Surface Weather Charts

One of the primary ways of representing the weather is the use of surface weather charts. We all should be familiar with these. The surface weather chart should be the first thing you look at to build your mental picture of the current and expected weather conditions.

The chart could be historical; - an analysis of the situation at a particular time; or it could be a prognostic forecast chart for some time in the future. So check the type and time of the chart. You may have both, the most recent analysis and the latest prognostic chart. Remember, all chart times in MetFlight are in UTC.

The MetFlight GA image looper function is a helpful tool for looking at the progression of the weather as depicted on the standard analysis and prognostic charts.

Invercargill

Above mean sea level

TCu

Towering Cumulus

agl

above ground level

Cb

Cumulonimbus

Flight Information Service communications

ATS

Air Traffic Service

Royal New Zealand Air Force

in vicinity of aerodrome Thunderstorm

ATC

Air Traffic Control

VC

in vicinity of aerodrome

Probabilityxx%

TIL

Until

FM

From

Becoming

Temporarily

Routine air report from aircraft in flight

FIR

Flight Information Region

Internet Flight Information Service

VFR

Visual flight rules

Automatic Terminal Information Service

BWR

Basic weather report

New Zealand Flight Information Region

Aerodrome special routine meteorological report

Automatic aerodrome routine meteorological report

Aerodrome routine meteorological report

TAF

Aerodrome forecast

Area forecast

Significant meteorological information