A .NET 6.0 library intended for parsing raw METAR data. Current version can parse METAR and TREND reports.
Nuget package: https://www.nuget.org/packages/MetarParserCore/
This library is easy to use. Just follow exanple below:
// Input raw METAR string
var raw = "UWKD 291500Z 32003MPS CAVOK 18/02 Q1019 R29/CLRD70 NOSIG RMK QFE753/1004=";
// Initialize METAR parser
var metarParser = new MetarParser();
// Parse raw METAR
var airportMetar = metarParser.Parse(raw);
// Serialization using Newtonsoft.Json
var serializedResult = JsonConvert.SerializeObject(airportMetar);
Classes |
Description |
ReportBase |
Base abstract class for all meteorological reports. |
Metar |
General METAR data class. Any property of this class could be null. Inhereted from ReportBase. |
Property name |
Type |
Description |
ReportType |
enum ReportType |
METAR report type |
IsNil |
bool |
Report is empty |
Month |
enum Month |
Current month |
Modifier |
enum MetarModifier |
METAR modifier |
SurfaceWind |
SurfaceWind |
Info about surface wind |
PrevailingVisibility |
PrevailingVisibility |
Info about visibility |
PresentWeather |
WeatherPhenomena[] |
Special weather conditions |
CloudLayers |
CloudLayer[] |
Info about clouds (Cloud layers) |
ParseErrors |
string[] |
Array of parse errors |
Unrecognized |
string[] |
Unrecognized tokens by METAR TokenRecognizer |
Property name |
Type |
Description |
Airport |
string |
Airport ICAO code |
ObservationDayTime |
ObservationDayTime |
Date and time by Zulu of the observation |
RunwayVisualRanges |
RunwayVisualRange[] |
Info about visibility on runways (RVR) |
Temperature |
TemperatureInfo |
Information about temperature |
AltimeterSetting |
AltimeterSetting |
Information about air pressure |
RecentWeather |
WeatherPhenomena |
Recent weather info |
WindShear |
WindShear |
Wind shear info |
Motne |
Motne[] |
Info about runway conditions |
SeaCondition |
SeaCondition |
Info about sea-surface temperature and state |
Trends |
Trend[] |
Information about changes of weather forecast |
IsDeneb |
bool |
Fog dispersal operations are in progress |
MilitaryWeather |
MilitaryWeather |
Military airfield weather (represents in color codes) |
Remarks |
string |
Additional remarks (RMK) |
Property name |
Type |
Description |
Direction |
int |
Current wind direction (heading) |
IsVariable |
bool |
Sign if wind has variable direction (VRB) |
Speed |
int |
Speed of the wind |
GustSpeed |
int |
Max wind speed or gust speed |
WindUnit |
enum WindUnit |
Type of wind unit |
ExtremeWindDirections |
ExtremeWindDirections |
Info about extreme wind directions |
Property name |
Type |
Description |
IsCavok |
bool |
Sign if visibility marked as CAVOK. Means Ceiling and Visibility OK |
VisibilityInMeters |
VisibilityInMeters |
Prevailing visibility in meters |
VisibilityInStatuteMiles |
VisibilityInStatuteMiles |
Prevailing visibility in statute miles |
Property name |
Type |
Description |
WeatherCondition |
enum WeatherCondition |
Ordered array of weather conditions |
Property name |
Type |
Description |
CloudType |
enum CloudType |
Cloud type |
CloudAltitude |
int |
Cloud altitude |
ConvectiveCloudType |
enum ConvectiveCloudType |
Convective cloud type |
IsCloudBelow |
bool |
Cloud below airport (in mountain airports) |
Property name |
Type |
Description |
Day |
int |
Day of the current month |
Time |
Time |
Time of the observation |
Property name |
Type |
Description |
RunwayNumber |
string |
Number of the current runway |
VisibilityValue |
int |
RVR value in meters/feets (min) |
