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 17-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 Mon Mar 17 2025 25F 21F / 60% SSW 28 G 49 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Mon Mar 17 2025 24F 21F / 67% SSW 27 G 47 MPH 7000 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Mon Mar 17 2025 23F 21F / 62% SW 25 G 41 MPH 6900 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Mon Mar 17 2025 24F 21F / 59% SW 22 G 37 MPH 6900 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Mon Mar 17 2025 26F 22F / 58% SW 20 G 36 MPH 6800 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 5 11 AM Mon Mar 17 2025 28F 22F / 65% SSW 19 G 34 MPH 6900 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 6 12 PM Mon Mar 17 2025 31F 22F / 63% SSW 20 G 38 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 7 01 PM Mon Mar 17 2025 32F 23F / 65% SSW 20 G 39 MPH 7400 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 8 02 PM Mon Mar 17 2025 33F 24F / 68% SSW 17 G 37 MPH 7600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 9 03 PM Mon Mar 17 2025 34F 24F / 62% S 17 G 38 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 10 04 PM Mon Mar 17 2025 34F 25F / 59% S 18 G 40 MPH 7700 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 11 05 PM Mon Mar 17 2025 35F 26F / 61% S 20 G 45 MPH 8000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 12 06 PM Mon Mar 17 2025 33F 25F / 62% S 22 G 48 MPH 8200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 13 07 PM Mon Mar 17 2025 31F 24F / 62% SSW 24 G 51 MPH 8000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 14 08 PM Mon Mar 17 2025 29F 23F / 66% SSW 26 G 53 MPH 7900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 15 09 PM Mon Mar 17 2025 29F 22F / 68% SSW 28 G 56 MPH 7800 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 10 PM Mon Mar 17 2025 28F 21F / 71% SSW 29 G 61 MPH 7500 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 17 11 PM Mon Mar 17 2025 27F 19F / 75% SSW 29 G 62 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 18 12 AM Tue Mar 18 2025 27F 18F / 92% SSW 29 G 59 MPH 7100 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 19 01 AM Tue Mar 18 2025 25F 17F / 98% SSW 25 G 52 MPH 6600 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 20 02 AM Tue Mar 18 2025 24F 15F / 97% SSW 26 G 53 MPH 5000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 21 03 AM Tue Mar 18 2025 20F 13F / 96% SW 19 G 35 MPH 4800 FT 12:1 / 8% 0.01" / 0.1" 0.01" / 0.1" 22 04 AM Tue Mar 18 2025 18F 11F / 96% W 20 G 33 MPH 4700 FT 13:1 / 8% 0.09" / 1.2" 0.10" / 1.3" 23 05 AM Tue Mar 18 2025 17F 9F / 97% WNW 25 G 39 MPH 4600 FT 13:1 / 8% 0.13" / 1.7" 0.23" / 3.0" 24 06 AM Tue Mar 18 2025 16F 8F / 93% NW 30 G 47 MPH 4500 FT 13:1 / 8% 0.12" / 1.6" 0.35" / 4.6" 25 07 AM Tue Mar 18 2025 14F 7F / 93% NW 29 G 47 MPH ≤ KSLC 12:1 / 8% 0.10" / 1.2" 0.45" / 5.8" 26 08 AM Tue Mar 18 2025 13F 5F / 95% NW 35 G 51 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 0.50" / 6.4" 27 09 AM Tue Mar 18 2025 12F 5F / 94% NW 30 G 43 MPH ≤ KSLC 13:1 / 8% 0.03" / 0.4" 0.53" / 6.8" 28 10 AM Tue Mar 18 2025 11F 5F / 90% NW 29 G 44 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.53" / 6.8" 29 11 AM Tue Mar 18 2025 12F 5F / 87% WNW 27 G 43 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.53" / 6.8" 30 12 PM Tue Mar 18 2025 15F 5F / 86% WNW 27 G 42 MPH ≤ KSLC 14:1 / 7% 0.04" / 0.6" 0.57" / 7.4" 31 01 PM Tue Mar 18 2025 15F 5F / 90% WNW 27 G 41 MPH ≤ KSLC 12:1 / 8% 0.04" / 0.5" 0.61" / 7.9" 32 02 PM Tue Mar 18 2025 16F 6F / 96% WNW 28 G 43 MPH ≤ KSLC 12:1 / 8% 0.11" / 1.3" 0.72" / 9.2" 33 03 PM Tue Mar 18 2025 16F 6F / 94% WNW 29 G 44 MPH ≤ KSLC 12:1 / 8% 0.10" / 1.2" 0.82" / 10.4" 34 04 PM Tue Mar 18 2025 14F 4F / 91% WNW 26 G 39 MPH ≤ KSLC 13:1 / 8% 0.06" / 0.8" 0.88" / 11.2" 35 05 PM Tue Mar 18 2025 14F 4F / 95% WNW 28 G 46 MPH ≤ KSLC 13:1 / 8% 0.06" / 0.8" 0.94" / 12.0" 36 06 PM Tue Mar 18 2025 12F 4F / 92% WNW 26 G 40 MPH ≤ KSLC 14:1 / 7% 0.11" / 1.5" 1.05" / 13.5" 37 07 PM Tue Mar 18 2025 10F 3F / 95% WNW 31 G 49 MPH ≤ KSLC 12:1 / 8% 0.06" / 0.7" 1.11" / 14.2" 38 08 PM Tue Mar 18 2025 9F 2F / 89% WNW 29 G 46 MPH ≤ KSLC 12:1 / 8% 0.02" / 0.2" 1.13" / 14.4" 39 09 PM Tue Mar 18 2025 8F 2F / 91% WNW 27 G 43 MPH ≤ KSLC 14:1 / 7% 0.07" / 1.0" 1.20" / 15.4" 40 10 PM Tue Mar 18 2025 7F 1F / 89% NW 28 G 41 MPH ≤ KSLC 15:1 / 7% 0.05" / 0.8" 1.25" / 16.2" 41 11 PM Tue Mar 18 2025 6F 2F / 83% NW 27 G 41 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 1.25" / 16.2" 42 12 AM Wed Mar 19 2025 6F 2F / 95% NW 23 G 35 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.25" / 16.2" 43 01 AM Wed Mar 19 2025 5F 1F / 93% NW 20 G 31 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.25" / 16.2" 44 02 AM Wed Mar 19 2025 5F 2F / 89% NW 20 G 27 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.25" / 16.2" 45 03 AM Wed Mar 19 2025 4F 1F / 93% NW 20 G 29 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.25" / 16.2" 46 04 AM Wed Mar 19 2025 5F 2F / 99% NW 18 G 29 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.25" / 16.2" 47 05 AM Wed Mar 19 2025 4F 1F / 88% NW 17 G 25 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 1.25" / 16.2" 48 06 AM Wed Mar 19 2025 4F 2F / 95% ENE 16 G 20 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.25" / 16.2"