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 07-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 Sun Sep 07 2025 57F 49F / 51% SSW 10 G 20 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Sun Sep 07 2025 58F 50F / 51% SW 11 G 20 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Sun Sep 07 2025 60F 50F / 39% SSW 10 G 21 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Sun Sep 07 2025 60F 50F / 40% SSW 10 G 22 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Sun Sep 07 2025 57F 49F / 42% SW 8 G 15 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Sun Sep 07 2025 58F 51F / 35% SSW 9 G 20 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Sun Sep 07 2025 56F 51F / 33% SW 12 G 22 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Sun Sep 07 2025 53F 49F / 33% SW 13 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Sun Sep 07 2025 49F 46F / 39% WSW 15 G 25 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Sun Sep 07 2025 48F 46F / 45% WSW 18 G 29 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Sun Sep 07 2025 48F 46F / 42% SW 17 G 29 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Sun Sep 07 2025 48F 46F / 45% SSW 18 G 27 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Mon Sep 08 2025 47F 46F / 48% SSW 18 G 30 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Mon Sep 08 2025 47F 45F / 40% SW 20 G 36 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Mon Sep 08 2025 46F 45F / 34% SW 21 G 33 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Mon Sep 08 2025 45F 44F / 30% SW 22 G 33 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Mon Sep 08 2025 45F 44F / 27% SW 20 G 32 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Mon Sep 08 2025 44F 44F / 23% SW 21 G 34 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Mon Sep 08 2025 44F 44F / 18% WSW 21 G 33 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Mon Sep 08 2025 43F 43F / 23% WSW 21 G 32 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Mon Sep 08 2025 44F 43F / 26% WSW 20 G 30 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Mon Sep 08 2025 46F 45F / 26% WSW 18 G 27 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Mon Sep 08 2025 50F 45F / 23% WSW 16 G 26 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Mon Sep 08 2025 54F 46F / 36% SW 13 G 26 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Mon Sep 08 2025 56F 47F / 53% SW 12 G 24 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Mon Sep 08 2025 57F 48F / 50% SSW 13 G 24 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Mon Sep 08 2025 59F 49F / 46% SW 11 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Mon Sep 08 2025 59F 50F / 44% SW 12 G 26 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Mon Sep 08 2025 60F 50F / 44% SSW 11 G 25 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Mon Sep 08 2025 59F 50F / 49% SW 13 G 26 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Mon Sep 08 2025 56F 50F / 39% SW 14 G 26 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Mon Sep 08 2025 53F 49F / 45% SW 15 G 26 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Mon Sep 08 2025 49F 46F / 61% SW 15 G 26 MPH 13500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Mon Sep 08 2025 48F 46F / 55% SW 17 G 29 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Mon Sep 08 2025 49F 46F / 51% SSW 14 G 25 MPH 13600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Mon Sep 08 2025 48F 46F / 54% SSW 15 G 27 MPH 13300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Tue Sep 09 2025 48F 45F / 54% SSW 17 G 31 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Tue Sep 09 2025 47F 46F / 47% S 18 G 32 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Tue Sep 09 2025 47F 45F / 55% SSW 17 G 29 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Tue Sep 09 2025 46F 44F / 52% S 18 G 31 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Tue Sep 09 2025 45F 44F / 56% S 17 G 34 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Tue Sep 09 2025 45F 43F / 54% S 18 G 35 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Tue Sep 09 2025 45F 44F / 61% S 18 G 36 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Tue Sep 09 2025 45F 44F / 52% S 18 G 34 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Tue Sep 09 2025 45F 44F / 50% S 17 G 36 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Tue Sep 09 2025 47F 45F / 55% S 16 G 36 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Tue Sep 09 2025 49F 45F / 52% S 16 G 37 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Tue Sep 09 2025 53F 46F / 57% SSE 15 G 34 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Tue Sep 09 2025 56F 46F / 55% SSE 14 G 33 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"