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 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 AM Sat Aug 30 2025 43F 41F / 63% NW 15 G 21 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Sat Aug 30 2025 42F 40F / 70% NW 14 G 23 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Sat Aug 30 2025 42F 40F / 64% W 16 G 24 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Sat Aug 30 2025 41F 40F / 67% NW 16 G 24 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Sat Aug 30 2025 41F 39F / 57% NNW 16 G 24 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Sat Aug 30 2025 41F 39F / 63% NNW 11 G 23 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Sat Aug 30 2025 41F 39F / 64% NNW 15 G 22 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Sat Aug 30 2025 40F 39F / 70% NNW 14 G 21 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Sat Aug 30 2025 41F 39F / 61% NNW 13 G 21 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Sat Aug 30 2025 43F 41F / 61% NNW 11 G 16 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Sat Aug 30 2025 46F 42F / 51% NW 10 G 17 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Sat Aug 30 2025 51F 44F / 48% NW 9 G 17 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Sat Aug 30 2025 54F 46F / 40% NW 9 G 14 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Sat Aug 30 2025 56F 48F / 37% NW 7 G 12 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Sat Aug 30 2025 58F 49F / 38% NNW 5 G 12 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Sat Aug 30 2025 59F 49F / 31% NW 7 G 13 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Sat Aug 30 2025 58F 49F / 55% WNW 8 G 16 MPH 12900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Sat Aug 30 2025 57F 49F / 57% WNW 13 G 22 MPH 13000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Sat Aug 30 2025 55F 49F / 55% WNW 11 G 19 MPH 12700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Sat Aug 30 2025 52F 47F / 68% WNW 11 G 17 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Sat Aug 30 2025 48F 44F / 72% WNW 13 G 19 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Sat Aug 30 2025 46F 45F / 56% NW 12 G 19 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Sat Aug 30 2025 45F 44F / 40% NNW 13 G 21 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 PM Sat Aug 30 2025 44F 43F / 41% NNE 13 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 AM Sun Aug 31 2025 44F 43F / 47% NE 14 G 25 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 AM Sun Aug 31 2025 43F 43F / 47% NE 15 G 26 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 AM Sun Aug 31 2025 42F 42F / 45% ENE 13 G 18 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 AM Sun Aug 31 2025 42F 43F / 38% ENE 12 G 18 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 AM Sun Aug 31 2025 42F 42F / 36% SE 12 G 17 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 AM Sun Aug 31 2025 43F 43F / 37% S 12 G 17 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 AM Sun Aug 31 2025 43F 43F / 36% WSW 12 G 16 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 AM Sun Aug 31 2025 43F 42F / 39% SSW 13 G 17 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 AM Sun Aug 31 2025 44F 43F / 37% S 13 G 16 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 AM Sun Aug 31 2025 46F 45F / 42% S 12 G 16 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 AM Sun Aug 31 2025 49F 46F / 37% SSE 10 G 19 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 AM Sun Aug 31 2025 53F 47F / 38% S 8 G 17 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 PM Sun Aug 31 2025 57F 49F / 29% WSW 9 G 16 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 PM Sun Aug 31 2025 62F 54F / 14% W 9 G 14 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 PM Sun Aug 31 2025 63F 54F / 6% W 7 G 17 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 PM Sun Aug 31 2025 64F 55F / 19% W 10 G 15 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 PM Sun Aug 31 2025 64F 55F / 25% W 10 G 17 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 PM Sun Aug 31 2025 63F 55F / 16% W 8 G 14 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 PM Sun Aug 31 2025 60F 56F / 27% W 7 G 12 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 PM Sun Aug 31 2025 57F 54F / 20% W 9 G 13 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 PM Sun Aug 31 2025 52F 51F / 26% WNW 9 G 14 MPH 12600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 PM Sun Aug 31 2025 49F 50F / 33% NW 11 G 19 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 PM Sun Aug 31 2025 48F 49F / 31% NW 12 G 18 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 PM Sun Aug 31 2025 47F 49F / 33% SE 13 G 18 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 AM Mon Sep 01 2025 48F 48F / 26% SE 11 G 18 MPH 12800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"