SNOWBASIN 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 AT UTAH.EDU OGD:OGDEN PEAK (9570 FT); SB2:TOP STRAWBERRY (9202 FT) SBBWK:BOARDWALK (7993 FT); SNI:MIDDLE BOWL (7402 FT); SBE:BASE (6316 FT) WINDS, TEMPERATURES, SNOW-TO-LIQUID RATIO (SLR) AND SNOW WATER CONTENT (H2O) USE HRRR-BASED MACHINE LEARNING HEIGHT OF WET BULB ZERO LEVEL (WBZ) DERIVED FROM HRRR PROFILE OVER KOGD 1H WATER EQUIVALENT PRECIPITATION (1HP) AND TOTAL WATER EQUIVALENT PRECIPITATION (TP) FROM NEAREST HRRR GRIDPOINT TO SBBWK 1H SNOW (1HS) AND TOTAL SNOW (TS) USE HOURLY SLR APPLIED TO 1HP BASED ON 18Z 10-OCT-2025 INITIALIZED HRRR WINDS (MPH) TEMPERATURES (F) SLR/H2O 1HP/TP (in) 1HS/TS (in) FHR VALID MOUNTAIN TIME OGP SB2 SBBWK OGP SB2 SBBWK SNI SBE WBZ(ftMSL) SBBWK SBBWK SBBWK 1 01 PM Fri Oct 10 2025 SSW19G27 WSW17G28 N03G08 47F 49F 55F 58F 60F 12600FT 0:1/- 0.00/0.00 0.0/ 0.0 2 02 PM Fri Oct 10 2025 SSW20G23 WSW20G29 E03G09 48F 49F 56F 59F 62F 12600FT 0:1/- 0.00/0.00 0.0/ 0.0 3 03 PM Fri Oct 10 2025 SSW18G25 WSW20G30 ENE03G09 49F 49F 55F 59F 63F 12700FT 0:1/- 0.00/0.00 0.0/ 0.0 4 04 PM Fri Oct 10 2025 SSW18G23 WSW18G29 ENE03G09 49F 49F 55F 58F 62F 12600FT 0:1/- 0.00/0.00 0.0/ 0.0 5 05 PM Fri Oct 10 2025 S21G26 SW20G29 S03G11 48F 50F 55F 59F 63F 12700FT 0:1/- 0.00/0.00 0.0/ 0.0 6 06 PM Fri Oct 10 2025 S21G27 WSW19G29 ENE03G09 49F 50F 54F 59F 62F 12800FT 0:1/- 0.00/0.00 0.0/ 0.0 7 07 PM Fri Oct 10 2025 S21G26 SW17G25 SSE03G09 49F 48F 54F 58F 59F 12800FT 0:1/- 0.00/0.00 0.0/ 0.0 8 08 PM Fri Oct 10 2025 S19G27 SW17G27 SSE03G10 47F 48F 53F 57F 57F 12400FT 0:1/- 0.00/0.00 0.0/ 0.0 9 09 PM Fri Oct 10 2025 SSW20G26 SW19G29 ESE04G10 48F 48F 52F 55F 56F 12800FT 0:1/- 0.00/0.00 0.0/ 0.0 10 10 PM Fri Oct 10 2025 SSW20G26 SW16G27 SE03G10 47F 47F 53F 55F 56F 12700FT 0:1/- 0.00/0.00 0.0/ 0.0 11 11 PM Fri Oct 10 2025 SSW25G30 SW17G28 SE04G10 47F 47F 53F 56F 56F 12800FT 0:1/- 0.00/0.00 0.0/ 0.0 12 12 AM Sat Oct 11 2025 SSW25G32 SW20G31 ENE04G11 46F 46F 53F 54F 56F 12500FT 0:1/- 0.00/0.00 0.0/ 0.0 13 01 AM Sat Oct 11 2025 SSW26G32 SW19G33 SSE04G12 45F 47F 53F 55F 56F 12600FT 0:1/- 0.00/0.00 0.0/ 0.0 14 02 AM Sat Oct 11 2025 SSW25G31 SW20G31 ESE03G11 45F 46F 52F 54F 55F 12300FT 0:1/- 0.00/0.00 0.0/ 0.0 15 03 AM Sat Oct 11 2025 SSW25G32 SW18G32 SE03G12 44F 45F 51F 54F 55F 12300FT 0:1/- 0.00/0.00 0.0/ 0.0 16 04 AM Sat Oct 11 2025 SSW23G28 WSW20G32 SE03G12 43F 45F 50F 53F 55F 12600FT 0:1/- 0.00/0.00 0.0/ 0.0 17 05 AM Sat Oct 11 2025 SSW21G26 SW19G30 ESE03G11 44F 44F 49F 52F 53F 12600FT 0:1/- 0.00/0.00 0.0/ 0.0 18 06 AM Sat Oct 11 2025 SSW22G29 WSW19G31 ENE04G12 44F 43F 49F 52F 53F 12400FT 0:1/- 0.00/0.00 0.0/ 0.0 19 07 AM Sat Oct 11 2025 SSW22G29 SW19G32 ESE03G12 43F 43F 48F 51F 52F 12300FT 0:1/- 0.00/0.00 0.0/ 0.0 20 08 AM Sat Oct 11 2025 SSW22G27 WSW19G32 E04G12 42F 43F 48F 50F 53F 12300FT 0:1/- 0.00/0.00 0.0/ 0.0 21 09 AM Sat Oct 11 2025 SSW23G28 SW22G35 E04G12 