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 21-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 PM Thu Feb 20 2025 18F 11F / 96% NW 20 G 28 MPH 4400 FT 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 1 06 PM Thu Feb 20 2025 16F 10F / 98% NW 18 G 28 MPH 4300 FT 14:1 / 7% 0.02" / 0.3" 0.02" / 0.3" 2 07 PM Thu Feb 20 2025 15F 10F / 100% NNW 16 G 25 MPH 4400 FT 15:1 / 7% 0.01" / 0.2" 0.03" / 0.5" 3 08 PM Thu Feb 20 2025 15F 10F / 100% NNW 14 G 23 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 4 09 PM Thu Feb 20 2025 15F 11F / 100% SE 13 G 21 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 5 10 PM Thu Feb 20 2025 15F 11F / 95% NNW 13 G 21 MPH 4500 FT 17:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 6 11 PM Thu Feb 20 2025 15F 11F / 97% NNW 13 G 20 MPH 4600 FT 17:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 7 12 AM Fri Feb 21 2025 16F 11F / 97% NNW 12 G 17 MPH 4500 FT 16:1 / 6% 0.00" / 0.0" 0.03" / 0.5" 8 01 AM Fri Feb 21 2025 15F 11F / 98% NNW 11 G 16 MPH 4400 FT 14:1 / 7% 0.00" / 0.0" 0.03" / 0.5" 9 02 AM Fri Feb 21 2025 16F 11F / 97% NNW 11 G 15 MPH 4400 FT 14:1 / 7% 0.00" / 0.0" 0.03" / 0.5" 10 03 AM Fri Feb 21 2025 16F 12F / 89% SE 13 G 20 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.03" / 0.5" 11 04 AM Fri Feb 21 2025 15F 12F / 87% NW 16 G 23 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.03" / 0.5" 12 05 AM Fri Feb 21 2025 14F 11F / 86% NNW 16 G 22 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.03" / 0.5" 13 06 AM Fri Feb 21 2025 13F 11F / 80% NNW 14 G 21 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.03" / 0.5" 14 07 AM Fri Feb 21 2025 13F 11F / 73% NNW 14 G 20 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.03" / 0.5" 15 08 AM Fri Feb 21 2025 13F 12F / 66% NNW 13 G 18 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.5" 16 09 AM Fri Feb 21 2025 14F 13F / 66% NNW 12 G 16 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.5" 17 10 AM Fri Feb 21 2025 17F 15F / 64% NNW 11 G 14 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.03" / 0.5" 18 11 AM Fri Feb 21 2025 21F 17F / 61% NNW 9 G 12 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.03" / 0.5" 19 12 PM Fri Feb 21 2025 23F 17F / 59% NNW 5 G 9 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.03" / 0.5" 20 01 PM Fri Feb 21 2025 24F 18F / 59% NW 5 G 7 MPH 4500 FT 14:1 / 7% 0.00" / 0.0" 0.03" / 0.5" 21 02 PM Fri Feb 21 2025 26F 19F / 65% NW 4 G 8 MPH 4700 FT 13:1 / 8% 0.00" / 0.0" 0.03" / 0.5" 22 03 PM Fri Feb 21 2025 24F 19F / 65% WNW 5 G 9 MPH 4900 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 23 04 PM Fri Feb 21 2025 21F 18F / 62% WNW 7 G 10 MPH 4700 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.5" 24 05 PM Fri Feb 21 2025 19F 18F / 59% WNW 7 G 10 MPH 4900 FT 11:1 / 9% 0.00" / 0.0" 0.03" / 0.5" 25 06 PM Fri Feb 21 2025 19F 19F / 48% WNW 10 G 14 MPH 4800 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 26 07 PM Fri Feb 21 2025 17F 18F / 41% WNW 12 G 17 MPH 4900 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 27 08 PM Fri Feb 21 2025 17F 17F / 42% WNW 11 G 14 MPH 4500 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 28 09 PM Fri Feb 21 2025 18F 18F / 36% WNW 13 G 16 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 29 10 PM Fri Feb 21 2025 17F 18F / 34% WNW 14 G 18 MPH 4400 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 30 11 PM Fri Feb 21 2025 17F 18F / 33% W 14 G 19 MPH 4400 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 31 12 AM Sat Feb 22 2025 17F 18F / 33% W 15 G 20 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 32 01 AM Sat Feb 22 2025 16F 18F / 32% W 16 G 22 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 33 02 AM Sat Feb 22 2025 17F 18F / 31% W 17 G 25 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 34 03 AM Sat Feb 22 2025 17F 18F / 30% W 20 G 27 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.03" / 0.5" 35 04 AM Sat Feb 22 2025 17F 18F / 29% W 20 G 29 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.03" / 0.5" 36 05 AM Sat Feb 22 2025 18F 18F / 29% W 21 G 30 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.03" / 0.5" 37 06 AM Sat Feb 22 2025 18F 19F / 32% WNW 21 G 28 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 38 07 AM Sat Feb 22 2025 17F 19F / 36% WNW 20 G 29 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 39 08 AM Sat Feb 22 2025 19F 20F / 34% WNW 20 G 27 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 40 09 AM Sat Feb 22 2025 20F 21F / 38% WNW 19 G 27 MPH 4300 FT 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 41 10 AM Sat Feb 22 2025 23F 22F / 35% WNW 17 G 25 MPH 4600 FT 8:1 / 12% 0.00" / 0.0" 0.03" / 0.5" 42 11 AM Sat Feb 22 2025 28F 24F / 38% W 16 G 25 MPH 4700 FT 8:1 / 12% 0.00" / 0.0" 0.03" / 0.5" 43 12 PM Sat Feb 22 2025 29F 24F / 38% W 17 G 26 MPH 5300 FT 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 44 01 PM Sat Feb 22 2025 29F 23F / 40% W 17 G 26 MPH 5600 FT 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 45 02 PM Sat Feb 22 2025 30F 23F / 42% W 16 G 25 MPH 5800 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 46 03 PM Sat Feb 22 2025 28F 23F / 43% W 15 G 24 MPH 6000 FT 10:1 / 10% 0.00" / 0.0" 0.03" / 0.5" 47 04 PM Sat Feb 22 2025 26F 23F / 50% W 19 G 28 MPH 6100 FT 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5" 48 05 PM Sat Feb 22 2025 26F 22F / 50% WNW 18 G 26 MPH 6200 FT 9:1 / 11% 0.00" / 0.0" 0.03" / 0.5"