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<MeteorologicalBulletin gml:id="uuid.01c0a864-9bfb-4ac5-9c2e-b21ada8c804b" 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.7f089818-40b9-46cf-815b-bcc1af18fe06" 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.882d2b17-14e2-4add-8d4f-87159f870573"><gml:timePosition>2026-04-18T04:58:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.8589be3d-232e-4df8-9bb6-9236f83de1ed" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.5f9bac62-c419-466f-9480-15a2bd88e72e"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.989cebe0-fb82-4fc3-8385-f865171fdca3" xmlns="http://def.wmo.int/metce/2013"><name>SANGAY 352090</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.e139e702-60e1-471f-8551-b977470ed0a4" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-2.000 -78.333</gml:pos></gml:Point></position><eruptionDate>2026-04-18T04:58:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">17342</summitElevation><advisoryNumber>2026/425</advisoryNumber><informationSource>GOES-19. NWP MODELS.</informationSource><eruptionDetails>LKLY VA SIG OBSD.</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.f98ef061-eec0-4351-a544-32d781568c17" isEstimated="false" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.1d74e787-7af6-42be-8e82-e601d6298f19"><gml:timePosition>2026-04-18T04:20:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.6ca0de26-8b98-4afc-8c00-b631c45f5636"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.65c252da-8b70-4ba3-b2d9-fbdbeec9e3c6"><aixm:upperLimit uom="FL">210</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.147a91d6-19c4-4bca-ac40-c7d447ff1c2a" srsDimension="2" 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-77.967</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.7daae9aa-0ac2-497a-8449-be803d1e14c4" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.4f1bdcfd-863b-4ead-b27e-30bcbf647605"><gml:timePosition>2026-04-18T22:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.e90e2c06-7b93-47c9-bbf7-1b2470bec9a4"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.1e183614-dd0e-47c0-b3b9-fd8cd743a7c9"><aixm:upperLimit uom="FL">210</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.a2d20755-cece-439b-8f27-68c7a810b7ff" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">-1.833 -77.884 -2.000 -78.333 -2.017 -78.333 -2.117 -77.917 -1.833 -77.884</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>LKLY VA CLD OBSD ABT 15 NMI ENE OF SUMMIT. FL ESTD FM NWP MDLS. NWP MDLS FCST VA TO GENLY MOV NE THRU T+12HRS THEN E-ESE BY T+18HRS. ...HOSLEY</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.0b1c2eee-6c49-41bb-9283-8302bdf8bb7b"><gml:timePosition indeterminatePosition="before">2026-04-18T11:00:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX21KNES180458_C_KNES_20260418045927.xml</bulletinIdentifier></MeteorologicalBulletin>