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 11-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 12 PM Sun May 11 2025 52F 42F / 58% S 17 G 38 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Sun May 11 2025 52F 42F / 52% SSW 21 G 44 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Sun May 11 2025 53F 42F / 40% SSW 20 G 43 MPH 11900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Sun May 11 2025 53F 43F / 41% S 21 G 47 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Sun May 11 2025 51F 43F / 39% SSW 20 G 44 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Sun May 11 2025 51F 44F / 37% SW 24 G 48 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Sun May 11 2025 49F 44F / 39% SSW 23 G 46 MPH 11700 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Sun May 11 2025 47F 43F / 39% SSW 23 G 44 MPH 11500 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Sun May 11 2025 45F 42F / 41% SSW 25 G 49 MPH 11600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Sun May 11 2025 44F 41F / 34% SSW 26 G 50 MPH 11300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Sun May 11 2025 43F 40F / 36% SSW 29 G 56 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Sun May 11 2025 43F 40F / 43% SSW 32 G 59 MPH 10800 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Mon May 12 2025 41F 39F / 42% SW 29 G 56 MPH 10900 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Mon May 12 2025 41F 39F / 38% SW 31 G 57 MPH 11000 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Mon May 12 2025 40F 38F / 42% SW 30 G 53 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Mon May 12 2025 39F 38F / 41% SW 30 G 53 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Mon May 12 2025 39F 37F / 39% SW 30 G 55 MPH 10600 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Mon May 12 2025 39F 37F / 43% SW 30 G 54 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Mon May 12 2025 39F 37F / 48% SSW 29 G 56 MPH 10100 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Mon May 12 2025 39F 36F / 46% SSW 29 G 56 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Mon May 12 2025 40F 37F / 47% SSW 30 G 57 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Mon May 12 2025 41F 37F / 48% SSW 30 G 58 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Mon May 12 2025 42F 38F / 49% SSW 30 G 59 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Mon May 12 2025 44F 38F / 47% SSW 28 G 58 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Mon May 12 2025 49F 39F / 44% S 24 G 54 MPH 9700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Mon May 12 2025 50F 41F / 38% S 22 G 49 MPH 10000 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Mon May 12 2025 52F 41F / 32% S 21 G 49 MPH 10200 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Mon May 12 2025 51F 42F / 34% S 21 G 51 MPH 10200 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Mon May 12 2025 51F 41F / 29% S 23 G 50 MPH 10200 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Mon May 12 2025 50F 42F / 31% S 20 G 43 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Mon May 12 2025 47F 41F / 33% S 19 G 40 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Mon May 12 2025 44F 40F / 37% S 19 G 40 MPH 10300 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Mon May 12 2025 41F 38F / 37% S 20 G 44 MPH 10200 FT 3:1 / 33% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Mon May 12 2025 39F 37F / 32% SSW 23 G 46 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Mon May 12 2025 38F 36F / 35% SSW 25 G 49 MPH 9900 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Mon May 12 2025 38F 35F / 37% SSW 25 G 50 MPH 9400 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Tue May 13 2025 38F 34F / 37% SSW 28 G 54 MPH 9100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Tue May 13 2025 39F 35F / 42% SSW 29 G 56 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Tue May 13 2025 39F 35F / 47% SSW 30 G 59 MPH 8800 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Tue May 13 2025 38F 34F / 48% S 29 G 56 MPH 8500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Tue May 13 2025 38F 34F / 54% SSW 29 G 57 MPH 7700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Tue May 13 2025 37F 33F / 54% SSW 27 G 57 MPH 7600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Tue May 13 2025 36F 32F / 61% S 26 G 54 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Tue May 13 2025 36F 31F / 61% S 24 G 47 MPH 7100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Tue May 13 2025 36F 31F / 63% S 21 G 46 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Tue May 13 2025 35F 30F / 77% S 19 G 42 MPH 7200 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Tue May 13 2025 36F 30F / 77% S 19 G 41 MPH 7400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 47 11 AM Tue May 13 2025 38F 31F / 77% S 17 G 40 MPH 7500 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 48 12 PM Tue May 13 2025 39F 30F / 75% S 17 G 38 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0"