About: SIGWX

An Entity of Type: single, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

SIGWX is a Significant Weather Chart defined by ICAO. Weather charts being issued by World Area Forecast Centres (from meteorological offices in London and Washington), presenting the most important meteorological phenomena relevant especially for air traffic transport. WAFC publishes them in two formats * BUFR code * PNG images * SWH - High Level SIGWX (Flight level 250-630) * SWM - Medium Level SIGWX (Flight level 100-450) Weather phenomena:

Property Value
dbo:abstract
  • SIGWX is a Significant Weather Chart defined by ICAO. Weather charts being issued by World Area Forecast Centres (from meteorological offices in London and Washington), presenting the most important meteorological phenomena relevant especially for air traffic transport. WAFC publishes them in two formats * BUFR code * PNG images Charts are typically being issued every six hours (0, 6, 12, 18 UTC). The SIGWX charts only show the forecast for the specific hour, however it is common place for parameters such as the JetStream, CAT & CB to be interpreted +/- 3 hours of the chart validity time. . Prognoses are typically prepared for two ranges of heights: * SWH - High Level SIGWX (Flight level 250-630) * SWM - Medium Level SIGWX (Flight level 100-450) Weather phenomena: * Cloud - including information about cloud type, height of base and top, turbulence and icing risk * Clear Air Turbulence - including base and top height, strength of turbulence * Jet Stream - including base and top height, wind speed * Tropopause Height * Tropical Cyclone, Sandstorm * Volcanoes * Frontal system IMPORTANT NOTE: Amendment 74 to ICAO Annex 3 (effective 7 November 2007) eliminated the requirement for depiction of surface fronts and well-defined convergence zones (e.g. ITCZ) on WAFS SIGWX forecasts (in BUFR-code and PNG chart form). WAFC still publishes frontal bulletins, but they contain no data. (en)
dbo:wikiPageID
  • 27393579 (xsd:integer)
dbo:wikiPageInterLanguageLink
dbo:wikiPageLength
  • 2186 (xsd:nonNegativeInteger)
dbo:wikiPageRevisionID
  • 1074368610 (xsd:integer)
dbo:wikiPageWikiLink
dbp:wikiPageUsesTemplate
dct:subject
gold:hypernym
rdf:type
rdfs:comment
  • SIGWX is a Significant Weather Chart defined by ICAO. Weather charts being issued by World Area Forecast Centres (from meteorological offices in London and Washington), presenting the most important meteorological phenomena relevant especially for air traffic transport. WAFC publishes them in two formats * BUFR code * PNG images * SWH - High Level SIGWX (Flight level 250-630) * SWM - Medium Level SIGWX (Flight level 100-450) Weather phenomena: (en)
rdfs:label
  • SIGWX (en)
owl:sameAs
prov:wasDerivedFrom
foaf:isPrimaryTopicOf
is dbo:wikiPageWikiLink of
is foaf:primaryTopic of
Powered by OpenLink Virtuoso    This material is Open Knowledge     W3C Semantic Web Technology     This material is Open Knowledge    Valid XHTML + RDFa
This content was extracted from Wikipedia and is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License