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<MeteorologicalBulletin gml:id="uuid.6875c584-7385-42a4-b901-ede8349d0c79" 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.c4ae00a0-2b20-44a6-99c5-ff49bf648a1a" 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.e5f7717a-c1fe-4504-a70e-974932a73639"><gml:timePosition>2026-08-04T17:44:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.6e095311-dafd-489e-9a9c-0a286f6c4e4a" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.b9be666d-99e2-4ba9-b272-2605e1d527a9"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.d0a5d5a5-6829-4efc-8b63-3d1e66e390fc" xmlns="http://def.wmo.int/metce/2013"><name>SANTA MARIA 342030</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.da43cadd-2716-41bb-89ce-0fc6f061ca39" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>14.750 -91.550</gml:pos></gml:Point></position><eruptionDate>2026-08-04T17:44:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>GUATEMALA</stateOrRegion><summitElevation uom="[ft_i]">12287</summitElevation><advisoryNumber>2026/442</advisoryNumber><informationSource>GOES-19. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>VA EMS OBS IN WEBCAM</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.8bb29749-33aa-4942-a578-7b034574774d" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.2dbca91f-9748-405b-b9fa-c59ee40be4fe"><gml:timePosition>2026-08-04T17:20:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.2216de1a-8d2d-4222-8c53-c581bf194e31"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.c5deb523-1145-40a2-a0ab-46a5cb5a38e9"><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.1d52b767-89bc-4f97-8ad8-3a8269e54084" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">14.817 -91.700 14.717 -91.700 14.750 -91.533 14.767 -91.533 14.817 -91.700</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent><directionOfMotion uom="deg">270</directionOfMotion><speedOfMotion uom="[kn_i]">10</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.97fe1bc8-dbf8-4b4b-a398-b7c12e9c5810" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.2af4f5ea-643a-4721-ad86-1d72b8060461"><gml:timePosition>2026-08-04T23:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.fc9f6d3f-f164-4797-8536-b8689bd87aa7"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.53ac878a-b1ef-4a15-a1bf-f3fbd992e7eb"><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.52cafcee-8052-49d9-8bf5-10fee6da22b5" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">14.767 -91.550 14.767 -91.783 14.667 -91.767 14.750 -91.533 14.767 -91.550</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.ccd318b2-593e-4932-9062-66b4869b65a9" status="NO_VOLCANIC_ASH_EXPECTED"><phenomenonTime><gml:TimeInstant gml:id="uuid.ac13456b-faa6-49ec-9ccb-dede21ccf1a1"><gml:timePosition>2026-08-05T05:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime></VolcanicAshForecastConditions></forecast><forecast><VolcanicAshForecastConditions gml:id="uuid.e451af8d-36ac-42de-b880-221308830b35" status="NO_VOLCANIC_ASH_EXPECTED"><phenomenonTime><gml:TimeInstant gml:id="uuid.b0740be1-d7f6-421c-a9c9-448a7d107f43"><gml:timePosition>2026-08-05T11:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime></VolcanicAshForecastConditions></forecast><remarks>VA EMS VSBL IN WEBCAM BUT NOT OBSD IN STLT IMG DUE TO MET CLDS. A MORE WSW MVMT EXP BY T+6 HRS. MVMT AND HGT BASED ON WEBCAM OBS AND NWP MDLS. ...BERTALAN</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.12d5ed17-4072-435e-a54c-32dfd52ee6c1"><gml:timePosition indeterminatePosition="before">2026-08-04T23:45:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX21KNES041744_C_KNES_20260804174530.xml</bulletinIdentifier></MeteorologicalBulletin>