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 14-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 Thu Mar 13 2025 25F 17F / 98% SSW 24 G 48 MPH 6900 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 1 07 PM Thu Mar 13 2025 24F 16F / 83% SSW 19 G 42 MPH 6000 FT 9:1 / 11% 0.12" / 1.1" 0.12" / 1.1" 2 08 PM Thu Mar 13 2025 23F 15F / 97% WSW 17 G 34 MPH 4700 FT 10:1 / 10% 0.06" / 0.6" 0.18" / 1.7" 3 09 PM Thu Mar 13 2025 19F 13F / 97% WSW 12 G 22 MPH 4500 FT 13:1 / 8% 0.06" / 0.8" 0.24" / 2.5" 4 10 PM Thu Mar 13 2025 18F 12F / 94% SW 9 G 20 MPH 4300 FT 13:1 / 8% 0.03" / 0.4" 0.27" / 2.9" 5 11 PM Thu Mar 13 2025 15F 11F / 98% WSW 9 G 17 MPH ≤ KSLC 14:1 / 7% 0.03" / 0.4" 0.30" / 3.3" 6 12 AM Fri Mar 14 2025 15F 9F / 96% WNW 11 G 19 MPH ≤ KSLC 16:1 / 6% 0.03" / 0.5" 0.33" / 3.8" 7 01 AM Fri Mar 14 2025 14F 7F / 95% WNW 16 G 28 MPH ≤ KSLC 18:1 / 6% 0.04" / 0.7" 0.37" / 4.5" 8 02 AM Fri Mar 14 2025 13F 5F / 99% WNW 21 G 30 MPH 4300 FT 19:1 / 5% 0.05" / 1.0" 0.42" / 5.5" 9 03 AM Fri Mar 14 2025 12F 5F / 98% NW 22 G 33 MPH ≤ KSLC 19:1 / 5% 0.03" / 0.6" 0.45" / 6.1" 10 04 AM Fri Mar 14 2025 12F 6F / 94% WNW 19 G 27 MPH ≤ KSLC 20:1 / 5% 0.06" / 1.2" 0.51" / 7.3" 11 05 AM Fri Mar 14 2025 13F 5F / 94% WNW 22 G 34 MPH 4300 FT 17:1 / 6% 0.05" / 0.8" 0.56" / 8.1" 12 06 AM Fri Mar 14 2025 13F 6F / 89% WNW 22 G 35 MPH 4300 FT 16:1 / 6% 0.10" / 1.6" 0.66" / 9.7" 13 07 AM Fri Mar 14 2025 12F 5F / 89% WNW 20 G 30 MPH ≤ KSLC 16:1 / 6% 0.02" / 0.3" 0.68" / 10.0" 14 08 AM Fri Mar 14 2025 11F 4F / 78% WNW 22 G 32 MPH ≤ KSLC 17:1 / 6% 0.01" / 0.2" 0.69" / 10.2" 15 09 AM Fri Mar 14 2025 10F 3F / 85% WNW 20 G 29 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.69" / 10.2" 16 10 AM Fri Mar 14 2025 11F 3F / 88% WNW 17 G 27 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 0.69" / 10.2" 17 11 AM Fri Mar 14 2025 13F 4F / 88% WNW 15 G 23 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 0.69" / 10.2" 18 12 PM Fri Mar 14 2025 15F 6F / 83% W 12 G 23 MPH ≤ KSLC 24:1 / 4% 0.00" / 0.0" 0.69" / 10.2" 19 01 PM Fri Mar 14 2025 17F 7F / 89% W 13 G 19 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 0.69" / 10.2" 20 02 PM Fri Mar 14 2025 18F 8F / 84% WSW 12 G 20 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.69" / 10.2" 21 03 PM Fri Mar 14 2025 19F 9F / 96% W 13 G 22 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.69" / 10.2" 22 04 PM Fri Mar 14 2025 19F 9F / 98% WSW 13 G 22 MPH ≤ KSLC 22:1 / 5% 0.01" / 0.2" 0.70" / 10.4" 23 05 PM Fri Mar 14 2025 18F 9F / 96% WSW 13 G 22 MPH 4300 FT 21:1 / 5% 0.01" / 0.2" 