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 06-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 11 AM Thu Mar 06 2025 27F 18F / 97% SSW 11 G 24 MPH 6200 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 1 12 PM Thu Mar 06 2025 27F 17F / 95% S 17 G 38 MPH 6100 FT 10:1 / 10% 0.07" / 0.7" 0.07" / 0.7" 2 01 PM Thu Mar 06 2025 27F 18F / 100% SSW 16 G 33 MPH 6400 FT 12:1 / 8% 0.09" / 1.1" 0.16" / 1.8" 3 02 PM Thu Mar 06 2025 25F 16F / 98% SSW 17 G 40 MPH 6300 FT 11:1 / 9% 0.03" / 0.3" 0.19" / 2.1" 4 03 PM Thu Mar 06 2025 26F 16F / 88% S 16 G 36 MPH 6300 FT 10:1 / 10% 0.01" / 0.1" 0.20" / 2.2" 5 04 PM Thu Mar 06 2025 23F 14F / 84% SSW 17 G 36 MPH 5900 FT 12:1 / 8% 0.02" / 0.2" 0.22" / 2.4" 6 05 PM Thu Mar 06 2025 22F 13F / 87% SSW 15 G 33 MPH 6200 FT 14:1 / 7% 0.00" / 0.0" 0.22" / 2.4" 7 06 PM Thu Mar 06 2025 20F 12F / 92% SW 14 G 27 MPH 5800 FT 15:1 / 7% 0.00" / 0.0" 0.22" / 2.4" 8 07 PM Thu Mar 06 2025 19F 12F / 87% S 11 G 22 MPH 5800 FT 14:1 / 7% 0.00" / 0.0" 0.22" / 2.4" 9 08 PM Thu Mar 06 2025 17F 11F / 85% SW 13 G 24 MPH 5800 FT 14:1 / 7% 0.05" / 0.7" 0.27" / 3.1" 10 09 PM Thu Mar 06 2025 16F 10F / 94% WSW 13 G 22 MPH 5800 FT 16:1 / 6% 0.00" / 0.0" 0.27" / 3.1" 11 10 PM Thu Mar 06 2025 16F 11F / 94% WSW 12 G 18 MPH 5300 FT 16:1 / 6% 0.01" / 0.2" 0.28" / 3.3" 12 11 PM Thu Mar 06 2025 16F 11F / 95% WSW 12 G 18 MPH 5100 FT 14:1 / 7% 0.01" / 0.1" 0.29" / 3.4" 13 12 AM Fri Mar 07 2025 16F 11F / 92% WNW 15 G 22 MPH 5200 FT 16:1 / 6% 0.06" / 1.0" 0.35" / 4.4" 14 01 AM Fri Mar 07 2025 17F 10F / 96% WNW 15 G 24 MPH 5300 FT 15:1 / 7% 0.04" / 0.6" 0.39" / 5.0" 15 02 AM Fri Mar 07 2025 17F 10F / 97% WNW 14 G 22 MPH 5100 FT 15:1 / 7% 0.03" / 0.4" 0.42" / 5.4" 16 03 AM Fri Mar 07 2025 17F 10F / 98% W 15 G 24 MPH 5000 FT 16:1 / 6% 0.02" / 0.3" 0.44" / 5.7" 17 04 AM Fri Mar 07 2025 17F 10F / 99% WNW 20 G 27 MPH 4800 FT 14:1 / 7% 0.01" / 0.1" 0.45" / 5.8" 18 05 AM Fri Mar 07 2025 16F 10F / 99% WNW 17 G 25 MPH 4700 FT 16:1 / 6% 0.01" / 0.2" 0.46" / 6.0" 19 06 AM Fri Mar 07 2025 16F 9F / 98% WNW 14 G 22 MPH 4700 FT 16:1 / 6% 0.02" / 0.3" 0.48" / 6.3" 20 07 AM Fri Mar 07 2025 16F 9F / 98% WNW 13 G 20 MPH 4600 FT 15:1 / 7% 0.02" / 0.3" 0.50" / 6.6" 21 08 AM Fri Mar 07 2025 15F 9F / 100% WNW 10 G 15 MPH 4500 FT 18:1 / 6% 0.02" / 0.4" 0.52" / 7.0" 22 09 AM Fri Mar 07 2025 16F 9F / 96% WNW 8 G 9 MPH 4400 FT 20:1 / 5% 0.01" / 0.2" 0.53" / 7.2" 23 10 AM Fri Mar 07 2025 18F 11F / 98% NW 6 G 12 MPH 4600 FT 21:1 / 5% 0.01" / 0.2" 0.54" / 7.4" 24 11 AM Fri Mar 07 2025 20F 13F / 92% NNW 7 G 10 MPH 4800 FT 19:1 / 5% 0.01" / 