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 13-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 Thu Mar 13 2025 27F 18F / 100% S 26 G 53 MPH 7100 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Thu Mar 13 2025 27F 18F / 99% S 27 G 56 MPH 7100 FT 7:1 / 14% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Thu Mar 13 2025 27F 18F / 95% S 28 G 59 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Thu Mar 13 2025 26F 18F / 98% S 29 G 62 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Thu Mar 13 2025 26F 18F / 100% S 27 G 56 MPH 7000 FT 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Thu Mar 13 2025 27F 18F / 100% S 28 G 56 MPH 7000 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Thu Mar 13 2025 26F 19F / 100% S 18 G 36 MPH 7300 FT 12:1 / 8% 0.03" / 0.4" 0.03" / 0.4" 7 07 AM Thu Mar 13 2025 26F 19F / 100% S 21 G 49 MPH 7300 FT 10:1 / 10% 0.05" / 0.5" 0.08" / 0.9" 8 08 AM Thu Mar 13 2025 26F 18F / 99% S 18 G 40 MPH 7200 FT 9:1 / 11% 0.05" / 0.4" 0.13" / 1.3" 9 09 AM Thu Mar 13 2025 26F 18F / 100% S 21 G 46 MPH 7000 FT 9:1 / 11% 0.06" / 0.5" 0.19" / 1.8" 10 10 AM Thu Mar 13 2025 26F 18F / 100% S 20 G 45 MPH 7100 FT 10:1 / 10% 0.03" / 0.3" 0.22" / 2.1" 11 11 AM Thu Mar 13 2025 26F 18F / 100% S 21 G 46 MPH 7100 FT 10:1 / 10% 0.02" / 0.2" 0.24" / 2.3" 12 12 PM Thu Mar 13 2025 28F 18F / 99% SSE 18 G 43 MPH 7200 FT 10:1 / 10% 0.00" / 0.0" 0.24" / 2.3" 13 01 PM Thu Mar 13 2025 29F 20F / 93% S 18 G 44 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.24" / 2.3" 14 02 PM Thu Mar 13 2025 28F 20F / 94% S 17 G 40 MPH 7100 FT 11:1 / 9% 0.03" / 0.3" 0.27" / 2.6" 15 03 PM Thu Mar 13 2025 28F 21F / 94% S 16 G 37 MPH 7200 FT 10:1 / 10% 0.18" / 1.8" 0.45" / 4.4" 16 04 PM Thu Mar 13 2025 27F 19F / 93% S 16 G 36 MPH 7100 FT 11:1 / 9% 0.16" / 1.8" 0.61" / 6.2" 17 05 PM Thu Mar 13 2025 27F 19F / 89% S 17 G 39 MPH 7200 FT 10:1 / 10% 0.07" / 0.7" 0.68" / 6.9" 18 06 PM Thu Mar 13 2025 27F 18F / 96% SSW 15 G 31 MPH 6900 FT 12:1 / 8% 0.08" / 1.0" 0.76" / 7.9" 19 07 PM Thu Mar 13 2025 25F 17F / 90% SSW 18 G 39 MPH 6900 FT 10:1 / 10% 0.20" / 2.0" 0.96" / 9.9" 20 08 PM Thu Mar 13 2025 24F 16F / 96% SW 19 G 35 MPH 6000 FT 11:1 / 9% 0.10" / 1.1" 1.06" / 11.0" 21 09 PM Thu Mar 13 2025 22F 13F / 90% WSW 19 G 36 MPH 5200 FT 9:1 / 11% 0.07" / 0.6" 1.13" / 11.6" 22 10 PM Thu Mar 13 2025 19F 12F / 97% WSW 10 G 22 MPH 4800 FT 13:1 / 8% 0.08" / 1.0" 1.21" / 12.6" 23 11 PM Thu Mar 13 2025 17F 11F / 98% W 12 G 23 MPH 4500 FT 16:1 / 6% 0.09" / 1.4" 1.30" / 14.0" 24 12 AM Fri Mar 14 2025 16F 9F / 