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<MeteorologicalBulletin gml:id="uuid.c274f9e4-3858-4bdd-b379-1124ea1cbb81" 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.557a1af2-cca5-4acf-9e14-fdb3ba0e9e5e" 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.d8505d4e-fd14-4e87-bc74-12744b3acdde"><gml:timePosition>2026-04-27T04:14:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.382d3b0d-a4c0-4961-8cf4-4ea176aaf27b" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.44a59a26-e9d7-4342-b710-ce7ee8239be9"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.1aaf0dd9-408f-4774-a4b9-f17c6404fd1a" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.d1feb626-2818-4d94-a0bc-e6b620e65cd5" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.083 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-04-27T04:14:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/408</advisoryNumber><informationSource>GOES-19. VONA. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>ONGOING VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.d9f39def-2038-4794-a94a-b1e72d8ae742" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.833d968e-6663-4d63-a063-3b69f69c9b40"><gml:timePosition>2026-04-27T03:40:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.e8094a00-cf1e-472a-9f30-b945ea7725f5"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.2a8065f3-d4c4-40bc-8c4a-46827a49d6b3"><aixm:upperLimit uom="FL">180</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.798811de-30a7-4770-97eb-d88dec981dc8" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.150 -77.800 0.033 -77.867 -0.083 -77.667 -0.067 -77.667 0.150 -77.800</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]">5</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.0a554659-5d9d-4a7e-8a35-d3cc442133e7" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.bf9c9175-1ce2-4eb9-ac63-283aa161b6a0"><gml:timePosition>2026-04-27T09:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.8f54b0a4-5ddb-46e2-997f-59ab84e717e0"><ashCloudExtent><aixm:AirspaceVolume 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gml:id="uuid.28368a00-d9d9-46a4-9293-a837908817f0"><gml:timePosition>2026-04-27T15:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.a178e636-b8bf-4bb3-9597-4eb61017f244"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.d060452c-ea1f-42fc-af22-c1fad59a496b"><aixm:upperLimit uom="FL">180</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.2377bb62-338e-491f-95d1-3151aa0a60e2" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.183 -77.834 0.083 -77.884 -0.067 -77.667 -0.083 -77.667 0.183 -77.834</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.82a4b736-1db5-4580-aba9-1c271e3d0b79" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.c85a3a71-c461-4ab7-8072-135a1bfb7f57"><gml:timePosition>2026-04-27T21:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.1ace73c3-3650-4db2-85ec-1bedc14cdeaf"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.349b7be3-e612-47e0-aff1-b9d95f3ae1af"><aixm:upperLimit uom="FL">180</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.726024aa-473f-4c3f-b33c-90d4334bd573" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.017 -77.967 -0.100 -77.967 -0.083 -77.667 -0.083 -77.667 0.017 -77.967</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>VAA UPDATED EARLY DUE TO VA HGT FM VONA. VA NOT DETECTED ON STLT DUE TO WX CLDS IN SUMMIT AREA. VONA INDICATES VA EMS. MDL WINDS AT FL FCST TO BACK BY T+18 HR BECMG MORE FM THE E. ...KONON</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.5217e92f-12a0-433a-b872-f0922858c4bf"><gml:timePosition indeterminatePosition="before">2026-04-27T10:15:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX23KNES270414_C_KNES_20260427041540.xml</bulletinIdentifier></MeteorologicalBulletin>