The latest as of 2:30 a.m.

• Slushy on most of the main roads; arterials and residential streets more treacherous

• Around 28,000 customers without power across region. (Check your utility)

• Both directions of I-90 are open at Snoqualmie pass. Chains are required unless your vehicle has 4WD or AWD. The pass was closed Monday intermittently for avalanche control and to clear collisions. (Check Pass Reports)

• Hundreds of schools have posted closures or delays for Tuesday in anticipation of snowy and icy conditions, including Tacoma and Seattle School Districts, which are both two hours late. (Check your school)

• Most flights scheduled to leave Sea-Tac Airport Tuesday are scheduled on-time, but icy conditions and backup from Monday's canceled flights could cause delays (Check your flight)

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A Winter Storm Warning remains in effect until 10 p.m. for the central Puget Sound region Monday as lowland areas saw significant accumulation during the day.

Few schools in Western Washington decided to stay open Monday. Around 100,000 power customers in Western Washington lost power. Dozens of flights at Sea-Tac Airport were canceled due to icing concerns.

Lowland snow continued to fall Monday morning, but the steady snow tapered to rain/snow showers in the afternoon and evening. There was only minor additional accumulation.

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Snow accumulations (Storm totals as of 9:30 p.m. Monday)

• Graham: 14 inches

• Bonney Lake: 13 inches

• Snoqualmie Ridge 12 inches

• SeaTac: 7 inches

• Chehalis: 7 inches

• Kent: 4.5 inches

• Brinnon: 6 inches

• Renton: 6 inches

• Port Orchard: 5.5 inches

• Mercer Island: 4 inches

WATCH: Viewer video: Snow in Lynden | Lynden snow and Wind

WATCH: Snow a factor on the roads

The good news is the bulk of the accumulating snow is done, although some weak convergence may continue to give the Central Sound some additional light snow.

The bad news is the roads will be left wet overnight and are likely to freeze, leading to an icy Tuesday morning commute.

Pass conditions: Make sure you check pass conditions before venturing into the mountains. Both directions of Interstate 90 over Snoqualmie Pass were closed for most of the morning and have since reopened. The Cascades will likely see an additional 3-6 inches overnight. Traction requirements vary at the other passes, with some requiring chains. Check: Pass Reports

The precipitation will dry out Tuesday, giving way to more rain Wednesday.

KING 5's Ben Dery, Rich Marriott, and Jim Guy contributed to this report.