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 00Z 03-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 07 PM Thu Oct 02 2025 S24G28 WSW13G21 SE03G08 50F 52F 57F 63F 61F 11800FT 0:1/- 0.00/0.00 0.0/ 0.0 2 08 PM Thu Oct 02 2025 S22G29 SW13G20 SE03G09 50F 52F 56F 61F 60F 11800FT 0:1/- 0.00/0.00 0.0/ 0.0 3 09 PM Thu Oct 02 2025 S24G30 SW15G24 SE03G10 50F 52F 56F 59F 59F 11800FT 0:1/- 0.00/0.00 0.0/ 0.0 4 10 PM Thu Oct 02 2025 S24G29 SW15G24 ESE03G09 50F 52F 56F 57F 59F 11900FT 0:1/- 0.00/0.00 0.0/ 0.0 5 11 PM Thu Oct 02 2025 SSW27G35 SW17G28 SE04G10 49F 52F 56F 57F 58F 11900FT 0:1/- 0.00/0.00 0.0/ 0.0 6 12 AM Fri Oct 03 2025 SSW28G37 SW19G30 ESE04G11 49F 51F 55F 57F 58F 11700FT 0:1/- 0.00/0.00 0.0/ 0.0 7 01 AM Fri Oct 03 2025 SSW32G39 SW20G32 SE03G11 47F 50F 54F 55F 57F 12000FT 0:1/- 0.00/0.00 0.0/ 0.0 8 02 AM Fri Oct 03 2025 SSW31G39 SW20G32 ESE03G12 46F 50F 54F 56F 56F 12100FT 0:1/- 0.00/0.00 0.0/ 0.0 9 03 AM Fri Oct 03 2025 S39G46 SW24G42 E04G14 47F 49F 53F 55F 55F 12100FT 0:1/- 0.00/0.00 0.0/ 0.0 10 04 AM Fri Oct 03 2025 SSW39G48 SW29G48 E03G15 45F 48F 52F 55F 55F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 11 05 AM Fri Oct 03 2025 SSW38G45 SW27G46 E03G14 45F 48F 53F 56F 54F 10900FT 0:1/- 0.00/0.00 0.0/ 0.0 12 06 AM Fri Oct 03 2025 SSW33G42 SW28G44 E03G14 44F 47F 52F 55F 53F 11000FT 0:1/- 0.00/0.00 0.0/ 0.0 13 07 AM Fri Oct 03 2025 SSW34G42 SW25G42 ESE04G14 46F 47F 52F 54F 53F 11200FT 0:1/- 0.00/0.00 0.0/ 0.0 14 08 AM Fri Oct 03 2025 SSW35G41 SW25G39 ESE03G13 44F 46F 53F 55F 53F 11000FT 0:1/- 0.00/0.00 0.0/ 0.0 15 09 AM Fri Oct 03 2025 SSW33G39 SW26G40 ESE03G14 43F 46F 53F 55F 54F 10700FT 0:1/- 0.00/0.00 0.0/ 0.0 16 10 AM Fri Oct 03 2025 SSW29G36 SW23G36 E04G13 45F 47F 54F 55F 56F 10700FT 0:1/- 0.00/0.00 0.0/ 0.0 17 11 AM Fri Oct 03 2025 SSW29G35 SW26G39 ENE04G13 43F 47F 53F 57F 58F 11100FT 0:1/- 0.00/0.00 0.0/ 0.0 18 12 PM Fri Oct 03 2025 SSW30G36 WSW25G39 NE04G13 44F 47F 54F 56F 60F 11200FT 0:1/- 0.00/0.00 0.0/ 0.0 19 01 PM Fri Oct 03 2025 SSW28G39 SW23G39 NE03G13 45F 49F 55F 59F 62F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 20 02 PM Fri Oct 03 2025 SSW26G32 WSW16G24 NE04G11 44F 46F 53F 57F 58F 12100FT 0:1/- 0.00/0.00 0.0/ 0.0 21 03 PM Fri Oct 03 2025 SSW24G31 WSW19G28 ENE04G12 45F 47F 55F 58F 61F 12100FT 0:1/- 0.00/0.00 0.0/ 0.0 22 04 PM Fri Oct 03 2025 SSW24G31 WSW19G29 ENE03G11 47F 49F 57F 60F 62F 12000FT 0:1/- 0.00/0.00 0.0/ 0.0 23 05 PM Fri Oct 03 2025 SSW23G28 WSW15G23 NNE03G10 45F 47F 55F 59F 61F 12100FT 0:1/- 0.00/0.00 0.0/ 0.0 24 06 PM Fri Oct 03 