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<MeteorologicalBulletin gml:id="uuid.2d4aa6e6-b582-400f-b8ee-b3c2725db037" 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.8ced6bb9-7f49-48b7-b4ec-d2657cb83796" 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.61b45bfb-8d7a-4af8-8f01-4c743f6f0888"><gml:timePosition>2026-04-21T14:10:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.9a27c2f6-c03f-4246-8611-56e4f7eaee12" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.78f18c84-d85d-4f70-a2d0-1d28ec5a341a"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.999ef4ff-922d-4aad-8f15-3f6c60177210" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.49a2cfe7-4c0d-4f3c-8434-183a17b96989" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.067 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-04-21T14:10:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/383</advisoryNumber><informationSource>GOES-19. VONA. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>ONGOING VA EMS.</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.412a08b8-9884-49f2-98ae-2766974466a7" isEstimated="false" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.af951a1f-df40-40c3-8377-1da1ae09ff93"><gml:timePosition>2026-04-21T13:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.96f6a04c-1db2-417b-9514-5b3c626c0b19"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.13065e14-39ba-4a04-90ae-4c0534f9d0ed"><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.c6d4ab03-63ec-417e-9f47-da3ebb93fa57" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="6">-0.067 -77.650 -0.083 -77.667 -0.183 -77.633 -0.233 -77.417 -0.067 -77.383 -0.067 -77.650</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]">10</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.e8cb0c8c-baef-4e87-880c-bc23b6dc3de6" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.c08c9cec-da28-49af-a75a-eb3408f32a31"><gml:timePosition>2026-04-21T19:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.66927aa5-6644-4985-afa4-04b8688c5a89"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.996efc2a-f1c2-4de2-967e-2e96ff78242d"><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.923c68a8-03aa-4172-97c9-191124a9f1e7" 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 -77.367 -0.067 -77.667 -0.083 -77.667 -0.117 -77.383 -0.017 -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.cef0fb18-6bcd-4725-8e65-77d9075a4eac" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.7a61884a-ee30-4565-9893-30b573ae4a37"><gml:timePosition>2026-04-22T01:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.81f3c90c-c55b-4245-97c1-e715fbb19112"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.75421dc0-01b2-4d7a-b780-fe6bc737d17f"><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.e04e600c-2d8c-4d3d-a43b-1194ef60518e" 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 -77.367 -0.050 -77.650 -0.100 -77.633 -0.117 -77.367 -0.017 -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.0ac6433d-19ec-4e79-91d8-31dd16986233" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.6c6c8177-0b92-49ab-93aa-5165352d747a"><gml:timePosition>2026-04-22T07:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.4166e795-6fe9-480e-a15d-18e079bbab6a"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.ebdab423-740a-47b6-aa4a-b5224fcc8820"><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.0abdac81-1ba2-46c9-bc18-0e7dbe32818f" 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 -77.633 -0.083 -77.667 -0.167 -77.400 -0.067 -77.383 -0.050 -77.633</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>INTERMITTENT SMALL VA PUFFS NOTED IN WEBCAM AND CONFIRMED BY VONA. LIGHT VA ALSO NOTED IN STLT IMAGERY. VA MOV TO ESE OF SUMMIT AND WAVERING FROM ESE TO E THRU THE FORECAST PERIOD. ...LEE</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.5f200d69-7cf3-4009-84f0-4db6b1f66814"><gml:timePosition indeterminatePosition="before">2026-04-21T20:15:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX23KNES211410_C_KNES_20260421141417.xml</bulletinIdentifier></MeteorologicalBulletin>