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-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 12 PM Mon Mar 17 2025 31F 23F / 64% S 19 G 37 MPH 7100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Mon Mar 17 2025 32F 24F / 59% S 20 G 40 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Mon Mar 17 2025 33F 24F / 65% S 18 G 38 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Mon Mar 17 2025 35F 25F / 68% SSW 16 G 34 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Mon Mar 17 2025 35F 25F / 64% S 16 G 35 MPH 7700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Mon Mar 17 2025 35F 26F / 68% S 20 G 42 MPH 8000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Mon Mar 17 2025 34F 25F / 61% S 21 G 46 MPH 8000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Mon Mar 17 2025 31F 24F / 66% SSW 25 G 51 MPH 8200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Mon Mar 17 2025 30F 23F / 72% SSW 25 G 51 MPH 8100 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Mon Mar 17 2025 29F 22F / 70% SSW 26 G 55 MPH 7900 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Mon Mar 17 2025 29F 21F / 71% SSW 30 G 61 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Mon Mar 17 2025 29F 20F / 74% SSW 31 G 64 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Tue Mar 18 2025 27F 18F / 93% SW 29 G 63 MPH 7500 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Tue Mar 18 2025 26F 18F / 97% SW 25 G 48 MPH 5000 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Tue Mar 18 2025 22F 15F / 96% SW 26 G 48 MPH 4800 FT 11:1 / 9% 0.06" / 0.7" 0.06" / 0.7" 15 03 AM Tue Mar 18 2025 19F 12F / 93% SW 17 G 34 MPH 4700 FT 15:1 / 7% 0.01" / 0.2" 0.07" / 0.9" 16 04 AM Tue Mar 18 2025 17F 11F / 93% WNW 20 G 30 MPH 4700 FT 17:1 / 6% 0.03" / 0.5" 0.10" / 1.4" 17 05 AM Tue Mar 18 2025 16F 9F / 99% NW 19 G 27 MPH 4600 FT 17:1 / 6% 0.03" / 0.5" 0.13" / 1.9" 18 06 AM Tue Mar 18 2025 15F 8F / 95% NW 27 G 40 MPH 4500 FT 13:1 / 8% 0.10" / 1.3" 0.23" / 3.2" 19 07 AM Tue Mar 18 2025 14F 7F / 92% NW 29 G 47 MPH 4400 FT 13:1 / 8% 0.09" / 1.2" 0.32" / 4.4" 20 08 AM Tue Mar 18 2025 12F 6F / 88% NW 31 G 48 MPH ≤ KSLC 13:1 / 8% 0.06" / 0.8" 0.38" / 5.2" 21 09 AM Tue Mar 18 2025 12F 5F / 91% WNW 31 G 48 MPH ≤ KSLC 13:1 / 8% 0.02" / 0.3" 0.40" / 5.5" 22 10 AM Tue Mar 18 2025 11F 4F / 86% WNW 31 G 47 MPH ≤ KSLC 13:1 / 8% 0.02" / 0.3" 0.42" / 5.8" 23 11 AM Tue Mar 18 2025 11F 3F / 89% WNW 30 G 48 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 0.47" / 6.4" 24 12 PM Tue Mar 18 2025 13F 4F / 95% WNW 30 G 46 MPH ≤ KSLC 12:1 / 8% 0.05" / 0.6" 0.52" / 7.0" 25 01 PM Tue Mar 18 2025 16F 5F / 93% WNW 25 G 39 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 0.57" / 7.6" 26 02 PM Tue Mar 18 2025 16F 5F / 93% WNW 27 G 42 MPH ≤ KSLC 13:1 / 8% 0.10" / 1.3" 0.67" / 8.9" 27 03 PM Tue Mar 18 2025 16F 5F / 94% WNW 29 G 44 MPH ≤ KSLC 12:1 / 8% 0.05" / 0.6" 0.72" / 9.5" 28 04 PM Tue Mar 18 2025 15F 4F / 95% WNW 29 G 43 MPH ≤ KSLC 12:1 / 8% 0.07" / 0.8" 0.79" / 10.3" 29 05 PM Tue Mar 18 2025 14F 4F / 95% WNW 32 G 49 MPH ≤ KSLC 11:1 / 9% 0.10" / 1.1" 0.89" / 11.4" 30 06 PM Tue Mar 18 2025 12F 3F / 93% WNW 31 G 47 MPH ≤ KSLC 12:1 / 8% 0.08" / 1.0" 0.97" / 12.4" 31 07 PM Tue Mar 18 2025 9F 2F / 97% WNW 30 G 46 MPH ≤ KSLC 12:1 / 8% 0.09" / 1.1" 1.06" / 13.5" 32 08 PM Tue Mar 18 2025 8F 1F / 94% WNW 31 G 45 MPH ≤ KSLC 12:1 / 8% 0.03" / 0.4" 1.09" / 13.9" 33 09 PM Tue Mar 18 2025 7F 0F / 95% WNW 28 G 44 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 1.09" / 13.9" 34 10 PM Tue Mar 18 2025 6F 0F / 91% NW 27 G 42 MPH ≤ KSLC 13:1 / 8% 0.02" / 0.3" 1.11" / 14.2" 35 11 PM Tue Mar 18 2025 6F 0F / 94% NW 24 G 37 MPH ≤ KSLC 16:1 / 6% 0.01" / 0.2" 1.12" / 14.4" 36 12 AM Wed Mar 19 2025 5F 0F / 99% NW 21 G 32 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.12" / 14.4" 37 01 AM Wed Mar 19 2025 6F 1F / 90% NW 20 G 28 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.12" / 14.4" 38 02 AM Wed Mar 19 2025 6F 1F / 91% NW 19 G 29 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.12" / 14.4" 39 03 AM Wed Mar 19 2025 4F 1F / 90% NW 19 G 29 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.12" / 14.4" 40 04 AM Wed Mar 19 2025 3F 1F / 93% NW 18 G 27 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 1.12" / 14.4" 41 05 AM Wed Mar 19 2025 3F 0F / 88% NW 17 G 24 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 1.12" / 14.4" 42 06 AM Wed Mar 19 2025 3F 1F / 90% NW 16 G 21 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.12" / 14.4" 43 07 AM Wed Mar 19 2025 4F 2F / 72% NW 18 G 25 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.12" / 14.4" 44 08 AM Wed Mar 19 2025 4F 3F / 63% WNW 20 G 29 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.12" / 14.4" 45 09 AM Wed Mar 19 2025 6F 5F / 55% NW 22 G 29 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.12" / 14.4" 46 10 AM Wed Mar 19 2025 9F 7F / 55% NW 21 G 26 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.12" / 14.4" 47 11 AM Wed Mar 19 2025 13F 10F / 57% NW 19 G 25 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 1.12" / 14.4" 48 12 PM Wed Mar 19 2025 17F 11F / 64% WNW 16 G 21 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.12" / 14.4"