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Nabo Rings Danger and Caution over African Skies (and Spreading)

It is June 15, three days after Eritrea’s Nabo volcano erupted, and traffic is still being disrupted. Ethiopian Airlines announced flights to Northern Ethiopia, Dijbouti and Kartoum are still disrupted by the ash cloud, although their other flights are running smoothly. Care is being taken because the ash, which is mainly made up of silicates melts at about 1100°C and fuses inside the engine, often to catastrophic results.

The Toulouse VAAC (Volcanic Ash Advisories) maps out the ash cloud:

And the official text advisory of June 15 from VAAC is below:

VA ADVISORY (text)
DTG: 20110615/1200Z
VAAC: TOULOUSE
VOLCANO: NABRO 0201-101
PSN: N1322E04142
AREA: AFRICA-E
SUMMIT ELEV: 2218M
ADVISORY NR: 2011/09
INFO SOURCE: METEOSAT IMAGERY
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: STRONGER ERUPTION MAINLY PRODUCING SO2
OBS VA DTG: 15/1200Z
OBS VA CLD: SFC/FL200 N1105 E03935 – N1240 E04130 – N1105 E04300 –
N1105 E03935 FL200/400 N1310 E04205 – N1255 E03715 – N1455 E03815 –
N1310 E04205
FCST VA CLD + 6H: 15/1800Z SFC/FL200 N1215 E04155 – N1105 E04420 –
N1105 E04035 – N1215 E04155 FL200/400 N1310 E04215 – N1215 E04040 –
N1225 E03705 – N1435 E03735 – N1310 E04215
FCST VA CLD + 12H: 16/0000Z SFC/FL200 N1240 E04200 – N1205 E04330 –
N1050 E04440 – N1050 E03950 – N1240 E04200 FL200/400 N1305 E04155 –
N1230 E03900 – N1235 E03515 – N1415 E03535 – N1305 E04155
FCST VA CLD + 18H: 16/0600Z SFC/FL200 N1225 E04205 – N1205 E04430 –
N1015 E04530 – N1020 E03905 – N1225 E04205 FL200/400 N1430 E03405 –
N1305 E04150 – N1155 E03930 – N1235 E03400 – N1430 E03405
RMK: VOLCANIC CLOUD MAINLY COMPOSED OF SO2
NXT ADVISORY: NO LATER THAN 20110615/1800Z

See our article Hot Volcanoes Cool Air Travel for more details.

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