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 14-Feb-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 05 AM Fri Feb 14 2025 22F 16F / 96% WSW 29 G 49 MPH 6300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 1 06 AM Fri Feb 14 2025 22F 16F / 97% SW 22 G 38 MPH 6000 FT 11:1 / 9% 0.15" / 1.6" 0.15" / 1.6" 2 07 AM Fri Feb 14 2025 20F 14F / 97% W 23 G 37 MPH 6300 FT 10:1 / 10% 0.02" / 0.2" 0.17" / 1.8" 3 08 AM Fri Feb 14 2025 19F 14F / 89% W 25 G 38 MPH 6200 FT 11:1 / 9% 0.00" / 0.0" 0.17" / 1.8" 4 09 AM Fri Feb 14 2025 21F 13F / 97% W 22 G 35 MPH 6200 FT 14:1 / 7% 0.00" / 0.0" 0.17" / 1.8" 5 10 AM Fri Feb 14 2025 22F 14F / 98% W 20 G 30 MPH 6100 FT 14:1 / 7% 0.00" / 0.0" 0.17" / 1.8" 6 11 AM Fri Feb 14 2025 23F 14F / 97% W 18 G 29 MPH 6000 FT 13:1 / 8% 0.00" / 0.0" 0.17" / 1.8" 7 12 PM Fri Feb 14 2025 24F 15F / 96% W 17 G 27 MPH 6100 FT 14:1 / 7% 0.00" / 0.0" 0.17" / 1.8" 8 01 PM Fri Feb 14 2025 25F 16F / 93% W 17 G 28 MPH 6100 FT 13:1 / 8% 0.01" / 0.1" 0.18" / 1.9" 9 02 PM Fri Feb 14 2025 26F 16F / 94% W 17 G 27 MPH 6200 FT 16:1 / 6% 0.00" / 0.0" 0.18" / 1.9" 10 03 PM Fri Feb 14 2025 25F 16F / 93% W 18 G 28 MPH 6400 FT 15:1 / 7% 0.08" / 1.2" 0.26" / 3.1" 11 04 PM Fri Feb 14 2025 24F 16F / 95% WNW 16 G 26 MPH 6400 FT 15:1 / 7% 0.01" / 0.2" 0.27" / 3.3" 12 05 PM Fri Feb 14 2025 23F 14F / 95% W 17 G 25 MPH 6400 FT 16:1 / 6% 0.02" / 0.3" 0.29" / 3.6" 13 06 PM Fri Feb 14 2025 21F 13F / 100% W 20 G 31 MPH 6300 FT 15:1 / 7% 0.00" / 0.0" 0.29" / 3.6" 14 07 PM Fri Feb 14 2025 19F 12F / 94% W 20 G 31 MPH 6200 FT 16:1 / 6% 0.00" / 0.0" 0.29" / 3.6" 15 08 PM Fri Feb 14 2025 19F 12F / 94% WNW 20 G 30 MPH 6000 FT 16:1 / 6% 0.00" / 0.0" 0.29" / 3.6" 16 09 PM Fri Feb 14 2025 19F 12F / 96% W 22 G 36 MPH 5900 FT 13:1 / 8% 0.10" / 1.3" 0.39" / 4.9" 17 10 PM Fri Feb 14 2025 19F 12F / 96% WNW 24 G 38 MPH 5800 FT 14:1 / 7% 0.03" / 0.4" 0.42" / 5.3" 18 11 PM Fri Feb 14 2025 19F 12F / 93% WNW 22 G 34 MPH 5500 FT 13:1 / 8% 0.02" / 0.3" 0.44" / 5.6" 19 12 AM Sat Feb 15 2025 18F 12F / 93% WNW 21 G 32 MPH 5300 FT 12:1 / 8% 0.02" / 0.2" 0.46" / 5.8" 20 01 AM Sat Feb 15 2025 17F 12F / 95% WNW 20 G 32 MPH 4900 FT 13:1 / 8% 0.02" / 0.3" 0.48" / 6.1" 21 02 AM Sat Feb 15 2025 17F 11F / 96% WNW 18 G 28 MPH 5000 FT 14:1 / 7% 0.02" / 0.3" 0.50" / 6.4" 22 03 AM Sat Feb 15 2025 16F 11F / 96% WNW 22 G 34 MPH 4800 FT 14:1 / 7% 0.06" / 0.8" 0.56" / 7.2" 23 04 AM Sat Feb 15 2025 15F 10F / 94% W 19 G 30 MPH 4700 FT 13:1 / 8% 0.08" / 1.0" 0.64" / 8.2" 24 05 AM Sat Feb 15 2025 14F 9F / 94% WNW 21 G 32 MPH 4500 FT 13:1 / 8% 0.08" / 1.0" 0.72" / 9.2" 25 06 AM Sat Feb 15 2025 13F 8F / 96% WNW 22 G 34 MPH 4400 FT 13:1 / 8% 0.07" / 0.9" 0.79" / 10.1" 26 07 AM Sat Feb 15 2025 13F 7F / 94% NW 24 G 37 MPH 4300 FT 15:1 / 7% 0.05" / 0.8" 0.84" / 10.9" 27 08 AM Sat Feb 15 2025 12F 7F / 91% WNW 19 G 29 MPH ≤ KSLC 20:1 / 5% 0.07" / 1.4" 0.91" / 12.3" 28 09 AM Sat Feb 15 2025 12F 6F / 96% WNW 19 G 28 MPH ≤ KSLC 20:1 / 5% 0.06" / 1.2" 0.97" / 13.5" 29 10 AM Sat Feb 15 2025 13F 7F / 94% WNW 22 G 33 MPH ≤ KSLC 17:1 / 6% 0.02" / 0.3" 0.99" / 13.8" 30 11 AM Sat Feb 15 2025 14F 4F / 94% WNW 25 G 37 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.99" / 13.8" 31 12 PM Sat Feb 15 2025 15F 5F / 93% WNW 24 G 33 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.99" / 13.8" 32 01 PM Sat Feb 15 2025 16F 5F / 94% WNW 22 G 33 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.99" / 13.8" 33 02 PM Sat Feb 15 2025 15F 4F / 96% WNW 23 G 34 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.99" / 13.8" 34 03 PM Sat Feb 15 2025 13F 4F / 94% WNW 25 G 35 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.99" / 13.8" 35 04 PM Sat Feb 15 2025 13F 5F / 92% WNW 25 G 36 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.99" / 13.8" 36 05 PM Sat Feb 15 2025 12F 5F / 94% WNW 26 G 39 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.99" / 13.8" 37 06 PM Sat Feb 15 2025 11F 6F / 76% WNW 28 G 40 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.99" / 13.8" 38 07 PM Sat Feb 15 2025 9F 7F / 78% WNW 31 G 45 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.99" / 13.8" 39 08 PM Sat Feb 15 2025 9F 8F / 74% WNW 31 G 47 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.99" / 13.8" 40 09 PM Sat Feb 15 2025 10F 8F / 71% WNW 30 G 47 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.99" / 13.8" 41 10 PM Sat Feb 15 2025 11F 10F / 63% WNW 30 G 45 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.99" / 13.8" 42 11 PM Sat Feb 15 2025 12F 11F / 66% WNW 30 G 45 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.99" / 13.8" 43 12 AM Sun Feb 16 2025 12F 11F / 59% WNW 29 G 45 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.99" / 13.8" 44 01 AM Sun Feb 16 2025 13F 12F / 61% WNW 29 G 42 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.99" / 13.8" 45 02 AM Sun Feb 16 2025 14F 12F / 67% WNW 27 G 41 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.99" / 13.8" 46 03 AM Sun Feb 16 2025 14F 11F / 80% WNW 27 G 41 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.99" / 13.8" 47 04 AM Sun Feb 16 2025 15F 13F / 84% WNW 27 G 38 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.99" / 13.8" 48 05 AM Sun Feb 16 2025 16F 13F / 85% WNW 26 G 38 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.99" / 13.8"