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 30-Apr-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 Tue Apr 29 2025 37F 30F / 74% WNW 9 G 17 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Tue Apr 29 2025 34F 28F / 76% WNW 12 G 19 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Tue Apr 29 2025 31F 26F / 65% WNW 12 G 18 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Tue Apr 29 2025 28F 25F / 54% WNW 12 G 18 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Tue Apr 29 2025 28F 25F / 63% WNW 15 G 22 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Tue Apr 29 2025 29F 26F / 66% WNW 19 G 29 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Wed Apr 30 2025 29F 26F / 79% WNW 17 G 28 MPH 8900 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Wed Apr 30 2025 30F 26F / 74% WNW 15 G 23 MPH 9100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 8 02 AM Wed Apr 30 2025 28F 25F / 70% WNW 15 G 22 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 9 03 AM Wed Apr 30 2025 29F 25F / 100% W 15 G 22 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 10 04 AM Wed Apr 30 2025 30F 25F / 100% W 18 G 27 MPH 9300 FT 8:1 / 12% 0.07" / 0.6" 0.07" / 0.6" 11 05 AM Wed Apr 30 2025 31F 26F / 100% WNW 20 G 30 MPH 9200 FT 7:1 / 14% 0.02" / 0.1" 0.09" / 0.7" 12 06 AM Wed Apr 30 2025 30F 25F / 100% W 20 G 31 MPH 9000 FT 8:1 / 12% 0.04" / 0.3" 0.13" / 1.0" 13 07 AM Wed Apr 30 2025 30F 24F / 100% WNW 20 G 30 MPH 8800 FT 7:1 / 14% 0.02" / 0.1" 0.15" / 1.1" 14 08 AM Wed Apr 30 2025 30F 24F / 100% WNW 19 G 27 MPH 8800 FT 8:1 / 12% 0.00" / 0.0" 0.15" / 1.1" 15 09 AM Wed Apr 30 2025 30F 24F / 100% WNW 18 G 28 MPH 8600 FT 8:1 / 12% 0.03" / 0.2" 0.18" / 1.3" 16 10 AM Wed Apr 30 2025 30F 24F / 100% WNW 17 G 27 MPH 9100 FT 9:1 / 11% 0.02" / 0.2" 0.20" / 1.5" 17 11 AM Wed Apr 30 2025 32F 24F / 99% W 20 G 33 MPH 8400 FT 8:1 / 12% 0.00" / 0.0" 0.20" / 1.5" 18 12 PM Wed Apr 30 2025 32F 25F / 98% WNW 18 G 34 MPH 8400 FT 7:1 / 14% 0.11" / 0.8" 0.31" / 2.3" 19 01 PM Wed Apr 30 2025 33F 25F / 99% WNW 17 G 28 MPH 8200 FT 8:1 / 12% 0.00" / 0.0" 0.31" / 2.3" 20 02 PM Wed Apr 30 2025 36F 26F / 100% WNW 14 G 24 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 21 03 PM Wed Apr 30 2025 36F 27F / 93% WNW 13 G 20 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 22 04 PM Wed Apr 30 2025 35F 27F / 86% WNW 13 G 21 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 23 05 PM Wed Apr 30 2025 34F 26F / 82% WNW 14 G 21 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 24 06 PM Wed Apr 30 2025 32F 26F / 72% WNW 15 G 23 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 25 07 PM Wed Apr 30 2025 31F 25F / 95% WNW 16 G 24 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 26 08 PM Wed Apr 30 2025 29F 23F / 85% WNW 19 G 28 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 27 09 PM Wed Apr 30 2025 26F 23F / 83% NW 17 G 24 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 28 10 PM Wed Apr 30 2025 26F 22F / 88% SW 15 G 22 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 29 11 PM Wed Apr 30 2025 25F 21F / 89% NW 16 G 22 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 30 12 AM Thu May 01 2025 24F 21F / 73% NW 17 G 24 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 31 01 AM Thu May 01 2025 24F 21F / 75% SE 14 G 19 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 32 02 AM Thu May 01 2025 23F 21F / 72% E 13 G 19 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 33 03 AM Thu May 01 2025 23F 20F / 86% ESE 13 G 17 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 34 04 AM Thu May 01 2025 23F 20F / 87% ESE 12 G 19 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 35 05 AM Thu May 01 2025 23F 20F / 84% NNW 14 G 20 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 36 06 AM Thu May 01 2025 23F 19F / 89% N 14 G 20 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 37 07 AM Thu May 01 2025 22F 20F / 72% NNW 13 G 19 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 38 08 AM Thu May 01 2025 24F 22F / 70% NNW 15 G 22 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 39 09 AM Thu May 01 2025 26F 24F / 72% NNW 14 G 21 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 40 10 AM Thu May 01 2025 29F 25F / 69% NNW 13 G 19 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 41 11 AM Thu May 01 2025 32F 26F / 72% N 11 G 17 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 42 12 PM Thu May 01 2025 34F 27F / 69% N 9 G 15 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 43 01 PM Thu May 01 2025 36F 29F / 79% NNW 7 G 15 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.31" / 2.3" 44 02 PM Thu May 01 2025 39F 30F / 69% NNW 7 G 13 MPH 8200 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 45 03 PM Thu May 01 2025 41F 32F / 61% NNW 7 G 14 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 46 04 PM Thu May 01 2025 41F 33F / 67% NW 7 G 14 MPH 8600 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 47 05 PM Thu May 01 2025 41F 34F / 57% NW 6 G 12 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3" 48 06 PM Thu May 01 2025 39F 33F / 72% NW 9 G 15 MPH 8700 FT 9:1 / 11% 0.00" / 0.0" 0.31" / 2.3"