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 00Z 18-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 PM Mon Mar 17 2025 34F 25F / 71% S 21 G 45 MPH 7600 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Mon Mar 17 2025 30F 23F / 66% S 24 G 51 MPH 7700 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 2 08 PM Mon Mar 17 2025 29F 23F / 66% SSW 26 G 52 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 3 09 PM Mon Mar 17 2025 29F 22F / 69% SSW 27 G 54 MPH 7700 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 4 10 PM Mon Mar 17 2025 28F 20F / 75% SSW 25 G 53 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 5 11 PM Mon Mar 17 2025 28F 19F / 79% SSW 26 G 59 MPH 7000 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 6 12 AM Tue Mar 18 2025 26F 17F / 99% SW 27 G 56 MPH 6200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 7 01 AM Tue Mar 18 2025 21F 14F / 100% W 19 G 36 MPH 4800 FT 10:1 / 10% 0.21" / 2.1" 0.21" / 2.1" 8 02 AM Tue Mar 18 2025 19F 11F / 94% WNW 28 G 41 MPH 4700 FT 17:1 / 6% 0.15" / 2.6" 0.36" / 4.7" 9 03 AM Tue Mar 18 2025 17F 10F / 97% NW 28 G 45 MPH 4700 FT 14:1 / 7% 0.06" / 0.8" 0.42" / 5.5" 10 04 AM Tue Mar 18 2025 17F 10F / 97% WNW 22 G 36 MPH 4700 FT 13:1 / 8% 0.05" / 0.6" 0.47" / 6.1" 11 05 AM Tue Mar 18 2025 16F 9F / 97% WNW 24 G 37 MPH 4500 FT 15:1 / 7% 0.03" / 0.4" 0.50" / 6.5" 12 06 AM Tue Mar 18 2025 15F 8F / 93% NW 26 G 41 MPH 4300 FT 14:1 / 7% 0.05" / 0.7" 0.55" / 7.2" 13 07 AM Tue Mar 18 2025 14F 8F / 93% WNW 27 G 43 MPH 4500 FT 14:1 / 7% 0.07" / 1.0" 0.62" / 8.2" 14 08 AM Tue Mar 18 2025 13F 6F / 95% NW 32 G 49 MPH ≤ KSLC 12:1 / 8% 0.06" / 0.7" 0.68" / 8.9" 15 09 AM Tue Mar 18 2025 12F 5F / 90% WNW 34 G 52 MPH ≤ KSLC 14:1 / 7% 0.02" / 0.3" 0.70" / 9.2" 16 10 AM Tue Mar 18 2025 10F 4F / 90% WNW 30 G 46 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 0.75" / 9.8" 17 11 AM Tue Mar 18 2025 12F 4F / 88% WNW 29 G 45 MPH ≤ KSLC 13:1 / 8% 0.04" / 0.5" 0.79" / 10.3" 18 12 PM Tue Mar 18 2025 13F 4F / 90% WNW 29 G 46 MPH ≤ KSLC 14:1 / 7% 0.05" / 0.7" 0.84" / 11.0" 19 01 PM Tue Mar 18 2025 15F 4F / 90% WNW 30 G 44 MPH ≤ KSLC 12:1 / 8% 0.03" / 0.4" 0.87" / 11.4" 20 02 PM Tue Mar 18 2025 15F 4F / 92% WNW 28 G 41 MPH ≤ KSLC 13:1 / 8% 0.02" / 0.3" 0.89" / 11.7" 21 03 PM Tue Mar 18 2025 18F 7F / 96% WNW 27 G 41 MPH ≤ KSLC 13:1 / 8% 0.05" / 0.6" 0.94" / 12.3" 22 04 PM Tue Mar 18 2025 16F 5F / 96% WNW 28 G 42 MPH ≤ KSLC 13:1 / 8% 0.04" / 0.5" 0.98" / 12.8" 23 05 PM Tue Mar 18 2025 16F 5F / 97% WNW 27 G 40 MPH ≤ KSLC 15:1 / 7% 0.05" / 0.8" 1.03" / 13.6" 24 06 PM Tue Mar 18 2025 14F 5F / 97% WNW 30 G 46 MPH ≤ KSLC 13:1 / 8% 0.15" / 2.0" 1.18" / 15.6" 25 07 PM Tue Mar 18 2025 12F 4F / 100% WNW 28 G 43 MPH ≤ KSLC 13:1 / 8% 0.08" / 1.0" 1.26" / 16.6" 26 08 PM Tue Mar 18 2025 9F 2F / 93% WNW 26 G 42 MPH ≤ KSLC 13:1 / 8% 0.07" / 0.9" 1.33" / 17.5" 27 09 PM Tue Mar 18 2025 8F 3F / 90% WNW 28 G 43 MPH ≤ KSLC 14:1 / 7% 0.06" / 0.8" 1.39" / 18.3" 28 10 PM Tue Mar 18 2025 9F 2F / 90% NW 25 G 40 MPH ≤ KSLC 13:1 / 8% 0.06" / 0.8" 1.45" / 19.1" 29 11 PM Tue Mar 18 2025 7F 2F / 90% NW 21 G 34 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.45" / 19.1" 30 12 AM Wed Mar 19 2025 6F 1F / 95% WNW 22 G 35 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.45" / 19.1" 31 01 AM Wed Mar 19 2025 6F 1F / 95% NW 21 G 32 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.45" / 19.1" 32 02 AM Wed Mar 19 2025 6F 1F / 97% NW 20 G 30 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 33 03 AM Wed Mar 19 2025 5F 1F / 89% NW 20 G 29 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 34 04 AM Wed Mar 19 2025 4F 1F / 87% NW 20 G 30 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 35 05 AM Wed Mar 19 2025 3F 0F / 90% NW 18 G 25 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 1.45" / 19.1" 36 06 AM Wed Mar 19 2025 3F 0F / 92% NW 17 G 22 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 1.45" / 19.1" 37 07 AM Wed Mar 19 2025 3F 2F / 92% NW 15 G 22 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.45" / 19.1" 38 08 AM Wed Mar 19 2025 4F 3F / 80% NW 18 G 22 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.45" / 19.1" 39 09 AM Wed Mar 19 2025 4F 3F / 73% NW 18 G 23 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 40 10 AM Wed Mar 19 2025 10F 7F / 63% NW 17 G 21 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 41 11 AM Wed Mar 19 2025 13F 9F / 67% NW 17 G 20 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 42 12 PM Wed Mar 19 2025 15F 10F / 70% NW 16 G 20 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 43 01 PM Wed Mar 19 2025 19F 11F / 72% WNW 16 G 18 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 44 02 PM Wed Mar 19 2025 20F 12F / 96% NW 14 G 19 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.45" / 19.1" 45 03 PM Wed Mar 19 2025 22F 14F / 90% WNW 13 G 17 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.45" / 19.1" 46 04 PM Wed Mar 19 2025 20F 15F / 68% WNW 13 G 18 MPH 4300 FT 14:1 / 7% 0.00" / 0.0" 1.45" / 19.1" 47 05 PM Wed Mar 19 2025 20F 16F / 53% W 15 G 21 MPH 4500 FT 14:1 / 7% 0.00" / 0.0" 1.45" / 19.1" 48 06 PM Wed Mar 19 2025 21F 17F / 50% W 15 G 23 MPH 4500 FT 13:1 / 8% 0.00" / 0.0" 1.45" / 19.1"