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<MeteorologicalBulletin gml:id="uuid.1ffa5eed-3ff4-40ce-a18c-8b144f215c96" 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.952d78c6-8f2b-47f2-ae7c-255a56a4e472" 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.ef6adf0a-2eb6-49bb-bec5-77ac7d377ba6"><gml:timePosition>2025-04-17T23:36:00Z</gml:timePosition></gml:TimeInstant></issueTime><issuingVolcanicAshAdvisoryCentre><Unit gml:id="uuid.260441fa-0c95-405f-b023-6a480178a7ab" xmlns="http://www.aixm.aero/schema/5.1.1"><timeSlice><UnitTimeSlice gml:id="uuid.416c7ce1-62b6-4d83-8097-7a3e00700992"><gml:validTime /><interpretation>SNAPSHOT</interpretation><name>WASHINGTON</name><type>OTHER:VAAC</type></UnitTimeSlice></timeSlice></Unit></issuingVolcanicAshAdvisoryCentre><volcano><EruptingVolcano gml:id="uuid.67a68572-34f6-4b68-ad99-70d9dadf2daf" xmlns="http://def.wmo.int/metce/2013"><name>POAS 345040</name><position><gml:Point axisLabels="Lat Long" gml:id="uuid.8b93e093-4ae7-42ad-b05b-9052d5cd57d2" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:pos>10.183 -84.217</gml:pos></gml:Point></position><eruptionDate>2025-04-17T23:36:00Z</eruptionDate></EruptingVolcano></volcano><stateOrRegion>COSTA_RICA</stateOrRegion><summitElevation uom="[ft_i]">8848</summitElevation><advisoryNumber>2025/037</advisoryNumber><informationSource>GOES-19. WEBCAM. NWP MODELS.</informationSource><eruptionDetails>CONTG OCNL TO FRQT VA EMS.</eruptionDetails><observation><VolcanicAshObservedOrEstimatedConditions gml:id="uuid.66cb063a-f417-485f-bd11-50db239ead53" isEstimated="false" status="IDENTIFIABLE"><phenomenonTime><gml:TimeInstant gml:id="uuid.c50e4444-03fb-4407-84b0-10678bcfbe3e"><gml:timePosition>2025-04-17T22:50:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudObservedOrEstimated gml:id="uuid.7cfb89cb-76b5-4c29-a26c-a64a40b228d0"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.e4fe73b1-c720-4a19-ba92-7f8b2f592275"><aixm:upperLimit uom="FL">100</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.05b5db1f-fd25-442b-850b-44e6c6fbe701" srsDimension="2" 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gml:id="uuid.21bbcc28-bf98-4e0f-a047-8338c57dc332"><gml:timePosition>2025-04-18T11:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.e3cfbaa3-f777-48a9-a928-d271a15f84c9"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.3a5c89d1-c673-4e41-8d99-73987b7cfcf6"><aixm:upperLimit uom="FL">100</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.3ba5423b-3028-43b3-9be8-cd86df811c37" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">10.200 -84.300 10.150 -84.283 10.183 -84.217 10.200 -84.217 10.200 -84.300</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.469fcadc-718b-44c1-9ea2-c81dba34aa3d" status="PROVIDED"><phenomenonTime><gml:TimeInstant gml:id="uuid.727804cb-9efc-49bf-88fe-0add09de1e4b"><gml:timePosition>2025-04-18T17:00:00Z</gml:timePosition></gml:TimeInstant></phenomenonTime><ashCloud><VolcanicAshCloudForecast gml:id="uuid.f6f66db0-0d42-4281-bb09-c8e2b2bd8496"><ashCloudExtent><aixm:AirspaceVolume gml:id="uuid.9b5b63a7-3175-48f7-8910-df37e9a24d86"><aixm:upperLimit uom="FL">100</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.e7ec5da0-9651-4979-92d9-ca12853cf4e5" srsDimension="2" srsName="http://www.opengis.net/def/crs/EPSG/0/4326"><gml:patches><gml:PolygonPatch><gml:exterior><gml:LinearRing><gml:posList count="5">10.217 -84.317 10.167 -84.300 10.183 -84.217 10.200 -84.217 10.217 -84.317</gml:posList></gml:LinearRing></gml:exterior></gml:PolygonPatch></gml:patches></aixm:Surface></aixm:horizontalProjection></aixm:AirspaceVolume></ashCloudExtent></VolcanicAshCloudForecast></ashCloud></VolcanicAshForecastConditions></forecast><remarks>MULT VA CLDS OBSD BY WEBCAM MOVG W THRU 2315Z BFR WX CLD CVR MOVD IN AND OBSCD CRATER. VA NOT OBSD BY STLT DUE TO WX CLD CVR. OBS BASED ON WEBCAM EMS AND NWP MDLS. NWP MDLS FCST VA TO MOV WSW BY T+6HRS. ...HOSLEY</remarks><nextAdvisoryTime><gml:TimeInstant gml:id="uuid.30c99f62-76da-4fb8-ac2c-89de58582a83"><gml:timePosition indeterminatePosition="before">2025-04-18T05:30:00Z</gml:timePosition></gml:TimeInstant></nextAdvisoryTime></VolcanicAshAdvisory></meteorologicalInformation><bulletinIdentifier>A_LUXX25KNES172336_C_KNES_20250417233817.xml</bulletinIdentifier></MeteorologicalBulletin>