A high pressure system is to our north, while a cold front is moving over the Tasman Sea. The high will move to our northeast tomorrow. The airmass is mild, with snow only above about 1800 metres today, and 1700 metres tomorrow. It is only drizzle/light snow left.
The next cold front pushes through early Wednesday. This is much colder with a period of snow falling throughout alpine elevations.
Another weak front comes through on Friday.
How much snow...
Chance of 1 to 2 cm up high today and tomorrow.
3 to 8 cm Wednesday.
1 to 2 cm Friday.
DETAILED ALPINE FORECAST (above 1200 metres)
REST OF TODAY
Freeze level: 1800 metres.
Areas of drizzle.
TUESDAY
Freeze level: 1700 metres.
Areas of drizzle, easing later in the day.
WEDNESDAY
Freeze level: Lowering below 1200 metres.
A period of snow.
THURSDAY
Clear skies, cold.
FRIDAY
Freeze level: 1500 metres.
Snow showers developing later.
OUTLOOK
I feel a low will form over the Tasman Sea, with cold air over us in a southeasterly airflow. This should bring persistent snow for a few days - but too early for specifics.
Courtesy of Jane's Weather, www.janesweather.com