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 30-Aug-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 Sat Aug 30 2025 55F 46F / 54% NNW 6 G 14 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Sat Aug 30 2025 56F 47F / 57% WNW 7 G 13 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Sat Aug 30 2025 59F 48F / 43% NW 9 G 15 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Sat Aug 30 2025 59F 49F / 44% NW 10 G 17 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Sat Aug 30 2025 58F 49F / 48% WNW 10 G 17 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Sat Aug 30 2025 57F 50F / 47% WNW 9 G 17 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Sat Aug 30 2025 55F 50F / 48% WNW 8 G 16 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Sat Aug 30 2025 52F 47F / 63% NW 12 G 17 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Sat Aug 30 2025 48F 44F / 71% NW 13 G 19 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Sat Aug 30 2025 46F 44F / 59% NNW 12 G 19 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Sat Aug 30 2025 45F 44F / 45% N 13 G 21 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Sat Aug 30 2025 44F 43F / 43% NNE 15 G 24 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sun Aug 31 2025 44F 43F / 41% ENE 14 G 26 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sun Aug 31 2025 43F 43F / 48% ENE 14 G 25 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sun Aug 31 2025 42F 43F / 46% E 12 G 19 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Sun Aug 31 2025 42F 43F / 41% SE 12 G 15 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Sun Aug 31 2025 44F 43F / 37% SE 11 G 14 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Sun Aug 31 2025 44F 43F / 43% SSE 11 G 17 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Sun Aug 31 2025 44F 43F / 38% SSE 11 G 18 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Sun Aug 31 2025 44F 43F / 50% SSE 12 G 18 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Sun Aug 31 2025 44F 43F / 56% SSE 11 G 17 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Sun Aug 31 2025 46F 45F / 47% S 10 G 16 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Sun Aug 31 2025 49F 46F / 41% S 9 G 14 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Sun Aug 31 2025 54F 47F / 40% S 7 G 16 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Sun Aug 31 2025 57F 49F / 34% SW 6 G 13 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Sun Aug 31 2025 59F 50F / 28% WNW 7 G 12 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Sun Aug 31 2025 62F 52F / 18% NNW 5 G 12 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Sun Aug 31 2025 63F 53F / 18% SSW 7 G 17 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Sun Aug 31 2025 63F 53F / 9% WSW 5 G 15 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Sun Aug 31 2025 62F 53F / 18% WNW 8 G 14 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Sun Aug 31 2025 58F 53F / 16% W 8 G 15 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Sun Aug 31 2025 56F 52F / 22% WNW 7 G 11 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Sun Aug 31 2025 51F 48F / 34% WNW 11 G 15 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Sun Aug 31 2025 49F 48F / 29% WNW 10 G 16 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Sun Aug 31 2025 49F 48F / 33% NW 10 G 16 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Sun Aug 31 2025 48F 48F / 30% WSW 11 G 16 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Mon Sep 01 2025 48F 47F / 34% NNE 11 G 18 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Mon Sep 01 2025 49F 49F / 32% SSE 13 G 19 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Mon Sep 01 2025 48F 49F / 36% SE 13 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Mon Sep 01 2025 48F 48F / 27% SSE 15 G 21 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Mon Sep 01 2025 48F 49F / 32% SSE 15 G 23 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Mon Sep 01 2025 47F 48F / 30% SSE 15 G 24 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Mon Sep 01 2025 47F 48F / 26% S 16 G 24 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Mon Sep 01 2025 47F 47F / 31% SSW 15 G 22 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Mon Sep 01 2025 47F 48F / 28% S 14 G 22 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Mon Sep 01 2025 49F 50F / 40% SSW 12 G 20 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Mon Sep 01 2025 53F 51F / 28% SSW 10 G 19 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Mon Sep 01 2025 58F 51F / 23% SW 9 G 15 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Mon Sep 01 2025 62F 53F / 17% WSW 7 G 15 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"