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 12-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 06 AM Wed Mar 12 2025 22F 21F / 49% S 16 G 26 MPH 6000 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Wed Mar 12 2025 21F 19F / 61% SSE 13 G 22 MPH 6200 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Wed Mar 12 2025 20F 18F / 70% SSE 14 G 24 MPH 6200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Wed Mar 12 2025 22F 19F / 75% S 17 G 30 MPH 6300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Wed Mar 12 2025 25F 21F / 75% S 17 G 35 MPH 6600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Wed Mar 12 2025 27F 22F / 73% SSE 17 G 33 MPH 6600 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Wed Mar 12 2025 29F 23F / 68% S 19 G 37 MPH 6800 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Wed Mar 12 2025 29F 23F / 69% S 21 G 38 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Wed Mar 12 2025 30F 24F / 72% S 18 G 40 MPH 7400 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Wed Mar 12 2025 30F 24F / 78% S 19 G 42 MPH 7600 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Wed Mar 12 2025 31F 23F / 82% S 18 G 43 MPH 7700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Wed Mar 12 2025 32F 24F / 79% S 19 G 46 MPH 7800 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Wed Mar 12 2025 31F 24F / 75% S 21 G 46 MPH 8100 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Wed Mar 12 2025 28F 23F / 77% S 23 G 51 MPH 7800 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Wed Mar 12 2025 27F 22F / 76% S 26 G 53 MPH 7500 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Wed Mar 12 2025 27F 20F / 84% S 28 G 55 MPH 7400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Wed Mar 12 2025 26F 20F / 90% SSW 28 G 57 MPH 7400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Wed Mar 12 2025 27F 20F / 91% S 27 G 59 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Thu Mar 13 2025 28F 20F / 96% SSW 26 G 56 MPH 7400 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Thu Mar 13 2025 28F 19F / 100% SSW 27 G 53 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Thu Mar 13 2025 27F 18F / 95% S 25 G 54 MPH 7300 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Thu Mar 13 2025 27F 19F / 97% S 29 G 58 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 22 04 AM Thu Mar 13 2025 27F 19F / 100% S 26 G 54 MPH 7400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 23 05 AM Thu Mar 13 2025 26F 19F / 100% S 19 G 41 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 24 06 AM Thu Mar 13 2025 27F 19F / 96% S 25 G 52 MPH 7100 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 25 07 AM Thu Mar 13 2025 26F 19F / 98% S 21 G 46 MPH 7100 FT 8:1 / 12% 0.01" / 0.1" 0.01" / 0.1" 26 08 AM Thu Mar 13 2025 26F 18F / 99% S 19 G 42 MPH 7100 FT 9:1 / 11% 0.05" / 0.4" 0.06" / 0.5" 27 09 AM Thu Mar 13 2025 27F 20F / 96% S 18 G 39 MPH 7100 FT 9:1 / 11% 0.10" / 0.9" 0.16" / 1.4" 28 10 AM Thu Mar 13 2025 27F 19F / 97% S 17 G 37 MPH 6900 FT 11:1 / 9% 0.18" / 2.0" 0.34" / 3.4" 29 11 AM Thu Mar 13 2025 27F 18F / 99% S 20 G 46 MPH 6900 FT 8:1 / 12% 0.09" / 0.7" 0.43" / 4.1" 30 12 PM Thu Mar 13 2025 27F 18F / 95% S 18 G 40 MPH 7100 FT 10:1 / 10% 0.01" / 0.1" 0.44" / 4.2" 31 01 PM Thu Mar 13 2025 28F 19F / 95% S 18 G 42 MPH 7200 FT 9:1 / 11% 0.00" / 0.0" 0.44" / 4.2" 32 02 PM Thu Mar 13 2025 28F 20F / 93% S 16 G 38 MPH 7000 FT 10:1 / 10% 0.03" / 0.3" 0.47" / 4.5" 33 03 PM Thu Mar 13 2025 29F 20F / 93% SSW 18 G 42 MPH 7300 FT 10:1 / 10% 0.07" / 0.7" 0.54" / 5.2" 34 04 PM Thu Mar 13 2025 29F 20F / 97% S 17 G 38 MPH 7200 FT 10:1 / 10% 0.08" / 0.8" 0.62" / 6.0" 35 05 PM Thu Mar 13 2025 29F 19F / 100% SSW 18 G 36 MPH 7300 FT 10:1 / 10% 0.11" / 1.1" 0.73" / 7.1" 36 06 PM Thu Mar 13 2025 26F 17F / 90% SSW 19 G 44 MPH 5400 FT 10:1 / 10% 0.15" / 1.5" 0.88" / 8.6" 37 07 PM Thu Mar 13 2025 21F 13F / 93% W 22 G 40 MPH 4700 FT 14:1 / 7% 0.07" / 1.0" 0.95" / 9.6" 38 08 PM Thu Mar 13 2025 19F 12F / 91% WNW 16 G 30 MPH 4300 FT 17:1 / 6% 0.18" / 3.1" 1.13" / 12.7" 39 09 PM Thu Mar 13 2025 18F 11F / 94% WNW 15 G 28 MPH 4500 FT 16:1 / 6% 0.06" / 1.0" 1.19" / 13.7" 40 10 PM Thu Mar 13 2025 16F 10F / 96% WNW 14 G 26 MPH 4300 FT 17:1 / 6% 0.05" / 0.8" 1.24" / 14.5" 41 11 PM Thu Mar 13 2025 15F 9F / 97% WNW 18 G 28 MPH 4300 FT 16:1 / 6% 0.03" / 0.5" 1.27" / 15.0" 42 12 AM Fri Mar 14 2025 15F 8F / 96% WNW 20 G 31 MPH ≤ KSLC 16:1 / 6% 0.03" / 0.5" 1.30" / 15.5" 43 01 AM Fri Mar 14 2025 13F 7F / 94% WNW 22 G 32 MPH 4400 FT 15:1 / 7% 0.02" / 0.3" 1.32" / 15.8" 44 02 AM Fri Mar 14 2025 13F 7F / 93% WNW 23 G 34 MPH 4500 FT 16:1 / 6% 0.01" / 0.2" 1.33" / 16.0" 45 03 AM Fri Mar 14 2025 14F 7F / 91% WNW 21 G 32 MPH 4500 FT 16:1 / 6% 0.02" / 0.3" 1.35" / 16.3" 46 04 AM Fri Mar 14 2025 12F 6F / 92% WNW 25 G 39 MPH ≤ KSLC 14:1 / 7% 0.12" / 1.7" 1.47" / 18.0" 47 05 AM Fri Mar 14 2025 12F 5F / 90% WNW 24 G 36 MPH ≤ KSLC 15:1 / 7% 0.10" / 1.5" 1.57" / 19.5" 48 06 AM Fri Mar 14 2025 12F 5F / 83% WNW 24 G 36 MPH ≤ KSLC 17:1 / 6% 0.06" / 1.0" 1.63" / 20.5"