WEATHER NOTES

Min Max Data - (All extreme data is read at 9am & thus is taken over a period of 24 hrs)

OBSERVATION

UNIT

RESOLUTION

DAY REPORTED ON

Max Air Temperature

(°C)

 0.1

PREVIOUS

Min Air Temperature

(°C)

 0.1

SAME

Max Humidity

(%)

 0.1

SAME

Min Humidity

(%)

 0.1

SAME

Max Dew-Point

(°C)

 0.1

SAME

Min Dew-Point

(°C)

 0.1

SAME

Max Wind Gust

(km/h)

 0.1

SAME

Max Wind Gust Direction

(16 Points)

SAME

Wind Run Total

(km)

 0.1

SAME

Min Wind Chill

(°C)

 0.1

SAME

Max Heat Index

(°C)

 0.1

PREVIOUS

Max Air Pressure

(hPa)

 0.1

SAME

Min Air Pressure

(hPa)

 0.1

SAME

Min Grass Temperature

(°C)

 0.1

SAME

Rainfall

(mm)

 0.2

SAME

Phenomena

(Observation)

SAME

~ t = Thunderstorm, s = Distant Thunderstorm, h = Hail, d = Dew, g = Fog & f = Frost

# I believe these are the official period of measurement for Min/Max data by the BoM in Australia.

The tables below show data recorded over the same 24 hour period - see the blue boxes.

Till 31/12/2008

From 01/01/2009

FURTHER (Till 31/01/2012)

~ Humidity over 97% equals 100%, under 10% equals 5%

~ Wind gusts are unable to be measured under 4.3km/h

~ Heat Index is not calculated when the air temperature falls below 20°C, it equals the air temperature.

~ Air pressure is taken from station level (approx 8m ASL). Add 1hPa for sea level pressure.

FURTHER (From 01/02/2012)

~ Humidity limit values are no longer restricted

~ Wind gusts are unable to be measured under 0.5km/h accurately, thus are ignored

~ Heat Index is not calculated when the air temperature falls below 20°C, it equals the air temperature.

~ Air pressure is taken from station level (approx 8m ASL). Add 1hPa for sea level pressure.

9am & 3pm Data

OBSERVATION

UNIT

SPECIFICATIONS

Air Temperature

(°C)

Immediate

Humidity

(%)

Immediate

Dew-Point

(°C)

Immediate

Air Pressure

(hPa)

Immediate

Air Pressure Trend

from Weather station

Wind Gust

(km/h)

Max in previous 10mins

Wind Speed

(km/h)

Average in previous 10mins

Wind Direction

(16 Points)

Average in previous 10mins

Wind Chill

(°C)

Min in previous 10mins

Running Summaries

Current Monthly Report - Data averaged for the month so far. Where extreme average records are mentioned,

these are calculated on the data received so far. Records are officially recognised only after an official monthly

report has been released.