0.2" 0.55" / 7.6" 25 12 PM Fri Mar 07 2025 21F 13F / 97% NNW 8 G 16 MPH 4900 FT 19:1 / 5% 0.01" / 0.2" 0.56" / 7.8" 26 01 PM Fri Mar 07 2025 19F 13F / 99% NNW 11 G 19 MPH 4900 FT 18:1 / 6% 0.01" / 0.2" 0.57" / 8.0" 27 02 PM Fri Mar 07 2025 21F 12F / 100% NNW 13 G 24 MPH 4900 FT 18:1 / 6% 0.00" / 0.0" 0.57" / 8.0" 28 03 PM Fri Mar 07 2025 21F 13F / 97% NNW 15 G 24 MPH 4900 FT 18:1 / 6% 0.00" / 0.0" 0.57" / 8.0" 29 04 PM Fri Mar 07 2025 20F 11F / 95% NNW 16 G 27 MPH 4900 FT 17:1 / 6% 0.00" / 0.0" 0.57" / 8.0" 30 05 PM Fri Mar 07 2025 17F 10F / 92% NNW 19 G 30 MPH 4800 FT 15:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 31 06 PM Fri Mar 07 2025 15F 9F / 88% NNW 19 G 30 MPH 4700 FT 16:1 / 6% 0.00" / 0.0" 0.57" / 8.0" 32 07 PM Fri Mar 07 2025 12F 7F / 85% NNW 18 G 27 MPH 4600 FT 14:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 33 08 PM Fri Mar 07 2025 10F 7F / 82% N 18 G 28 MPH 4400 FT 16:1 / 6% 0.00" / 0.0" 0.57" / 8.0" 34 09 PM Fri Mar 07 2025 10F 7F / 81% N 18 G 30 MPH 4400 FT 14:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 35 10 PM Fri Mar 07 2025 10F 6F / 86% N 19 G 31 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.57" / 8.0" 36 11 PM Fri Mar 07 2025 9F 7F / 87% N 20 G 31 MPH 4400 FT 12:1 / 8% 0.00" / 0.0" 0.57" / 8.0" 37 12 AM Sat Mar 08 2025 8F 6F / 85% N 19 G 30 MPH 4500 FT 14:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 38 01 AM Sat Mar 08 2025 8F 5F / 87% N 21 G 31 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.57" / 8.0" 39 02 AM Sat Mar 08 2025 8F 6F / 88% NNE 20 G 33 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.57" / 8.0" 40 03 AM Sat Mar 08 2025 7F 6F / 89% N 21 G 31 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 41 04 AM Sat Mar 08 2025 6F 5F / 82% NNE 20 G 33 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 42 05 AM Sat Mar 08 2025 7F 7F / 69% NNE 21 G 33 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 43 06 AM Sat Mar 08 2025 7F 7F / 61% NNE 19 G 30 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.57" / 8.0" 44 07 AM Sat Mar 08 2025 8F 8F / 59% N 19 G 32 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.57" / 8.0" 45 08 AM Sat Mar 08 2025 8F 9F / 52% NNE 16 G 27 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.57" / 8.0" 46 09 AM Sat Mar 08 2025 12F 12F / 47% N 17 G 25 MPH 4500 FT 12:1 / 8% 0.00" / 0.0" 0.57" / 8.0" 47 10 AM Sat Mar 08 2025 17F 15F / 49% N 15 G 24 MPH 4900 FT 12:1 / 8% 0.00" / 0.0" 0.57" / 8.0" 48 11 AM Sat Mar 08 2025 22F 17F / 47% N 12 G 22 MPH 4900 FT 12:1 / 8% 0.00" / 0.0" 0.57" / 8.0"