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-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 12 PM Sat Aug 09 2025 55F 47F / 15% W 13 G 21 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Sat Aug 09 2025 57F 47F / 11% WSW 12 G 20 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Sat Aug 09 2025 59F 48F / 18% W 13 G 21 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Sat Aug 09 2025 58F 48F / 23% W 14 G 22 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Sat Aug 09 2025 56F 47F / 29% W 16 G 24 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Sat Aug 09 2025 55F 47F / 21% W 15 G 23 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Sat Aug 09 2025 52F 46F / 21% W 16 G 24 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Sat Aug 09 2025 49F 45F / 16% W 18 G 26 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Sat Aug 09 2025 46F 44F / 11% WNW 20 G 28 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Sat Aug 09 2025 44F 43F / 8% ESE 20 G 29 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Sat Aug 09 2025 43F 42F / 9% NW 23 G 32 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Sat Aug 09 2025 43F 42F / 21% NW 24 G 32 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sun Aug 10 2025 42F 42F / 29% E 24 G 32 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sun Aug 10 2025 42F 41F / 35% NW 25 G 33 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sun Aug 10 2025 41F 40F / 44% ESE 23 G 31 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Sun Aug 10 2025 40F 39F / 44% ESE 23 G 30 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Sun Aug 10 2025 39F 38F / 48% E 22 G 30 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Sun Aug 10 2025 40F 39F / 44% E 22 G 31 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Sun Aug 10 2025 39F 38F / 43% E 21 G 30 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Sun Aug 10 2025 38F 38F / 40% NW 17 G 30 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Sun Aug 10 2025 39F 38F / 42% E 20 G 27 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Sun Aug 10 2025 42F 40F / 32% NW 21 G 30 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Sun Aug 10 2025 46F 41F / 25% NW 18 G 28 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Sun Aug 10 2025 51F 42F / 23% NW 16 G 26 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Sun Aug 10 2025 53F 44F / 25% NW 15 G 25 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Sun Aug 10 2025 56F 46F / 27% NW 14 G 23 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Sun Aug 10 2025 59F 47F / 28% NW 14 G 25 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Sun Aug 10 2025 59F 49F / 30% NW 14 G 25 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Sun Aug 10 2025 59F 48F / 37% WNW 14 G 24 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Sun Aug 10 2025 58F 49F / 36% WNW 15 G 25 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Sun Aug 10 2025 55F 49F / 41% NW 17 G 26 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Sun Aug 10 2025 52F 47F / 42% NW 18 G 28 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Sun Aug 10 2025 49F 45F / 43% WNW 16 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Sun Aug 10 2025 46F 44F / 42% WNW 17 G 26 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Sun Aug 10 2025 46F 45F / 41% NW 16 G 29 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Sun Aug 10 2025 46F 44F / 42% NW 17 G 26 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Mon Aug 11 2025 45F 43F / 43% NW 17 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Mon Aug 11 2025 45F 45F / 47% NNW 17 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Mon Aug 11 2025 45F 45F / 48% NNW 17 G 23 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Mon Aug 11 2025 44F 44F / 47% NNW 17 G 24 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Mon Aug 11 2025 44F 44F / 49% NNW 17 G 23 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Mon Aug 11 2025 43F 44F / 49% N 14 G 24 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Mon Aug 11 2025 43F 44F / 51% N 17 G 24 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Mon Aug 11 2025 43F 43F / 57% N 16 G 24 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Mon Aug 11 2025 44F 45F / 47% NNE 17 G 26 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Mon Aug 11 2025 48F 47F / 57% N 14 G 22 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Mon Aug 11 2025 51F 48F / 47% NNE 12 G 22 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Mon Aug 11 2025 57F 49F / 30% NNE 10 G 16 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Mon Aug 11 2025 61F 52F / 28% NW 5 G 13 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"