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 06Z 15-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 AM Sat Mar 15 2025 12F 4F / 96% WSW 20 G 33 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Sat Mar 15 2025 11F 5F / 94% WSW 16 G 25 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Sat Mar 15 2025 12F 5F / 91% W 19 G 31 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Sat Mar 15 2025 12F 5F / 88% W 20 G 31 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Sat Mar 15 2025 12F 5F / 92% W 21 G 32 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Sat Mar 15 2025 12F 5F / 92% W 21 G 31 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Sat Mar 15 2025 11F 4F / 92% WNW 19 G 29 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Sat Mar 15 2025 11F 4F / 92% WNW 19 G 30 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Sat Mar 15 2025 11F 4F / 92% WNW 21 G 31 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Sat Mar 15 2025 11F 4F / 89% WNW 20 G 31 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Sat Mar 15 2025 13F 5F / 96% WNW 19 G 29 MPH ≤ KSLC 18:1 / 6% 0.03" / 0.5" 0.03" / 0.5" 11 11 AM Sat Mar 15 2025 14F 5F / 93% WNW 19 G 30 MPH 4300 FT 18:1 / 6% 0.01" / 0.2" 0.04" / 0.7" 12 12 PM Sat Mar 15 2025 15F 6F / 96% W 19 G 30 MPH 4400 FT 18:1 / 6% 0.03" / 0.5" 0.07" / 1.2" 13 01 PM Sat Mar 15 2025 17F 8F / 93% W 19 G 31 MPH 4400 FT 18:1 / 6% 0.02" / 0.4" 0.09" / 1.6" 14 02 PM Sat Mar 15 2025 19F 9F / 92% W 20 G 34 MPH 4500 FT 17:1 / 6% 0.07" / 1.2" 0.16" / 2.8" 15 03 PM Sat Mar 15 2025 19F 9F / 91% W 22 G 33 MPH 4500 FT 17:1 / 6% 0.04" / 0.7" 0.20" / 3.5" 16 04 PM Sat Mar 15 2025 19F 7F / 93% W 22 G 36 MPH 4500 FT 18:1 / 6% 0.04" / 0.7" 0.24" / 4.2" 17 05 PM Sat Mar 15 2025 19F 9F / 98% W 20 G 31 MPH 4700 FT 18:1 / 6% 0.04" / 0.7" 0.28" / 4.9" 18 06 PM Sat Mar 15 2025 16F 7F / 96% W 23 G 36 MPH 4700 FT 18:1 / 6% 0.07" / 1.3" 0.35" / 6.2" 19 07 PM Sat Mar 15 2025 14F 6F / 100% W 27 G 43 MPH 4800 FT 14:1 / 7% 0.04" / 0.6" 0.39" / 6.8" 20 08 PM Sat Mar 15 2025 14F 6F / 98% W 28 G 45 MPH 4700 FT 15:1 / 7% 0.00" / 0.0" 0.39" / 6.8" 21 09 PM Sat Mar 15 2025 13F 5F / 97% WNW 30 G 46 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.39" / 6.8" 22 10 PM Sat Mar 15 2025 12F 6F / 97% W 28 G 43 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.39" / 6.8" 23 11 PM Sat Mar 15 2025 13F 7F / 97% W 28 G 43 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.39" / 6.8" 24 12 AM Sun Mar 16 2025 14F 8F / 95% W 29 G 43 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.39" / 6.8" 25 01 AM Sun Mar 16 2025 14F 9F / 94% W 29 G 43 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.39" / 6.8" 26 02 AM Sun Mar 16 2025 15F 10F / 97% W 29 G 47 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.39" / 6.8" 27 03 AM Sun Mar 16 2025 17F 11F / 100% W 29 G 46 MPH ≤ KSLC 11:1 / 9% 0.03" / 0.3" 0.42" / 7.1" 28 04 AM Sun Mar 16 2025 18F 13F / 99% W 29 G 46 MPH ≤ KSLC 10:1 / 10% 0.04" / 0.4" 0.46" / 7.5" 29 05 AM Sun Mar 16 2025 19F 13F / 98% W 27 G 45 MPH 4300 FT 10:1 / 10% 0.06" / 0.6" 0.52" / 8.1" 30 06 AM Sun Mar 16 2025 19F 13F / 96% WSW 27 G 43 MPH 4500 FT 11:1 / 9% 0.03" / 0.3" 0.55" / 8.4" 31 07 AM Sun Mar 16 2025 19F 14F / 91% W 27 G 41 MPH 4500 FT 9:1 / 11% 0.00" / 0.0" 0.55" / 8.4" 32 08 AM Sun Mar 16 2025 19F 14F / 89% W 27 G 40 MPH 4800 FT 10:1 / 10% 0.00" / 0.0" 0.55" / 8.4" 33 09 AM Sun Mar 16 2025 20F 15F / 91% W 23 G 36 MPH 4800 FT 9:1 / 11% 0.00" / 0.0" 0.55" / 8.4" 34 10 AM Sun Mar 16 2025 21F 16F / 92% WSW 22 G 37 MPH 5100 FT 10:1 / 10% 0.01" / 0.1" 0.56" / 8.5" 35 11 AM Sun Mar 16 2025 22F 17F / 79% WSW 24 G 39 MPH 5200 FT 10:1 / 10% 0.02" / 0.2" 0.58" / 8.7" 36 12 PM Sun Mar 16 2025 27F 19F / 64% SW 23 G 39 MPH 5700 FT 9:1 / 11% 0.00" / 0.0" 0.58" / 8.7" 37 01 PM Sun Mar 16 2025 28F 20F / 61% SW 25 G 43 MPH 6300 FT 10:1 / 10% 0.00" / 0.0" 0.58" / 8.7" 38 02 PM Sun Mar 16 2025 30F 21F / 60% SW 24 G 45 MPH 6700 FT 9:1 / 11% 0.00" / 0.0" 0.58" / 8.7" 39 03 PM Sun Mar 16 2025 33F 24F / 56% SSW 21 G 41 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.58" / 8.7" 40 04 PM Sun Mar 16 2025 34F 25F / 53% SW 21 G 41 MPH 7500 FT 12:1 / 8% 0.00" / 0.0" 0.58" / 8.7" 41 05 PM Sun Mar 16 2025 36F 27F / 50% SW 23 G 42 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.58" / 8.7" 42 06 PM Sun Mar 16 2025 33F 27F / 43% SW 26 G 46 MPH 7500 FT 8:1 / 12% 0.00" / 0.0" 0.58" / 8.7" 43 07 PM Sun Mar 16 2025 30F 26F / 47% SW 29 G 53 MPH 7800 FT 9:1 / 11% 0.00" / 0.0" 0.58" / 8.7" 44 08 PM Sun Mar 16 2025 29F 25F / 49% SW 29 G 51 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.58" / 8.7" 45 09 PM Sun Mar 16 2025 28F 24F / 55% SW 29 G 51 MPH 7900 FT 9:1 / 11% 0.00" / 0.0" 0.58" / 8.7" 46 10 PM Sun Mar 16 2025 27F 23F / 56% SW 30 G 52 MPH 7700 FT 9:1 / 11% 0.00" / 0.0" 0.58" / 8.7" 47 11 PM Sun Mar 16 2025 26F 22F / 56% SW 29 G 52 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.58" / 8.7" 48 12 AM Mon Mar 17 2025 25F 22F / 57% SW 31 G 54 MPH 7300 FT 10:1 / 10% 0.00" / 0.0" 0.58" / 8.7"