List of Aviation Weather Products

Meteorological Product Product Description Use1


Aerodrome QNH Forecast

This is a forecast of the maximum and minimum QNH vales. The forecast is provided as a guide to the range of pressure expected during a specified validity period. The main purpose is to provide a check on the actual QNH passed to an aircraft to ensure that any errors in transmission do not result in an incorrect altimeter setting. Aerodrome QNH forecasts, which are normally appended to TAF, shall not be used as an altimeter setting. Refer also to METAR AUTO. Pre-flight

AIREP and AIREP Special

Routine and Special Aircraft Reports

This is a routine report (AIREP) from an aircraft in-flight, or a special report (AIREP Special) provided when hazardous meteorological conditions are encountered. Refer also to PIREP. In-flight


Aviation Area Winds

This provides forecast winds for 1,000; 3,000; 5,000; 7,000 and 10,000 ft, and forecast temperatures for 5,000; 7,000 and 10,000 ft for each of 17 areas in NZ (previously the ARFOR areas).
AAW Areas (PDF 430 KB)
AAW Example (PDF 4.7 MB)


Aerodrome Terminal Information Service

Aerodrome take-off and landing reports provided on discrete frequencies at selected aerodromes. Prior to takeoff or landing
Basic Weather Report
Basic weather reports are verbal comment on actual weather conditions at particular aerodromes. BWR are not an alternative to METAR, SPECI or METAR AUTO reports.
Examples of basic weather reports are:
  • An aircraft operator's ground staff passing a landing report to their incoming aircraft at an aerodrome unattended by Air Tracffic Services (ATS)
  • An individual, normally working outside aviation, conveying current information about local weather to an aircraft opeator or aircrew
  • A pilot advising another pilot about weather conditions observed or experienced.
Pre-flight and In-flight


This is a chart depicting forecast tubulence, mountain waves, CBs, Icing and volcanic ash activity in the New Zealand (NZZC) FIR. Three airspace options are provided including SFC-FL410, SFC-FL250 & SFC-FL100. A short situation statement (textual) is also included.

GNZSIGWX Example (PDF 438 KB)


Graphical Aviation Forecast
This is a chart depciting forecast weather information for low level flights (SFC to 10,000 ft).

(PDF 4.7 MB)

GRIB (Gridded Binary)

Grid Point Forecast

This is meteorological information provided in the GRIB code and includes information such as wind and temperature forecasts for a set of regularly spaced points. These are typically spaced at intervals of 1.25 degrees of latitude and longitude. Pre-flight

Hi-Level SIGWX

High Level Significant Weather Forecast

This is a forecast for the airspace between FL250 and FL630. The forecasts are normally issued in chart form for specific geographical areas.


Medium or Mid-Level SIGWX

Medium (Mid) Level Significant Weather Forecast

This is a forecast for the airspace between FL100 and FL250. The forecasts are normally issued in chart form for specific geographical areas.



Mean Sea Level Analysis and Mean Sea Level Prognosis

A mean sea level analysis is a contour chart of the atmospheric pressure at mean sea level for a given time in the past. A mean sea level prognosis is a contour chart of the expected atmospheric pressure at mean sea level for a given time in the future. Pre-flight


Aerodrome Reports

Aerodrome reports are provided for specific aerodromes and presented in the METAR (Meteorological Aerodrome Report) and SPECI (Special Aerodrome Report) codes.

METAR Example          SPECI Example
METAR Flowchart


METAR AUTO are aerodrome reports provided from Automatic Weather Stations (AWS) in the METAR code.
Example                      More Info                 AWS sensors


OPMET (Operational Meteorological Information) is a term used to describe a collection of operational meteorological information comprising TAF, METAR, SPECI, SIGMET, VAA and AIREP. Refer to individual OPMET products


Pilot Report

This is similar to an AIREP Special and is an abbreviated AIREP Special provided by domestic operators in New Zealand whenever weather phenomena of significance or of a hazardous nature are encountered. In-flight


Radar Picture (image)

This is a radar picture (image) of precipitation. Weather radar can infer precipitation intensity (with some limitations) and location from the strength of the echo, the time taken for it to return, and the location from which it came. There are six weather radars in New Zealand located near Warkworth, New Plymouth Airport, Mahia (Hawkes Bay), Wellington, Rakaia (southwest of Christchurch), and Invercargill Airport.


Route Forecast

This is a forecast of wind, temperature, and significant weather for a specific route and flight levels.


Satellite Picture

These are obtained from geostationary and polar orbiting satellites and provide visible and infrared images of cloud tops.


SIGMET (Significant Meteorological Information) provide information concerning the occurrence or expected occurrence of weather phenomena of a hazardous nature and which could affect the safety of aircraft in flight.
Pre-flight & In-flight

SIGMET (Graphical)

Graphical SIGMET Monitor (GSM) - User Guide - includes example (PDF 2.1 MB)  


Aerodrome Forecast

Aerodrome forecasts are provided for specific aerodromes and presented in the TAF (Terminal Aerodrome Forecast) code.

TAF Flowchart
Pre-flight & In-flight

Takeoff and Landing Reports

These are reports of meteorological conditions at attended aerodromes prepared by the ATS unit immediately prior to a takeoff or landing. Prior to takeoff or landing


Landing Forecast

A TREND forecast consists of an aviation weather report (METAR or SPECI) to which is appended a concise statement of any significant changes to those described in the report that are expected to occur during the following two hours. A TREND forecast shall supersede, during the validity of the TREND, the aerodrome forecast (TAF) for the aerodrome concerned. Pre-flight & In-flight


Volcanic Ash Advisory

VAA provide information about ash in the atmosphere resulting from volcanic eruptions.

Living with Volcanic Ash (PDF 1.6 MB)
Pre-flight & In-flight

Volcanic Ash Graphic
VAG provides a VAA in graphical form

Pre-flight & In-flight


Routine broadcasts of selected OPMET. Broadcasts are made from Auckland (Auckland VOLMET) using discrete HF ground to air frequencies. In-flight

Wind and Temperature Forecast

Wind and temperature forecasts are issued in chart form for specific times and levels. Wind direction and speed are indicated at selected points by wind arrows with feathers and shaded pennants, and spot temperatures are enclosed in circles.


Note 1: This column indicates whether the product shown is intended primarily for pre-flight or in- flight use.

Aviation Area Winds Map (PDF 430 KB)

AIP New Zealand Table GEN 3.5-2 Meteorological Observations and Reports

AIP New Zealand Table GEN 3.5-5 TAF Availability by Location

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