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 19-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 Mon May 19 2025 20F 14F / 97% WNW 23 G 35 MPH 5900 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Mon May 19 2025 19F 13F / 90% WNW 21 G 31 MPH 6100 FT 15:1 / 7% 0.01" / 0.2" 0.01" / 0.2" 2 08 AM Mon May 19 2025 19F 13F / 95% WNW 18 G 25 MPH 5800 FT 14:1 / 7% 0.05" / 0.7" 0.06" / 0.9" 3 09 AM Mon May 19 2025 19F 14F / 93% NW 17 G 26 MPH 5300 FT 15:1 / 7% 0.01" / 0.2" 0.07" / 1.1" 4 10 AM Mon May 19 2025 20F 15F / 84% NW 17 G 25 MPH 5400 FT 16:1 / 6% 0.00" / 0.0" 0.07" / 1.1" 5 11 AM Mon May 19 2025 23F 16F / 82% NW 16 G 25 MPH 5700 FT 16:1 / 6% 0.00" / 0.0" 0.07" / 1.1" 6 12 PM Mon May 19 2025 25F 18F / 77% NW 14 G 25 MPH 6100 FT 12:1 / 8% 0.00" / 0.0" 0.07" / 1.1" 7 01 PM Mon May 19 2025 27F 19F / 75% NW 10 G 19 MPH 6200 FT 13:1 / 8% 0.00" / 0.0" 0.07" / 1.1" 8 02 PM Mon May 19 2025 30F 21F / 75% WNW 10 G 17 MPH 6500 FT 14:1 / 7% 0.00" / 0.0" 0.07" / 1.1" 9 03 PM Mon May 19 2025 31F 22F / 74% WNW 9 G 17 MPH 7200 FT 13:1 / 8% 0.00" / 0.0" 0.07" / 1.1" 10 04 PM Mon May 19 2025 31F 22F / 82% WNW 11 G 19 MPH 7000 FT 13:1 / 8% 0.00" / 0.0" 0.07" / 1.1" 11 05 PM Mon May 19 2025 30F 21F / 88% WNW 12 G 21 MPH 7100 FT 13:1 / 8% 0.00" / 0.0" 0.07" / 1.1" 12 06 PM Mon May 19 2025 29F 20F / 82% WNW 17 G 27 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.07" / 1.1" 13 07 PM Mon May 19 2025 28F 20F / 84% WNW 23 G 34 MPH 6900 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 14 08 PM Mon May 19 2025 26F 21F / 63% WNW 29 G 44 MPH 6800 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 15 09 PM Mon May 19 2025 25F 20F / 63% WNW 30 G 44 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 16 10 PM Mon May 19 2025 25F 21F / 58% WNW 30 G 44 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 17 11 PM Mon May 19 2025 25F 21F / 64% WNW 31 G 45 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 18 12 AM Tue May 20 2025 26F 22F / 64% WNW 33 G 49 MPH 6700 FT 7:1 / 14% 0.00" / 0.0" 0.07" / 1.1" 19 01 AM Tue May 20 2025 26F 22F / 72% WNW 32 G 47 MPH 6700 FT 7:1 / 14% 0.00" / 0.0" 0.07" / 1.1" 20 02 AM Tue May 20 2025 26F 22F / 72% WNW 29 G 44 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 21 03 AM Tue May 20 2025 26F 22F / 73% WNW 29 G 44 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 22 04 AM Tue May 20 2025 26F 22F / 76% WNW 29 G 43 MPH 6700 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 23 05 AM Tue May 20 2025 26F 22F / 78% WNW 28 G 40 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 24 06 AM Tue May 20 2025 26F 23F / 83% WNW 26 G 38 MPH 7100 FT 7:1 / 14% 0.00" / 0.0" 0.07" / 1.1" 25 07 AM Tue May 20 2025 26F 22F / 82% WNW 26 G 38 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 26 08 AM Tue May 20 2025 29F 24F / 81% WNW 24 G 35 MPH 7400 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 27 09 AM Tue May 20 2025 30F 25F / 86% WNW 20 G 29 MPH 7600 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 28 10 AM Tue May 20 2025 32F 25F / 86% W 17 G 25 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 29 11 AM Tue May 20 2025 35F 27F / 81% W 17 G 28 MPH 8400 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 30 12 PM Tue May 20 2025 38F 27F / 75% W 16 G 25 MPH 8500 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 31 01 PM Tue May 20 2025 40F 29F / 63% W 15 G 25 MPH 8800 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 32 02 PM Tue May 20 2025 43F 32F / 58% W 15 G 29 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 33 03 PM Tue May 20 2025 44F 33F / 56% W 18 G 32 MPH 9000 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 34 04 PM Tue May 20 2025 44F 34F / 55% W 19 G 31 MPH 9300 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 35 05 PM Tue May 20 2025 44F 34F / 57% W 18 G 30 MPH 9500 FT 10:1 / 10% 0.00" / 0.0" 0.07" / 1.1" 36 06 PM Tue May 20 2025 41F 33F / 59% W 17 G 28 MPH 9700 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 37 07 PM Tue May 20 2025 41F 36F / 63% WSW 17 G 30 MPH 9900 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 38 08 PM Tue May 20 2025 38F 35F / 65% WSW 20 G 32 MPH 9800 FT 9:1 / 11% 0.00" / 0.0" 0.07" / 1.1" 39 09 PM Tue May 20 2025 36F 33F / 61% WSW 21 G 32 MPH 9900 FT 7:1 / 14% 0.00" / 0.0" 0.07" / 1.1" 40 10 PM Tue May 20 2025 36F 34F / 56% WSW 22 G 33 MPH 9900 FT 7:1 / 14% 0.00" / 0.0" 0.07" / 1.1" 41 11 PM Tue May 20 2025 36F 33F / 52% W 21 G 34 MPH 9900 FT 8:1 / 12% 0.00" / 0.0" 0.07" / 1.1" 42 12 AM Wed May 21 2025 35F 33F / 51% W 25 G 38 MPH 9500 FT 10:1 / 10% 0.00" / 0.0" 0.07" / 1.1" 43 01 AM Wed May 21 2025 36F 33F / 58% W 24 G 39 MPH 9100 FT 10:1 / 10% 0.00" / 0.0" 0.07" / 1.1" 44 02 AM Wed May 21 2025 35F 33F / 50% W 25 G 38 MPH 9100 FT 10:1 / 10% 0.00" / 0.0" 0.07" / 1.1" 45 03 AM Wed May 21 2025 34F 32F / 50% W 27 G 39 MPH 9200 FT 11:1 / 9% 0.00" / 0.0" 0.07" / 1.1" 46 04 AM Wed May 21 2025 33F 31F / 52% W 27 G 38 MPH 9100 FT 11:1 / 9% 0.00" / 0.0" 0.07" / 1.1" 47 05 AM Wed May 21 2025 32F 31F / 55% W 27 G 37 MPH 8900 FT 10:1 / 10% 0.00" / 0.0" 0.07" / 1.1" 48 06 AM Wed May 21 2025 32F 31F / 59% W 27 G 40 MPH 8800 FT 7:1 / 14% 0.00" / 0.0" 0.07" / 1.1"