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<MeteorologicalBulletin gml:id="uuid.6fd740a9-b62a-4955-86db-66e56aa19bbc" xmlns="http://def.wmo.int/collect/2014" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://def.wmo.int/collect/2014 http://schemas.wmo.int/collect/1.2/collect.xsd"><meteorologicalInformation><VolcanicAshAdvisory gml:id="uuid.7f485af6-2e07-4fd4-b398-8b1668e9e7ff" permissibleUsage="OPERATIONAL" reportStatus="NORMAL" xmlns="http://icao.int/iwxxm/3.0" xmlns:aixm="http://www.aixm.aero/schema/5.1.1" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://icao.int/iwxxm/3.0 http://schemas.wmo.int/iwxxm/3.0/iwxxm.xsd"><issueTime><gml:TimeInstant gml:id="uuid.104b4b03-9805-4486-88c1-be4ab0e876c3"><gml:timePosition>2026-05-20T08:23:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.5cf341eb-cac2-4f67-9de4-08a66534f164" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.673a1e1a-6062-43a4-a0a9-c83b4fbb6097"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.160f7929-5d85-41fa-ade0-c60db3fe1d4d" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.e8e2c0e1-bebe-42a0-af29-a3c12f048302" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.067 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-05-20T08:23:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/498</advisoryNumber><informationSource>GOES-19. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>ONGOING VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.9947b5a9-2d69-43b0-9b07-76b76d70bb51" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.f69ff520-da26-4a27-ad7f-954f85ce2c38"><gml:timePosition>2026-05-20T08:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.03a8a8cf-230c-44f4-a4ef-c5d8d8311370"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.5d81125b-b466-4169-b6d3-dc49ae98bcfa"><aixm:upperLimit uom="FL">140</aixm:upperLimit><aixm:upperLimitReference>STD</aixm:upperLimitReference><aixm:lowerLimit>GND</aixm:lowerLimit><aixm:lowerLimitReference>SFC</aixm:lowerLimitReference><aixm:horizontalProjection><aixm:Surface axisLabels="Lat Long" gml:id="uuid.c82c74b9-b86d-4629-adfa-e30d8f50559f" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.050 -77.884 -0.000 -77.917 -0.083 -77.667 -0.067 -77.650 0.050 -77.884</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent><directionOfMotion uom="deg">315</directionOfMotion><speedOfMotion uom="[kn_i]">15</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.f98d256c-dfef-401b-96c4-02b1abaf1c0e" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.388825a3-f5ce-45db-92c0-68bde38c160a"><gml:timePosition>2026-05-20T14:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.c7f87a9c-f935-432a-8134-dc979d7c06ff"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.edfd2520-b7a6-43ee-902c-f17c90cad8f4"><aixm:upperLimit uom="FL">140</aixm:upperLimit><aixm:upperLimitReference>STD</aixm:upperLimitReference><aixm:lowerLimit>GND</aixm:lowerLimit><aixm:lowerLimitReference>SFC</aixm:lowerLimitReference><aixm:horizontalProjection><aixm:Surface axisLabels="Lat Long" gml:id="uuid.16d0c535-9e7b-489b-86ce-f42d7dde77e2" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.050 -77.884 -0.017 -77.917 -0.083 -77.667 -0.067 -77.667 0.050 -77.884</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><forecast><VolcanicAshForecastConditions gml:id="uuid.c9bf5281-a253-4deb-b5e0-6679c3e4a1d8" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.1e6002d2-1c4c-4d80-b3d1-03997dd20ffb"><gml:timePosition>2026-05-20T20:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.dcc85b3c-d81a-403d-ba96-fa4dcfba4f36"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.522c2f2b-cc49-48df-8708-f1aa70e1f9b2"><aixm:upperLimit uom="FL">140</aixm:upperLimit><aixm:upperLimitReference>STD</aixm:upperLimitReference><aixm:lowerLimit>GND</aixm:lowerLimit><aixm:lowerLimitReference>SFC</aixm:lowerLimitReference><aixm:horizontalProjection><aixm:Surface axisLabels="Lat Long" gml:id="uuid.59418f99-8573-4caf-948b-d6f18035ccf4" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.067 -77.884 -0.017 -77.917 -0.083 -77.667 -0.067 -77.650 0.067 -77.884</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><forecast><VolcanicAshForecastConditions gml:id="uuid.438d1f7e-4f48-4b89-93e5-c512532a931d" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.cc9bd0bf-1b58-49cd-a61e-a22a33d3c1bc"><gml:timePosition>2026-05-21T02:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.990f2eb0-7986-4a1b-94be-1f4417a02ded"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.bf60cbed-b060-40ba-a1e5-6dd9959a7570"><aixm:upperLimit uom="FL">140</aixm:upperLimit><aixm:upperLimitReference>STD</aixm:upperLimitReference><aixm:lowerLimit>GND</aixm:lowerLimit><aixm:lowerLimitReference>SFC</aixm:lowerLimitReference><aixm:horizontalProjection><aixm:Surface axisLabels="Lat Long" gml:id="uuid.eda29530-b32f-4289-9854-c89b886bce60" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.050 -77.884 -0.017 -77.917 -0.083 -77.650 -0.067 -77.667 0.050 -77.884</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>VA NOT DETECTED ON VARIOUS STLT PRODUCTS. WEBCAM SHOWS SUMMIT ACTVTY. NO CHG FCST TO MDL WINDS AT FL NXT 18 HR. ...KONON</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.518f543b-ca41-4e88-8588-1839447a08b1"><gml:timePosition indeterminatePosition="before">2026-05-20T14:30:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX25KNES200823_C_KNES_20260520082417.xml</bulletinIdentifier></MeteorologicalBulletin>