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<MeteorologicalBulletin gml:id="uuid.f3bae251-6e77-40b4-8632-ca0599343997" 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.dfc4a514-d550-497b-819f-6c505a307875" 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.62060829-c476-4c7f-b95d-aaaeecce9fad"><gml:timePosition>2026-04-26T11:44:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.fc33d072-30e8-465c-b415-0692542c8623" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.b187d25b-c53b-48f0-8bf0-0a415780ceed"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.fa0a3a89-3eb4-492a-9d80-e6d9b267e6ea" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.ad92776e-92b7-4cab-8d56-2258b10c0344" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.067 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-04-26T11:44:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/405</advisoryNumber><informationSource>GOES-19. VONA. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>VA EMS OBS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.4f1553db-f283-4bc7-a74a-a2596c232a76" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.88736335-5dd8-4162-a1d5-98098f723e2c"><gml:timePosition>2026-04-26T11:10:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.936d75ca-25e8-43b6-bed0-ac093886c1cc"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.f4c3ec7a-d7ca-4182-bacf-06e21977c047"><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.7bc0be14-d385-41ee-951e-667c281ce732" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">-0.067 -77.667 -0.150 -77.767 -0.217 -77.667 -0.117 -77.567 -0.067 -77.667</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent><directionOfMotion uom="deg">225</directionOfMotion><speedOfMotion uom="[kn_i]">5</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.b0befecf-c1af-4fa8-834a-e70bb7fca5ec" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.985d0ced-b473-4764-8178-c4d464ef1345"><gml:timePosition>2026-04-26T17:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.ed20b017-5369-47c7-abef-3ef4c617f274"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.8f7a6379-9405-4686-b98c-299ed92f6267"><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.69bead52-6254-49bb-9887-86b3dac34d71" 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 -77.583 -0.033 -77.733 -0.150 -77.667 -0.050 -77.517 0.017 -77.583</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.d5b70a4e-d1c2-43dc-b9f1-90bd84e13ae7" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.6d6bb2b8-7998-4c17-b353-d0f692549ae0"><gml:timePosition>2026-04-26T23:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.042e3a98-2de1-4226-a980-ebd0a5703b15"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.04771b49-b21c-4cd4-a989-d8d1d65b59cb"><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.163e5b34-2dd5-4821-b76a-45fb1eab5a82" 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 -77.667 -0.000 -77.783 -0.133 -77.683 -0.083 -77.567 0.033 -77.667</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.b0dd5a3e-da88-4a87-8cc9-062f2512d514" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.8c37d16b-9877-499f-b010-7d1edfef964d"><gml:timePosition>2026-04-27T05:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.b78ec664-ec28-4864-8a87-1c5f1e44aa24"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.2b09e48a-263b-493f-ab79-93950835e127"><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.3e6d4bb5-97b7-4dca-8712-6d0c38543fd1" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.067 -77.750 -0.133 -77.717 -0.117 -77.600 0.050 -77.617 0.067 -77.750</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>VONA RCVD RPRTNG VA EMS UP TO FL160 MOVNG SW FM SUMMIT. VA EMS NOT OBS IN STLT IMG DUE TO HVY WX CLD CVR. VA EMS SEEN IN WEBCAM MOVNG SE FM SUMMIT. NWP MD GUIDANCE FCSTS LGT AND VARIABLE MOVMT GEN TO THE NW TO NE THRU T+18. HGT BASED ON VONA ...MONAGHAN</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.442aabdb-f5bf-40d8-9d29-2efa52eb8d49"><gml:timePosition indeterminatePosition="before">2026-04-26T17:45:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX23KNES261144_C_KNES_20260426114513.xml</bulletinIdentifier></MeteorologicalBulletin>