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 18Z 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 PM Fri Sep 05 2025 57F 49F / 54% NW 7 G 12 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Fri Sep 05 2025 58F 50F / 50% WNW 6 G 10 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Fri Sep 05 2025 60F 50F / 42% WNW 10 G 16 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Fri Sep 05 2025 60F 51F / 39% WNW 11 G 19 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Fri Sep 05 2025 60F 50F / 48% WNW 12 G 19 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Fri Sep 05 2025 58F 50F / 53% WNW 10 G 17 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Fri Sep 05 2025 56F 51F / 48% W 8 G 13 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Fri Sep 05 2025 54F 49F / 55% WNW 10 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Fri Sep 05 2025 50F 46F / 62% WNW 13 G 19 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Fri Sep 05 2025 48F 46F / 59% WNW 11 G 18 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Fri Sep 05 2025 48F 45F / 61% WSW 10 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Fri Sep 05 2025 47F 45F / 66% WSW 10 G 14 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sat Sep 06 2025 46F 45F / 62% SW 10 G 14 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sat Sep 06 2025 46F 45F / 55% SW 9 G 16 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sat Sep 06 2025 46F 44F / 51% SW 9 G 13 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Sat Sep 06 2025 45F 43F / 68% SSW 9 G 11 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Sat Sep 06 2025 45F 43F / 74% SSW 9 G 12 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Sat Sep 06 2025 45F 42F / 81% WSW 7 G 11 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Sat Sep 06 2025 45F 42F / 71% W 7 G 12 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Sat Sep 06 2025 45F 42F / 72% WSW 6 G 11 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Sat Sep 06 2025 45F 42F / 67% SSW 7 G 14 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Sat Sep 06 2025 46F 43F / 75% SSW 8 G 15 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Sat Sep 06 2025 48F 43F / 70% WSW 5 G 11 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Sat Sep 06 2025 49F 43F / 82% W 6 G 15 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Sat Sep 06 2025 49F 43F / 85% SW 6 G 15 MPH 13600 FT 0:1 / -% 0.04" / 0.0" 0.04" / 0.0" 25 01 PM Sat Sep 06 2025 51F 44F / 80% SW 9 G 20 MPH 13400 FT 0:1 / -% 0.01" / 0.0" 0.05" / 0.0" 26 02 PM Sat Sep 06 2025 51F 43F / 79% WSW 9 G 22 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 27 03 PM Sat Sep 06 2025 52F 44F / 91% WSW 13 G 25 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 28 04 PM Sat Sep 06 2025 52F 44F / 79% WSW 14 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 29 05 PM Sat Sep 06 2025 52F 44F / 86% W 12 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 30 06 PM Sat Sep 06 2025 51F 44F / 82% W 13 G 21 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 31 07 PM Sat Sep 06 2025 49F 44F / 89% W 15 G 24 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 32 08 PM Sat Sep 06 2025 46F 42F / 90% W 19 G 29 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 33 09 PM Sat Sep 06 2025 45F 42F / 70% W 19 G 29 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 34 10 PM Sat Sep 06 2025 45F 43F / 71% W 19 G 28 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 35 11 PM Sat Sep 06 2025 43F 42F / 67% WNW 21 G 28 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 36 12 AM Sun Sep 07 2025 44F 42F / 64% WNW 22 G 31 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 37 01 AM Sun Sep 07 2025 44F 44F / 64% W 22 G 31 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 38 02 AM Sun Sep 07 2025 44F 43F / 66% WNW 20 G 28 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 39 03 AM Sun Sep 07 2025 44F 43F / 58% W 17 G 25 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 40 04 AM Sun Sep 07 2025 43F 43F / 63% WSW 17 G 23 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 41 05 AM Sun Sep 07 2025 43F 42F / 63% WSW 17 G 25 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 42 06 AM Sun Sep 07 2025 43F 42F / 65% WSW 17 G 23 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 43 07 AM Sun Sep 07 2025 43F 42F / 76% WSW 17 G 25 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 44 08 AM Sun Sep 07 2025 44F 43F / 63% W 18 G 26 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 45 09 AM Sun Sep 07 2025 47F 46F / 65% WSW 16 G 24 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 46 10 AM Sun Sep 07 2025 50F 46F / 57% WSW 13 G 23 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 47 11 AM Sun Sep 07 2025 55F 47F / 48% W 11 G 19 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0" 48 12 PM Sun Sep 07 2025 57F 49F / 40% W 9 G 18 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.05" / 0.0"