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 27-Mar-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 Thu Mar 27 2025 42F 34F / 39% SSW 20 G 42 MPH 9500 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Thu Mar 27 2025 44F 34F / 46% SSW 18 G 40 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Thu Mar 27 2025 46F 35F / 40% S 17 G 37 MPH 9500 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Thu Mar 27 2025 46F 36F / 38% SSW 18 G 39 MPH 9600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Thu Mar 27 2025 45F 36F / 36% SSW 20 G 45 MPH 9600 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Thu Mar 27 2025 44F 36F / 31% SSW 23 G 48 MPH 9600 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Thu Mar 27 2025 41F 36F / 32% SSW 24 G 50 MPH 9700 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Thu Mar 27 2025 39F 35F / 33% S 23 G 45 MPH 9500 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Thu Mar 27 2025 38F 34F / 39% SSW 21 G 43 MPH 9500 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Thu Mar 27 2025 37F 33F / 33% SSW 26 G 52 MPH 9600 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Thu Mar 27 2025 36F 32F / 32% SSW 27 G 51 MPH 9800 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Thu Mar 27 2025 35F 31F / 38% SSW 29 G 53 MPH 9500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Fri Mar 28 2025 31F 27F / 77% WSW 15 G 27 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Fri Mar 28 2025 31F 27F / 77% W 18 G 31 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Fri Mar 28 2025 30F 25F / 68% WNW 19 G 33 MPH 8100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Fri Mar 28 2025 29F 24F / 86% WNW 17 G 29 MPH 8200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Fri Mar 28 2025 29F 24F / 79% NW 16 G 23 MPH 8000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Fri Mar 28 2025 28F 23F / 66% WNW 11 G 18 MPH 8200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Fri Mar 28 2025 27F 23F / 71% W 9 G 14 MPH 6600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Fri Mar 28 2025 27F 23F / 70% SSW 12 G 21 MPH 6700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Fri Mar 28 2025 27F 24F / 66% SSW 12 G 20 MPH 7100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Fri Mar 28 2025 26F 24F / 67% SSW 12 G 21 MPH 6800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Fri Mar 28 2025 30F 25F / 70% S 9 G 18 MPH 7100 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Fri Mar 28 2025 32F 25F / 73% S 8 G 16 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Fri Mar 28 2025 33F 26F / 83% S 6 G 15 MPH 7100 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Fri Mar 28 2025 34F 27F / 90% S 8 G 18 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Fri Mar 28 2025 33F 26F / 80% SW 9 G 17 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Fri Mar 28 2025 33F 25F / 86% SW 10 G 19 MPH 7000 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Fri Mar 28 2025 32F 24F / 87% WSW 10 G 20 MPH 6700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Fri Mar 28 2025 31F 23F / 79% W 12 G 21 MPH 6900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 30 06 PM Fri Mar 28 2025 30F 22F / 76% W 12 G 23 MPH 6700 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 31 07 PM Fri Mar 28 2025 28F 21F / 73% W 13 G 22 MPH 6800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 32 08 PM Fri Mar 28 2025 24F 19F / 75% W 15 G 25 MPH 6900 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 33 09 PM Fri Mar 28 2025 22F 19F / 71% W 17 G 25 MPH 6800 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 34 10 PM Fri Mar 28 2025 23F 19F / 63% W 16 G 24 MPH 6800 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 35 11 PM Fri Mar 28 2025 22F 19F / 64% W 15 G 22 MPH 6800 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 36 12 AM Sat Mar 29 2025 22F 20F / 60% W 16 G 23 MPH 6600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 37 01 AM Sat Mar 29 2025 21F 19F / 63% WSW 14 G 21 MPH 6600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 38 02 AM Sat Mar 29 2025 21F 19F / 62% WSW 14 G 19 MPH 6500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 39 03 AM Sat Mar 29 2025 21F 18F / 63% SW 13 G 19 MPH 6500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 40 04 AM Sat Mar 29 2025 22F 18F / 66% SSW 13 G 23 MPH 6400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 41 05 AM Sat Mar 29 2025 21F 18F / 70% SSW 16 G 25 MPH 6300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 42 06 AM Sat Mar 29 2025 23F 19F / 70% S 15 G 24 MPH 6400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 43 07 AM Sat Mar 29 2025 23F 19F / 74% S 15 G 26 MPH 6400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 44 08 AM Sat Mar 29 2025 24F 20F / 73% SSE 14 G 26 MPH 6400 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 45 09 AM Sat Mar 29 2025 25F 21F / 79% SSE 14 G 26 MPH 6400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 46 10 AM Sat Mar 29 2025 27F 21F / 86% SSE 13 G 27 MPH 6400 FT 11:1 / 9% 0.02" / 0.2" 0.02" / 0.2" 47 11 AM Sat Mar 29 2025 28F 22F / 91% S 12 G 25 MPH 6600 FT 11:1 / 9% 0.04" / 0.4" 0.06" / 0.6" 48 12 PM Sat Mar 29 2025 30F 23F / 87% S 11 G 26 MPH 6700 FT 11:1 / 9% 0.06" / 0.7" 0.12" / 1.3"