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Weather Visualization using METARs and TAFs

By Alexander Wurts

If you like this project please consider sponsoring me, so I can add more cool features.

Sponsor Link - It's only a few bucks a month.

Flock aka Slack but better

Join the Flock, a group chat platform, to see how you can contribute.

Data Source

Data retrieved live from aviation weather services, parsed and displayed to the user.

Click on the Runways for a fun animation.

Technology

React and D3 frontend powered by a nodejs backend. Hosted on a Google Cloud App Engine.

Why?

I am a private pilot and wanted an easier way to check the weather for an airport from my phone or computer.
This app visualizes the weather and allows anyone to search for an airport and see the most updated information.

API for accessing live Metar and TAF data:

Retrieve Most Recent METAR: /api/newestMETAR/:ident

Input:

  • ident:
    • Airport identifier code
    • Example: KBED, KBOS, KLAX, LAX, MIA, 7B2, 6B6

Return:

  • Singular METAR Object

Example: /api/newestMETAR/KBOS

   {
        raw: "KBOS 041554Z 32019G25KT 10SM BKN032 BKN042 16/07 A2998 
              RMK AO2 PK WND 32029/1516 SLP152 T01610067", string -> raw METAR
        airport: "KBOS", String -> Airport ident
        drct: 320,      number -> wind direction true
        sknt: 19,       number -> wind speed in knots
        gust: 25,       number -> wind gust speed in knots
        alti: 29.988122,   float -> altimeter  in inHg
        mslp: 1013.at,    float -> sea level pressure in millibars
        vsby: 10,       number -> visibility in statute miles
        tmpf: 16,       float -> temperature in celsius
        dwpf: 7,        float -> dew point in celsius
        flightcat: "VFR", string -> Flight Category can be VFR, IFR, MVFR, LIFR
        percip: null,   number -> amount of percipitation in inches
        valid: {
            year: 2019, number -> year
            month: 10,  number -> month where january is 0
            day: 4,     number -> day of month
            hour: 15,   number -> hour in day
            minute: 54, number -> minute in hour
        },
        clouds: [
            {
                cover: 'BKN', string -> cloud cover
                base: 1000,   number -> cloud base in ft agl
            },
            ... -> Multiple layers
        ],
        weather: [
            {
                text: "light rain", string -> weather decoded into english
                raw: " -RA",        string -> weather codes
            },
            ... Can be multiple
        ]
    }

METARS from the past N hours: /api/recentMETARs/:ident?hours=[number 0-48]

Input:

  • ident:
    • Airport identifier code
    • Example: KBED, KBOS, KLAX, LAX, MIA, 7B2, 6B6
  • hours (optional):
    • Past number of hours to retrieve METARS for. values 0-48 are vaid
    • Default: 5
    • Example: 5, 10, 20, 30, 40

Return

  • Multiple METAR objects sorted by valid date. See example METAR in /api/newestMETAR/

          {
              metars: [ List of METAR Objects ],  
              runways: [ 
              {
                  name: "04L/22R",                String -> Runway Name
                  name_remark: null,              String -> name remarks
                  length: 7864,                   number -> Runway length in ft
                  length_remark: null,            String -> length remarks
                  width: 150,                     number -> Runway width in ft
                  width_remark: null,             String -> width remarks
                  surface_type_condition: "ASPH-E",               String -> runway type
                  surface_type_condition_remark: null,            String -> condition remarks
                  surface_treatment: "GRVD",                      String -> Surface Treatment
                  surface_treatment_remark: null,                 String -> treatment remarks
                  pavement_classification_number: "90 /F/C/W/T",  String -> classification number
                  pavement_classification_number_remark: null,    String -> classification remarks
                  edge_light_intensity: "HIGH",                   String -> Lighting type
                  edge_light_intensity_remark: null,              String -> light remarks
                  direction: 40                                   number -> direction of one rwy direction. +180 for second
              },
              ... Multiple
              ]
          }
    

Most recent METAR for airport: /api/newestTAFS/{airport ident}

Input:

  • Airport Ident:
    • Airport identifier code
    • Example: KBED, KBOS, KLAX, LAX, MIA, 7B2, 6B6

Return:

  • Single TAF Object

Example: /api/newestTAFS/KSLN

      {
        released: {
            year: 2019,          number -> year
            month: 11,           number -> month where january is 0
            day: 4,              number -> day in month
            hour: 15,            number -> hour in day UTC
            minute: 40,          number -> minute in day UTC
            second: 0,           number -> second. almost always 0
        },
        start: {
            year: 2019,          number -> year
            month: 11,           number -> month where january is 0
            day: 4,              number -> day in month
            hour: 15,            number -> hour in day UTC
            minute: 40,          number -> minute in day UTC
            second: 0,           number -> second. almost always 0
        },
        end: {
            year: 2019,          number -> year
            month: 11,           number -> month where january is 0
            day: 4,              number -> day in month
            hour: 15,            number -> hour in day UTC
            minute: 40,          number -> minute in day UTC
            second: 0,           number -> second. almost always 0
        },
        airport: "KSLN",         string -> Airport Indentifier
        raw: "KSLN 041540Z 0416/0512 12007KT 6SM -RA BKN007 OVC035 <br/>FM041800 11009KT 6SM -RA OVC012 <br/>FM050200 13013KT P6SM SCT015 OVC035", // string -> Raw TAF
        forecast: [
            {
                type: "FM",                 string -> forecast block type. Fields specific to given type
                start: {
                    year: 2019,          number -> year
                    month: 11,           number -> month where january is 0
                    day: 4,              number -> day in month
                    hour: 15,            number -> hour in day UTC
                    minute: 40,          number -> minute in day UTC
                    second: 0,           number -> second. almost always 0
                },
                end: {
                    year: 2019,          number -> year
                    month: 11,           number -> month where january is 0
                    day: 4,              number -> day in month
                    hour: 15,            number -> hour in day UTC
                    minute: 40,          number -> minute in day UTC
                    second: 0,           number -> second. almost always 0
                },
                
                drct: 120,                  number -> wind direction true
                sknt: 7,                    number -> wind speed kts     
                gust: 0,                    number -> wind gust speed kts
                vsby: 6,                    float -> visibility in statute miles
                weather: [
                    {
                        text: "light rain", string -> decoded weather description
                        raw: "-RA"          stirng -> coded weather description
                    }
                ],
                clouds: [
                    {
                        cover: 'BKN', string -> cloud cover
                        base: 1000,   number -> cloud base in ft agl
                    },
                    ... -> Multiple layers
                ],
        },
            ... Includes multiple forecast items

        ]
    }

One TAF for all airports within radius of airport ident: /api/nearestTAFS/:ident/:radius

Input:

  • ident:
    • Airport identifier code
    • Example: KBED, KBOS, KLAX, LAX, MIA, 7B2, 6B6
  • radius:
    • Radius in nautical miles (NM) around given airport lat lon
    • Ex: 10, 20, 30, 40, 100

Example: /api/nearestTAFS/KSLN/20

  • input
    • ident: KSLN
    • radius: 20
  • Return
    • Multiple TAF objects in an array. See single TAF example in /api/newestTAFS/

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