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 17-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 Sat May 17 2025 42F 33F / 67% SSW 16 G 33 MPH 9800 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Sat May 17 2025 43F 34F / 63% S 13 G 28 MPH 9700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Sat May 17 2025 45F 35F / 60% S 15 G 33 MPH 10100 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Sat May 17 2025 45F 35F / 64% SSW 13 G 29 MPH 9900 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Sat May 17 2025 45F 36F / 56% SSW 14 G 30 MPH 10100 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Sat May 17 2025 46F 37F / 52% SSW 17 G 35 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Sat May 17 2025 43F 36F / 51% SSW 16 G 34 MPH 10400 FT 0:1 / -% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Sat May 17 2025 40F 33F / 84% W 10 G 19 MPH 10200 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Sat May 17 2025 37F 31F / 100% WSW 10 G 22 MPH 10100 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Sat May 17 2025 36F 32F / 71% S 13 G 27 MPH 10100 FT 6:1 / 17% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Sat May 17 2025 35F 30F / 84% SSE 12 G 26 MPH 10200 FT 4:1 / 25% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Sat May 17 2025 34F 29F / 87% SSW 13 G 27 MPH 10100 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Sun May 18 2025 34F 28F / 96% S 14 G 31 MPH 9900 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Sun May 18 2025 32F 27F / 100% SSW 10 G 22 MPH 10000 FT 5:1 / 20% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Sun May 18 2025 32F 27F / 95% SSE 11 G 21 MPH 9900 FT 6:1 / 17% 0.06" / 0.4" 0.06" / 0.4" 15 03 AM Sun May 18 2025 32F 27F / 95% S 11 G 22 MPH 9700 FT 8:1 / 12% 0.00" / 0.0" 0.06" / 0.4" 16 04 AM Sun May 18 2025 32F 26F / 100% W 7 G 12 MPH 8900 FT 10:1 / 10% 0.06" / 0.6" 0.12" / 1.0" 17 05 AM Sun May 18 2025 32F 26F / 98% S 16 G 30 MPH 8600 FT 7:1 / 14% 0.19" / 1.3" 0.31" / 2.3" 18 06 AM Sun May 18 2025 30F 25F / 100% S 12 G 23 MPH 8800 FT 8:1 / 12% 0.08" / 0.6" 0.39" / 2.9" 19 07 AM Sun May 18 2025 30F 24F / 100% WSW 8 G 13 MPH 8400 FT 10:1 / 10% 0.10" / 1.0" 0.49" / 3.9" 20 08 AM Sun May 18 2025 30F 24F / 100% WNW 14 G 24 MPH 8200 FT 9:1 / 11% 0.02" / 0.2" 0.51" / 4.1" 21 09 AM Sun May 18 2025 29F 22F / 100% NW 22 G 35 MPH 8200 FT 8:1 / 12% 0.03" / 0.2" 0.54" / 4.3" 22 10 AM Sun May 18 2025 29F 22F / 100% NW 22 G 36 MPH 8100 FT 8:1 / 12% 0.07" / 0.6" 0.61" / 4.9" 23 11 AM Sun May 18 2025 29F 22F / 100% WNW 20 G 34 MPH 8200 FT 8:1 / 