 8600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Thu Apr 10 2025 32F 32F / 30% W 25 G 34 MPH 8600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Thu Apr 10 2025 32F 32F / 26% WNW 27 G 38 MPH 8600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Thu Apr 10 2025 31F 32F / 28% WNW 25 G 35 MPH 8600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Thu Apr 10 2025 31F 32F / 28% WNW 25 G 33 MPH 8700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Thu Apr 10 2025 31F 31F / 26% WNW 23 G 32 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Thu Apr 10 2025 31F 32F / 26% WNW 21 G 30 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Thu Apr 10 2025 31F 32F / 27% WNW 18 G 25 MPH 8700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Thu Apr 10 2025 31F 32F / 24% WNW 17 G 21 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Thu Apr 10 2025 31F 32F / 24% W 12 G 15 MPH 8600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Thu Apr 10 2025 33F 34F / 22% WSW 14 G 18 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Thu Apr 10 2025 36F 35F / 18% WSW 13 G 19 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Thu Apr 10 2025 39F 37F / 22% WSW 13 G 21 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Thu Apr 10 2025 42F 38F / 28% SW 13 G 22 MPH 8700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Thu Apr 10 2025 45F 39F / 28% SW 13 G 22 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Thu Apr 10 2025 48F 40F / 29% WSW 11 G 22 MPH 9600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Thu Apr 10 2025 49F 41F / 28% WSW 12 G 21 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Thu Apr 10 2025 49F 41F / 28% SW 11 G 21 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Thu Apr 10 2025 48F 41F / 30% SW 12 G 23 MPH 10300 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Thu Apr 10 2025 44F 40F / 30% SW 13 G 23 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Thu Apr 10 2025 42F 40F / 29% WSW 14 G 22 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Thu Apr 10 2025 41F 39F / 29% WSW 15 G 23 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Thu Apr 10 2025 40F 39F / 31% WSW 15 G 22 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Thu Apr 10 2025 39F 39F / 24% SW 16 G 24 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Thu Apr 10 2025 39F 39F / 19% WSW 15 G 22 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Fri Apr 11 2025 39F 39F / 19% WSW 16 G 23 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Fri Apr 11 2025 40F 40F / 23% SW 19 G 27 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Fri Apr 11 2025 40F 40F / 24% SW 19 G 28 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Fri Apr 11 2025 39F 40F / 22% SW 19 G 28 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Fri Apr 11 2025 39F 40F / 24% SSW 19 G 30 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Fri Apr 11 2025 39F 39F / 23% SW 20 G 31 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Fri Apr 11 2025 38F 39F / 22% SW 19 G 31 MPH 10200 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Fri Apr 11 2025 37F 38F / 27% SW 19 G 29 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Fri Apr 11 2025 38F 38F / 27% SW 20 G 31 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Fri Apr 11 2025 38F 39F / 33% SW 18 G 31 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Fri Apr 11 2025 40F 39F / 28% SSW 17 G 30 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Fri Apr 11 2025 42F 39F / 25% SSW 17 G 31 MPH 9900 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Fri Apr 11 2025 46F 39F / 25% S 16 G 33 MPH 9900 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0"