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Chilean Volcano affects South America, air traffic again suspended at and north of Buenos Aires

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INFORMACION AERONAUTICA ACTUALIZADA/Chilean Volcano Puyehue began to erupt on Jun 4th, throwing ashes up to 10,000 meters (FL330) during Jun 5th almost immediately closing the airport of Bariloche (Argentina), the ash cloud extended to the east across Argentina causing local effects. Late Jun 6th the ash cloud was observed above FL350, the wind direction over the volcano changed from east to north driving the ash cloud to the north and further to the east now affecting the Buenos Aires region by Tuesday (Jun 7th). (TAH)

As a result flights into the Buenos Aires region have been suspended, international flights to Buenos Aires' Ezeiza Airport have been redirected, most flights out of and into Aeroparque Airport and Ezeiza Airport have been cancelled on Jun 7th, Aerolineas Argentinas and Austral cancelled all their flights in and out of Buenos Aires by Jun 7th 10:30L.

Airlines also cancelled flights in and out of Cordoba (Argentina), Iguasso Falls and Porto Alegre (Brazil), Santiago (Chile), Asuncion (Paraguay) and Montevideo (Uruguay) on Jun 7th and 8th due to the volcanic ashes.

Following another change of wind direction and dispersion of the remnants of Monday (Jun 6th) air traffic in Argentina (north of Bahia Blanca,BA including Buenos Aires), Brazil, Paraguay and Uruguay returned to normal by Wednesday (Jun 8th) evening, air traffic remained affected south of Bahia Blanca,BA (Argentina).

On Jun 9th air traffic in the Buenos Aires area was again temporarily suspended. Winds were estimated to change moving the remnants of the ash cloud in the Buenos Aires area out by evening of Jun 9th.

In the late evening of Jun 9th the ash cloud however continued to spread into Buenos Aires area and north of it prompting airlines to cancel flights in/out of e.g. Buenos Aires (Argentina), Montevideo (Uruguay), Porto Allegre,RS (Brazil) on Friday (Jun 10th).

Authorities confirmed reduced activity of the volcano on Jun 9th, also shown by the danger zones now being forecasted up to FL220 rather than FL300+ in the previous days.

The ash fall ceased around Bariloche on Jun 6th as result of the wind change permitting analysis of the ashes. The Bariloche Atomic Institute reported that the ashes contained no crystalline phases of quartz or cristobalite.

Volcano Ash Advisory issued Jun 10th 01:30Z:

FVAG01 SABM 100200 2011161 0219
VA ADVISORY – CORRECTION
DTG: 20110610/0130Z
VAAC: BUENOS AIRES
VOLCANO: CORDON CAULLE 1507-141
PSN: S4052 W07220
AREA: CHILE-C
SUMMIT ELEV: 1798M
ADVISORY NR: 2011/026
INFO SOURCE: GOES 12 – GFS MODEL
ERUPTION DETAILS: CONTINUOUS EMISSION
OBS ASH DATE/TIME: 10/0045Z
OBS ASH CLOUD: SFC/FL220 VOLCANIC ASH AREA FROM THE SUMMIT S4052
W07220 – S3900 W06900 – S3600 W06400 – S3300 W06000 – S3100 W05700 –
S2900 W05400 – S2800 W05000 – S3100 W04800
– S3700 W04700 – S4000 W05000 – S3900 W05400 – S4200 W05400 – S4500 –
W05300 – S4700 W04800 – S5200 W04700 – S5100 W05150 – S5200 W04800 –
S5000 W04800 – S4700 W05000 – S4500 W05300 –
S4200 W05500 – S3800 W05400 – S4000 W05100 – S3900 W04600 – S3300
W04600 – S2900 W04800 – S2800 W05200 – S3000 W05600 – S3200 W05900 –
S3500 W05300 – S3800 W06800 – S4000 W07000 – S4052
W07220
FCST ASH CLD +06HR: 100600Z SFC/FL220 S4052 W07220 – S3900 W06700 –
S3100 W06300 – S2700 W05700 – S2800 W05100 – S3000 W04500 – S3600
W04300 – S4200 W04900 – S4700 W05000 – S4500
W05300 – S3900 W05300 – S3700 W04800 – S3200 W05100 – S3300 W05500 –
S4200 W06500 – S4052 W07220
FCST ASH CLD +12HR: 101200Z SFC/FL220 S4052 W07220 – S3800 W06400 –
S3200 W06200 – S2500 W05900 – S2300 W05000 – S2600 W04300 – S3100
W03900 – S3600 W03900 – S4000 W04300 – S4100
W05300 – S3800 W04800 – S3300 W04900 – S3100 W04900 – S3400 W05500 –
S4000 W06000 – S4500 W06100 – S4052 W07220
FCST ASH CLD +18HR: 101800Z SFC/FL220 S4052 W07220 – S4000 W06200 –
S3000 W05900 – S2400 W05300 – S2300 W04900 – S2500 W04200 – S3000
W04000 – S3600 W04000 – S4100 W04300 – S4300
W05100 – S4000 W05000 – S3000 W04500 – S2800 W05000 – S3000 W05500 –
S4000 W05600 – S4500 W05900 – S4052 W07220
REMARKS: VA PLUME IS V

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