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 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 06 AM Fri Aug 29 2025 43F 41F / 86% N 10 G 15 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Fri Aug 29 2025 42F 41F / 74% NE 10 G 15 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Fri Aug 29 2025 43F 41F / 69% N 10 G 15 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Fri Aug 29 2025 44F 42F / 68% NNE 10 G 15 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Fri Aug 29 2025 47F 43F / 58% NNW 8 G 12 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Fri Aug 29 2025 51F 44F / 59% NW 7 G 12 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Fri Aug 29 2025 53F 46F / 66% NW 7 G 16 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Fri Aug 29 2025 54F 46F / 74% WNW 9 G 19 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Fri Aug 29 2025 56F 46F / 62% WNW 10 G 20 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Fri Aug 29 2025 58F 47F / 50% WNW 15 G 24 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Fri Aug 29 2025 56F 47F / 53% WNW 18 G 28 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Fri Aug 29 2025 54F 47F / 54% WNW 19 G 28 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Fri Aug 29 2025 52F 47F / 46% WNW 14 G 24 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Fri Aug 29 2025 50F 44F / 52% WNW 15 G 22 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Fri Aug 29 2025 46F 43F / 56% WNW 14 G 22 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Fri Aug 29 2025 44F 42F / 52% WNW 15 G 22 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Fri Aug 29 2025 44F 42F / 55% WNW 16 G 25 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Fri Aug 29 2025 44F 42F / 56% NW 18 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Sat Aug 30 2025 43F 41F / 54% NW 18 G 28 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Sat Aug 30 2025 43F 41F / 56% NW 17 G 27 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Sat Aug 30 2025 42F 40F / 59% NW 16 G 24 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Sat Aug 30 2025 42F 40F / 63% NNW 14 G 22 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Sat Aug 30 2025 42F 40F / 62% NW 16 G 22 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Sat Aug 30 2025 41F 40F / 57% NW 15 G 23 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Sat Aug 30 2025 41F 40F / 59% NW 17 G 23 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Sat Aug 30 2025 40F 39F / 58% NW 17 G 24 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Sat Aug 30 2025 40F 39F / 55% NW 17 G 24 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Sat Aug 30 2025 43F 40F / 57% NW 16 G 22 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 10 AM Sat Aug 30 2025 46F 41F / 52% NW 13 G 19 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 11 AM Sat Aug 30 2025 51F 43F / 59% NW 11 G 19 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 PM Sat Aug 30 2025 54F 45F / 48% NW 10 G 18 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 PM Sat Aug 30 2025 56F 47F / 44% NW 10 G 18 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 PM Sat Aug 30 2025 59F 48F / 42% NW 7 G 17 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 PM Sat Aug 30 2025 59F 49F / 48% NW 8 G 16 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 PM Sat Aug 30 2025 58F 50F / 48% WNW 9 G 17 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 PM Sat Aug 30 2025 59F 50F / 39% NW 9 G 18 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 PM Sat Aug 30 2025 54F 48F / 44% NW 11 G 19 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 PM Sat Aug 30 2025 54F 50F / 54% WNW 11 G 20 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 PM Sat Aug 30 2025 48F 47F / 50% NW 12 G 18 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 PM Sat Aug 30 2025 46F 45F / 43% NW 12 G 18 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 PM Sat Aug 30 2025 46F 46F / 34% NNW 15 G 20 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 PM Sat Aug 30 2025 45F 46F / 27% N 15 G 24 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 12 AM Sun Aug 31 2025 44F 45F / 29% NE 16 G 24 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 01 AM Sun Aug 31 2025 42F 44F / 28% N 13 G 23 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 02 AM Sun Aug 31 2025 43F 44F / 31% NNE 14 G 19 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 03 AM Sun Aug 31 2025 43F 44F / 28% E 12 G 19 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 04 AM Sun Aug 31 2025 44F 44F / 30% SE 14 G 18 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 05 AM Sun Aug 31 2025 45F 46F / 31% SW 13 G 16 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 06 AM Sun Aug 31 2025 45F 45F / 34% S 13 G 15 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"