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 08-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 Mon Sep 08 2025 47F 46F / 45% SW 18 G 30 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Mon Sep 08 2025 47F 45F / 44% SW 19 G 32 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Mon Sep 08 2025 46F 46F / 37% SW 19 G 31 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Mon Sep 08 2025 46F 45F / 29% WSW 19 G 31 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Mon Sep 08 2025 45F 45F / 22% WSW 19 G 30 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Mon Sep 08 2025 45F 44F / 25% WSW 18 G 29 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Mon Sep 08 2025 44F 44F / 25% WSW 19 G 29 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Mon Sep 08 2025 44F 44F / 30% WSW 19 G 30 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Mon Sep 08 2025 44F 44F / 31% WSW 18 G 27 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Mon Sep 08 2025 46F 45F / 33% SW 17 G 24 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Mon Sep 08 2025 50F 45F / 29% SW 14 G 24 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Mon Sep 08 2025 55F 47F / 25% SW 12 G 23 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Mon Sep 08 2025 58F 49F / 28% SW 12 G 21 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Mon Sep 08 2025 59F 49F / 32% SW 12 G 22 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Mon Sep 08 2025 60F 50F / 35% SW 10 G 22 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Mon Sep 08 2025 60F 50F / 36% SW 11 G 22 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Mon Sep 08 2025 60F 51F / 35% SW 11 G 23 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Mon Sep 08 2025 60F 51F / 37% SW 12 G 22 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Mon Sep 08 2025 57F 50F / 39% SW 12 G 22 MPH 13100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Mon Sep 08 2025 55F 49F / 44% SW 12 G 21 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Mon Sep 08 2025 49F 46F / 63% SSW 13 G 23 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Mon Sep 08 2025 49F 47F / 52% SSW 15 G 24 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Mon Sep 08 2025 47F 44F / 66% SW 10 G 12 MPH 13700 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 23 11 PM Mon Sep 08 2025 49F 46F / 54% S 13 G 22 MPH 13400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 24 12 AM Tue Sep 09 2025 48F 45F / 55% S 13 G 20 MPH 13200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 25 01 AM Tue Sep 09 2025 47F 44F / 47% S 16 G 27 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 26 02 AM Tue Sep 09 2025 46F 44F / 53% SW 17 G 29 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 27 03 AM Tue Sep 09 2025 46F 44F / 46% SSW 17 G 28 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 28 04 AM Tue Sep 09 2025 46F 43F / 49% SSW 17 G 30 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 29 05 AM Tue Sep 09 2025 45F 43F / 49% SSW 17 G 31 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 30 06 AM Tue Sep 09 2025 44F 43F / 45% SSW 18 G 31 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 31 07 AM Tue Sep 09 2025 44F 42F / 48% S 18 G 31 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 32 08 AM Tue Sep 09 2025 45F 42F / 34% S 18 G 31 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 33 09 AM Tue Sep 09 2025 46F 43F / 37% S 16 G 32 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 34 10 AM Tue Sep 09 2025 49F 44F / 34% S 14 G 31 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 35 11 AM Tue Sep 09 2025 52F 45F / 34% S 13 G 30 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 36 12 PM Tue Sep 09 2025 55F 46F / 36% S 14 G 31 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 37 01 PM Tue Sep 09 2025 58F 49F / 38% SSE 15 G 33 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 38 02 PM Tue Sep 09 2025 59F 49F / 32% SSE 13 G 31 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 39 03 PM Tue Sep 09 2025 59F 51F / 34% SSW 10 G 26 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 40 04 PM Tue Sep 09 2025 60F 52F / 42% SSW 11 G 26 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 41 05 PM Tue Sep 09 2025 61F 52F / 40% SSW 12 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 42 06 PM Tue Sep 09 2025 58F 52F / 40% SSW 14 G 28 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 43 07 PM Tue Sep 09 2025 55F 51F / 33% SSW 15 G 30 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 44 08 PM Tue Sep 09 2025 51F 49F / 33% SW 15 G 28 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 45 09 PM Tue Sep 09 2025 50F 48F / 31% SSW 15 G 32 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 46 10 PM Tue Sep 09 2025 49F 47F / 24% SSW 16 G 32 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 47 11 PM Tue Sep 09 2025 48F 47F / 25% S 15 G 33 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 48 12 AM Wed Sep 10 2025 48F 46F / 17% SSE 15 G 33 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0"