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 03-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 11 AM Mon Mar 03 2025 20F 11F / 93% NNW 10 G 22 MPH 4800 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 12 PM Mon Mar 03 2025 22F 13F / 95% NNW 12 G 22 MPH 5000 FT 18:1 / 6% 0.03" / 0.5" 0.03" / 0.5" 2 01 PM Mon Mar 03 2025 22F 13F / 98% ESE 10 G 21 MPH 5000 FT 17:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 3 02 PM Mon Mar 03 2025 24F 15F / 94% WNW 14 G 24 MPH 5000 FT 17:1 / 6% 0.01" / 0.2" 0.04" / 0.7" 4 03 PM Mon Mar 03 2025 24F 14F / 94% WNW 11 G 25 MPH 5100 FT 17:1 / 6% 0.02" / 0.3" 0.06" / 1.0" 5 04 PM Mon Mar 03 2025 24F 14F / 92% WNW 17 G 27 MPH 5300 FT 15:1 / 7% 0.00" / 0.0" 0.06" / 1.0" 6 05 PM Mon Mar 03 2025 22F 14F / 88% NW 17 G 26 MPH 5900 FT 14:1 / 7% 0.00" / 0.0" 0.06" / 1.0" 7 06 PM Mon Mar 03 2025 20F 13F / 92% NW 20 G 29 MPH 6000 FT 13:1 / 8% 0.01" / 0.1" 0.07" / 1.1" 8 07 PM Mon Mar 03 2025 18F 12F / 94% NW 21 G 33 MPH 5800 FT 13:1 / 8% 0.01" / 0.1" 0.08" / 1.2" 9 08 PM Mon Mar 03 2025 18F 12F / 91% NW 21 G 35 MPH 5700 FT 13:1 / 8% 0.00" / 0.0" 0.08" / 1.2" 10 09 PM Mon Mar 03 2025 18F 12F / 92% NW 23 G 37 MPH 5700 FT 14:1 / 7% 0.00" / 0.0" 0.08" / 1.2" 11 10 PM Mon Mar 03 2025 19F 12F / 93% NW 23 G 42 MPH 5900 FT 12:1 / 8% 0.00" / 0.0" 0.08" / 1.2" 12 11 PM Mon Mar 03 2025 19F 13F / 95% NNW 28 G 43 MPH 6100 FT 11:1 / 9% 0.01" / 0.1" 0.09" / 1.3" 13 12 AM Tue Mar 04 2025 20F 14F / 100% NW 27 G 40 MPH 6200 FT 12:1 / 8% 0.05" / 0.6" 0.14" / 1.9" 14 01 AM Tue Mar 04 2025 20F 14F / 99% WNW 24 G 36 MPH 6200 FT 11:1 / 9% 0.06" / 0.7" 0.20" / 2.6" 15 02 AM Tue Mar 04 2025 20F 14F / 98% WNW 21 G 31 MPH 6200 FT 12:1 / 8% 0.11" / 1.3" 0.31" / 3.9" 16 03 AM Tue Mar 04 2025 19F 13F / 88% NW 26 G 40 MPH 6200 FT 14:1 / 7% 0.08" / 1.1" 0.39" / 5.0" 17 04 AM Tue Mar 04 2025 19F 13F / 96% NW 26 G 38 MPH 6200 FT 14:1 / 7% 0.00" / 0.0" 0.39" / 5.0" 18 05 AM Tue Mar 04 2025 19F 12F / 99% NW 24 G 35 MPH 5900 FT 13:1 / 8% 0.00" / 0.0" 0.39" / 5.0" 19 06 AM Tue Mar 04 2025 19F 13F / 94% WNW 21 G 33 MPH 5800 FT 16:1 / 6% 0.00" / 0.0" 0.39" / 5.0" 20 07 AM Tue Mar 04 2025 17F 11F / 91% NW 21 G 32 MPH 5700 FT 14:1 / 7% 0.01" / 0.1" 0.40" / 5.1" 21 08 AM Tue Mar 04 2025 17F 11F / 90% NW 24 G 36 MPH 5500 FT 14:1 / 7% 0.01" / 0.1" 0.41" / 5.2" 22 09 AM Tue Mar 04 2025 18F 11F / 86% NW 20 G 28 MPH 5700 FT 16:1 / 6% 0.00" / 0.0" 0.41" / 5.2" 23 10 AM Tue Mar 04 2025 19F 12F / 89% NW 19 G 29 MPH 5600 FT 16:1 / 6% 0.00" / 0.0" 0.41" / 5.2" 24 11 AM Tue Mar 04 2025 22F 13F / 96% NW 19 G 28 MPH 5600 FT 18:1 / 6% 0.00" / 0.0" 0.41" / 5.2" 25 12 PM Tue Mar 04 2025 23F 14F / 93% NW 16 G 26 MPH 5800 FT 18:1 / 6% 0.00" / 0.0" 0.41" / 5.2" 26 01 PM Tue Mar 04 2025 25F 15F / 97% WNW 15 G 23 MPH 5600 FT 19:1 / 5% 0.00" / 0.0" 0.41" / 5.2" 27 02 PM Tue Mar 04 2025 25F 15F / 95% WNW 13 G 21 MPH 5700 FT 19:1 / 5% 0.00" / 0.0" 0.41" / 5.2" 28 03 PM Tue Mar 04 2025 23F 15F / 93% WNW 15 G 23 MPH 5800 FT 16:1 / 6% 0.01" / 0.2" 0.42" / 5.4" 29 04 PM Tue Mar 04 2025 23F 15F / 93% WNW 15 G 24 MPH 5900 FT 16:1 / 6% 0.00" / 0.0" 0.42" / 5.4" 30 05 PM Tue Mar 04 2025 21F 14F / 100% WNW 18 G 26 MPH 5900 FT 17:1 / 6% 0.00" / 0.0" 0.42" / 5.4" 31 06 PM Tue Mar 04 2025 19F 13F / 100% WNW 18 G 27 MPH 5900 FT 13:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 32 07 PM Tue Mar 04 2025 18F 13F / 85% WNW 17 G 25 MPH 5800 FT 13:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 33 08 PM Tue Mar 04 2025 16F 13F / 72% WNW 18 G 23 MPH 5700 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 34 09 PM Tue Mar 04 2025 16F 13F / 71% W 17 G 24 MPH 5600 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 35 10 PM Tue Mar 04 2025 15F 13F / 73% W 19 G 26 MPH 5700 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 36 11 PM Tue Mar 04 2025 15F 13F / 75% W 21 G 30 MPH 5600 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 37 12 AM Wed Mar 05 2025 15F 13F / 76% WNW 23 G 33 MPH 5500 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 38 01 AM Wed Mar 05 2025 15F 13F / 76% W 21 G 33 MPH 5200 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 39 02 AM Wed Mar 05 2025 15F 13F / 78% W 21 G 31 MPH 5200 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 40 03 AM Wed Mar 05 2025 16F 14F / 69% W 21 G 31 MPH 5200 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 41 04 AM Wed Mar 05 2025 16F 14F / 71% W 20 G 28 MPH 5300 FT 12:1 / 8% 0.00" / 0.0" 0.42" / 5.4" 42 05 AM Wed Mar 05 2025 18F 15F / 67% W 19 G 27 MPH 5300 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 43 06 AM Wed Mar 05 2025 18F 16F / 67% W 19 G 29 MPH 5200 FT 10:1 / 10% 0.00" / 0.0" 0.42" / 5.4" 44 07 AM Wed Mar 05 2025 19F 16F / 72% W 16 G 27 MPH 5100 FT 10:1 / 10% 0.00" / 0.0" 0.42" / 5.4" 45 08 AM Wed Mar 05 2025 19F 16F / 79% WSW 17 G 26 MPH 5200 FT 11:1 / 9% 0.00" / 0.0" 0.42" / 5.4" 46 09 AM Wed Mar 05 2025 22F 18F / 83% SW 15 G 25 MPH 5100 FT 11:1 / 9% 0.01" / 0.1" 0.43" / 5.5" 47 10 AM Wed Mar 05 2025 25F 20F / 81% SSW 14 G 26 MPH 5200 FT 12:1 / 8% 0.00" / 0.0" 0.43" / 5.5" 48 11 AM Wed Mar 05 2025 27F 21F / 82% SSW 15 G 28 MPH 5600 FT 12:1 / 8% 0.00" / 0.0" 0.43" / 5.5"