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 05-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 Mon May 05 2025 37F 29F / 98% NNE 8 G 17 MPH 10100 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Mon May 05 2025 38F 30F / 100% NW 7 G 15 MPH 9900 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Mon May 05 2025 38F 30F / 94% NNW 10 G 17 MPH 10000 FT 6:1 / 17% 0.15" / 0.9" 0.15" / 0.9" 3 03 PM Mon May 05 2025 37F 30F / 91% ESE 9 G 21 MPH 10100 FT 5:1 / 20% 0.33" / 1.6" 0.48" / 2.5" 4 04 PM Mon May 05 2025 35F 29F / 98% SE 6 G 15 MPH 10200 FT 5:1 / 20% 0.22" / 1.1" 0.70" / 3.6" 5 05 PM Mon May 05 2025 33F 28F / 97% SSW 13 G 27 MPH 10100 FT 5:1 / 20% 0.27" / 1.4" 0.97" / 5.0" 6 06 PM Mon May 05 2025 32F 27F / 94% SE 14 G 27 MPH 9800 FT 7:1 / 14% 0.28" / 2.0" 1.25" / 7.0" 7 07 PM Mon May 05 2025 32F 27F / 94% SE 11 G 18 MPH 9600 FT 9:1 / 11% 0.15" / 1.3" 1.40" / 8.3" 8 08 PM Mon May 05 2025 31F 27F / 99% S 7 G 16 MPH 9400 FT 9:1 / 11% 0.04" / 0.4" 1.44" / 8.7" 9 09 PM Mon May 05 2025 30F 26F / 99% WNW 8 G 16 MPH 9300 FT 9:1 / 11% 0.01" / 0.1" 1.45" / 8.8" 10 10 PM Mon May 05 2025 30F 26F / 100% NW 9 G 15 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 11 11 PM Mon May 05 2025 30F 26F / 100% WNW 9 G 15 MPH 9100 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 12 12 AM Tue May 06 2025 30F 25F / 100% WNW 7 G 14 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 13 01 AM Tue May 06 2025 29F 25F / 100% NW 7 G 14 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 14 02 AM Tue May 06 2025 30F 25F / 100% ESE 6 G 9 MPH 8300 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 15 03 AM Tue May 06 2025 30F 25F / 100% NNE 7 G 11 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 16 04 AM Tue May 06 2025 31F 25F / 100% ENE 9 G 13 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 17 05 AM Tue May 06 2025 30F 26F / 99% ENE 8 G 12 MPH 8900 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 18 06 AM Tue May 06 2025 29F 25F / 100% E 8 G 14 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 1.45" / 8.8" 19 07 AM Tue May 06 2025 30F 25F / 100% E 6 G 13 MPH 8600 FT 9:1 / 11% 0.01" / 0.1" 1.46" / 8.9" 20 08 AM Tue May 06 2025 31F 25F / 100% ESE 12 G 28 MPH 8400 FT 8:1 / 12% 0.03" / 0.2" 1.49" / 9.1" 21 09 AM Tue May 06 2025 31F 25F / 100% ESE 10 G 28 MPH 8900 FT 7:1 / 14% 0.02" / 0.1" 1.51" / 9.2" 22 10 AM Tue May 06 2025 32F 28F / 94% ESE 8 G 23 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 1.51" / 9.2" 23 11 AM Tue May 06 2025 34F 27F / 100% E 8 G 22 MPH 8900 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 24 12 PM Tue May 06 2025 36F 29F / 90% E 6 G 19 MPH 9000 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 25 01 PM Tue May 06 2025 38F 31F / 90% E 7 G 19 MPH 9300 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 26 02 PM Tue May 06 2025 40F 31F / 98% ENE 4 G 13 MPH 9700 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 27 03 PM Tue May 06 2025 40F 31F / 99% NNE 4 G 16 MPH 10000 FT 7:1 / 14% 0.00" / 0.0" 1.51" / 9.2" 28 04 PM Tue May 06 2025 38F 31F / 100% N 8 G 20 MPH 9900 FT 8:1 / 12% 0.00" / 0.0" 1.51" / 9.2" 29 05 PM Tue May 06 2025 37F 29F / 100% NNW 12 G 27 MPH 9800 FT 9:1 / 11% 0.00" / 0.0" 1.51" / 9.2" 30 06 PM Tue May 06 2025 37F 30F / 100% NNW 17 G 33 MPH 9700 FT 7:1 / 14% 0.00" / 0.0" 1.51" / 9.2" 31 07 PM Tue May 06 2025 35F 29F / 100% N 18 G 36 MPH 9300 FT 7:1 / 14% 0.00" / 0.0" 1.51" / 9.2" 32 08 PM Tue May 06 2025 33F 29F / 94% NNE 14 G 24 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 33 09 PM Tue May 06 2025 31F 30F / 80% ENE 10 G 22 MPH 9500 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 34 10 PM Tue May 06 2025 33F 30F / 81% ENE 9 G 22 MPH 9800 FT 9:1 / 11% 0.00" / 0.0" 1.51" / 9.2" 35 11 PM Tue May 06 2025 33F 30F / 82% E 13 G 22 MPH 10300 FT 3:1 / 33% 0.00" / 0.0" 1.51" / 9.2" 36 12 AM Wed May 07 2025 34F 31F / 80% E 17 G 30 MPH 10500 FT 0:1 / -% 0.00" / 0.0" 1.51" / 9.2" 37 01 AM Wed May 07 2025 34F 32F / 83% E 16 G 30 MPH 10300 FT 0:1 / -% 0.00" / 0.0" 1.51" / 9.2" 38 02 AM Wed May 07 2025 33F 31F / 87% E 17 G 29 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 1.51" / 9.2" 39 03 AM Wed May 07 2025 32F 30F / 88% E 18 G 31 MPH 9800 FT 7:1 / 14% 0.00" / 0.0" 1.51" / 9.2" 40 04 AM Wed May 07 2025 31F 30F / 84% E 16 G 26 MPH 9400 FT 10:1 / 10% 0.00" / 0.0" 1.51" / 9.2" 41 05 AM Wed May 07 2025 31F 30F / 72% E 16 G 25 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 42 06 AM Wed May 07 2025 31F 30F / 65% E 15 G 22 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 43 07 AM Wed May 07 2025 32F 31F / 65% ENE 13 G 19 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 44 08 AM Wed May 07 2025 32F 32F / 64% NE 11 G 18 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 45 09 AM Wed May 07 2025 33F 32F / 69% NE 10 G 15 MPH 9400 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 46 10 AM Wed May 07 2025 35F 33F / 71% ENE 8 G 16 MPH 9500 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 47 11 AM Wed May 07 2025 38F 33F / 74% NE 7 G 13 MPH 9600 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2" 48 12 PM Wed May 07 2025 42F 35F / 74% NNW 5 G 11 MPH 9700 FT 11:1 / 9% 0.00" / 0.0" 1.51" / 9.2"