The situation
Issued at 9:14 am on the 24th of September by Russell Voice

COMPLEX LOW SET TO DELIVER –  SIGNIFICANT SNOW FOR PARTS OF CANTERBURY  ‘WARNINGS’ IN FORCE.

Good morning. It’s a mostly cloudy start across the region this morning, with isolated showers – more frequent closer to the Canterbury Foothills. Conditions will gradually start to deteriorate through the afternoon and by evening we can heavy rain and lowering snow levels across the region. We are starting to see slight changes in worst hit areas – keep up to date with our on going coverage on our ‘Live Weather Feed’.

Please source your town forecasts for specific details regarding rainfall totals & snowfall accumulations, there will be contrast across the region today & overnight.

Snow is set to fall about a number of our higher towns & villages from Monday evening; additionally snow will cause road disruptions & possible closures on Monday night for our higher roads & passes – high confidence.

Farmers can expect snow to low levels, possibly as low as 200m from Monday night, with snow and the associated wind chill set to provide challenges and stress for new born stock. 

We currently have a road snowfall warning & a heavy snow warning  in place with full details.

Keep up to date with our ‘Live News Feed’ for all the latest information; unmatched detail & intensity for the Canterbury region. 

YOUR OFFICIAL DAILY ‘HIGHS’ FOR MONDAY WILL BE ISSUED AROUND 6PM.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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A colder SW airflow will dominate our Monday, with showers and snow about the higher hills and ranges. It all starts to deteriorate as winds make the slight transition to the south mid afternoon and evening, with heavier more sustained falls setting in across the region. Heavy rain and snow is likely about Central & Northen parts of the region overnight, with slightly lesser falls in South Canterbury.

Tuesday morning our wintry system of weather gradually moves North and winds switch to the nor-west for many areas late in the day. Please note, heavy snow and rain is may still linger until late morning on Tuesday for Central & Northern parts of the Region.

Later stages of the week look mostly fine with high pressure set to dominate.  We may see frosts for many areas during later stages of next week.

As we move into the weekend our temperatures out East start to increase with milder foehn winds across the Canterbury Plains & Coast.

Keep up to date with our live news feed for all the latest details and developments. We currently have a road snowfall warning in place and a heavy snow watch for the Canterbury High Country & Foothills.

( Please source town pages for specific details).

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

TODAY: A mostly cloudy start, with a few scattered showers across the region. Fresh SW winds in exposed areas. More persistent rain sets in late afternoon or evening as conditions deteriorate across the region. Heavy rain and snow for parts of Mid & North Canterbury at night. Snow lowering to very low levels 250-300m. Fresh SW winds in the morning turn direct southerly and become strong to gale force about Banks Peninsula & the Kaikoura Coast. Bitterly cold conditions setting in at night. H: 6-10 L: 1-4

Road snowfall warning in place and a warning for heavy snow about the Canterbury High Country & Foothills. 

TUESDAY: Wintry showers, with sleety falls to low levels early on. Snow about the foothills and High Country above 300m. Fresh SW winds ease through the afternoon and gradually turn milder nor-west. H: 10-13 L: 1-5

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 5:00pm Monday evening.

Copyright NZ REGIONAL WEATHER UPDATES 2018

TOWN FORECASTS

Christchurch

Monday, 24 September
showers
Showers and periods of rain developing this afternoon. Fresh SW winds turning southerlies. Possible heavy falls from evening and overnight. Snow lowering to 400-500m about Banks Peninsula. Rainfall total: 10-15mm by 6am Tuesday.
High: 12°C Low: 2°C
Chance of any rain: 80%

Ashburton

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow possible about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 1°C
Chance of any rain: 85%

Rangiora

Monday, 24 September
rain
Occasional showers through the day. More persistent rain from evening, with heavy falls at night. Snow down to 400m from evening, with fresh snow about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 12°C Low: 2°C
Chance of any rain: 85%

Timaru

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow possible about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 2°C
Chance of any rain: 85%

Kaikoura

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 10°C Low: 5°C
Chance of any rain: 80%

Mt Lyford Village 600m

Monday, 24 September
snow
Scattered showers in the morning, with light snow above 1000m. Lowering to village level late at night, with heavy falls setting in. Snowfall accumulation: 7-12cm at village level by 6am Tuesday. Strong cold SW winds turn bitterly cold southerly around evening.
High: 8°C Low: -1°C
Chance of any rain: 100%

Hanmer Springs 370m

Monday, 24 September
snow
Occasional showers, more frequent from evening and turning sleety. Snow down to 400m from evening, with snow likely at night and overnight. Southerlies rising at night. Rainfall expected: 8-12mm. 1-4cm of snow possible about the village overnight.
High: 8°C Low: 1°C
Chance of any rain: 85%

Culverden 180m

Monday, 24 September
sleet
Occasional showers, more frequent from evening and sleety at night. Snow down to 400m from evening with fresh snow possible about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 8-12mm by midnight.
High: 9°C Low: 1°C
Chance of any rain: 85%

