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<MeteorologicalBulletin gml:id="uuid.7c6d5955-0757-4e5a-94f6-6cc9d03495fb" 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.a6b30912-84f4-4408-8275-24562c46ef78" 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.ebd92fd7-02c5-41e2-9161-f47747a57292"><gml:timePosition>2026-04-23T12:11:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.8a629ec2-126b-4916-9d57-7399a19302b7" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.ce691491-f304-450d-b39f-5347479db643"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.5b0424e2-e8a1-4134-a259-9038ac136139" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.3cb645f8-8bb8-4cb4-8fcc-38e7d28dea00" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.067 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-04-23T12:11:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/391</advisoryNumber><informationSource>GOES-19. NWP MODELS.</informationSource><eruptionDetails>PSBL VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.e5353526-ce28-4672-84f4-e984ef66e1f8" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.b0cf18a6-e5f7-4463-9e33-eb39c8208f9f"><gml:timePosition>2026-04-23T11:40:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.73df3a79-2568-4e4a-a154-00f3e467c6b9"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.8431d08f-f7a3-4f13-892a-adc180fe59ab"><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.9662bd4a-ec3f-468c-ac6f-e56107697554" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.000 -77.483 -0.067 -77.667 -0.083 -77.667 -0.100 -77.467 0.000 -77.483</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent><directionOfMotion uom="deg">90</directionOfMotion><speedOfMotion uom="[kn_i]">5</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.00364f9b-9364-4ae6-bcf5-36b7584c5746" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.977d9c66-dbcc-46a7-9ab8-85c40763e578"><gml:timePosition>2026-04-23T17:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.fae0d524-110c-498d-859d-9ad133b3dbdf"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.71d885ac-8373-4271-b95b-4e6cf3e2f3a8"><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.8464da87-2f60-41da-8577-d0213969a1a2" 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 -77.367 -0.067 -77.667 -0.083 -77.667 -0.033 -77.317 0.083 -77.367</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.e9b74960-ee8c-4888-8d7f-dadc93b3b324" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.7a5ffbda-64d9-47f4-b3a4-4fea0c7a2b15"><gml:timePosition>2026-04-23T23:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.e00600fb-e9d3-4878-b79d-92ec1f54074e"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.ac2dbadb-49c8-4a98-9bea-b35dc4a835fa"><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.49b6d2e5-188c-4030-bb9d-836232dc5ea3" 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 -77.367 -0.067 -77.667 -0.083 -77.650 -0.033 -77.317 0.083 -77.367</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.087885cd-f271-4f1c-9009-9fb35876ceb3" status="NO_VOLCANIC_ASH_EXPECTED"><phenomenonTime><gml:TimeInstant gml:id="uuid.ddbac76c-35b3-4e46-bc74-036e50300c9d"><gml:timePosition>2026-04-24T05:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime></VolcanicAshForecastConditions></forecast><remarks>VA NOT OBS ON STLT DUE TO WX CLD CVR. EMS LIKELY TO CONT. NWP MDLS SUG ENE MVMT WITH LTLCG THRU T+12. ...EVANS</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.55772cb2-1e53-43ba-91d9-5e18ed6257c9"><gml:timePosition indeterminatePosition="before">2026-04-23T18:15:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX23KNES231211_C_KNES_20260423121237.xml</bulletinIdentifier></MeteorologicalBulletin>