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 25-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 06 PM Sun Aug 24 2025 59F 53F / 79% W 8 G 13 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Sun Aug 24 2025 57F 52F / 91% W 8 G 12 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Sun Aug 24 2025 53F 49F / 86% W 12 G 18 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Sun Aug 24 2025 52F 50F / 70% W 12 G 18 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Sun Aug 24 2025 52F 49F / 77% WSW 11 G 16 MPH 14600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Sun Aug 24 2025 50F 48F / 79% WSW 10 G 13 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Mon Aug 25 2025 50F 48F / 85% SW 11 G 16 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Mon Aug 25 2025 48F 46F / 100% W 12 G 16 MPH 14600 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 8 02 AM Mon Aug 25 2025 47F 46F / 100% SSE 10 G 18 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 9 03 AM Mon Aug 25 2025 47F 46F / 87% SSW 11 G 16 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 10 04 AM Mon Aug 25 2025 48F 46F / 75% WSW 10 G 16 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 11 05 AM Mon Aug 25 2025 48F 46F / 87% WSW 12 G 17 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 12 06 AM Mon Aug 25 2025 47F 45F / 81% WNW 10 G 14 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 13 07 AM Mon Aug 25 2025 47F 44F / 88% WNW 10 G 15 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 14 08 AM Mon Aug 25 2025 48F 45F / 86% WNW 9 G 12 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 15 09 AM Mon Aug 25 2025 49F 46F / 87% SW 9 G 14 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 16 10 AM Mon Aug 25 2025 51F 46F / 82% W 8 G 13 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 17 11 AM Mon Aug 25 2025 52F 45F / 100% SW 9 G 12 MPH 14500 FT 0:1 / -% 0.01" / 0.0" 0.02" / 0.0" 18 12 PM Mon Aug 25 2025 54F 47F / 89% WSW 6 G 11 MPH 14400 FT 0:1 / -% 0.05" / 0.0" 0.07" / 0.0" 19 01 PM Mon Aug 25 2025 55F 47F / 94% WSW 7 G 14 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 20 02 PM Mon Aug 25 2025 57F 49F / 90% W 9 G 16 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 21 03 PM Mon Aug 25 2025 57F 49F / 78% W 9 G 19 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 22 04 PM Mon Aug 25 2025 58F 50F / 74% WNW 10 G 16 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 23 05 PM Mon Aug 25 2025 59F 51F / 79% W 10 G 16 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 24 06 PM Mon Aug 25 2025 56F 51F / 73% WNW 10 G 18 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 25 07 PM Mon Aug 25 2025 55F 50F / 77% WNW 12 G 18 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 26 08 PM Mon Aug 25 2025 52F 47F / 87% W 14 G 19 MPH 14000 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 27 09 PM Mon Aug 25 2025 49F 46F / 100% WSW 12 G 16 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 28 10 PM Mon Aug 25 2025 50F 46F / 89% SSW 12 G 18 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 29 11 PM Mon Aug 25 2025 49F 46F / 97% S 11 G 18 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 30 12 AM Tue Aug 26 2025 48F 44F / 100% S 11 G 16 MPH 14100 FT 0:1 / -% 0.00" / 0.0" 0.07" / 0.0" 31 01 AM Tue Aug 26 2025 47F 45F / 88% S 12 G 20 MPH 14400 FT 0:1 / -% 0.02" / 0.0" 0.09" / 0.0" 32 02 AM Tue Aug 26 2025 47F 45F / 71% SSW 11 G 20 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 33 03 AM Tue Aug 26 2025 46F 44F / 79% SW 12 G 16 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 34 04 AM Tue Aug 26 2025 47F 44F / 76% SW 9 G 16 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 35 05 AM Tue Aug 26 2025 47F 44F / 88% SSW 10 G 18 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 36 06 AM Tue Aug 26 2025 47F 44F / 86% S 9 G 15 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 37 07 AM Tue Aug 26 2025 47F 45F / 83% S 10 G 13 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 38 08 AM Tue Aug 26 2025 47F 46F / 83% WSW 9 G 14 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 39 09 AM Tue Aug 26 2025 49F 47F / 80% WSW 9 G 14 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 40 10 AM Tue Aug 26 2025 50F 47F / 90% SW 7 G 12 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 41 11 AM Tue Aug 26 2025 52F 48F / 97% S 8 G 14 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 42 12 PM Tue Aug 26 2025 53F 49F / 100% SSE 6 G 12 MPH 14300 FT 0:1 / -% 0.01" / 0.0" 0.10" / 0.0" 43 01 PM Tue Aug 26 2025 55F 50F / 88% S 6 G 18 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.10" / 0.0" 44 02 PM Tue Aug 26 2025 56F 50F / 88% S 6 G 17 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.10" / 0.0" 45 03 PM Tue Aug 26 2025 56F 49F / 82% SSW 10 G 19 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.10" / 0.0" 46 04 PM Tue Aug 26 2025 51F 46F / 100% SSW 11 G 25 MPH 14400 FT 0:1 / -% 0.13" / 0.0" 0.23" / 0.0" 47 05 PM Tue Aug 26 2025 46F 44F / 96% SSE 12 G 29 MPH 15800 FT 0:1 / -% 0.15" / 0.0" 0.38" / 0.0" 48 06 PM Tue Aug 26 2025 49F 47F / 89% S 11 G 23 MPH 14400 FT 0:1 / -% 0.04" / 0.0" 0.42" / 0.0"