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 12Z 21-May-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 AM Wed May 21 2025 29F 25F / 76% WNW 23 G 31 MPH 8400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Wed May 21 2025 28F 25F / 69% WNW 25 G 35 MPH 6800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Wed May 21 2025 30F 26F / 73% WNW 24 G 34 MPH 6800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Wed May 21 2025 31F 26F / 72% W 23 G 31 MPH 6700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Wed May 21 2025 33F 27F / 65% WNW 22 G 31 MPH 6800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Wed May 21 2025 37F 28F / 63% W 21 G 30 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Wed May 21 2025 39F 30F / 53% W 20 G 30 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Wed May 21 2025 41F 31F / 47% W 19 G 28 MPH 7800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Wed May 21 2025 42F 32F / 44% W 17 G 25 MPH 8000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Wed May 21 2025 44F 34F / 42% W 15 G 24 MPH 8100 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Wed May 21 2025 44F 35F / 40% W 14 G 22 MPH 8300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Wed May 21 2025 44F 36F / 40% W 12 G 19 MPH 8600 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Wed May 21 2025 43F 37F / 41% W 13 G 20 MPH 8800 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Wed May 21 2025 41F 36F / 32% W 15 G 23 MPH 8900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Wed May 21 2025 38F 35F / 31% WSW 18 G 25 MPH 9000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Wed May 21 2025 37F 35F / 23% W 20 G 27 MPH 9000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Wed May 21 2025 37F 36F / 23% WSW 19 G 26 MPH 9100 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Wed May 21 2025 38F 36F / 22% WSW 17 G 22 MPH 9200 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Thu May 22 2025 38F 37F / 24% WSW 16 G 23 MPH 9500 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Thu May 22 2025 39F 37F / 23% SW 17 G 24 MPH 9600 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Thu May 22 2025 39F 37F / 30% SW 16 G 24 MPH 9700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Thu May 22 2025 39F 37F / 35% SW 19 G 30 MPH 9800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Thu May 22 2025 39F 37F / 34% SSW 18 G 32 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Thu May 22 2025 38F 37F / 36% SSW 20 G 32 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Thu May 22 2025 37F 37F / 41% SSW 21 G 33 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Thu May 22 2025 37F 37F / 38% SW 21 G 33 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 26 08 AM Thu May 22 2025 38F 37F / 40% SW 21 G 33 MPH 10400 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 27 09 AM Thu May 22 2025 41F 39F / 42% SW 20 G 32 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 28 10 AM Thu May 22 2025 44F 39F / 42% SW 19 G 33 MPH 10300 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 29 11 AM Thu May 22 2025 47F 40F / 36% SSW 19 G 35 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 12 PM Thu May 22 2025 50F 42F / 32% SW 18 G 36 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 01 PM Thu May 22 2025 53F 42F / 34% SSW 18 G 34 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 02 PM Thu May 22 2025 56F 44F / 26% SW 17 G 33 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 33 03 PM Thu May 22 2025 56F 45F / 25% SW 16 G 34 MPH 11100 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 34 04 PM Thu May 22 2025 57F 46F / 25% SW 16 G 32 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 35 05 PM Thu May 22 2025 56F 47F / 29% SSW 17 G 33 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 36 06 PM Thu May 22 2025 54F 47F / 26% SW 16 G 30 MPH 11400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 37 07 PM Thu May 22 2025 54F 50F / 21% WSW 20 G 37 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 38 08 PM Thu May 22 2025 48F 46F / 33% W 19 G 31 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 39 09 PM Thu May 22 2025 44F 43F / 29% W 15 G 25 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 40 10 PM Thu May 22 2025 44F 43F / 30% W 21 G 34 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 41 11 PM Thu May 22 2025 42F 41F / 32% WNW 22 G 36 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 42 12 AM Fri May 23 2025 41F 40F / 27% W 24 G 37 MPH 9800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 43 01 AM Fri May 23 2025 40F 39F / 34% W 18 G 29 MPH 9800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 44 02 AM Fri May 23 2025 41F 38F / 35% W 18 G 30 MPH 9800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 45 03 AM Fri May 23 2025 39F 37F / 41% W 19 G 29 MPH 9700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 46 04 AM Fri May 23 2025 39F 37F / 39% W 19 G 30 MPH 9600 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 47 05 AM Fri May 23 2025 37F 37F / 35% W 21 G 28 MPH 9400 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 48 06 AM Fri May 23 2025 36F 36F / 33% WSW 18 G 28 MPH 9300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0"