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 06Z 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 AM Sat Aug 09 2025 45F 43F / 15% WNW 24 G 34 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Sat Aug 09 2025 44F 44F / 8% WNW 26 G 37 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Sat Aug 09 2025 44F 43F / 11% WNW 26 G 35 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Sat Aug 09 2025 44F 42F / 15% WNW 26 G 34 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Sat Aug 09 2025 43F 42F / 18% WNW 22 G 30 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Sat Aug 09 2025 43F 41F / 20% W 18 G 25 MPH 10200 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Sat Aug 09 2025 43F 41F / 21% W 20 G 27 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Sat Aug 09 2025 42F 41F / 19% W 21 G 29 MPH 10300 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Sat Aug 09 2025 43F 42F / 20% W 22 G 31 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Sat Aug 09 2025 46F 44F / 17% W 21 G 29 MPH 10400 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Sat Aug 09 2025 49F 44F / 16% W 19 G 31 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Sat Aug 09 2025 53F 45F / 19% W 16 G 27 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Sat Aug 09 2025 56F 46F / 19% W 15 G 24 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Sat Aug 09 2025 57F 47F / 18% W 15 G 25 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Sat Aug 09 2025 58F 47F / 21% W 17 G 26 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Sat Aug 09 2025 57F 46F / 17% W 17 G 27 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Sat Aug 09 2025 56F 46F / 16% W 16 G 27 MPH 10200 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Sat Aug 09 2025 55F 46F / 14% W 17 G 26 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Sat Aug 09 2025 52F 46F / 15% W 18 G 28 MPH 10000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Sat Aug 09 2025 50F 45F / 14% W 20 G 28 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Sat Aug 09 2025 47F 44F / 11% WNW 21 G 30 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Sat Aug 09 2025 44F 43F / 12% ESE 21 G 29 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Sat Aug 09 2025 44F 43F / 19% WNW 22 G 31 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 PM Sat Aug 09 2025 43F 42F / 28% NNW 23 G 31 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 AM Sun Aug 10 2025 43F 42F / 29% NW 24 G 33 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 AM Sun Aug 10 2025 42F 41F / 29% NW 24 G 34 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 AM Sun Aug 10 2025 41F 40F / 37% NNW 22 G 31 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 AM Sun Aug 10 2025 40F 40F / 37% NW 21 G 29 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 AM Sun Aug 10 2025 40F 39F / 37% NW 21 G 30 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 AM Sun Aug 10 2025 40F 39F / 40% NW 21 G 30 MPH 10700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 AM Sun Aug 10 2025 39F 39F / 38% NW 21 G 29 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 AM Sun Aug 10 2025 39F 38F / 39% NW 20 G 28 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 AM Sun Aug 10 2025 40F 39F / 34% NW 20 G 25 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 AM Sun Aug 10 2025 43F 41F / 36% NW 18 G 26 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 AM Sun Aug 10 2025 46F 42F / 30% NW 14 G 24 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 AM Sun Aug 10 2025 50F 43F / 27% NW 14 G 23 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 PM Sun Aug 10 2025 54F 45F / 27% NW 14 G 23 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 PM Sun Aug 10 2025 58F 50F / 20% NW 14 G 22 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 PM Sun Aug 10 2025 60F 52F / 22% NW 12 G 23 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 PM Sun Aug 10 2025 62F 52F / 30% WNW 16 G 25 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 PM Sun Aug 10 2025 61F 52F / 28% WNW 14 G 23 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 PM Sun Aug 10 2025 61F 52F / 31% WNW 15 G 25 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 PM Sun Aug 10 2025 57F 51F / 31% W 14 G 27 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 PM Sun Aug 10 2025 55F 51F / 30% WNW 19 G 28 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 PM Sun Aug 10 2025 52F 50F / 32% WNW 18 G 23 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 PM Sun Aug 10 2025 48F 48F / 39% NW 17 G 28 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 PM Sun Aug 10 2025 47F 47F / 40% NW 20 G 31 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 PM Sun Aug 10 2025 46F 46F / 47% NW 20 G 29 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 AM Mon Aug 11 2025 45F 45F / 45% NNW 19 G 28 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"