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<MeteorologicalBulletin gml:id="uuid.7f5139fa-28e3-4cdf-a4aa-26d5dbcff371" 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.7f79c451-cc02-46cd-933e-6b48254eef70" 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.2fc952ab-52ae-4788-a50e-2737dcd5fb10"><gml:timePosition>2026-05-04T11:27:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.b03e8fce-19f6-4d54-a105-4b78c7d4dc8b" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.d4e3ec38-1e23-41fb-a55a-299c560b9a64"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.81f0738a-c122-4f62-a207-1fa3ba618404" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.2f1e48e7-6ae8-4541-9224-684bcd0147e6" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.067 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-05-04T11:27:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/438</advisoryNumber><informationSource>GOES-19. VONA. WEBCAM. NWP MODELS. VOLCAT.</informationSource><eruptionDetails>ONGOING VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.ef8b9f3e-3642-452d-aaae-8ebaa236d92d" isEstimated="false" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.89a91902-3eb9-4285-9184-1066f58263a1"><gml:timePosition>2026-05-04T11:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.b97f3067-1165-4cde-a45b-97a548672165"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.f9d139bb-36b2-4ccc-8a52-d303c955eb4a"><aixm:upperLimit uom="FL">150</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.da03e26a-dec5-40fe-8310-5f6de7ad3147" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">-0.033 -77.783 -0.167 -77.733 -0.083 -77.633 -0.067 -77.650 -0.033 -77.783</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent><directionOfMotion uom="deg">270</directionOfMotion><speedOfMotion uom="[kn_i]">5</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.1baa8465-a4e0-4132-9c2e-9f1d8c6d75dd" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.f8943718-91e0-48a1-9546-a0ddef8f0077"><gml:timePosition>2026-05-04T17:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.3838af6f-eedc-4a6b-b8d6-03529733f8e9"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.d6873414-6075-4b05-8cc8-31b2b99468ed"><aixm:upperLimit uom="FL">150</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.399dcf34-01fe-49de-8f0c-9ed980730534" 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 -78.017 -0.217 -77.984 -0.083 -77.633 -0.067 -77.633 0.000 -78.017</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.c4aaa481-71c6-4653-a364-a29b7f25ff27" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.73c15d68-1216-4a22-8b69-f084e7dc0a60"><gml:timePosition>2026-05-04T23:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.a103293b-0a77-47b5-b32b-1a0539994f92"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.9fd93556-d255-42cd-b1a1-db0980c100be"><aixm:upperLimit uom="FL">150</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.c1778219-a135-4a65-8f40-d31777e87fc9" 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 -77.917 0.000 -78.017 -0.083 -77.633 -0.067 -77.633 0.183 -77.917</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.8f792f48-d0be-4449-b9d7-2d99191d7ccd" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.651bf57c-ac8d-4a82-ae00-bf62ecb790cb"><gml:timePosition>2026-05-05T05:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.45c3f230-13c2-405e-b7a9-dd70fa4f726b"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.2a6c5e26-e268-4884-96f0-b59ebb645c29"><aixm:upperLimit uom="FL">150</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.8062d198-98f1-43e2-80c8-219a8090a349" 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 -77.900 0.017 -78.000 -0.083 -77.633 -0.067 -77.633 0.183 -77.900</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>VONA RPRTS VA EMS AND WEBCAM SHOWS EMS TO FL150. VA EMS OBS ON STLT MVG WSW FM SUMMIT. NWP MDLS SUG MVMT TWD THE NW BY T+12. ...EVANS</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.2f6b6942-2473-4420-8eca-5ad15431356b"><gml:timePosition indeterminatePosition="before">2026-05-04T17:30:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX23KNES041127_C_KNES_20260504112909.xml</bulletinIdentifier></MeteorologicalBulletin>