|
Examples of METAR Queries:
All requests must be constrained by time
| Constraint Type |
Parameter(s) |
Allowed value(s) |
Example(s) |
Description |
| Station String |
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
|
| Station String |
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 |
| Station String |
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 |
| Station String |
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 |
| Station String |
stationString |
|
stationString=
@BC&hoursBeforeNow=1
|
obtain METARs for all icaoIds from British Columbia, Canada for the past hour |
| Station String |
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 |
NOTE:The ADDS database only retains three days of data.
| Constraint Type |
Parameter(s) |
Allowed Value(s) |
Example(s) |
Description |
| Most Recent |
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.
| Constraint Type |
Parameter(s) |
Allowed Values |
Example(s) |
Description |
MostRecentFor
EachStation |
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. |
MostRecentFor
EachStation |
mostRecentForEachStation |
|
startTime=1376354856&
endTime=1376362056 &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.
|
MostRecentFor
EachStation |
mostRecentForEachStation |
|
startTime=1376354856&
endTime=1376362056 &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.
| Constraint Type |
Parameter(s) |
Allowed Values |
Example(s) |
Description |
| LonLatRect |
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.
| Constraint Type |
Parameter(s) |
Allowed Values |
Example(s) |
Description |
| Radial Distance |
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) |
| Constraint Type |
Parameter(s) |
Allowed Values |
Example(s) |
Description |
| Flight Path |
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
|
| Flight Path |
flightPath |
|
flightPath=57.5;
-125.27,49.95;
-104.65,39.83
|
same as above, except using the default time range of hoursBeforeNow=1 |
| Flight Path |
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.
|
| Flight Path |
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.
| Constraint Type |
Parameter(s) |
Allowed Values |
Example(s) |
Description |
| Density |
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.
|
| Density |
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.
|
| Constraint Type |
Parameter(s) |
Allowed Values |
Example(s) |
Description |
| Field Parameters |
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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