42F 43F 49F 51F 54F 11900FT 0:1/- 0.00/0.00 0.0/ 0.0 22 10 AM Sat Oct 11 2025 SSW21G29 SW24G34 ENE05G13 42F 43F 49F 51F 56F 11700FT 0:1/- 0.00/0.00 0.0/ 0.0 23 11 AM Sat Oct 11 2025 SSW23G31 WSW25G37 E04G13 41F 44F 48F 52F 56F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 24 12 PM Sat Oct 11 2025 SSW25G30 WSW27G41 NNW04G14 41F 44F 49F 53F 54F 11800FT 0:1/- 0.15/0.15 0.0/ 0.0 25 01 PM Sat Oct 11 2025 SSW28G35 WSW25G40 NNE03G13 41F 42F 47F 51F 53F 11600FT 0:1/- 0.56/0.71 0.0/ 0.0 26 02 PM Sat Oct 11 2025 SW28G35 WSW27G42 E04G14 41F 45F 49F 53F 57F 11400FT 0:1/- 0.28/0.99 0.0/ 0.0 27 03 PM Sat Oct 11 2025 SSW25G33 WSW24G40 ENE04G14 41F 43F 49F 52F 57F 11700FT 0:1/- 0.00/0.99 0.0/ 0.0 28 04 PM Sat Oct 11 2025 SSW29G38 WSW25G41 ENE04G16 39F 43F 49F 51F 56F 11700FT 0:1/- 0.01/1.00 0.0/ 0.0 29 05 PM Sat Oct 11 2025 SSW24G30 WSW19G32 NE04G13 33F 39F 47F 50F 52F 11800FT 0:1/- 0.00/1.00 0.0/ 0.0 30 06 PM Sat Oct 11 2025 W18G27 W19G31 NE03G11 31F 35F 42F 44F 46F 11100FT 0:1/- 0.05/1.05 0.0/ 0.0 31 07 PM Sat Oct 11 2025 W18G23 WNW15G29 NNW04G11 26F 31F 41F 42F 39F 7900FT 8:1/12% 0.02/1.07 0.2/ 0.2 32 08 PM Sat Oct 11 2025 W18G25 WNW16G29 ENE04G11 26F 28F 33F 35F 36F 7400FT 8:1/12% 0.10/1.17 0.8/ 1.0 33 09 PM Sat Oct 11 2025 WSW23G31 W17G29 NNE04G12 23F 28F 32F 34F 37F 7100FT 9:1/11% 0.07/1.24 0.6/ 1.6 34 10 PM Sat Oct 11 2025 WNW16G22 WNW14G26 ENE03G10 23F 27F 32F 34F 37F 6800FT 11:1/ 9% 0.01/1.25 0.1/ 1.7 35 11 PM Sat Oct 11 2025 WNW18G25 WNW13G23 E03G09 23F 26F 29F 34F 37F 6300FT 10:1/10% 0.00/1.25 0.0/ 1.7 36 12 AM Sun Oct 12 2025 W19G25 WNW13G24 NNE04G09 22F 25F 29F 33F 36F 6400FT 11:1/ 9% 0.00/1.25 0.0/ 1.7 37 01 AM Sun Oct 12 2025 WSW20G24 W14G24 ESE03G10 20F 25F 29F 33F 35F 6400FT 11:1/ 9% 0.00/1.25 0.0/ 1.7 38 02 AM Sun Oct 12 2025 W18G22 W13G24 E03G09 20F 23F 28F 32F 34F 6400FT 12:1/ 8% 0.00/1.25 0.0/ 1.7 39 03 AM Sun Oct 12 2025 WSW17G22 W14G23 SSE03G09 19F 22F 26F 30F 33F 6300FT 11:1/ 9% 0.04/1.29 0.4/ 2.1 40 04 AM Sun Oct 12 2025 WSW17G22 W15G25 ESE03G09 21F 24F 29F 32F 33F 7000FT 11:1/ 9% 0.01/1.30 0.1/ 2.2 41 05 AM Sun Oct 12 2025 W17G22 W14G23 E03G09 21F 24F 28F 31F 34F 6700FT 12:1/ 8% 0.00/1.30 0.0/ 2.2 42 06 AM Sun Oct 12 2025 W16G21 W14G25 ESE03G09 21F 24F 28F 30F 33F 6400FT 13:1/ 8% 0.00/1.30 0.0/ 2.2 43 07 AM Sun Oct 12 2025 W17G21 W14G25 E03G09 20F 24F 27F 30F 31F 6100FT 12:1/ 8% 0.00/1.30 0.0/ 2.2 44 08 AM Sun Oct 12 2025 W17G22 W13G22 E03G09 20F 23F 28F 30F 30F 6100FT 12:1/ 8% 0.00/1.30 0.0/ 2.2 45 09 AM Sun Oct 12 2025 W16G20 W14G24 ESE03G09 21F 24F 29F 30F 32F 6100FT 12:1/ 8% 0.00/1.30 0.0/ 2.2 46 10 AM Sun Oct 12 2025 W15G18 W14G20 NNW03G08 21F 25F 29F 30F 33F 6200FT 12:1/ 8% 0.00/1.30 0.0/ 2.2 47 11 AM Sun Oct 12 2025 W12G15 W12G19 NE03G08 22F 26F 29F 31F 35F 6300FT 13:1/ 8% 0.00/1.30 0.0/ 2.2 48 12 PM Sun Oct 12 2025 WSW12G16 W09G17 WNW03G08 23F 28F 30F 33F 35F 6400FT 13:1/ 8% 0.00/1.30 0.0/ 2.2