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 02-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 Thu Oct 02 2025 SSW23G29 WSW20G30 NNE03G10 48F 51F 56F 60F 63F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 2 02 PM Thu Oct 02 2025 SSW21G24 WSW18G26 ENE03G10 49F 52F 57F 60F 63F 11300FT 0:1/- 0.00/0.00 0.0/ 0.0 3 03 PM Thu Oct 02 2025 SW19G24 WSW14G22 ENE03G08 49F 52F 58F 61F 64F 11500FT 0:1/- 0.00/0.00 0.0/ 0.0 4 04 PM Thu Oct 02 2025 SSW18G24 WSW12G21 ENE03G09 51F 53F 59F 62F 65F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 5 05 PM Thu Oct 02 2025 SSW20G25 SW13G20 SSW02G09 50F 53F 58F 63F 65F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 6 06 PM Thu Oct 02 2025 S22G27 WSW14G20 E03G08 51F 52F 57F 63F 64F 11700FT 0:1/- 0.00/0.00 0.0/ 0.0 7 07 PM Thu Oct 02 2025 S20G25 SW14G20 SE03G08 50F 51F 56F 61F 61F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 8 08 PM Thu Oct 02 2025 S22G28 SW14G22 SE03G08 49F 51F 55F 60F 59F 11400FT 0:1/- 0.00/0.00 0.0/ 0.0 9 09 PM Thu Oct 02 2025 S24G30 SW15G23 ESE04G10 50F 51F 55F 58F 58F 11800FT 0:1/- 0.00/0.00 0.0/ 0.0 10 10 PM Thu Oct 02 2025 S24G30 SSW15G24 SE03G09 49F 50F 56F 58F 58F 11900FT 0:1/- 0.00/0.00 0.0/ 0.0 11 11 PM Thu Oct 02 2025 S27G33 SW16G26 SE04G09 50F 51F 55F 57F 58F 12000FT 0:1/- 0.00/0.00 0.0/ 0.0 12 12 AM Fri Oct 03 2025 SSW27G33 SW18G28 E03G09 49F 51F 54F 56F 57F 12100FT 0:1/- 0.00/0.00 0.0/ 0.0 13 01 AM Fri Oct 03 2025 SSW29G34 SW18G32 SE03G11 47F 50F 53F 55F 58F 12500FT 0:1/- 0.00/0.00 0.0/ 0.0 14 02 AM Fri Oct 03 2025 SSW30G37 SW21G32 SE03G10 47F 50F 53F 55F 56F 12600FT 0:1/- 0.00/0.00 0.0/ 0.0 15 03 AM Fri Oct 03 2025 SSW34G43 SW24G40 ESE04G12 46F 49F 52F 55F 55F 12300FT 0:1/- 0.00/0.00 0.0/ 0.0 16 04 AM Fri Oct 03 2025 SSW34G43 SW26G43 ESE03G14 46F 48F 52F 54F 55F 12300FT 0:1/- 0.00/0.00 0.0/ 0.0 17 05 AM Fri Oct 03 2025 S38G46 SW30G45 E03G14 46F 48F 52F 55F 54F 12100FT 0:1/- 0.00/0.00 0.0/ 0.0 18 06 AM Fri Oct 03 2025 SSW36G43 SW29G46 ESE03G16 45F 47F 53F 56F 55F 12200FT 0:1/- 0.00/0.00 0.0/ 0.0 19 07 AM Fri Oct 03 2025 SSW35G43 SW28G46 SE04G14 46F 47F 54F 56F 53F 11900FT 0:1/- 0.00/0.00 0.0/ 0.0 20 08 AM Fri Oct 03 2025 SSW35G42 SW26G41 E04G14 45F 47F 52F 54F 53F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 21 09 AM Fri Oct 03 2025 SSW33G41 SW26G41 ESE04G14 45F 48F 52F 55F 56F 11400FT 0:1/- 0.00/0.00 0.0/ 0.0 22 10 AM Fri Oct 03 2025 SSW31G39 SW28G40 ENE05G14 45F 48F 54F 57F 58F 11200FT 0:1/- 0.00/0.00 0.0/ 0.0 23 11 AM Fri Oct 03 2025 SSW32G40 SW27G40 ENE04G14 44F 47F 54F 58F 59F 11100FT 0:1/- 0.00/0.00 0.0/ 0.0 24 12 