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<MeteorologicalBulletin gml:id="uuid.0ba17f75-2b8f-4953-a1c5-06d9778eb4dc" 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.d23e7467-5f01-4dd4-82b5-fd8ed9b85beb" 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.b679d626-ee4b-43fe-b335-02788c59f6c6"><gml:timePosition>2026-05-17T07:59:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.707a5406-a58b-4713-aa84-0b4aa0657fe6" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.798f8977-9b32-4fea-b5af-4e846892b433"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.f41f63b6-0b38-4040-b21f-631e61ba387d" xmlns="http://def.wmo.int/metce/2013"><name>SANTA MARIA 342030</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.5981d3e6-f7b2-4ac6-8787-d2bd79789fdb" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>14.750 -91.550</gml:pos></gml:Point></position><eruptionDate>2026-05-17T07:59:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>GUATEMALA</stateOrRegion><summitElevation uom="[ft_i]">12287</summitElevation><advisoryNumber>2026/249</advisoryNumber><informationSource>GOES-19. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>PSBL VA EM.</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.55531868-0984-47ff-9440-138dca6e81db" isEstimated="false" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.64939638-86a6-4254-99d4-bb4c4f1acade"><gml:timePosition>2026-05-17T07:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.950b7dc5-cb40-41aa-be47-9cf5c7f200f5"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.58e6f14b-dd24-46f3-8772-babfbe3002f8"><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.4903727a-2568-425a-ab05-63b2134a4dc5" 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 -91.733 14.717 -91.733 14.750 -91.533 14.767 -91.533 14.767 -91.733</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.cdb4866d-2392-4c13-a92f-e9d60380835e" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.815da305-5342-4300-91ad-2bc02f5da65d"><gml:timePosition>2026-05-17T13:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.48b1c44e-8051-4639-a6bf-bcbffcd480be"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.ec810edd-f971-4cb9-80eb-55e9dcc0cd16"><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.8d8f5af7-3bdb-4757-8b5e-82af77435d41" 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 -91.767 14.700 -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.4ce225dd-af77-4984-ba10-e4d7fb9d7631" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.2b7d4707-8a96-4789-b772-cb0b5fd4162e"><gml:timePosition>2026-05-17T19:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.1779dc91-11a2-4be8-ae32-d627ccee78c2"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.b65a515d-2eb2-47f7-80fe-16cc117684e1"><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.5377afbc-8d54-4652-97da-5eca24af3b18" 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 14.750 -91.767 14.683 -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.28ee8839-2e20-419f-b67d-9a7c4d7573a2" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.4df0ab9c-0d35-431a-aaac-bce8c7754309"><gml:timePosition>2026-05-18T01:30:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.e92ab575-f602-4b88-9ea8-481e44f1a300"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.5ef88812-a544-44c2-a4b6-d356b47966ca"><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.a729dbb7-4ad6-455d-9523-add05aa837d5" 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 -91.767 14.683 -91.767 14.750 -91.533 14.767 -91.550 14.767 -91.767</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>VA CLD PSBLY OBSD MOVG W FM SUMMIT WITH LOW CONFDC ALTHO WEBCAM DOES NOT DIRECTLY SHOW VA CLD. WEBCAM DOES STILL SHOW LAVA ON THE FLANK WITH PERIODIC PEAKS IN BRIGHTNESS. NWP MDLS FCST LTLCG IN VA CLD MOVMT THRU T+18HRS. ...HOSLEY</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.a4ef1b78-9809-44f5-be2a-7ad3398b2a97"><gml:timePosition indeterminatePosition="before">2026-05-17T14:00:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX21KNES170759_C_KNES_20260517075951.xml</bulletinIdentifier></MeteorologicalBulletin>