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Weather stations are located at:

• Dieffenbach Point (-41.231722°, 174.146231°)

• Northern Entrance / Kokomahua Islands

• Waikawa Marina

• West Head (-41.093092°, 174.319968°)

• Tory Entrance / West Head (-41.213276°, 174.314669°)

• Waikawa Marina (-41.2647, 174.0394)

Weather is forwarded to the Weather Underground, stored in a data warehouse, and provided to partner organisations. Partner feeds are available as NMEA via a UDP stream or TCP server, as XML, or JSON. For TCP server access:

• Dieffenbach Point on port 45068

• Northern Entrance on port 45051

• Tory Entrance on port 45050

• Waikawa Marina on port 45054

Picton Harbours also forwards data from three Vaisala WXT 530 sensors maintained by Port Marlborough Limited.

Stations are located at:

• Ferry Terminal Building (-41.285371°, 174.005331°)

• Shakespeare Bay (-41.275865°, 173.999985°)

• Waitohe Wharf (-41.282436°, 174.006476°)

Partner feeds are available as NMEA

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Three sentences are produced once a minutevia TCP server:

• Ferry Terminal 12027

• Shakespeare Bay 12026

• Waitoe Wharf 12028

NMEA Format

Several sentence types are produced. Each is followed by a CR/LF.

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The first line contains the wind bearing, and average speed in knots

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• A line containing a “T” provides the average wind speed and direction

• A line containing a “M” provides the minimum wind speed and direction over a sample period

• A line containing an “X” provides the maximum wind speed and direction over a sample period

• A line containing a “G” provides the IMO three-second maximum gust bearing speed and speed in knotsThe third sentence contains the direction

• A line containing RH, TEMP, and PRESS contains relative humidity in percent, the temperature in degrees celsius, and the barometric pressure in pascals

• A line containing RH, TEMP, PRESS, and the DP contains relative humidity as percent.in percent, the temperature in degrees celsius, the barometric pressure in pascals, and the dew point

NMEA format sentence example:

$WIMWV,332.0,T,05.33,N,A*22
$WIMWV,322.0,G,09.22,N,A*3C
$WIXDR,H,092,P,RH,C,014.1,C,TEMP,P,1.025,B,PRESS,C,009.9,C,DP*08

JSON Format

A JSON packet is produced once a minute in the following format. As per the NMEA format:

• wind directions are in degrees

• wind speed is in knots

• wind gust is the IMO three-second maximum gust

• relative humidity in percent

• temperature is in degrees celsius

• barometric pressure is in pascals

• relative humidity is in percent

JSON format example:

{
  "sensor_id": "pcn.westhead.gmx500.1",
  "timestamp": "2021-12-02T09:43:51Z",
  "measurement_id": "0f726c8da32d5720fd6171aedf1c4b46",
  "avg_temp": 18.1,
  "avg_pressure": 1017.9,
  "humidity": 115.0,
  "dewpoint": 13.4,
  "wind_avg": 1.21, 
  "wind_dir": 329.0,
  "wind_gust": 1.75,
  "wind_gust_dir": 319.0
  }