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 00Z 06-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 06 PM Fri Sep 05 2025 57F 51F / 46% WNW 7 G 12 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Fri Sep 05 2025 53F 49F / 61% SW 7 G 11 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Fri Sep 05 2025 49F 46F / 78% WSW 9 G 13 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Fri Sep 05 2025 48F 46F / 70% SW 9 G 14 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Fri Sep 05 2025 47F 45F / 81% SSE 10 G 17 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Fri Sep 05 2025 47F 45F / 71% WNW 8 G 10 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Sat Sep 06 2025 47F 46F / 63% W 8 G 12 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Sat Sep 06 2025 47F 45F / 58% WSW 7 G 11 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Sat Sep 06 2025 45F 44F / 74% SSW 13 G 21 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Sat Sep 06 2025 45F 43F / 77% WSW 8 G 10 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Sat Sep 06 2025 45F 43F / 76% WNW 5 G 7 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 05 AM Sat Sep 06 2025 45F 43F / 89% ENE 7 G 10 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 06 AM Sat Sep 06 2025 44F 42F / 83% N 5 G 8 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 07 AM Sat Sep 06 2025 45F 42F / 83% SSE 8 G 16 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 08 AM Sat Sep 06 2025 46F 42F / 80% SE 9 G 18 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 09 AM Sat Sep 06 2025 47F 43F / 83% S 10 G 21 MPH 13700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 10 AM Sat Sep 06 2025 48F 43F / 86% S 6 G 16 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 11 AM Sat Sep 06 2025 50F 43F / 83% S 8 G 15 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 12 PM Sat Sep 06 2025 52F 44F / 91% SW 8 G 17 MPH 13800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 01 PM Sat Sep 06 2025 53F 45F / 85% SSW 9 G 22 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 02 PM Sat Sep 06 2025 55F 46F / 82% SW 12 G 25 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 03 PM Sat Sep 06 2025 53F 45F / 93% SW 11 G 25 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 04 PM Sat Sep 06 2025 50F 44F / 90% SW 16 G 29 MPH 13300 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 23 05 PM Sat Sep 06 2025 52F 45F / 90% WSW 18 G 30 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 24 06 PM Sat Sep 06 2025 49F 43F / 86% W 22 G 35 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 25 07 PM Sat Sep 06 2025 48F 43F / 79% WNW 24 G 38 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 26 08 PM Sat Sep 06 2025 45F 42F / 67% WNW 26 G 40 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 27 09 PM Sat Sep 06 2025 44F 42F / 68% WNW 26 G 37 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 28 10 PM Sat Sep 06 2025 44F 41F / 61% W 24 G 35 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 29 11 PM Sat Sep 06 2025 43F 41F / 65% W 21 G 30 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 30 12 AM Sun Sep 07 2025 44F 41F / 62% WNW 21 G 28 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 31 01 AM Sun Sep 07 2025 43F 42F / 60% WNW 20 G 29 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 32 02 AM Sun Sep 07 2025 44F 42F / 53% WNW 19 G 27 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 33 03 AM Sun Sep 07 2025 43F 41F / 54% W 15 G 21 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 34 04 AM Sun Sep 07 2025 43F 40F / 67% W 14 G 23 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 35 05 AM Sun Sep 07 2025 43F 41F / 71% WSW 19 G 29 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 36 06 AM Sun Sep 07 2025 42F 41F / 61% W 19 G 30 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 37 07 AM Sun Sep 07 2025 42F 41F / 66% WSW 18 G 25 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 38 08 AM Sun Sep 07 2025 44F 44F / 59% WSW 17 G 25 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 39 09 AM Sun Sep 07 2025 47F 46F / 58% WSW 15 G 25 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 40 10 AM Sun Sep 07 2025 50F 46F / 52% W 16 G 26 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 41 11 AM Sun Sep 07 2025 54F 47F / 43% WSW 13 G 21 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 42 12 PM Sun Sep 07 2025 58F 50F / 37% W 11 G 20 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 43 01 PM Sun Sep 07 2025 58F 51F / 34% WSW 12 G 24 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 44 02 PM Sun Sep 07 2025 58F 50F / 43% WSW 11 G 23 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 45 03 PM Sun Sep 07 2025 59F 51F / 46% SW 13 G 25 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 46 04 PM Sun Sep 07 2025 57F 50F / 37% SW 12 G 23 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 47 05 PM Sun Sep 07 2025 58F 51F / 50% SW 12 G 25 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 48 06 PM Sun Sep 07 2025 56F 51F / 44% SW 14 G 24 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0"