The situation
Issued at 6:37 am on the 22nd of December by Leighton Thomas

AFTERNOON THUNDERSTORMS FOR INLAND AREAS – COLD SOUTHERLY CHANGE LATER TODAY (WIDESPREAD RAIN.)

Good morning. It’s a cooler start across the region after yesterday’s southerly change. We do have areas of low cloud and fog but expect mostly fine conditions this morning. Afternoon ‘heating’ will trigger thunderstorms and heavy showers about Inland Canterbury after 2pm, before colder southerlies and more widespread rain moves north late afternoon & evening.

Source your town forecast for more information. We currently have a thunderstorm ‘Watch’ in place with full details.

Our Christmas Day forecast & New Year’s Eve forecast is running on our ‘Live Weather Feed’ – additionally all town pages now cater for Christmas & Boxing Day with specific details.

Source your town forecast for specific details and keep up to date with our ‘Live Weather Feed’ through the day for developments and updates.

YOUR OFFICIAL DAILY ‘HIGHS’ FOR SATURDAY WILL BE ISSUED AT 6PM.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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A cold disturbed SW change will move north this afternoon & evening bringing widespread rain, thunderstorms and snow about the ranges. This front will then ease back late at night with the last of the showers clearing Sunday morning.

A ridge of high pressure moves in on Monday and will bring a more stable and settled period Christmas Day.  Bar one cooler southerly change on Boxing Day the rest of December will be mostly fine and settled under high pressure.

Please note a low from the Tasman will bring heavy rain and strong winds to the North Island early next week; the South Island looks set to largely escape bar the Tasman Region.

Please source town pages for specific details and keep up to date with our ‘Live Weather Feed’ for all the very latest information.

GENERAL SUMMARY FOR CANTERBURY – PLEASE CHECK YOUR TOWN FORECAST FOR MORE SPECIFIC INFORMATION.

TODAY: A mostly fine start bar areas of low cloud and fog.  Afternoon thunderstorms for inland areas, closer to the foothills. Southerly change into the afternoon and evening with widespread heavy rain and isolated thunderstorms and snow about the ranges to 1300m.  A much colder evening and night on the day. Conditions easing back overnight. H: 16-19 L: 6-8

SUNDAY: Early showers clearing north of Christchurch for a mostly fine afternoon. Fresh southerlies ease. Cooler temperatures. H: 13-16 L: 7-10.

MONDAY: Sunny skies, with light winds across the region under high pressure. Warmer inland away from onshore easterlies. H: 22-26 L: 9-11

Source our town pages for 1-7 day forecasts for 27 towns across Canterbury – no computer-generated content and specific information for each town.

The ‘Situation’ will be reviewed & updated at or before 6pm Saturday evening.

TOWN FORECASTS

Christchurch

Saturday, 22 December
thunderstorms
A mostly fine & pleasant day morning and afternoon. Sunny with a few cloudy periods. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm (moderate.) Rain easing back overnight. Becoming colder in the evening. Rainfall total: 10-15mm by midnight.
High: 18°C Low: 7°C
Chance of any rain: 85%

Ashburton

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls and snow lowering to 1300m about the ranges. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 17°C Low: 8°C
Chance of any rain: 85%

Rangiora

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls and snow lowering to 1300m about the ranges. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 18°C Low: 8°C
Chance of any rain: 80%

Timaru

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 10-15mm by midnight.
High: 17°C Low: 7°C
Chance of any rain: 80%

Kaikoura

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 7-12mm by midnight.
High: 18°C Low: 10°C
Chance of any rain: 75%

Mt Lyford Village 600m

Saturday, 22 December
sunny-showers
A mixed morning, with cloudy periods and sunny spells. Late afternoon thunderstorms possible, with heavy rain developing from evening Snow lowering to 1300m this evening. Rainfall total by midnight: 15-25mm
High: 17°C Low: 5°C
Chance of any rain: 90%

Hanmer Springs 370m

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 8-12mm by midnight.
High: 19°C Low: 8°C
Chance of any rain: 80%

