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 19-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 Wed Mar 19 2025 7F 1F / 91% NW 26 G 40 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 1 01 AM Wed Mar 19 2025 6F 2F / 88% NW 27 G 40 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 2 02 AM Wed Mar 19 2025 6F 1F / 84% NW 23 G 37 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 3 03 AM Wed Mar 19 2025 5F 1F / 84% NW 21 G 32 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 4 04 AM Wed Mar 19 2025 4F 1F / 93% NW 19 G 29 MPH ≤ KSLC 17:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 5 05 AM Wed Mar 19 2025 4F 1F / 88% NW 18 G 26 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 6 06 AM Wed Mar 19 2025 4F 1F / 81% NW 19 G 27 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 7 07 AM Wed Mar 19 2025 4F 1F / 78% NW 19 G 27 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 8 08 AM Wed Mar 19 2025 4F 1F / 78% NW 17 G 26 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 9 09 AM Wed Mar 19 2025 5F 2F / 73% NW 17 G 26 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 10 10 AM Wed Mar 19 2025 8F 4F / 66% NW 19 G 26 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 11 11 AM Wed Mar 19 2025 11F 6F / 67% NW 16 G 23 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 12 12 PM Wed Mar 19 2025 15F 7F / 74% NW 13 G 19 MPH ≤ KSLC 20:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 13 01 PM Wed Mar 19 2025 17F 9F / 72% NW 10 G 15 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 14 02 PM Wed Mar 19 2025 19F 10F / 71% WNW 11 G 13 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 0.00" / 0.0" 15 03 PM Wed Mar 19 2025 21F 11F / 86% NW 10 G 15 MPH 4300 FT 16:1 / 6% 0.00" / 0.0" 0.00" / 0.0" 16 04 PM Wed Mar 19 2025 19F 12F / 71% NW 10 G 12 MPH 4400 FT 15:1 / 7% 0.00" / 0.0" 0.00" / 0.0" 17 05 PM Wed Mar 19 2025 19F 14F / 71% NW 8 G 10 MPH 4300 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 18 06 PM Wed Mar 19 2025 20F 16F / 59% WNW 10 G 15 MPH 4300 FT 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 19 07 PM Wed Mar 19 2025 19F 16F / 52% W 13 G 18 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 20 08 PM Wed Mar 19 2025 15F 14F / 48% W 14 G 21 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 21 09 PM Wed Mar 19 2025 14F 15F / 40% WSW 16 G 22 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 22 10 PM Wed Mar 19 2025 16F 16F / 34% WSW 18 G 24 MPH ≤ KSLC 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 23 11 PM Wed Mar 19 2025 17F 16F / 28% WSW 19 G 27 MPH ≤ KSLC 9:1 / 11% 0.00" / 0.0" 0.00" / 0.0" 24 12 AM Thu Mar 20 2025 17F 17F / 33% WSW 18 G 27 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.00" / 0.0" 25 01 AM Thu Mar 20 2025 17F 17F / 39% WSW 18 G 27 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 26 02 AM Thu Mar 20 2025 18F 16F / 45% WSW 19 G 31 MPH ≤ KSLC 13:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 27 03 AM Thu Mar 20 2025 19F 17F / 86% SW 19 G 31 MPH ≤ KSLC 11:1 / 9% 0.01" / 0.1" 0.01" / 0.1" 28 04 AM Thu Mar 20 2025 20F 18F / 63% SW 24 G 39 MPH ≤ KSLC 13:1 / 8% 0.01" / 0.1" 0.02" / 0.2" 29 05 AM Thu Mar 20 2025 19F 17F / 52% SW 25 G 42 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.02" / 0.2" 30 06 AM Thu Mar 20 2025 18F 16F / 47% SW 23 G 40 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.02" / 0.2" 31 07 AM Thu Mar 20 2025 18F 15F / 57% SW 23 G 40 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.02" / 0.2" 32 08 AM Thu Mar 20 2025 18F 15F / 67% WSW 27 G 44 MPH ≤ KSLC 10:1 / 10% 0.00" / 0.0" 0.02" / 0.2" 33 09 AM Thu Mar 20 2025 19F 15F / 65% WSW 23 G 37 MPH ≤ KSLC 12:1 / 8% 0.00" / 0.0" 0.02" / 0.2" 34 10 AM Thu Mar 20 2025 20F 14F / 63% WSW 21 G 35 MPH 4600 FT 14:1 / 7% 0.00" / 0.0" 0.02" / 0.2" 35 11 AM Thu Mar 20 2025 21F 14F / 68% WSW 20 G 34 MPH 5000 FT 15:1 / 7% 0.00" / 0.0" 0.02" / 0.2" 36 12 PM Thu Mar 20 2025 21F 13F / 96% W 21 G 34 MPH 5100 FT 14:1 / 7% 0.01" / 0.1" 0.03" / 0.3" 37 01 PM Thu Mar 20 2025 21F 14F / 93% WSW 19 G 34 MPH 5200 FT 17:1 / 6% 0.04" / 0.7" 0.07" / 1.0" 38 02 PM Thu Mar 20 2025 22F 16F / 91% W 21 G 34 MPH 5400 FT 16:1 / 6% 0.02" / 0.3" 0.09" / 1.3" 39 03 PM Thu Mar 20 2025 22F 14F / 93% W 20 G 34 MPH 5600 FT 15:1 / 7% 0.02" / 0.3" 0.11" / 1.6" 40 04 PM Thu Mar 20 2025 22F 14F / 88% W 23 G 39 MPH 5700 FT 15:1 / 7% 0.00" / 0.0" 0.11" / 1.6" 41 05 PM Thu Mar 20 2025 22F 13F / 94% W 25 G 42 MPH 5600 FT 15:1 / 7% 0.00" / 0.0" 0.11" / 1.6" 42 06 PM Thu Mar 20 2025 21F 13F / 91% W 27 G 44 MPH 5500 FT 14:1 / 7% 0.00" / 0.0" 0.11" / 1.6" 43 07 PM Thu Mar 20 2025 19F 13F / 88% WNW 22 G 35 MPH 5200 FT 15:1 / 7% 0.02" / 0.3" 0.13" / 1.9" 44 08 PM Thu Mar 20 2025 18F 12F / 88% WNW 28 G 42 MPH 5200 FT 15:1 / 7% 0.00" / 0.0" 0.13" / 1.9" 45 09 PM Thu Mar 20 2025 16F 12F / 87% WNW 28 G 42 MPH 5100 FT 17:1 / 6% 0.00" / 0.0" 0.13" / 1.9" 46 10 PM Thu Mar 20 2025 13F 9F / 85% WNW 28 G 41 MPH 5000 FT 14:1 / 7% 0.00" / 0.0" 0.13" / 1.9" 47 11 PM Thu Mar 20 2025 13F 9F / 75% WNW 29 G 42 MPH 4500 FT 15:1 / 7% 0.00" / 0.0" 0.13" / 1.9" 48 12 AM Fri Mar 21 2025 12F 9F / 78% WNW 30 G 43 MPH 4300 FT 15:1 / 7% 0.00" / 0.0" 0.13" / 1.9"