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<MeteorologicalBulletin gml:id="uuid.4ffd2a1d-bf37-42b6-bb4d-81865a938939" 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.515b4fa0-31be-4c52-92f2-4d7560832293" 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.90af7549-940e-40dc-9af0-f18c60511bca"><gml:timePosition>2026-08-04T16:07:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.5bc04f6a-2d3a-4f73-a8c1-a6882668cdcb" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.30838a79-7d6c-48b9-9e0b-262f31bd139d"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.27075e8a-96e3-4a25-a9bd-88d613c4c18c" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.58180747-ac2e-4bef-bb47-47da6a5fecc6" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.083 -77.650</gml:pos></gml:Point></position><eruptionDate>2026-08-04T16:07:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2026/781</advisoryNumber><informationSource>GOES-19. NWP MODELS.</informationSource><eruptionDetails>PSBL VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.5f99d083-1568-41c6-95f7-1d8525913648" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.f6091980-0619-4118-94d9-3cd97d690258"><gml:timePosition>2026-08-04T15:40:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.0f095b8e-485e-45af-bcf2-96087d8d3dec"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.dcfe139a-7f40-4401-9df8-d50eefd4cf3c"><aixm:upperLimit uom="FL">140</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.de4f9995-840d-4d6f-8df5-96dd93940781" 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 -77.834 -0.033 -77.900 -0.083 -77.667 -0.067 -77.667 0.050 -77.834</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]">10</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.28a3ab3a-77ab-4455-afb2-414f84bd9cf7" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.f58ad144-1b01-4d07-b167-f92ad0d76461"><gml:timePosition>2026-08-04T21:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.f75d1f84-49a9-42c4-8bf6-345300e5e1ea"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.04257abc-fc53-4370-b598-339b0502c92c"><aixm:upperLimit uom="FL">140</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.de2a7191-de08-42b3-ae16-81904f265c7f" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.100 -77.917 -0.017 -77.984 -0.100 -77.650 -0.067 -77.650 0.100 -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.f1d48d93-6277-49f8-aa3f-111dcbc8846e" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.0d3c6dbd-731a-4328-ac9d-60116425e0e2"><gml:timePosition>2026-08-05T03:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.cdfa4dae-213c-4ee3-a56a-f543f36c30d3"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.e36f9853-cbb1-4757-84c2-2b994b70281a"><aixm:upperLimit uom="FL">140</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.f378c35a-dc43-4933-9ada-69002fc3429e" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">0.133 -77.834 0.050 -77.934 -0.083 -77.667 -0.067 -77.650 0.133 -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.d711a29f-4915-411c-a8be-c94acbee73a7" status="NO_VOLCANIC_ASH_EXPECTED"><phenomenonTime><gml:TimeInstant gml:id="uuid.32a05885-ec81-4c30-a95c-6bb5004f76b9"><gml:timePosition>2026-08-05T09:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime></VolcanicAshForecastConditions></forecast><remarks>VA EMS NOT OBSD IN STLT IMG PSBLY DUE TO MET CLDS. WNW MVMT EXP TO SHIFT MORE NW BY T+12 HRS. MVMT AND HGT BASED ON NWP MDLS. ...BERTALAN</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.5d9d4664-1c8d-4cee-9f2e-ccaa6fc3994b"><gml:timePosition indeterminatePosition="before">2026-08-04T22:00:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX22KNES041607_C_KNES_20260804160936.xml</bulletinIdentifier></MeteorologicalBulletin>