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 10-Aug-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 Sat Aug 09 2025 52F 46F / 21% W 15 G 21 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Sat Aug 09 2025 49F 45F / 16% W 17 G 24 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Sat Aug 09 2025 45F 42F / 12% WNW 21 G 29 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Sat Aug 09 2025 43F 42F / 10% WNW 23 G 32 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Sat Aug 09 2025 42F 42F / 11% WNW 23 G 31 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Sat Aug 09 2025 42F 41F / 20% ESE 24 G 32 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Sun Aug 10 2025 41F 41F / 27% ESE 23 G 32 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Sun Aug 10 2025 40F 40F / 36% E 24 G 32 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Sun Aug 10 2025 40F 40F / 44% E 21 G 29 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Sun Aug 10 2025 40F 39F / 40% ESE 18 G 26 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Sun Aug 10 2025 39F 39F / 40% NW 19 G 26 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Sun Aug 10 2025 39F 39F / 42% NW 19 G 27 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Sun Aug 10 2025 39F 38F / 45% NW 19 G 26 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Sun Aug 10 2025 39F 38F / 49% ENE 18 G 26 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Sun Aug 10 2025 40F 38F / 46% NE 19 G 26 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Sun Aug 10 2025 42F 40F / 39% NW 19 G 26 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Sun Aug 10 2025 46F 41F / 35% NW 15 G 22 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Sun Aug 10 2025 50F 43F / 31% NW 14 G 23 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Sun Aug 10 2025 53F 45F / 27% NW 11 G 21 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Sun Aug 10 2025 56F 47F / 31% NW 12 G 20 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Sun Aug 10 2025 58F 48F / 30% NW 13 G 21 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Sun Aug 10 2025 60F 49F / 33% WNW 14 G 25 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Sun Aug 10 2025 59F 49F / 33% WNW 13 G 20 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 PM Sun Aug 10 2025 59F 50F / 36% WNW 17 G 25 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 PM Sun Aug 10 2025 55F 49F / 37% WNW 17 G 27 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 PM Sun Aug 10 2025 53F 48F / 45% WNW 17 G 26 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 PM Sun Aug 10 2025 49F 46F / 47% WNW 16 G 24 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 PM Sun Aug 10 2025 46F 45F / 47% WNW 15 G 24 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 PM Sun Aug 10 2025 46F 45F / 41% NW 16 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 PM Sun Aug 10 2025 46F 44F / 44% NW 17 G 25 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 AM Mon Aug 11 2025 45F 44F / 51% NW 18 G 26 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 AM Mon Aug 11 2025 44F 43F / 52% NW 17 G 26 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 AM Mon Aug 11 2025 44F 43F / 50% NNW 16 G 25 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 AM Mon Aug 11 2025 43F 42F / 46% NNW 17 G 22 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 AM Mon Aug 11 2025 43F 43F / 45% NNW 15 G 22 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 AM Mon Aug 11 2025 44F 42F / 46% N 15 G 22 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 AM Mon Aug 11 2025 44F 42F / 45% N 15 G 21 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 AM Mon Aug 11 2025 43F 43F / 44% NNE 15 G 21 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 AM Mon Aug 11 2025 44F 45F / 40% NNE 16 G 22 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 AM Mon Aug 11 2025 48F 47F / 34% ENE 14 G 22 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 AM Mon Aug 11 2025 52F 48F / 35% NE 13 G 21 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 AM Mon Aug 11 2025 57F 50F / 26% NE 9 G 17 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 PM Mon Aug 11 2025 60F 53F / 21% N 7 G 14 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 PM Mon Aug 11 2025 62F 55F / 18% NW 6 G 16 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 PM Mon Aug 11 2025 65F 55F / 29% WNW 9 G 16 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 PM Mon Aug 11 2025 66F 57F / 34% NW 11 G 20 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 PM Mon Aug 11 2025 65F 56F / 33% WNW 11 G 21 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 PM Mon Aug 11 2025 65F 56F / 37% WNW 11 G 18 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 PM Mon Aug 11 2025 61F 55F / 38% NW 10 G 18 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"