SnowBrains Forecast: Sunday-Tuesday New Zealand Storm, Then Mostly Dry - SnowBrains

"A focused Sunday-through-Tuesday storm brings the only meaningful snowfall window, with the best accumulation in Canterbury and lighter spillover elsewhere. Guidance supports a regional high-elevation refresh around 20 cm-30 cm at the top end, while most other fields stay in a modest 1 cm-6 cm range. Expect mostly dense to moderate snow quality during the core burst."

"For Sunday afternoon through Tuesday, the individual guidance is converging on timing, with snow expanding Sunday, peaking Sunday night, and tapering through Monday night into early Tuesday. Intensity agreement is strongest in Canterbury, where Mt Hutt, Porters, and Mount Dobson consistently carry the core of the storm, while North Island volcanoes and Queenstown-area fields remain lighter."

"Wind guidance also converges on a Sunday night to Monday peak, with exposed sustained speeds near 30 to 60 km/h and frequent gusts from 70 to 110 km/h, locally higher near the central North Island volcanoes. Snow quality in the main wave trends dense to moderate rather than fluffy, with storm SLRs mostly 7-12 and occasional dips to 5-7 during warmer periods."

A focused storm system spanning Sunday through Tuesday delivers the season's primary snowfall, with Canterbury's high-elevation fields receiving the most accumulation at 20-30 cm, while other regions see modest 1-6 cm falls. Snow expands Sunday, peaks Sunday night, and tapers through Monday into early Tuesday. Wind peaks Sunday night to Monday with sustained speeds of 30-60 km/h and gusts reaching 70-110 km/h. Snow levels range from 900-1,700 meters with brief excursions to 1,900 meters. Snow quality remains dense to moderate with storm snow-to-liquid ratios of 7-12, occasionally dropping to 5-7 during warmer periods. Most fields are currently closed, making this primarily a snowpack-building event rather than an immediate access opportunity.

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