Cheviot

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 10°C Low: 3°C
Chance of any rain: 80%

Amberley

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 10°C Low: 3°C
Chance of any rain: 85%

Castle Hill Village 730m

Monday, 24 September
snow
Cloudy, with a few showers this morning. Wintry showers developing in the afternoon; more persistent from 4-5pm and turning to snow in the village at night. Heavy snow setting in at overnight, with significant snowfall accumulations likely at village level. Snowfall accumulation by 6am Tuesday: 8-14cm. Colder southerlies developing. Freezing Level: Lowering to 600m. (Porters Pass likely to close from evening)
High: 8°C Low: -1°C
Chance of any rain: 95%

Arthur’s Pass Village 740m

Monday, 24 September
snow
Sleety showers during the day, turning to snow from the lead up to evening as southerlies pick up. Potential for some heavy falls overnight. Snow accumulation potential: 4-8cm
High: 5°C Low: 0°C
Chance of any rain: 80%

Oxford 260m

Monday, 24 September
sleet
Occasional showers, more frequent from evening. Snow down to 400m from evening, becoming sleety for the village, with fresh snow possible about the Foothills overnight. Southerlies rising overnight. Rainfall expected: 8-12mm by midnight.
High: 8°C Low: 1°C
Chance of any rain: 85%

Darfield 190m

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, sleety falls with fresh snow possible about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 1°C
Chance of any rain: 80%

Rolleston

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 3°C
Chance of any rain: 85%

Methven 310m

Monday, 24 September
snow
Occasional showers. More persistent showers or rain from evening, with brief heavy falls at night. Snow down to 400m from evening, and then to village level at night. Southerlies rising to gale overnight. Rainfall expected: 10-15mm by midnight. Potential for 2-5cm to accumulate about the village.
High: 8°C Low: 0°C
Chance of any rain: 85%

Leeston

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 2°C
Chance of any rain: 85%

Akaroa

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow about Banks Peninsula overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 3°C
Chance of any rain: 85%

Geraldine

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow possible about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 2°C
Chance of any rain: 85%

Mt Cook Village 750m

Monday, 24 September
snow
Sleety showers developing in the morning, tending to snow from evening with a very cold southerly airflow. Potential for 2-4cm to accumulate about the village. Rainfall expected: 5-10mm
High: 7°C Low: -1°C
Chance of any rain: 75%

Lake Tekapo 720m

Monday, 24 September
snow
Occasional snow showers through the afternoon and evening with cold SW winds; turning more direct southerly from mid afternoon. Potential for 4-7cm to accumulate about the village. Clearing at night, with frosts developing. Rainfall expected: 4-7mm
High: 5°C Low: -1°C
Chance of any rain: 80%

Fairlie 300m

Monday, 24 September
snow
Scattered showers through the day, the odd sunny spell possible with a cooler southerly airflow. Snow down to 900m about the High Country in the morning. Conditions deteriorate from evening, with frequent showers, becoming heavy and likely turning to rain. Snow down to 400m later in the evening, then 300m overnight bringing snow showers. Southerlies rising to gale overnight. Rainfall expected: 10-20mm
High: 8°C Low: 0°C
Chance of any rain: 85%

Twizel 480m

Monday, 24 September
snow
Scattered showers through the day, the odd sunny spell possible with a cooler southerly airflow. Snow down to 900m about the ranges in the morning. Conditions deteriorate from evening, with frequent showers, turning to snow in the evening. Southerlies rising to gale overnight. Potential for 2-4cm to accumulate in the village.
High: 7°C Low: 0°C
Chance of any rain: 75%

Waimate

Monday, 24 September
rain
Showers and periods of rain at times. More persistent rain from mid afternoon, with heavy falls from evening. Snow down to 400m from evening, with fresh snow possible about the Foothills overnight. Southerlies rising to gale overnight. Rainfall expected: 10-20mm by midnight.
High: 9°C Low: 2°C
Chance of any rain: 85%

Porters Ski Area

Monday, 24 September
snow
Cloudy start, with a few snow showers at times. Heavy falls from late afternoon, with significant falls to the valley floor overnight. Cold SW winds turn more direct southerly. Freezing Level: Lowering to 800m at night. Snowfall accumulation: 25-35cm by 6am Tuesday.
High: 1°C Low: -6°C
Chance of any snow: 100%

Mt Hutt Base Area 1600m

Monday, 24 September
snow
Cloudy, with snow showers at times through the morning, to around 900m. Snow becoming heavy from mid-afternoon; lowering to the foothills by evening or tonight with significant falls setting in. Strong cold southerlies developing. Freezing Level: Lowering to 800m by 9pm. Snowfall accumulation: 25-40cm by 6am Tuesday.
High: 0°C Low: -7°C
Chance of any snow: 100%

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