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 12Z 08-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 AM Fri Aug 08 2025 44F 42F / 63% W 20 G 29 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Fri Aug 08 2025 44F 42F / 56% W 22 G 33 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Fri Aug 08 2025 46F 42F / 55% W 24 G 34 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Fri Aug 08 2025 47F 43F / 44% W 24 G 35 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Fri Aug 08 2025 49F 43F / 49% W 22 G 32 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Fri Aug 08 2025 53F 44F / 50% W 19 G 30 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Fri Aug 08 2025 55F 45F / 47% W 17 G 29 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Fri Aug 08 2025 55F 46F / 43% W 17 G 29 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Fri Aug 08 2025 57F 46F / 41% W 17 G 29 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Fri Aug 08 2025 58F 46F / 41% W 19 G 31 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Fri Aug 08 2025 56F 46F / 39% W 19 G 31 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Fri Aug 08 2025 56F 47F / 38% W 20 G 30 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Fri Aug 08 2025 54F 47F / 37% W 21 G 33 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Fri Aug 08 2025 51F 46F / 26% W 22 G 32 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Fri Aug 08 2025 48F 45F / 13% W 23 G 34 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Fri Aug 08 2025 46F 44F / 15% W 25 G 36 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Fri Aug 08 2025 46F 45F / 9% W 26 G 37 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Fri Aug 08 2025 46F 44F / 12% W 26 G 35 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Sat Aug 09 2025 46F 45F / 12% WNW 27 G 39 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Sat Aug 09 2025 45F 44F / 8% WNW 27 G 39 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Sat Aug 09 2025 45F 43F / 18% W 26 G 37 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Sat Aug 09 2025 44F 42F / 23% W 24 G 34 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Sat Aug 09 2025 43F 41F / 25% W 23 G 33 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Sat Aug 09 2025 42F 40F / 27% W 22 G 30 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Sat Aug 09 2025 42F 40F / 25% W 22 G 31 MPH 10200 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Sat Aug 09 2025 41F 40F / 23% W 23 G 33 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Sat Aug 09 2025 42F 40F / 26% W 24 G 35 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Sat Aug 09 2025 45F 42F / 22% W 24 G 35 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 28 10 AM Sat Aug 09 2025 48F 42F / 21% W 21 G 33 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 29 11 AM Sat Aug 09 2025 51F 43F / 16% W 19 G 32 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 30 12 PM Sat Aug 09 2025 54F 44F / 18% W 18 G 33 MPH 10100 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 31 01 PM Sat Aug 09 2025 54F 45F / 24% W 19 G 31 MPH 9900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 32 02 PM Sat Aug 09 2025 56F 44F / 22% W 20 G 31 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 33 03 PM Sat Aug 09 2025 55F 44F / 19% W 16 G 28 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 34 04 PM Sat Aug 09 2025 55F 44F / 20% W 17 G 27 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 35 05 PM Sat Aug 09 2025 54F 45F / 22% W 16 G 25 MPH 9900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 36 06 PM Sat Aug 09 2025 51F 44F / 22% W 18 G 27 MPH 9900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 37 07 PM Sat Aug 09 2025 51F 47F / 7% W 21 G 31 MPH 10100 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 38 08 PM Sat Aug 09 2025 48F 47F / 10% WNW 23 G 33 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 39 09 PM Sat Aug 09 2025 44F 43F / 24% WNW 21 G 30 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 PM Sat Aug 09 2025 44F 44F / 29% NW 24 G 37 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 PM Sat Aug 09 2025 44F 43F / 33% NW 22 G 34 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 AM Sun Aug 10 2025 43F 42F / 39% NW 24 G 35 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 AM Sun Aug 10 2025 41F 41F / 44% NW 21 G 34 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 AM Sun Aug 10 2025 41F 40F / 42% NW 22 G 31 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 AM Sun Aug 10 2025 40F 40F / 39% NW 21 G 30 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 AM Sun Aug 10 2025 39F 39F / 45% N 18 G 31 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 AM Sun Aug 10 2025 39F 39F / 48% NNW 21 G 31 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 AM Sun Aug 10 2025 38F 38F / 42% NW 21 G 27 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"