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 29-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 Fri Aug 29 2025 44F 42F / 65% S 7 G 9 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Fri Aug 29 2025 43F 42F / 71% SW 8 G 11 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Fri Aug 29 2025 43F 41F / 77% NW 8 G 12 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Fri Aug 29 2025 42F 41F / 69% NW 8 G 13 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Fri Aug 29 2025 43F 41F / 60% ESE 9 G 13 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Fri Aug 29 2025 43F 40F / 65% NNW 9 G 14 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Fri Aug 29 2025 42F 40F / 63% NNW 10 G 13 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Fri Aug 29 2025 42F 40F / 71% NNE 9 G 13 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Fri Aug 29 2025 42F 40F / 63% WNW 9 G 13 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Fri Aug 29 2025 44F 42F / 61% E 8 G 11 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Fri Aug 29 2025 46F 41F / 52% WNW 8 G 13 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Fri Aug 29 2025 51F 44F / 47% W 8 G 13 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Fri Aug 29 2025 52F 44F / 58% NW 13 G 20 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Fri Aug 29 2025 52F 45F / 71% NW 12 G 20 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Fri Aug 29 2025 54F 44F / 65% NW 11 G 19 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Fri Aug 29 2025 53F 45F / 77% WNW 14 G 22 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Fri Aug 29 2025 53F 44F / 77% WNW 13 G 20 MPH 12600 FT 0:1 / -% 0.03" / 0.0" 0.03" / 0.0" 17 05 PM Fri Aug 29 2025 48F 43F / 93% W 8 G 20 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 18 06 PM Fri Aug 29 2025 47F 42F / 86% WNW 15 G 25 MPH 12500 FT 0:1 / -% 0.03" / 0.0" 0.06" / 0.0" 19 07 PM Fri Aug 29 2025 48F 42F / 83% WNW 18 G 25 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 20 08 PM Fri Aug 29 2025 44F 40F / 100% WNW 14 G 18 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 21 09 PM Fri Aug 29 2025 43F 40F / 88% WNW 15 G 21 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 22 10 PM Fri Aug 29 2025 43F 40F / 69% NW 17 G 25 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 23 11 PM Fri Aug 29 2025 43F 40F / 69% NW 18 G 27 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 24 12 AM Sat Aug 30 2025 43F 40F / 70% NW 20 G 29 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 25 01 AM Sat Aug 30 2025 41F 40F / 62% NW 21 G 30 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 26 02 AM Sat Aug 30 2025 42F 40F / 66% W 20 G 28 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 27 03 AM Sat Aug 30 2025 41F 39F / 59% W 19 G 27 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 28 04 AM Sat Aug 30 2025 41F 39F / 68% WNW 17 G 27 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 29 05 AM Sat Aug 30 2025 40F 39F / 68% NW 18 G 27 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 30 06 AM Sat Aug 30 2025 40F 39F / 67% NW 18 G 26 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 31 07 AM Sat Aug 30 2025 40F 38F / 69% NW 17 G 25 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 32 08 AM Sat Aug 30 2025 40F 39F / 62% NW 19 G 25 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 33 09 AM Sat Aug 30 2025 42F 40F / 70% NW 16 G 24 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 34 10 AM Sat Aug 30 2025 45F 41F / 67% NW 15 G 25 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 35 11 AM Sat Aug 30 2025 49F 42F / 65% NW 12 G 21 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 36 12 PM Sat Aug 30 2025 52F 43F / 63% NW 14 G 22 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 37 01 PM Sat Aug 30 2025 56F 48F / 51% WNW 13 G 20 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 38 02 PM Sat Aug 30 2025 57F 48F / 53% NW 11 G 19 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 39 03 PM Sat Aug 30 2025 58F 49F / 48% WNW 12 G 19 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 40 04 PM Sat Aug 30 2025 58F 50F / 60% WNW 12 G 19 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 41 05 PM Sat Aug 30 2025 58F 49F / 58% WNW 12 G 20 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 42 06 PM Sat Aug 30 2025 55F 50F / 58% WNW 13 G 20 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 43 07 PM Sat Aug 30 2025 52F 48F / 55% WNW 14 G 20 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 44 08 PM Sat Aug 30 2025 48F 45F / 56% WNW 15 G 19 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 45 09 PM Sat Aug 30 2025 45F 44F / 58% NW 14 G 22 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 46 10 PM Sat Aug 30 2025 44F 44F / 50% NW 13 G 22 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 47 11 PM Sat Aug 30 2025 43F 44F / 48% NNW 16 G 25 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 48 12 AM Sun Aug 31 2025 43F 43F / 40% NNW 15 G 22 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0"