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 11-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 11 AM Tue Feb 11 2025 10F 2F / 95% WSW 10 G 15 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 12 PM Tue Feb 11 2025 10F 3F / 94% WSW 8 G 13 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 2 01 PM Tue Feb 11 2025 9F 2F / 100% WSW 10 G 16 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 3 02 PM Tue Feb 11 2025 7F 0F / 100% W 13 G 19 MPH ≤ KSLC 14:1 / 7% 0.01" / 0.1" 0.01" / 0.1" 4 03 PM Tue Feb 11 2025 7F 0F / 100% W 15 G 23 MPH ≤ KSLC 16:1 / 6% 0.01" / 0.2" 0.02" / 0.3" 5 04 PM Tue Feb 11 2025 6F -2F / 98% WNW 17 G 26 MPH ≤ KSLC 15:1 / 7% 0.02" / 0.3" 0.04" / 0.6" 6 05 PM Tue Feb 11 2025 5F -3F / 93% WNW 17 G 27 MPH ≤ KSLC 14:1 / 7% 0.01" / 0.1" 0.05" / 0.7" 7 06 PM Tue Feb 11 2025 2F -5F / 92% WNW 16 G 26 MPH ≤ KSLC 13:1 / 8% 0.01" / 0.1" 0.06" / 0.8" 8 07 PM Tue Feb 11 2025 0F -6F / 91% WNW 19 G 28 MPH ≤ KSLC 14:1 / 7% 0.01" / 0.1" 0.07" / 0.9" 9 08 PM Tue Feb 11 2025 -1F -8F / 84% WNW 21 G 30 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.07" / 0.9" 10 09 PM Tue Feb 11 2025 -2F -9F / 96% WNW 22 G 34 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.07" / 0.9" 11 10 PM Tue Feb 11 2025 -3F -9F / 88% WNW 24 G 35 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.07" / 0.9" 12 11 PM Tue Feb 11 2025 -4F -10F / 90% WNW 25 G 38 MPH ≤ KSLC 16:1 / 6% 0.01" / 0.2" 0.08" / 1.1" 13 12 AM Wed Feb 12 2025 -5F -11F / 89% WNW 26 G 35 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 14 01 AM Wed Feb 12 2025 -5F -11F / 83% WNW 25 G 37 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 15 02 AM Wed Feb 12 2025 -6F -11F / 81% WNW 24 G 35 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 16 03 AM Wed Feb 12 2025 -7F -12F / 79% WNW 23 G 33 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 17 04 AM Wed Feb 12 2025 -7F -13F / 80% NW 23 G 31 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 18 05 AM Wed Feb 12 2025 -8F -12F / 74% NW 23 G 32 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 19 06 AM Wed Feb 12 2025 -8F -12F / 81% WNW 23 G 32 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 20 07 AM Wed Feb 12 2025 -8F -12F / 77% WNW 21 G 29 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 21 08 AM Wed Feb 12 2025 -8F -12F / 87% WNW 20 G 26 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 22 09 AM Wed Feb 12 2025 -7F -10F / 83% WNW 20 G 28 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 23 10 AM Wed Feb 12 2025 -4F -9F / 88% WNW 19 G 25 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 24 11 AM Wed Feb 12 2025 0F -8F / 88% WNW 17 G 24 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 25 12 PM Wed Feb 12 2025 1F -6F / 93% WNW 16 G 24 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.08" / 1.1" 26 01 PM Wed Feb 12 2025 2F -5F / 95% W 17 G 25 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 27 02 PM Wed Feb 12 2025 4F -5F / 86% W 17 G 23 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 28 03 PM Wed Feb 12 2025 3F -5F / 95% W 18 G 26 MPH ≤ KSLC 14:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 29 04 PM Wed Feb 12 2025 3F -5F / 89% W 20 G 28 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 30 05 PM Wed Feb 12 2025 1F -6F / 83% W 20 G 31 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 31 06 PM Wed Feb 12 2025 -1F -7F / 79% WNW 22 G 35 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 32 07 PM Wed Feb 12 2025 -3F -7F / 74% WNW 24 G 37 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 33 08 PM Wed Feb 12 2025 -3F -7F / 67% WNW 26 G 39 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 34 09 PM Wed Feb 12 2025 -3F -5F / 65% WNW 26 G 38 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 35 10 PM Wed Feb 12 2025 0F -3F / 61% WNW 27 G 38 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 36 11 PM Wed Feb 12 2025 0F -1F / 57% WNW 27 G 39 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 37 12 AM Thu Feb 13 2025 1F 0F / 57% WNW 27 G 39 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 38 01 AM Thu Feb 13 2025 1F 1F / 50% W 27 G 39 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 39 02 AM Thu Feb 13 2025 3F 3F / 44% W 26 G 36 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 40 03 AM Thu Feb 13 2025 5F 4F / 45% W 26 G 38 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 41 04 AM Thu Feb 13 2025 6F 5F / 47% WSW 26 G 38 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 0.08" / 1.1" 42 05 AM Thu Feb 13 2025 8F 7F / 50% WSW 23 G 34 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 43 06 AM Thu Feb 13 2025 9F 8F / 49% WSW 24 G 36 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 44 07 AM Thu Feb 13 2025 10F 9F / 46% SW 25 G 39 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.08" / 1.1" 45 08 AM Thu Feb 13 2025 11F 9F / 51% SW 26 G 45 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.08" / 1.1" 46 09 AM Thu Feb 13 2025 14F 11F / 66% SSW 27 G 45 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.08" / 1.1" 47 10 AM Thu Feb 13 2025 16F 14F / 69% SSW 26 G 46 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.08" / 1.1" 48 11 AM Thu Feb 13 2025 18F 16F / 55% SSW 25 G 47 MPH ≤ KSLC 8:1 / 12% 0.00" / 0.0" 0.08" / 1.1"