0.71" / 10.6" 24 06 PM Fri Mar 14 2025 18F 8F / 99% WSW 11 G 17 MPH 4300 FT 21:1 / 5% 0.01" / 0.2" 0.72" / 10.8" 25 07 PM Fri Mar 14 2025 16F 8F / 99% SW 14 G 23 MPH 4400 FT 20:1 / 5% 0.00" / 0.0" 0.72" / 10.8" 26 08 PM Fri Mar 14 2025 14F 7F / 96% WSW 14 G 23 MPH 4300 FT 17:1 / 6% 0.00" / 0.0" 0.72" / 10.8" 27 09 PM Fri Mar 14 2025 13F 7F / 90% SW 15 G 24 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.72" / 10.8" 28 10 PM Fri Mar 14 2025 12F 7F / 95% SW 14 G 23 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.72" / 10.8" 29 11 PM Fri Mar 14 2025 14F 8F / 97% SW 13 G 22 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.72" / 10.8" 30 12 AM Sat Mar 15 2025 14F 8F / 94% WSW 15 G 22 MPH 4800 FT 18:1 / 6% 0.00" / 0.0" 0.72" / 10.8" 31 01 AM Sat Mar 15 2025 14F 8F / 93% WSW 13 G 21 MPH 4900 FT 16:1 / 6% 0.00" / 0.0" 0.72" / 10.8" 32 02 AM Sat Mar 15 2025 13F 8F / 98% WSW 13 G 21 MPH 4900 FT 17:1 / 6% 0.00" / 0.0" 0.72" / 10.8" 33 03 AM Sat Mar 15 2025 14F 8F / 97% W 13 G 18 MPH 4900 FT 19:1 / 5% 0.00" / 0.0" 0.72" / 10.8" 34 04 AM Sat Mar 15 2025 15F 8F / 100% W 15 G 22 MPH 4900 FT 20:1 / 5% 0.01" / 0.2" 0.73" / 11.0" 35 05 AM Sat Mar 15 2025 14F 8F / 94% WNW 15 G 23 MPH 4600 FT 19:1 / 5% 0.02" / 0.4" 0.75" / 11.4" 36 06 AM Sat Mar 15 2025 15F 8F / 95% WNW 17 G 25 MPH 4600 FT 19:1 / 5% 0.04" / 0.8" 0.79" / 12.2" 37 07 AM Sat Mar 15 2025 15F 8F / 95% WNW 19 G 27 MPH 4500 FT 18:1 / 6% 0.05" / 0.9" 0.84" / 13.1" 38 08 AM Sat Mar 15 2025 14F 8F / 89% WNW 18 G 27 MPH 4500 FT 20:1 / 5% 0.01" / 0.2" 0.85" / 13.3" 39 09 AM Sat Mar 15 2025 14F 8F / 94% WNW 18 G 27 MPH 4500 FT 20:1 / 5% 0.00" / 0.0" 0.85" / 13.3" 40 10 AM Sat Mar 15 2025 15F 8F / 99% WNW 19 G 30 MPH 4500 FT 17:1 / 6% 0.01" / 0.2" 0.86" / 13.5" 41 11 AM Sat Mar 15 2025 16F 9F / 88% WNW 16 G 26 MPH 4400 FT 16:1 / 6% 0.00" / 0.0" 0.86" / 13.5" 42 12 PM Sat Mar 15 2025 17F 10F / 91% W 16 G 27 MPH 4500 FT 20:1 / 5% 0.01" / 0.2" 0.87" / 13.7" 43 01 PM Sat Mar 15 2025 19F 10F / 91% WNW 18 G 29 MPH 4400 FT 18:1 / 6% 0.00" / 0.0" 0.87" / 13.7" 44 02 PM Sat Mar 15 2025 20F 10F / 94% W 19 G 31 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.87" / 13.7" 45 03 PM Sat Mar 15 2025 20F 9F / 93% W 21 G 35 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.87" / 13.7" 46 04 PM Sat Mar 15 2025 20F 10F / 94% W 22 G 36 MPH 4700 FT 17:1 / 6% 0.00" / 0.0" 0.87" / 13.7" 47 05 PM Sat Mar 15 2025 20F 11F / 95% W 19 G 31 MPH 5100 FT 17:1 / 6% 0.01" / 0.2" 0.88" / 13.9" 48 06 PM Sat Mar 15 2025 19F 10F / 97% W 23 G 37 MPH 5100 FT 17:1 / 6% 0.01" / 0.2" 0.89" / 14.1"