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 21-Jul-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 Jul 20 2025 64F 57F / 29% SW 10 G 18 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Sun Jul 20 2025 61F 57F / 26% SW 12 G 20 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Sun Jul 20 2025 58F 54F / 30% SW 11 G 17 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Sun Jul 20 2025 55F 53F / 29% SW 15 G 25 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Sun Jul 20 2025 55F 53F / 28% SW 15 G 26 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Sun Jul 20 2025 54F 53F / 29% SW 16 G 29 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Mon Jul 21 2025 54F 53F / 28% SW 17 G 30 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Mon Jul 21 2025 53F 51F / 27% SSW 20 G 37 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Mon Jul 21 2025 52F 50F / 21% SSW 23 G 40 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Mon Jul 21 2025 51F 50F / 28% SW 25 G 41 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Mon Jul 21 2025 50F 50F / 24% SW 25 G 43 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Mon Jul 21 2025 50F 50F / 28% SW 24 G 39 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Mon Jul 21 2025 49F 49F / 26% SW 22 G 36 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Mon Jul 21 2025 49F 49F / 27% SW 21 G 36 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Mon Jul 21 2025 51F 49F / 22% SW 20 G 33 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Mon Jul 21 2025 51F 48F / 35% SSW 17 G 31 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Mon Jul 21 2025 53F 48F / 37% SSW 15 G 30 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Mon Jul 21 2025 55F 48F / 36% S 14 G 30 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Mon Jul 21 2025 58F 50F / 47% S 14 G 30 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Mon Jul 21 2025 60F 51F / 45% S 14 G 33 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Mon Jul 21 2025 60F 51F / 52% S 14 G 30 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Mon Jul 21 2025 60F 51F / 51% S 12 G 30 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Mon Jul 21 2025 57F 49F / 54% S 12 G 26 MPH 14100 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 23 05 PM Mon Jul 21 2025 59F 51F / 69% S 12 G 28 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 24 06 PM Mon Jul 21 2025 57F 50F / 62% S 13 G 27 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 25 07 PM Mon Jul 21 2025 52F 47F / 70% SSW 15 G 29 MPH 13900 FT 0:1 / -% 0.10" / 0.0" 0.11" / 0.0" 26 08 PM Mon Jul 21 2025 51F 47F / 76% SSW 19 G 33 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 27 09 PM Mon Jul 21 2025 50F 47F / 79% SSW 21 G 34 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 28 10 PM Mon Jul 21 2025 50F 47F / 67% SSW 21 G 36 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 29 11 PM Mon Jul 21 2025 50F 47F / 69% S 20 G 35 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 30 12 AM Tue Jul 22 2025 49F 46F / 63% SSW 20 G 36 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 31 01 AM Tue Jul 22 2025 48F 46F / 62% SSW 21 G 39 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 32 02 AM Tue Jul 22 2025 48F 46F / 62% SSW 21 G 37 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 33 03 AM Tue Jul 22 2025 47F 45F / 61% SSW 22 G 37 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 34 04 AM Tue Jul 22 2025 46F 45F / 59% SW 22 G 37 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 35 05 AM Tue Jul 22 2025 46F 44F / 56% SW 22 G 41 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 36 06 AM Tue Jul 22 2025 45F 44F / 48% SW 20 G 36 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 37 07 AM Tue Jul 22 2025 46F 45F / 49% SW 18 G 29 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 38 08 AM Tue Jul 22 2025 48F 47F / 45% SW 16 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 39 09 AM Tue Jul 22 2025 49F 48F / 51% SW 16 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 40 10 AM Tue Jul 22 2025 52F 48F / 48% SW 14 G 26 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 41 11 AM Tue Jul 22 2025 56F 49F / 52% SSW 12 G 25 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 42 12 PM Tue Jul 22 2025 59F 51F / 43% SSW 12 G 25 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 43 01 PM Tue Jul 22 2025 60F 53F / 38% SSW 12 G 28 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 44 02 PM Tue Jul 22 2025 61F 53F / 36% SW 13 G 27 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 45 03 PM Tue Jul 22 2025 60F 54F / 40% SSW 12 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 46 04 PM Tue Jul 22 2025 61F 53F / 41% SW 12 G 26 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 47 05 PM Tue Jul 22 2025 62F 53F / 43% SW 12 G 25 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0" 48 06 PM Tue Jul 22 2025 60F 54F / 42% SW 13 G 24 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.11" / 0.0"