UnitType |
enum RvrUnitType |
Unit type of the current RVR |
MeasurableBound |
enum MeasurableBound |
Mark of the measurement area |
RvrTrend |
enum RvrTrend |
Rvr trend |
Property name |
Type |
Description |
Value |
int |
Temperature value in Celsius |
DewPoint |
int |
Temperature dew point in Celsius |
Property name |
Type |
Description |
UnitType |
enum AltimeterUnitType |
Altimeter unit type |
Value |
int |
Altimeter value |
Property name |
Type |
Description |
IsAll |
bool |
Wind shear on all runways |
Type |
enum WindShearType |
Wind shear type |
RunwayNumber |
string |
Runway number |
Property name |
Type |
Description |
RunwayNumber |
string |
Runway number |
Specials |
enum MotneSpecials |
MOTNE special sign |
TypeOfDeposit |
enum MotneTypeOfDeposit |
Type of deposit |
ExtentOfContamination |
enum MotneExtentOfContamination |
Extent of contamination of the current runway |
DepthOfDeposit |
int |
Depth of deposit (2 digits) -1 - depth not significant (has value "//") |
FrictionCoefficient |
int |
Braking conditions -1 - not measured (has value "//") |
Property name |
Type |
Description |
SeaTemperature |
int |
Temperature in Celsius |
WaveHeight |
int |
Average height of the waves in decimeters |
SeaState |
enum SeaState |
Sea state |
Property name |
Type |
Description |
TrendType |
enum TrendType |
TREND report type |
TrendTime |
TrendTime |
TREND time |
MilitaryWeather |
MilitaryWeather |
Military airfield weather (represents in color codes) |
Property name |
Type |
Description |
MilitaryColorCode |
enum MilitaryColorCode[] |
Array of color codes |
IsClosed |
bool |
Sign if airfield is closed. BLACK color is defined |
Property name |
Type |
Description |
FirstExtremeDirection |
int |
First value of the extreme wind direction interval |
LastExtremeWindDirection |
int |
Last value of the extreme wind direction interval |
Property name |
Type |
Description |
VisibilityValue |
int |
Visibility value in meters |
VisibilityDirection |
enum VisibilityDirection |
Direction of the represented visibility |
MaxVisibilityValue |
int |
Max visibility value |
MaxVisibilityDirection |
enum VisibilityDirection |
Max visibility direction |
Property name |
Type |
Description |
LessThanSign |
bool |
(M sign) - denotes less than represented value |
WholeNumber |
int |
Whole number miles of visibility/whole number of mixed fraction |
Numerator |
int |
Numerator of the fraction |
Denominator |
int |
Denominator of the fraction |
Property name |
Type |
Description |
Hours |
int |
Hours |
Minutes |
int |
Minutes |
Property name |
Type |
Description |
AtTime |
Time |
Attribute "AT" |
FromTime |
Time |
Attribute "FM" |
TillTime |
Time |
Attribute "TL" |
ValueName |
ID |
Description |
NotSpecified |
0 |
|
Metar |
1 |
METAR report |
Trend |
2 |
TREND Report |
ValueName |
ID |
None |
0 |
January |
1 |
February |
2 |
March |
3 |
April |
4 |
May |
5 |
June |
6 |
July |
7 |
August |
8 |
September |
9 |
October |
10 |
November |
11 |
December |
12 |
ValueName |
ID |
None |
0 |
Auto |
1 |
Cor |
2 |
ValueName |
ID |
None |
0 |
MetersPerSecond |
1 |
KilometersPerHour |
2 |
Knots |
3 |
ValueName |
ID |
Description |
None |
0 |
|
Light |
1 |
|
Heavy |
2 |
|
Vicinity |
3 |
|
Shallow |
4 |
|
Patches |
5 |
|
Partial |
6 |
|
Drifting |
7 |
|
Blowing |
8 |
|
Shower |
9 |
|
Thunderstorm |
10 |
|
Freezing |
11 |
|
Drizzle |
12 |
|
Rain |
13 |
|
Snow |
14 |
|
SnowGrains |
15 |
|
IceCrystals |
16 |
|
IcePellets |
17 |
|
Hail |
18 |
|
SnowPellets |
19 |
|
UnknownPrecipitation |
20 |
|
Mist |
