ADDS Text Data Server - METAR Examples


 

Station String

Parameter(s) Allowed value(s) Example(s) Description
stationString
  • station id using the four-letter specification
  • delimited by white spaces and/or commas (,)
stationString=KDEN KSEA, PHNL&hoursBeforeNow=2 obtain all available METARs for KDEN, KSEA and PHNL from the past two hours
stationString using partial icaoId name stationString=KSEA KDE&hoursBeforeNow=3 obtain METARs for KSEA and all icaoIds beginning with KDE (i.e. KDEN, KDEH, KDEW, ...etc.) from the past three hours
stationString using partial icaoId name and wildcard (*) stationString=KSEA KDE*&hoursBeforeNow=1 equivalent to above, obtain METARs for KSEA and all icaoIds beginning with KDE from the past hour
stationString using '@' and two-letter U.S. state (or two-letter Canadian province) abbreviation to obtain METARS for a state stationString= @WA&hoursBeforeNow=1 obtain METARs for all icaoIds from Washington state for the past hour
stationString stationString= @BC&hoursBeforeNow=1 obtain METARs for all icaoIds from British Columbia, Canada for the past hour
stationString using '~' and two-letter country abbreviation to obtain METARS for a country stationString= ~au&hoursBeforeNow=1 obtain METARs for all icaoIds from Australia for the past hour
 

Time Range

Parameter(s) Allowed Values Example(s) Description
startTime, endTime start and end times in seconds since January 1, 1970 startTime=1412092363
&endTime=1412099563&stationString=PHTO
obtain all METARs for PHTO collected between these start and end times
startTime, endTime
  • start and end times in ISO8601 date/time format
  • query is based on METAR obsTime
startTime=
2014-09-30T15:52:43Z
&endTime=
2014-09-30T17:52:43Z
&stationString=PHTO
obtain all METARs for PHTO collected between these start
and end times using ISO8601
date/time format, with UTC offset:
YYYY-MM-DDThh:mm:ssZ.
Please see W3C date/time formats.
startTime, endTime
  • start and end times in ISO8601 date/time format
  • query based on METAR obsTime
startTime= 2014-09-30T 08:52:43+0700&endTime= 2014-09-30T 10:52:43+0700&stationString=PHTO obtain all METARs for PHTO collected between these start
and end times using ISO8601 date/time format, with local offset:
YYYY-MM-DDThh:mm:ss+
hhmm.
OR

YYYY-MM-DDThh:mm:ss-
hhmm.

NOTE:
Due to differences in character encodings by various web
browsers, the + might get encoded to a whitespace.
To avoid this from occurring, use %2B in place of the +.
Please see W3C date/time formats.
hoursBeforeNow
  • any positive integer or floating point value
  • n = number of hours before current time
  • query based on METAR obsTime
stationString=KDEN& hoursBeforeNow=3 obtain all METARs collected in the last three hours for KDEN
hoursBeforeNow stationString=KDEN& hoursBeforeNow=1.5 obtain all METARs collected in the last hour and a half for KDEN
NOTE:The ADDS database only retains three days of data.
 

Most Recent

Parameter(s) Allowed Value(s) Example(s) Description
mostRecent
  • true - get the single most recent METAR (only one value is returned) for the specified time range
  • false - don't get the most recent METAR, equivalent to omitting mostRecent parameter
  • query based on METAR obsTime
hoursBeforeNow=3&
mostRecent=true& stationString=PHNL KSEA
of all METARS corresponding to PHNL and KSEA, obtain the single most recent METAR from the past three hours. Only one METAR is returned.
NOTE: The mostRecent constraint is applied after all other constraints have been applied to yield only one METAR. This single METAR corresponds to the most recent in the result set defined by the other constraints. The mostRecent constraint must be accompanied by a time constraint (hoursBeforeNow, start/end time, etc.). The mostRecent constraint may not be used in conjunction with the mostRecentForEachStation constraint.
 

Most Recent for each Station

Parameter(s) Allowed Values Example(s) Description
mostRecentForEachStation See the 1.3 Release Notes for details
  • constraint
    - request the most recent for each METAR station in the fastest fashion. Not appropriate for historical data retrieval
  • postfilter
    - post filter results after applying all other constraints
  • true
    - same as 'postfilter' method
  • false
    - don't get the most recent for each METAR station, equivalent to omitting this parameter

  • query is based on METAR obsTime
mostRecentForEachStation =constraint &hoursBeforeNow=1.25 &stationString=KDE use the constraint method to retrieve the most recent METAR for all KDE* stations that were reported in the past hour and fifteen minutes. Note: this is not appropriate for historical data retrieval.
mostRecentForEachStation startTime=1412092363& endTime=1412099563 &stationString=PHTO, PHKO, KSEA, KSFO& mostRecentForEachStation =postfilter obtain the METARS for PHTO, PHKO, KSEA and KSFO from the indicated start and end times, using the postfilter method.
Return only the most recent for each of these stations within the time range.
There should be a total of four results, one result each for PHTO, PHKO, KSEA and KSFO.
mostRecentForEachStation startTime=1412092363& endTime=1412099563 &stationString=PHTO, PHKO, KSEA, KSFO& mostRecentForEachStation =true same as above, this defaults to the postfilter method to obtain the most recent METARs for PHTO, PHKO, KSEA and KSFO.

