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 25-Jun-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 Wed Jun 25 2025 53F 44F / 32% WSW 6 G 12 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Wed Jun 25 2025 55F 47F / 31% W 7 G 13 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Wed Jun 25 2025 57F 47F / 26% W 8 G 16 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Wed Jun 25 2025 58F 48F / 26% W 10 G 18 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Wed Jun 25 2025 57F 48F / 26% W 10 G 18 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Wed Jun 25 2025 56F 48F / 22% W 10 G 18 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Wed Jun 25 2025 54F 48F / 21% W 10 G 16 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Wed Jun 25 2025 51F 47F / 22% W 11 G 16 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Wed Jun 25 2025 48F 44F / 20% W 11 G 17 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Wed Jun 25 2025 45F 43F / 23% W 12 G 18 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Wed Jun 25 2025 44F 43F / 24% W 13 G 19 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Wed Jun 25 2025 44F 43F / 23% WSW 12 G 16 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Thu Jun 26 2025 44F 43F / 24% WSW 13 G 19 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Thu Jun 26 2025 44F 42F / 26% WSW 14 G 21 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Thu Jun 26 2025 44F 42F / 19% W 16 G 22 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Thu Jun 26 2025 44F 42F / 24% W 18 G 23 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Thu Jun 26 2025 44F 42F / 29% WNW 18 G 23 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Thu Jun 26 2025 44F 42F / 28% WNW 17 G 24 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Thu Jun 26 2025 43F 42F / 25% WNW 17 G 23 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Thu Jun 26 2025 43F 42F / 26% WNW 16 G 21 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Thu Jun 26 2025 43F 42F / 28% W 15 G 19 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Thu Jun 26 2025 45F 43F / 31% W 13 G 18 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Thu Jun 26 2025 49F 44F / 30% W 11 G 17 MPH 11200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Thu Jun 26 2025 54F 46F / 18% WSW 9 G 17 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Thu Jun 26 2025 58F 48F / 21% WSW 9 G 16 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Thu Jun 26 2025 59F 50F / 16% WSW 10 G 18 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Thu Jun 26 2025 61F 50F / 16% WSW 10 G 20 MPH 12000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Thu Jun 26 2025 61F 51F / 18% SW 12 G 23 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Thu Jun 26 2025 62F 52F / 14% SW 11 G 21 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Thu Jun 26 2025 61F 52F / 14% SW 11 G 21 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Thu Jun 26 2025 59F 52F / 17% SSW 11 G 20 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Thu Jun 26 2025 56F 51F / 16% SW 12 G 20 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Thu Jun 26 2025 53F 50F / 17% SW 14 G 22 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Thu Jun 26 2025 51F 49F / 19% SW 15 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Thu Jun 26 2025 51F 48F / 16% SW 17 G 26 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Thu Jun 26 2025 49F 48F / 20% SW 17 G 25 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Fri Jun 27 2025 49F 48F / 21% SW 17 G 27 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Fri Jun 27 2025 49F 49F / 23% SSW 20 G 34 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Fri Jun 27 2025 48F 49F / 24% SSW 19 G 31 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Fri Jun 27 2025 48F 48F / 21% SW 20 G 32 MPH 12400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Fri Jun 27 2025 48F 48F / 20% SW 21 G 31 MPH 12500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Fri Jun 27 2025 47F 47F / 18% WSW 19 G 30 MPH 12300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Fri Jun 27 2025 46F 46F / 22% WSW 17 G 26 MPH 12200 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Fri Jun 27 2025 47F 47F / 25% WSW 17 G 24 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Fri Jun 27 2025 49F 49F / 14% WSW 16 G 24 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Fri Jun 27 2025 51F 50F / 14% WSW 15 G 24 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Fri Jun 27 2025 54F 50F / 8% SW 12 G 21 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Fri Jun 27 2025 59F 51F / 10% WSW 10 G 18 MPH 11800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Fri Jun 27 2025 63F 53F / 10% SW 9 G 20 MPH 12100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0"