PM Fri Oct 03 2025 SSW30G38 SW27G42 NNE04G13 45F 47F 55F 58F 61F 11500FT 0:1/- 0.00/0.00 0.0/ 0.0 25 01 PM Fri Oct 03 2025 SSW32G41 WSW26G39 NE03G13 43F 47F 55F 58F 60F 11800FT 0:1/- 0.00/0.00 0.0/ 0.0 26 02 PM Fri Oct 03 2025 SSW30G35 WSW25G38 ENE04G14 46F 48F 56F 59F 62F 12000FT 0:1/- 0.00/0.00 0.0/ 0.0 27 03 PM Fri Oct 03 2025 SSW25G34 WSW21G34 ENE04G12 46F 48F 54F 57F 60F 11800FT 0:1/- 0.00/0.00 0.0/ 0.0 28 04 PM Fri Oct 03 2025 SSW24G33 WSW20G32 NE03G12 46F 48F 55F 58F 60F 11500FT 0:1/- 0.00/0.00 0.0/ 0.0 29 05 PM Fri Oct 03 2025 SSW28G33 WSW21G33 E03G12 45F 49F 57F 61F 63F 11200FT 0:1/- 0.00/0.00 0.0/ 0.0 30 06 PM Fri Oct 03 2025 SSW22G30 WSW18G27 ENE03G10 46F 48F 54F 60F 61F 11300FT 0:1/- 0.00/0.00 0.0/ 0.0 31 07 PM Fri Oct 03 2025 SSW20G27 WSW15G24 ENE03G10 44F 47F 52F 57F 57F 11100FT 0:1/- 0.00/0.00 0.0/ 0.0 32 08 PM Fri Oct 03 2025 SSW21G28 SW15G23 E04G09 44F 47F 51F 57F 55F 11000FT 0:1/- 0.00/0.00 0.0/ 0.0 33 09 PM Fri Oct 03 2025 SSW22G26 WSW15G20 E03G09 43F 47F 51F 54F 55F 10900FT 0:1/- 0.00/0.00 0.0/ 0.0 34 10 PM Fri Oct 03 2025 SW16G20 WSW11G17 E04G07 42F 44F 49F 53F 55F 10800FT 0:1/- 0.00/0.00 0.0/ 0.0 35 11 PM Fri Oct 03 2025 WSW15G20 NW09G14 ESE04G07 40F 42F 48F 51F 53F 11000FT 0:1/- 0.00/0.00 0.0/ 0.0 36 12 AM Sat Oct 04 2025 WSW14G17 WNW07G12 ENE03G06 39F 42F 47F 51F 52F 10800FT 0:1/- 0.00/0.00 0.0/ 0.0 37 01 AM Sat Oct 04 2025 SSW13G16 WNW08G13 ESE03G06 37F 40F 45F 48F 49F 10700FT 0:1/- 0.00/0.00 0.0/ 0.0 38 02 AM Sat Oct 04 2025 S15G19 NW09G16 ESE03G06 37F 40F 44F 46F 47F 10600FT 0:1/- 0.00/0.00 0.0/ 0.0 39 03 AM Sat Oct 04 2025 SW14G19 WNW11G19 ENE04G07 35F 38F 42F 46F 46F 10900FT 0:1/- 0.00/0.00 0.0/ 0.0 40 04 AM Sat Oct 04 2025 S15G21 ESE11G19 ESE03G08 34F 37F 41F 44F 43F 10300FT 0:1/- 0.00/0.00 0.0/ 0.0 41 05 AM Sat Oct 04 2025 SSW12G16 WNW09G13 SE03G06 35F 38F 41F 43F 43F 10200FT 0:1/- 0.00/0.00 0.0/ 0.0 42 06 AM Sat Oct 04 2025 WSW13G16 W10G14 E03G08 33F 36F 39F 42F 42F 10200FT 0:1/- 0.03/0.03 0.0/ 0.0 43 07 AM Sat Oct 04 2025 SW09G13 N06G11 E03G06 31F 34F 35F 38F 41F 9500FT 0:1/- 0.17/0.20 0.0/ 0.0 44 08 AM Sat Oct 04 2025 NNE05G08 NW07G10 ENE03G05 29F 32F 35F 36F 39F 8700FT 0:1/- 0.19/0.39 0.0/ 0.0 45 09 AM Sat Oct 04 2025 NW09G12 WNW11G19 SSE03G07 29F 32F 35F 36F 38F 8700FT 0:1/- 0.14/0.53 0.0/ 0.0 46 10 AM Sat Oct 04 2025 WNW10G13 W12G20 NNE03G09 28F 30F 34F 36F 37F 8800FT 0:1/- 0.15/0.68 0.0/ 0.0 47 11 AM Sat Oct 04 2025 W13G15 W13G22 NE03G10 27F 31F 36F 39F 39F 8600FT 3:1/33% 0.11/0.79 0.3/ 0.3 48 12 PM Sat Oct 04 2025 WSW15G20 W16G23 N03G10 28F 32F 36F 40F 41F 8700FT 0:1/- 0.05/0.84 0.0/ 0.3