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<MeteorologicalBulletin gml:id="uuid.20df39b9-0ffe-4322-8e12-db9216519771" 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.a18dcc4f-cca2-430e-9eda-c52b27d0e6cc" 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.dc9bf2cd-bc22-4844-a76f-2b09f128bc6b"><gml:timePosition>2025-12-09T21:08:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.1921de1c-af62-48cb-8e91-7551342c9e1a" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.7e207a2f-32f0-4405-b099-c0bc168d4389"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.7dfd7aca-146b-4e71-915e-1f0c0dd49ad3" xmlns="http://def.wmo.int/metce/2013"><name>REVENTADOR 352010</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.f89340fc-0487-482f-8679-52b4f3384122" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>-0.083 -77.650</gml:pos></gml:Point></position><eruptionDate>2025-12-09T21:08:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>ECUADOR</stateOrRegion><summitElevation uom="[ft_i]">11686</summitElevation><advisoryNumber>2025/1254</advisoryNumber><informationSource>GOES-19. WEBCAM. NWP MODELS. VOLCAT.</informationSource><eruptionDetails>CONT VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.f8da13b5-35bf-440a-a551-5ee796508f3e" isEstimated="false" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.dcccedfe-5c59-48df-b9be-a417e911ba69"><gml:timePosition>2025-12-09T20:40:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.f238a549-a310-4e1e-9363-a8f841d512ff"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.8e252018-54dc-4445-9ed5-b78437c8610d"><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.4256f6e3-cf01-4b95-8678-d9f3b126d0e8" srsDimension="2" 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gml:id="uuid.2c68d0cb-7596-4027-be0d-c947cf1808a7"><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.6a54d036-7c69-4fd7-bc7b-2176177a9cee" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="4">0.167 -77.417 -0.067 -77.667 -0.350 -77.183 0.167 -77.417</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.973ac588-6496-4985-8c3c-a4bca15963df" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.766743aa-cafa-413c-9b13-014981b12724"><gml:timePosition>2025-12-10T08:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.9e8e934f-2b05-4428-b0f8-22c9ee7b623a"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.36ab1aaa-c044-4c93-8a86-f4878a202f80"><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.2ad07706-49ff-46cd-b2c1-decc9e4be7b5" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="4">-0.067 -77.650 -0.467 -77.867 -0.383 -77.100 -0.067 -77.650</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.7ad9e8da-9e53-427c-b04b-8bc46e4a00bb" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.b0878a8f-e53e-4764-a6ef-86a6f3229b82"><gml:timePosition>2025-12-10T14:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.4dfb679a-4edf-4bfe-9485-e8f9c7e9f811"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.b1ef07c6-1f17-41bd-8d47-986e3e0c856e"><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.04d6c632-b319-40e6-836d-245fac5d4bb4" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="4">-0.067 -77.650 -0.117 -78.250 -0.700 -77.750 -0.067 -77.650</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>CONT VA EMS OBS MOV ENE TO ESE FM SUMMIT IN STLT IMAGERY. FCST CONFIDENCE BEYOND T+6 REMAINS LOW DUE TO LGT AND VAR WINDS. VO ACT MODERATE. ...FISHER</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.63c450e7-6323-4a33-b1a4-221a0f8b2f0e"><gml:timePosition indeterminatePosition="before">2025-12-10T03:15:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX20KNES092108_C_KNES_20251209210944.xml</bulletinIdentifier></MeteorologicalBulletin>