Culverden 180m

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 8-12mm by midnight.
High: 18°C Low: 8°C
Chance of any rain: 80%

Cheviot

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 7-12mm by midnight.
High: 18°C Low: 11°C
Chance of any rain: 75%

Amberley

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 7-12mm by midnight.
High: 19°C Low: 10°C
Chance of any rain: 80%

Arthur’s Pass Village 740m

Saturday, 22 December
thunderstorms
A fine and cool morning. Mid afternoon thunderstorms developing, with heavy rain and hail becoming widespread in the evening. Snow lowering to 1300m this evening. Rainfall total by midnight: 15-25mm
High: 16°C Low: 6°C
Chance of any rain: 80%

Castle Hill Village 730m

Saturday, 22 December
thunderstorms
A fine and cool morning. Mid afternoon thunderstorms developing, with heavy rain and hail becoming widespread in the evening. Snow lowering to 1300m this evening. Rainfall total by midnight: 15-25mm
High: 18°C Low: 5°C
Chance of any rain: 80%

Oxford 260m

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 8-12mm by midnight.
High: 19°C Low: 9°C
Chance of any rain: 80%

Darfield 190m

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls and snow lowering to 1300m about the ranges. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 18°C Low: 7°C
Chance of any rain: 80%

Rolleston

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls and snow lowering to 1300m about the ranges. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 18°C Low: 8°C
Chance of any rain: 80%

Methven 310m

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls and snow lowering to 1300m about the ranges. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 16°C Low: 8°C
Chance of any rain: 85%

Leeston

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 18°C Low: 8°C
Chance of any rain: 80%

Akaroa

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 7-12mm by midnight.
High: 18°C Low: 9°C
Chance of any rain: 80%

Geraldine

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls and snow lowering to 1300m about the ranges. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 17°C Low: 8°C
Chance of any rain: 85%

Mt Cook Village 750m

Saturday, 22 December
sunny-showers
Sunny spells and cloudy periods. A few showers in the mix from afternoon, chance heavy. Winds mostly light in nature. Rainfall expected: 4-8mm
High: 18°C Low: 8°C
Chance of any rain: 70%

Lake Tekapo 720m

Saturday, 22 December
sunny-showers
Sunny spells this morning. Afternoon thunderstorms possible with more widespread showers and periods of rain setting in. Southerlies freshening. Snow above 1400m about the ranges. Conditions easing back late tonight.
High: 18°C Low: 5°C
Chance of any rain: 75%

Fairlie 300m

Saturday, 22 December
thunderstorms
A mostly fine morning and early afternoon. Thunderstorms possible from late afternoon & through the evening. Rain at times, with some heavy falls and snow lowering to 1300m about the ranges. Southerlies freshening. Rainfall total: 10-20mm, possibly more depending on thunderstorm activity.
High: 17°C Low: 6°C
Chance of any rain: 90%

Twizel 480m

Saturday, 22 December
sunny-showers
Sunny spells this morning. Afternoon thunderstorms possible with more widespread showers and periods of rain setting in. Southerlies freshening. Snow above 1400m about the ranges. Conditions easing back late tonight.
High: 19°C Low: 6°C
Chance of any rain: 80%

Waimate

Saturday, 22 December
sunny-showers
A mostly fine day in the township. Late afternoon or evening southerly change with rain, some heavy falls and thunder and hail risk until around 8-9pm. Rain easing back overnight. Becoming colder in the evening. Rainfall total: 10-15mm by midnight.
High: 17°C Low: 8°C
Chance of any rain: 80%

Porters Ski Area

Saturday, 22 December
snow
A fine start. Afternoon thunderstorms developing turning to rain then snow by evening. Southerlies developing. Freezing Level: Lowering to 1400m this evening.
High: 8°C Low: 0°C
Chance of any snow: 65%

Mt Hutt Base Area 1600m

Saturday, 22 December
snow
A fine start. Afternoon thunderstorms developing turning to rain then snow by evening. Southerlies developing. Freezing Level: Lowering to 1400m this evening.
High: 7°C Low: -1°C
Chance of any snow: 90%

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