2025 SSW24G31 WSW18G26 NE03G10 46F 49F 55F 60F 62F 12000FT 0:1/- 0.00/0.00 0.0/ 0.0 25 07 PM Fri Oct 03 2025 SSW22G30 WSW16G24 E03G10 45F 48F 53F 59F 58F 11700FT 0:1/- 0.00/0.00 0.0/ 0.0 26 08 PM Fri Oct 03 2025 SSW21G27 WSW15G24 ESE03G10 46F 49F 53F 58F 56F 11400FT 0:1/- 0.00/0.00 0.0/ 0.0 27 09 PM Fri Oct 03 2025 SSW21G27 SW16G23 ESE04G10 45F 47F 50F 54F 56F 11200FT 0:1/- 0.00/0.00 0.0/ 0.0 28 10 PM Fri Oct 03 2025 SSW23G28 SW17G25 E03G10 43F 45F 49F 52F 55F 11600FT 0:1/- 0.00/0.00 0.0/ 0.0 29 11 PM Fri Oct 03 2025 SSW20G27 WSW14G21 E04G09 42F 43F 47F 50F 52F 11600FT 0:1/- 0.05/0.05 0.0/ 0.0 30 12 AM Sat Oct 04 2025 SW17G24 WSW09G17 ENE03G08 39F 43F 47F 50F 53F 10900FT 0:1/- 0.00/0.05 0.0/ 0.0 31 01 AM Sat Oct 04 2025 SSW17G21 WSW12G19 E03G08 38F 42F 46F 49F 51F 10800FT 0:1/- 0.00/0.05 0.0/ 0.0 32 02 AM Sat Oct 04 2025 S18G25 ENE13G21 ESE03G07 38F 42F 45F 48F 51F 10700FT 0:1/- 0.00/0.05 0.0/ 0.0 33 03 AM Sat Oct 04 2025 SSE21G27 SE13G24 ENE04G09 40F 42F 45F 49F 50F 10800FT 0:1/- 0.00/0.05 0.0/ 0.0 34 04 AM Sat Oct 04 2025 SSE19G25 ESE15G24 ESE03G08 39F 41F 45F 48F 49F 10900FT 0:1/- 0.00/0.05 0.0/ 0.0 35 05 AM Sat Oct 04 2025 N14G21 ENE13G20 ESE03G07 38F 44F 46F 49F 49F 10600FT 0:1/- 0.00/0.05 0.0/ 0.0 36 06 AM Sat Oct 04 2025 SW16G22 W14G23 E03G08 31F 34F 41F 43F 41F 10600FT 0:1/- 0.06/0.11 0.0/ 0.0 37 07 AM Sat Oct 04 2025 WSW14G19 W12G21 E03G08 29F 33F 38F 40F 40F 9400FT 0:1/- 0.00/0.11 0.0/ 0.0 38 08 AM Sat Oct 04 2025 SW16G21 WSW16G24 ESE03G09 29F 31F 35F 37F 38F 8800FT 0:1/- 0.08/0.19 0.0/ 0.0 39 09 AM Sat Oct 04 2025 SSW16G20 WSW15G22 ESE03G09 30F 32F 36F 38F 39F 9200FT 0:1/- 0.10/0.29 0.0/ 0.0 40 10 AM Sat Oct 04 2025 SW14G17 WSW11G19 NE03G08 30F 33F 36F 38F 41F 9200FT 0:1/- 0.00/0.29 0.0/ 0.0 41 11 AM Sat Oct 04 2025 SW12G15 WSW11G16 NE03G07 30F 34F 37F 40F 41F 9100FT 0:1/- 0.00/0.29 0.0/ 0.0 42 12 PM Sat Oct 04 2025 SW13G18 W11G18 WNW03G08 30F 35F 37F 40F 43F 9200FT 0:1/- 0.00/0.29 0.0/ 0.0 43 01 PM Sat Oct 04 2025 WSW13G18 W11G19 NNW03G09 29F 34F 37F 40F 42F 8900FT 0:1/- 0.02/0.31 0.0/ 0.0 44 02 PM Sat Oct 04 2025 W16G19 W14G23 NE03G09 29F 33F 38F 41F 42F 8900FT 0:1/- 0.05/0.36 0.0/ 0.0 45 03 PM Sat Oct 04 2025 W14G19 W13G23 N03G10 29F 33F 38F 41F 42F 9200FT 0:1/- 0.08/0.44 0.0/ 0.0 46 04 PM Sat Oct 04 2025 W16G21 W16G25 NE03G10 29F 32F 38F 41F 43F 9600FT 0:1/- 0.05/0.49 0.0/ 0.0 47 05 PM Sat Oct 04 2025 W15G19 W15G23 NW03G09 31F 34F 39F 41F 44F 9600FT 0:1/- 0.07/0.56 0.0/ 0.0 48 06 PM Sat Oct 04 2025 WSW15G19 W14G22 NE03G09 31F 34F 38F 41F 43F 9500FT 0:1/- 0.05/0.61 0.0/ 0.0