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<MeteorologicalBulletin gml:id="uuid.3a8e4c87-2f5a-4f26-9237-33c11649cd1d" 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.1503e1bd-32a0-4396-84ca-9bcf83304b90" 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.5ade2c68-d81b-4d16-b6e4-b8e4f0efc6a8"><gml:timePosition>2026-03-29T21:38:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.eef94f89-7126-4ff7-8d1d-47f34b630b40" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.2078d0c4-befc-4f83-b236-4084aa730a5f"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.f0a5deff-63f1-4e32-bdf7-02052afdd318" xmlns="http://def.wmo.int/metce/2013"><name>SANTA MARIA 342030</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.56843fe1-2eb0-4e96-a9b0-90f185f1c148" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>14.750 -91.550</gml:pos></gml:Point></position><eruptionDate>2026-03-29T21:38:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>GUATEMALA</stateOrRegion><summitElevation uom="[ft_i]">12287</summitElevation><advisoryNumber>2026/163</advisoryNumber><informationSource>GOES-19. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>PSBL VA EMS</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.cc3e1369-86eb-46bb-bd99-7bc9ebb071f9" isEstimated="true" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.a2847c23-0657-4516-af8a-3733ac8e8709"><gml:timePosition>2026-03-29T21:10:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.01295538-aaac-4135-a488-e927170c42c0"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.eb867416-6b65-4a11-be82-e950ca116cc4"><aixm:upperLimit uom="FL">130</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.54715f52-6f04-431f-9d29-d012125f2143" 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 -91.717 14.683 -91.733 14.733 -91.533 14.767 -91.533 14.817 -91.717</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]">5</speedOfMotion></VolcanicAshCloudObservedOrEstimated></ashCloud></VolcanicAshObservedOrEstimatedConditions></observation><forecast><VolcanicAshForecastConditions gml:id="uuid.7985fa80-3cb5-43d3-9704-fb7ba46ee6de" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.da9b42cb-666f-41f1-b684-dc2cf3350624"><gml:timePosition>2026-03-30T03:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.4e2f0b08-bb98-4ed9-9265-0a60baa30b38"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.80a55575-4e81-4bec-b696-cb286fc2ae4c"><aixm:upperLimit uom="FL">130</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.1160007f-0940-4976-9b78-96134c741e6f" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">14.934 -91.800 14.800 -91.867 14.733 -91.533 14.767 -91.533 14.934 -91.800</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.cd60d7f3-beb2-4d74-bad3-d4da7b495960" status="NO_VOLCANIC_ASH_EXPECTED"><phenomenonTime><gml:TimeInstant gml:id="uuid.83f941ac-b678-49ab-91a5-a66826e09343"><gml:timePosition>2026-03-30T09:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime></VolcanicAshForecastConditions></forecast><forecast><VolcanicAshForecastConditions gml:id="uuid.db52604b-e186-41ab-9c33-d8724c31b89a" status="NO_VOLCANIC_ASH_EXPECTED"><phenomenonTime><gml:TimeInstant gml:id="uuid.12e4cf20-d8ff-4083-829f-bf100b657888"><gml:timePosition>2026-03-30T15:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime></VolcanicAshForecastConditions></forecast><remarks>VA EMS NOT OBS ON STLT DUE TO WX CLD CVR. WEBCAM SHOWS OCNL EMS ONGOING IN CLD BRKS. VA LKLY MVG W, WITH A SHFT TWD THE NW EXP THRU T+6 ACCORDING TO NWP MDLS. ...EVANS</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.6ba13e7c-6288-45ee-b592-8e59cba12cf3"><gml:timePosition indeterminatePosition="before">2026-03-30T03:45:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX24KNES292138_C_KNES_20260329214004.xml</bulletinIdentifier></MeteorologicalBulletin>