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 20-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 PM Thu Mar 20 2025 23F 16F / 60% W 21 G 33 MPH 4800 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 01 PM Thu Mar 20 2025 22F 15F / 82% W 15 G 25 MPH 4600 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 2 02 PM Thu Mar 20 2025 22F 14F / 70% W 19 G 29 MPH 4600 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 3 03 PM Thu Mar 20 2025 23F 13F / 84% W 20 G 30 MPH 5100 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 4 04 PM Thu Mar 20 2025 24F 14F / 91% W 21 G 33 MPH 5200 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 5 05 PM Thu Mar 20 2025 23F 14F / 90% W 21 G 33 MPH 5300 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 6 06 PM Thu Mar 20 2025 21F 13F / 91% W 21 G 31 MPH 5100 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 7 07 PM Thu Mar 20 2025 18F 12F / 88% W 21 G 33 MPH 5000 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 8 08 PM Thu Mar 20 2025 15F 10F / 87% WNW 24 G 37 MPH 5000 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 9 09 PM Thu Mar 20 2025 13F 9F / 78% WNW 26 G 37 MPH 5000 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 10 10 PM Thu Mar 20 2025 13F 9F / 74% WNW 25 G 36 MPH 4800 FT 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 11 11 PM Thu Mar 20 2025 13F 10F / 74% WNW 25 G 35 MPH 4700 FT 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 12 12 AM Fri Mar 21 2025 13F 10F / 73% WNW 27 G 38 MPH 4600 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 13 01 AM Fri Mar 21 2025 14F 11F / 67% WNW 29 G 42 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 14 02 AM Fri Mar 21 2025 14F 11F / 63% WNW 29 G 44 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 15 03 AM Fri Mar 21 2025 15F 12F / 62% WNW 29 G 43 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 16 04 AM Fri Mar 21 2025 16F 12F / 63% WNW 30 G 44 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 17 05 AM Fri Mar 21 2025 16F 12F / 62% WNW 32 G 47 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 18 06 AM Fri Mar 21 2025 17F 13F / 63% WNW 30 G 45 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 19 07 AM Fri Mar 21 2025 16F 12F / 67% WNW 27 G 41 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 20 08 AM Fri Mar 21 2025 16F 12F / 68% WNW 26 G 39 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 21 09 AM Fri Mar 21 2025 17F 13F / 72% WNW 24 G 35 MPH 4300 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 22 10 AM Fri Mar 21 2025 20F 14F / 71% W 22 G 31 MPH 4700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 23 11 AM Fri Mar 21 2025 22F 15F / 78% W 19 G 29 MPH 5100 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 24 12 PM Fri Mar 21 2025 22F 16F / 79% W 16 G 25 MPH 5200 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 25 01 PM Fri Mar 21 2025 25F 17F / 85% WSW 16 G 28 MPH 5500 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 26 02 PM Fri Mar 21 2025 25F 18F / 82% WSW 17 G 29 MPH 5700 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 27 03 PM Fri Mar 21 2025 26F 18F / 82% WSW 18 G 31 MPH 6000 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 28 04 PM Fri Mar 21 2025 26F 18F / 85% WSW 19 G 33 MPH 6200 FT 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 29 05 PM Fri Mar 21 2025 25F 18F / 88% WSW 21 G 35 MPH 6400 FT 9:1 / 11% 0.01" / 0.1" 0.01" / 0.1" 30 06 PM Fri Mar 21 2025 25F 19F / 94% WSW 22 G 36 MPH 6600 FT 8:1 / 12% 0.01" / 0.1" 0.02" / 0.2" 31 07 PM Fri Mar 21 2025 24F 19F / 93% WSW 23 G 39 MPH 6800 FT 8:1 / 12% 0.01" / 0.1" 0.03" / 0.3" 32 08 PM Fri Mar 21 2025 24F 19F / 94% WSW 24 G 41 MPH 6700 FT 9:1 / 11% 0.03" / 0.3" 0.06" / 0.6" 33 09 PM Fri Mar 21 2025 25F 20F / 97% WSW 25 G 42 MPH 6700 FT 8:1 / 12% 0.05" / 0.4" 0.11" / 1.0" 34 10 PM Fri Mar 21 2025 25F 20F / 98% WSW 25 G 41 MPH 7000 FT 7:1 / 14% 0.06" / 0.4" 0.17" / 1.4" 35 11 PM Fri Mar 21 2025 25F 20F / 99% W 27 G 43 MPH 7500 FT 7:1 / 14% 0.07" / 0.5" 0.24" / 1.9" 36 12 AM Sat Mar 22 2025 25F 19F / 100% W 28 G 44 MPH 7500 FT 8:1 / 12% 0.07" / 0.6" 0.31" / 2.5" 37 01 AM Sat Mar 22 2025 26F 20F / 96% W 26 G 44 MPH 7600 FT 9:1 / 11% 0.05" / 0.4" 0.36" / 2.9" 38 02 AM Sat Mar 22 2025 25F 20F / 97% W 26 G 41 MPH 7600 FT 10:1 / 10% 0.02" / 0.2" 0.38" / 3.1" 39 03 AM Sat Mar 22 2025 25F 19F / 98% W 24 G 39 MPH 7600 FT 10:1 / 10% 0.00" / 0.0" 0.38" / 3.1" 40 04 AM Sat Mar 22 2025 25F 19F / 96% W 23 G 36 MPH 7600 FT 12:1 / 8% 0.01" / 0.1" 0.39" / 3.2" 41 05 AM Sat Mar 22 2025 24F 19F / 95% W 24 G 34 MPH 7400 FT 12:1 / 8% 0.08" / 1.0" 0.47" / 4.2" 42 06 AM Sat Mar 22 2025 24F 19F / 96% W 23 G 35 MPH 7400 FT 12:1 / 8% 0.09" / 1.1" 0.56" / 5.3" 43 07 AM Sat Mar 22 2025 24F 18F / 97% W 24 G 39 MPH 7200 FT 12:1 / 8% 0.11" / 1.3" 0.67" / 6.6" 44 08 AM Sat Mar 22 2025 23F 17F / 94% W 26 G 42 MPH 7000 FT 12:1 / 8% 0.08" / 1.0" 0.75" / 7.6" 45 09 AM Sat Mar 22 2025 23F 17F / 93% W 27 G 41 MPH 6700 FT 10:1 / 10% 0.12" / 1.2" 0.87" / 8.8" 46 10 AM Sat Mar 22 2025 23F 16F / 92% W 26 G 41 MPH 6300 FT 10:1 / 10% 0.05" / 0.5" 0.92" / 9.3" 47 11 AM Sat Mar 22 2025 23F 16F / 91% W 26 G 42 MPH 6200 FT 10:1 / 10% 0.05" / 0.5" 0.97" / 9.8" 48 12 PM Sat Mar 22 2025 25F 17F / 90% W 26 G 42 MPH 6600 FT 11:1 / 9% 0.04" / 0.4" 1.01" / 10.2"