94% WNW 15 G 25 MPH ≤ KSLC 16:1 / 6% 0.06" / 1.0" 1.36" / 15.0" 25 01 AM Fri Mar 14 2025 14F 7F / 95% WNW 22 G 37 MPH 4500 FT 15:1 / 7% 0.06" / 0.9" 1.42" / 15.9" 26 02 AM Fri Mar 14 2025 14F 6F / 92% WNW 24 G 36 MPH 4600 FT 18:1 / 6% 0.06" / 1.1" 1.48" / 17.0" 27 03 AM Fri Mar 14 2025 13F 6F / 93% WNW 23 G 34 MPH 4400 FT 19:1 / 5% 0.04" / 0.8" 1.52" / 17.8" 28 04 AM Fri Mar 14 2025 13F 6F / 94% WNW 25 G 36 MPH ≤ KSLC 15:1 / 7% 0.05" / 0.8" 1.57" / 18.6" 29 05 AM Fri Mar 14 2025 13F 6F / 90% WNW 24 G 36 MPH ≤ KSLC 14:1 / 7% 0.06" / 0.8" 1.63" / 19.4" 30 06 AM Fri Mar 14 2025 12F 4F / 93% WNW 23 G 37 MPH ≤ KSLC 15:1 / 7% 0.05" / 0.8" 1.68" / 20.2" 31 07 AM Fri Mar 14 2025 11F 5F / 89% WNW 22 G 36 MPH ≤ KSLC 15:1 / 7% 0.04" / 0.6" 1.72" / 20.8" 32 08 AM Fri Mar 14 2025 12F 5F / 88% WNW 24 G 38 MPH ≤ KSLC 15:1 / 7% 0.05" / 0.8" 1.77" / 21.6" 33 09 AM Fri Mar 14 2025 10F 4F / 85% WNW 20 G 33 MPH ≤ KSLC 18:1 / 6% 0.02" / 0.4" 1.79" / 22.0" 34 10 AM Fri Mar 14 2025 11F 4F / 89% W 20 G 32 MPH ≤ KSLC 17:1 / 6% 0.02" / 0.3" 1.81" / 22.3" 35 11 AM Fri Mar 14 2025 12F 3F / 83% WNW 19 G 27 MPH ≤ KSLC 19:1 / 5% 0.02" / 0.4" 1.83" / 22.7" 36 12 PM Fri Mar 14 2025 14F 4F / 90% WNW 21 G 31 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.83" / 22.7" 37 01 PM Fri Mar 14 2025 14F 5F / 86% WNW 20 G 31 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 1.83" / 22.7" 38 02 PM Fri Mar 14 2025 16F 6F / 89% W 18 G 27 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 1.83" / 22.7" 39 03 PM Fri Mar 14 2025 18F 8F / 87% W 19 G 29 MPH ≤ KSLC 20:1 / 5% 0.02" / 0.4" 1.85" / 23.1" 40 04 PM Fri Mar 14 2025 17F 7F / 92% W 19 G 31 MPH ≤ KSLC 20:1 / 5% 0.04" / 0.8" 1.89" / 23.9" 41 05 PM Fri Mar 14 2025 16F 7F / 95% W 19 G 31 MPH ≤ KSLC 21:1 / 5% 0.04" / 0.8" 1.93" / 24.7" 42 06 PM Fri Mar 14 2025 15F 6F / 94% W 19 G 31 MPH ≤ KSLC 20:1 / 5% 0.02" / 0.4" 1.95" / 25.1" 43 07 PM Fri Mar 14 2025 14F 5F / 94% W 18 G 29 MPH ≤ KSLC 20:1 / 5% 0.02" / 0.4" 1.97" / 25.5" 44 08 PM Fri Mar 14 2025 13F 6F / 94% W 22 G 34 MPH ≤ KSLC 18:1 / 6% 0.01" / 0.2" 1.98" / 25.7" 45 09 PM Fri Mar 14 2025 13F 7F / 96% W 24 G 38 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 1.98" / 25.7" 46 10 PM Fri Mar 14 2025 13F 6F / 94% WNW 24 G 37 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 1.98" / 25.7" 47 11 PM Fri Mar 14 2025 13F 7F / 92% WNW 23 G 36 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 1.98" / 25.7" 48 12 AM Sat Mar 15 2025 12F 7F / 90% WNW 23 G 36 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 1.98" / 25.7"