21 |
Mist - visibility is 1000 meters or more |
Fog |
22 |
Fog - visibility is less than 1000 meters |
Smoke |
23 |
|
VolcanicAsh |
24 |
|
Dust |
25 |
|
Sand |
26 |
|
Haze |
27 |
|
Spray |
28 |
|
DustWhirls |
29 |
|
Squalls |
30 |
|
FunnelCloud |
31 |
|
SandStorm |
32 |
|
DustStorm |
33 |
|
NoSignificantWeather |
34 |
NSW |
ValueName |
ID |
Description |
None |
0 |
Not specified |
SkyClear |
1 |
Sky clear - No cloud present |
Few |
2 |
Few - 1-2 oktas |
Scattered |
3 |
Scattered - 3-4 oktas |
Broken |
4 |
Broken - 5-7 oktas |
Overcast |
5 |
Overcast - 8 oktas |
VerticalVisibility |
6 |
Vertical visibility - indefinite ceiling |
Clear |
7 |
Clear below 10,000 ft as interpreted by an autostation |
NoSignificantClouds |
8 |
No significant clouds - clouds present at and above 5,000 ft |
NoCloudDetected |
9 |
No cloud detected |
ValueName |
ID |
None |
0 |
Cumulonimbus |
1 |
ToweringCumulus |
2 |
ValueName |
ID |
None |
0 |
Meters |
1 |
Feets |
2 |
ValueName |
ID |
Description |
None |
0 |
|
Lower |
1 |
Preceding the lowest measurable value |
Higher |
2 |
Preceding the highest measurable value |
ValueName |
ID |
Description |
None |
0 |
Not represented |
Upward |
1 |
Visibility became better |
Downward |
2 |
Visibility became worse |
NoChange |
3 |
Without changes |
ValueName |
ID |
None |
0 |
Hectopascal |
1 |
InchesOfMercury |
2 |
ValueName |
ID |
Description |
Both |
0 |
Wind shear during landing or take off |
TakeOff |
1 |
Wind shear during take off |
Landing |
2 |
Wind shear during landing |
ValueName |
ID |
Description |
Default |
0 |
Special sign not specified |
Cleared |
1 |
Contamination has disappeared or runway has been cleared |
Closed |
2 |
Runway closed |
ClosedToSnow |
3 |
Closed due to snow |
ValueName |
ID |
ClearAndDry |
0 |
Damp |
1 |
Wet |
2 |
Rime |
3 |
DrySnow |
4 |
WetSnow |
5 |
Slush |
6 |
Ice |
7 |
RolledSnow |
8 |
FrozenRuts |
9 |
NotReported |
10 |
ValueName |
ID |
Description |
NotReported |
0 |
Not reported, marked as "/" |
Less10 |
1 |
10% or less of runway covered |
From11To25 |
2 |
11% to 25% of runway covered |
From26To50 |
3 |
26% to 50% of runway covered |
From51To100 |
4 |
51% to 100% of runway covered |
ValueName |
ID |
Description |
Glassy |
0 |
Waves height = 0 meters |
Rippled |
1 |
Waves height from 0 to 0.1 meters |
Wavelets |
2 |
Waves height from 0.1 to 0.5 meters |
Slight |
3 |
Waves height from 0.5 to 1.25 meters |
Moderate |
4 |
Waves height from 1.25 to 2.5 meters |
Rough |
5 |
Waves height from 2.5 to 4 meters |
VeryRough |
6 |
Waves height from 4 to 6 meters |
High |
7 |
Wave height from 6 to 9 meters |
VeryHigh |
8 |
Wave height from 9 to 14 meters |
Phenomenal |
9 |
Wave height over 14 meters |
None |
10 |
Not reported |
ValueName |
ID |
Description |
None |
0 |
Not specified |
Becoming |
1 |
A changes may happen or not |
Tempo |
2 |
Changes is definitely happen |
NoSignificantChanges |
3 |
|
ValueName |
ID |
Description |
Unknown |
0 |
Unknown code |
Blue |
1 |
Visibility is greater 5 mi, ceiling is greater 2500 ft |
White |
2 |
Visibility 3 3/8 - 5 mi, ceiling 1500 - 2500 ft |
Green |
3 |
Visibility 2 1/4 - 3 - 1/8, ceiling > 700 - 1500 ft |
Yellow |
4 |
Visibility 1 1/8 - 2 - 1/4, ceiling > 300 - 700 ft |
Amber |
5 |
Visibility 1/2 - 1 1/8 mi, ceiling 200 - 300 ft |
Red |
6 |
Visibility less 1/2 mi, ceiling less 200 ft |
ValueName |
ID |
NotSet |
0 |
North |
1 |
NorthEast |
2 |
East |
3 |
SouthEast |
4 |
South |
5 |
SouthWest |
6 |
West |
7 |
NorthWest |
8 |
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