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TCWC Wellington Activity Report. Presented to the 4th Tropical Cyclone RSMCs Technical Coordination Meeting by Rod Stainer . New Zealand’s Responsibities.

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tcwc wellington activity report

TCWC WellingtonActivity Report

Presented to the 4th Tropical Cyclone RSMCs Technical Coordination Meeting

by Rod Stainer

new zealand s responsibities
New Zealand’s Responsibities
  • Wellington is an RSMC with geographical specialisation, but is designated as a tropical cyclone warning centre for the subtropical region of the South Pacific south of 25 south.
  • Wellington provides SIGMETs for a portion of the Pacific Ocean through to 5 south - FIR modified in August 2002
contingency arrangements
Contingency Arrangements
  • RSMC Wellington will takeover as TCWC for Nadi’s area of responsibility in the event of an outgage at RSMC Nadi.
  • Last takeover due to storm damage occurred in 1984
nadi backup procedures 1
Nadi Backup Procedures (1)
  • When there is a direct threat posed by a tropical cyclone Nadi:
    • Advises Wellington that it will initiate Check Bulletins on the GTS at 30 min intervals:This is Check Bulletin Number One issued by RSMC Nadi at {time, date}
nadi backup procedures 2
Nadi Backup Procedures (2)
  • In the event of a Check Bulletin failure, Wellington attempts to ascertain the operational status of Nadi;
  • If three Check Bulletins are missed and no contact has been established with Nadi then Wellington takes over Nadi’s TCWC responsibilities.
services provided 1
Services Provided (1)
  • First Priority (must be issued)
    • TC Alerts and Warnings for Island groups
    • Marine Warnings
    • SIGMETs
    • Special Advisory (for Vanuata)
  • Second Priority (all efforts made)
    • Tropical Disturbance Advisory
    • High Seas Bulletins
    • 24 Hour TAFs
services provided 2
Services Provided (2)
  • Third Priority (only if resources allow)
    • Aviation Area forecasts
    • Minor TAFs
  • Fourth Priority (only if resources allow)
    • Routine public weather bulletins
preparation for tc season
Preparation for TC Season
  • An annual 1 day workshop for forecasters is held generally in November, covering:
    • Back-up and contingency arrangements;
    • monitoring procedures;
    • case studies from the previous season;
    • forecasting techniques.
  • SNOWIE, interactive forecaster chart analysis tool
  • Heavy reliance on subjective satellite imagery techniques to provide “ball park” wind speeds
  • Dvorak not used systematically
  • Interactive tool for monitoring tropical cyclones;
  • Operational, forecast and model cyclone positions - entered manually
  • Provides an extrapolated track;
  • Database for historical information
communications with governments 1
Communications with Governments (1)
  • Ministry of Foreign Affairs and Trade
    • Contribute to pre-season briefing to coordinate disaster relief planning, with participants from the Ministries of Defence, and Civil Defence & Emergency Management, officials from the French Embassy and Australian High Commission.
    • MFAT immediately advise of a development of a new TC, forwarded all warnings
communications with governments 2
Communications with Governments (2)
  • FRANZ, high level inter-governmental coordination committee concerning Pacific disaster relief that recommends policy to governments
  • Steve Ready from MetService will be participating at the next FRANZ meeting in Wellington on 2 December
communications with governments 3
Communications with Governments (3)
  • Ministry of Civil Defence and Emergency Management are immediately advised whenever a cyclone enters the area south of 20 south between longitudes 160 east and 170 west
communications with governments 4
Communications with Governments (4)
  • Radio New Zealand International
    • Provides SW services to the Pacific;
    • Immediately informed by forecasts of a development of a new TC;
    • All warnings issued by Nadi are broadcast on RNZI’s short wave service;
    • If a cyclone is posing a threat to an Island Group then RNZI will broadcast warnings around the clock.
other activities
Other Activities
  • Annually exchange best track information with Brisbane and Nadi
  • Tropical cyclone summaries for the Wellington area forwarded to WMO for Annual Tropical Cyclone Summary
  • Steve Ready presented a workshop to Fiji Met Service forecaster in June 2001 on “T.C. Monitoring and Tracking”;
  • Steve Ready contributed to the WMO/BOM sponsored Southern Hemisphere Course on Tropical Cyclones held in Melbourne in September 2002