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 24-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 Sat Aug 23 2025 59F 55F / 69% WSW 11 G 18 MPH 15900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Sat Aug 23 2025 59F 55F / 71% SSW 8 G 12 MPH 16000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Sat Aug 23 2025 52F 51F / 86% SSW 11 G 17 MPH 15700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Sat Aug 23 2025 53F 52F / 69% WSW 10 G 13 MPH 15700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Sat Aug 23 2025 52F 52F / 79% SSE 12 G 17 MPH 15800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Sat Aug 23 2025 52F 52F / 69% S 11 G 17 MPH 15700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Sun Aug 24 2025 53F 52F / 61% WSW 9 G 15 MPH 15900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Sun Aug 24 2025 53F 50F / 64% W 13 G 21 MPH 15500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Sun Aug 24 2025 51F 50F / 69% W 11 G 19 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Sun Aug 24 2025 52F 50F / 65% WNW 12 G 18 MPH 15100 FT 0:1 / -% 0.01" / 0.0" 0.01" / 0.0" 10 04 AM Sun Aug 24 2025 52F 51F / 31% W 8 G 14 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.01" / 0.0" 11 05 AM Sun Aug 24 2025 53F 51F / 51% W 9 G 13 MPH 15100 FT 0:1 / -% 0.02" / 0.0" 0.03" / 0.0" 12 06 AM Sun Aug 24 2025 51F 50F / 38% WNW 8 G 11 MPH 15100 FT 0:1 / -% 0.03" / 0.0" 0.06" / 0.0" 13 07 AM Sun Aug 24 2025 52F 50F / 40% WSW 10 G 15 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.06" / 0.0" 14 08 AM Sun Aug 24 2025 50F 48F / 68% SSW 14 G 20 MPH 15000 FT 0:1 / -% 0.03" / 0.0" 0.09" / 0.0" 15 09 AM Sun Aug 24 2025 51F 48F / 81% WSW 12 G 19 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 16 10 AM Sun Aug 24 2025 52F 48F / 82% WSW 8 G 14 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 17 11 AM Sun Aug 24 2025 54F 48F / 98% W 8 G 15 MPH 14900 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 18 12 PM Sun Aug 24 2025 57F 50F / 84% W 7 G 12 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 19 01 PM Sun Aug 24 2025 57F 50F / 86% WSW 7 G 15 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 20 02 PM Sun Aug 24 2025 59F 50F / 86% W 5 G 13 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 21 03 PM Sun Aug 24 2025 60F 50F / 69% W 8 G 16 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 22 04 PM Sun Aug 24 2025 60F 51F / 63% W 12 G 19 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 23 05 PM Sun Aug 24 2025 62F 53F / 66% W 16 G 25 MPH 15000 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 24 06 PM Sun Aug 24 2025 58F 52F / 58% W 16 G 27 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 25 07 PM Sun Aug 24 2025 56F 51F / 67% W 16 G 25 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 26 08 PM Sun Aug 24 2025 54F 49F / 73% W 17 G 24 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 27 09 PM Sun Aug 24 2025 51F 48F / 91% W 14 G 19 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 28 10 PM Sun Aug 24 2025 51F 48F / 68% SW 12 G 17 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 29 11 PM Sun Aug 24 2025 51F 48F / 67% WSW 12 G 18 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 30 12 AM Mon Aug 25 2025 50F 48F / 66% WSW 12 G 15 MPH 15100 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 31 01 AM Mon Aug 25 2025 50F 48F / 74% WSW 11 G 17 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 32 02 AM Mon Aug 25 2025 49F 47F / 68% SW 10 G 17 MPH 14900 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 33 03 AM Mon Aug 25 2025 49F 46F / 72% SW 11 G 16 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 34 04 AM Mon Aug 25 2025 49F 46F / 67% SW 13 G 22 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 35 05 AM Mon Aug 25 2025 50F 46F / 72% WSW 15 G 24 MPH 14800 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 36 06 AM Mon Aug 25 2025 49F 46F / 71% SW 12 G 20 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 37 07 AM Mon Aug 25 2025 48F 46F / 80% SSW 11 G 16 MPH 14700 FT 0:1 / -% 0.00" / 0.0" 0.09" / 0.0" 38 08 AM Mon Aug 25 2025 49F 47F / 82% SSW 12 G 22 MPH 14700 FT 0:1 / -% 0.01" / 0.0" 0.10" / 0.0" 39 09 AM Mon Aug 25 2025 50F 48F / 72% SSW 15 G 25 MPH 14400 FT 0:1 / -% 0.10" / 0.0" 0.20" / 0.0" 40 10 AM Mon Aug 25 2025 50F 47F / 84% SSW 14 G 25 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 41 11 AM Mon Aug 25 2025 53F 49F / 88% SSW 13 G 22 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 42 12 PM Mon Aug 25 2025 57F 51F / 87% SSW 12 G 21 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 43 01 PM Mon Aug 25 2025 57F 51F / 76% SW 11 G 23 MPH 14500 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 44 02 PM Mon Aug 25 2025 59F 51F / 82% WSW 10 G 21 MPH 14300 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 45 03 PM Mon Aug 25 2025 59F 52F / 81% WSW 12 G 24 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 46 04 PM Mon Aug 25 2025 57F 51F / 61% WSW 10 G 21 MPH 13900 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 47 05 PM Mon Aug 25 2025 59F 52F / 60% WSW 11 G 19 MPH 14200 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0" 48 06 PM Mon Aug 25 2025 58F 52F / 75% W 12 G 19 MPH 14400 FT 0:1 / -% 0.00" / 0.0" 0.20" / 0.0"