12% 0.09" / 0.7" 0.70" / 5.6" 24 12 PM Sun May 18 2025 31F 24F / 96% WNW 21 G 33 MPH 8000 FT 8:1 / 12% 0.09" / 0.7" 0.79" / 6.3" 25 01 PM Sun May 18 2025 30F 23F / 97% WNW 23 G 35 MPH 8000 FT 8:1 / 12% 0.05" / 0.4" 0.84" / 6.7" 26 02 PM Sun May 18 2025 31F 24F / 97% WNW 22 G 35 MPH 7700 FT 9:1 / 11% 0.05" / 0.4" 0.89" / 7.1" 27 03 PM Sun May 18 2025 32F 24F / 100% WNW 23 G 38 MPH 7700 FT 9:1 / 11% 0.09" / 0.8" 0.98" / 7.9" 28 04 PM Sun May 18 2025 29F 22F / 93% WNW 20 G 32 MPH 7500 FT 8:1 / 12% 0.05" / 0.4" 1.03" / 8.3" 29 05 PM Sun May 18 2025 29F 21F / 96% WNW 19 G 32 MPH 7700 FT 8:1 / 12% 0.00" / 0.0" 1.03" / 8.3" 30 06 PM Sun May 18 2025 28F 21F / 87% WNW 21 G 33 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 1.03" / 8.3" 31 07 PM Sun May 18 2025 28F 20F / 87% WNW 21 G 35 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 1.03" / 8.3" 32 08 PM Sun May 18 2025 26F 19F / 96% WNW 23 G 39 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 1.03" / 8.3" 33 09 PM Sun May 18 2025 25F 18F / 91% WNW 25 G 41 MPH 7800 FT 8:1 / 12% 0.00" / 0.0" 1.03" / 8.3" 34 10 PM Sun May 18 2025 25F 19F / 90% WNW 26 G 40 MPH 6000 FT 8:1 / 12% 0.00" / 0.0" 1.03" / 8.3" 35 11 PM Sun May 18 2025 22F 16F / 94% WNW 25 G 39 MPH 5800 FT 10:1 / 10% 0.07" / 0.7" 1.10" / 9.0" 36 12 AM Mon May 19 2025 22F 15F / 94% WNW 26 G 41 MPH 5700 FT 9:1 / 11% 0.00" / 0.0" 1.10" / 9.0" 37 01 AM Mon May 19 2025 21F 16F / 93% WNW 25 G 38 MPH 5500 FT 10:1 / 10% 0.00" / 0.0" 1.10" / 9.0" 38 02 AM Mon May 19 2025 20F 15F / 87% WNW 25 G 37 MPH 5300 FT 15:1 / 7% 0.00" / 0.0" 1.10" / 9.0" 39 03 AM Mon May 19 2025 18F 13F / 92% WNW 23 G 36 MPH 5200 FT 18:1 / 6% 0.00" / 0.0" 1.10" / 9.0" 40 04 AM Mon May 19 2025 18F 13F / 95% WNW 23 G 35 MPH 5100 FT 16:1 / 6% 0.00" / 0.0" 1.10" / 9.0" 41 05 AM Mon May 19 2025 18F 13F / 91% WNW 23 G 33 MPH 4900 FT 16:1 / 6% 0.00" / 0.0" 1.10" / 9.0" 42 06 AM Mon May 19 2025 16F 12F / 93% W 21 G 31 MPH 5200 FT 13:1 / 8% 0.01" / 0.1" 1.11" / 9.1" 43 07 AM Mon May 19 2025 18F 12F / 89% W 19 G 29 MPH 5000 FT 14:1 / 7% 0.01" / 0.1" 1.12" / 9.2" 44 08 AM Mon May 19 2025 17F 12F / 96% WNW 14 G 21 MPH 5000 FT 19:1 / 5% 0.00" / 0.0" 1.12" / 9.2" 45 09 AM Mon May 19 2025 18F 13F / 99% NW 12 G 21 MPH 4900 FT 18:1 / 6% 0.00" / 0.0" 1.12" / 9.2" 46 10 AM Mon May 19 2025 19F 14F / 92% NW 12 G 21 MPH 5300 FT 20:1 / 5% 0.02" / 0.4" 1.14" / 9.6" 47 11 AM Mon May 19 2025 21F 16F / 94% NNW 13 G 22 MPH 5400 FT 19:1 / 5% 0.00" / 0.0" 1.14" / 9.6" 48 12 PM Mon May 19 2025 24F 17F / 89% N 9 G 18 MPH 5500 FT 17:1 / 6% 0.00" / 0.0" 1.14" / 9.6"