NOTE: See the 1.3 Release Notes for details on the difference between the mostRecentForEachStation types.
 

Lon-Lat Rectangle

Parameter(s) Allowed Values Example(s) Description
minLat, minLon, maxLat, maxLon
  • longitude and latititude in decimal degrees
  • -180<= lon <=180
  • -90<= lat <=90
  • Please refer to : latitude and longitude for a refresher on these ranges.
  • parameters can be listed in any order
minLat=25&minLon=-130& maxLat=65&maxLon=-40& hoursBeforeNow=3 obtain METARs collected within the last 3 hours for a rectangular region (bounding box) defined by the min and max lon and lat
NOTE:
  • The LonLatRect constraint can accommodate situations where the bounding box crosses the International Date Line
  • The LonLatRect constraint does not support bounding boxes that encompass a pole.
 

Radial Distance

Parameter(s) Allowed Values Example(s) Description
radialDistance
  • a radius (statute miles) around a point (longitude and latitude in decimal degrees)
  • -180<= lon <=180
  • -90<= lat <=90
  • 0< radius <=500
  • Radius and origin are separated by a semicolon(;)
  • Described area may not cross the international dateline or either pole
  • Please refer to : latitude and longitude for a refresher on these ranges.

radialDistance=20;-104.65,39.83& hoursBeforeNow=3 obtain METARs collected within the last 3 hours for all the stations within 20 statute miles of -104.65,39.83 (KDEN)

 

Flight Path

Parameter(s) Allowed Values Example(s) Description
flightPath
  • maximum distance in statute miles
  • two or more way points
  • Waypoints may take the form of (lon,lat) or station Ids or a mixture of (lon,lat) and station Id
  • lon, lat are delimited by a comma (,)
  • maximum distance MUST precede the way points
  • maximium distance and way points are delimited by a semicolon( ;)
  • the ordering of waypoints is significant: always start with origin, end with destination
  • time range:
    • use start, end times
    • use hoursBeforeNow
    • default (hoursBeforeNow=1)
flightPath=57.5; -125.27,49.95; -104.65,39.83 &hoursBeforeNow=3 obtain all METARS collected in the past 3 hours for the flight path from Campbell River, BC to Denver, CO using a 57.5 statute mile maximum distance
flightPath flightPath=57.5; -125.27,49.95; -104.65,39.83 same as above, except using the default time range of hoursBeforeNow=1
flightPath flightPath=57.5; -104.65,39.83; -97.5,27.77; -81.33,28.42; -73.15,44.47 A flight path from Denver,Co to Corpus Cristi, Tx to Orlando, Fl to Burlington, Vt using the default time range and a 57.5 statute mile maximum distance.
flightPath flightPath=57.5; KDEN; -97.5,27.77; KMCO; -73.15,44.47 Same as above, except the station name for Denver and Orlando are employed, rather than their lon,lat values.

NOTE:
Flight path results are sorted by distance along the flight path from origin to destination.
The flight path constraint does not support the following situations:
  • flight paths that cross the poles
  • flight paths that cross the International Date Line.
 

Density

Parameter(s) Allowed Values Example(s) Description
minDegreeDistance 0 < any value <90

The degree distance is the distance (based on longitude and latitude)
between stations. The larger the
value of minDegreeDistance, the less dense the results.
Duplicate stations are filtered and the most recent of duplicate
stations is reported.
flightPath=157.5; KDEN; KMCO& minDegreeDistance=50 obtain all METARS collected in the past 3 hours for the flight path from Denver, CO to Orlando, FL using a 157.5 statute mile maximum distance and requesting a lower density of results.
minDegreeDistance 0 < any value <90

The degree distance is the distance (based on longitude and latitude)
between stations. The larger the
value of minDegreeDistance, the less dense the results.
Duplicate stations are filtered and the most recent of duplicate
stations is reported.
flightPath=157.5; KDEN; KMCO& minDegreeDistance=1 obtain all METARS collected in the past 3 hours for the flight path from Denver, CO to Orlando, FL using a 157.5 statute mile maximum distance and requesting a higher density of results.
 

Field Parameters

Parameter(s) Allowed Values Example(s) Description
fields
  • Constrain the results to contain only the fields of interest.
  • Indicate the fields of interest by a list of space or comma
    (,)
    delimited field names (as indicated in the Metar Field Description Table).
  • If no fields are indicated, the default condition is assumed and all available fields in the Metar Field Description are returned.
flightPath=57.5; -125.27,49.95; -104.65,39.83 &hoursBeforeNow=3 &fields=sky_cover, cloud_base_ft_agl, elevation_m, vert_vis_ft obtain all METARS collected in the past 3 hours for the flight path Campbell River, BC to Denver, CO using a 57.5 statute mile maximum distance. Only the available sky cover, cloud base, elevation and vertical visibility results are returned.


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