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 05-Sep-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 Sep 05 2025 48F 45F / 49% NW 11 G 17 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Fri Sep 05 2025 47F 45F / 43% NW 13 G 19 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Fri Sep 05 2025 47F 44F / 51% NW 11 G 20 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Fri Sep 05 2025 46F 44F / 56% NW 12 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Fri Sep 05 2025 46F 43F / 54% NW 13 G 21 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Fri Sep 05 2025 45F 43F / 60% W 11 G 20 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Fri Sep 05 2025 45F 43F / 60% NW 12 G 17 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Fri Sep 05 2025 44F 42F / 71% WNW 8 G 14 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Fri Sep 05 2025 44F 43F / 60% WNW 10 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Fri Sep 05 2025 46F 44F / 61% WNW 11 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Fri Sep 05 2025 50F 44F / 55% WNW 9 G 15 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Fri Sep 05 2025 54F 46F / 54% W 8 G 15 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Fri Sep 05 2025 57F 48F / 48% WNW 8 G 12 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Fri Sep 05 2025 58F 49F / 50% WNW 9 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Fri Sep 05 2025 59F 49F / 48% WNW 11 G 19 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Fri Sep 05 2025 58F 49F / 43% WNW 9 G 15 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Fri Sep 05 2025 59F 49F / 45% WNW 9 G 15 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Fri Sep 05 2025 59F 50F / 49% WNW 11 G 17 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Fri Sep 05 2025 56F 49F / 41% WNW 10 G 15 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Fri Sep 05 2025 54F 49F / 44% W 11 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Fri Sep 05 2025 50F 46F / 55% W 11 G 16 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Fri Sep 05 2025 48F 46F / 52% W 9 G 13 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Fri Sep 05 2025 47F 46F / 49% SSW 9 G 13 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 PM Fri Sep 05 2025 47F 45F / 50% SW 11 G 17 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 AM Sat Sep 06 2025 46F 44F / 55% WSW 11 G 16 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 AM Sat Sep 06 2025 45F 43F / 59% WSW 13 G 22 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 AM Sat Sep 06 2025 44F 43F / 68% WSW 11 G 14 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 AM Sat Sep 06 2025 45F 43F / 58% W 9 G 10 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 AM Sat Sep 06 2025 45F 43F / 69% W 9 G 12 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 AM Sat Sep 06 2025 45F 42F / 75% W 10 G 15 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 AM Sat Sep 06 2025 44F 41F / 81% W 11 G 16 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 AM Sat Sep 06 2025 43F 41F / 82% W 9 G 15 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 AM Sat Sep 06 2025 44F 41F / 76% W 9 G 13 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 AM Sat Sep 06 2025 45F 42F / 78% W 9 G 14 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 AM Sat Sep 06 2025 47F 42F / 78% NW 6 G 11 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 AM Sat Sep 06 2025 48F 43F / 74% WNW 4 G 11 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 PM Sat Sep 06 2025 49F 44F / 82% SSW 7 G 12 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 PM Sat Sep 06 2025 51F 46F / 77% SSE 7 G 16 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 PM Sat Sep 06 2025 51F 46F / 80% S 7 G 18 MPH 13500 FT 0:1 / -% 0.02" / 0.0" 0.02" / 0.0" 39 03 PM Sat Sep 06 2025 50F 45F / 87% SW 10 G 19 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.02" / 0.0" 40 04 PM Sat Sep 06 2025 49F 45F / 86% SW 9 G 18 MPH 13500 FT 0:1 / -% 0.01" / 0.0" 0.03" / 0.0" 41 05 PM Sat Sep 06 2025 53F 47F / 84% SW 7 G 13 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 42 06 PM Sat Sep 06 2025 52F 47F / 85% WSW 9 G 16 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 43 07 PM Sat Sep 06 2025 49F 45F / 100% W 13 G 19 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 44 08 PM Sat Sep 06 2025 44F 42F / 94% W 15 G 19 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 45 09 PM Sat Sep 06 2025 43F 42F / 84% WSW 15 G 24 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 46 10 PM Sat Sep 06 2025 43F 42F / 91% W 20 G 28 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 47 11 PM Sat Sep 06 2025 43F 43F / 78% W 20 G 29 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0" 48 12 AM Sun Sep 07 2025 44F 43F / 66% WNW 23 G 35 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.03" / 0.0"