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<MeteorologicalBulletin gml:id="uuid.991f79a2-e5ad-41f6-832f-297c3b178735" 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.82a9c718-6630-496e-b4f3-a5453abd6e6f" 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.e91bebcd-d5a5-4900-a22d-60df22f5545d"><gml:timePosition>2026-04-27T09:54:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.1e814cac-26d6-45bb-b0db-fca52767e1e8" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.fec79d3b-e989-4132-b6f2-346eab2230f0"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.13c1e003-45e8-468b-b230-cab5e6d34ac1" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.0a564ab4-bc88-449d-bf3c-51a4e8d9c7ef" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.083 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-04-27T09:54:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/409</advisoryNumber><informationSource>GOES-19. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>ONGOING VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.81e93b8d-ffb1-4a2c-b8c2-4dde2e6cb943" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.cc5fa110-c141-45be-8ec5-b3e8c318dc7f"><gml:timePosition>2026-04-27T09:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.3aacf5e5-30ce-485e-81d4-c934ab9243d0"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.53237590-2ba0-42dd-b2b2-f167f96c4b2d"><aixm:upperLimit uom="FL">160</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.6d39d488-a6dc-4112-ae72-154e33c58776" srsDimension="2" 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gml:id="uuid.6f65ba08-9348-4b1f-bda0-ec592f33a1f4"><gml:timePosition>2026-04-27T21:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.19db7408-759f-4dba-994e-22f93f05701c"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.49ec1918-5e02-44e4-8b7b-b8b52520d1e1"><aixm:upperLimit uom="FL">160</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.3943fe09-c334-43a8-a8cd-c9b32951742e" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.083 -77.467 -0.067 -77.667 -0.083 -77.650 0.000 -77.433 0.083 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gml:id="uuid.9a31c3f2-088e-47d7-a61f-0afa3608fa0c" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.083 -77.467 -0.067 -77.667 -0.083 -77.650 0.000 -77.433 0.083 -77.467</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>VA DETECTED ON STLT DUE TO THK WX CLDS IN SUMMIT AREA. WEBCAM SHOWS VA EMS. MDL WINDS AT FL FCST TO BACK NXT 6 HR BECMG MORE FM THE WSW. ...KONON</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.e44f2d5a-0ca2-4ccd-9e86-7534525bffe7"><gml:timePosition indeterminatePosition="before">2026-04-27T16:00:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX23KNES270954_C_KNES_20260427095612.xml</bulletinIdentifier></MeteorologicalBulletin>