Dynamic Weather On World Meteorology Day
MetService are forecasting a duo of southerly fronts this week, making for colder and wetter conditions – some active weather to mark World Meteorology Day (Monday 23 March).
Monday and Tuesday see a strong southerly change travel up the country. Brief respite on Wednesday and early Thursday precedes a second front, perpetuating the dip in temperatures and some rain.
Today, the front is being forecast as a “southerly buster” as it travels up the South Island east coast. A colloquial term frequently used by Southern Hemisphere meteorologists, a buster refers to a dramatic southerly change, abruptly delivering very strong winds, sharp temperature drops and a burst of rain. It’s also not uncommon for a few rumbles of thunder.
MetService meteorologist Tui McInnes explains: “Today’s buster up the South Island will be a rather significant change in the weather, especially for those around the coast. We are expecting strong wind gusts of up to 90 km/h in exposed locations.”
The cooler temperatures get a short break mid-week as high-pressure settles things for a time. However, the second front which hits on Thursday will again bring cold temperatures, wet weather and strong winds.
“We are in autumn,” reminds McInnes, “and that means the time of year for changeable weather, so keep up to date with the forecast on metservice.com.”
Understanding our Severe Weather Watches and Warnings
Outlooks are about looking ahead:
- To provide advanced information on possible future Watches and/or Warnings
- Issued routinely once or twice a day
- Recommendation: Plan
are about being alert:
- When severe weather is possible, but not sufficiently imminent or certain for a warning to be issued
- Typically issued 1 - 3 days in advance of potential severe weather.
- During a Watch: Stay alert
are about taking action:
- When severe weather is imminent or is occurring
- Typically issued 1 - 3 days in advance of potential severe weather
- In the event of an Orange Warning: Take action
are about taking immediate action:
- When extremely severe weather is imminent or is occurring
- Issued when an event is expected to be among the worst that we get – it will have significant impact and it is possible that a lot of people will be affected
- In the event of a Red Warning: Act now!