Document: 6875 | Created: 17:16 11/04/2004 UTC | Help#:1-877-280-2811 | Page: 01
Description: Ash Cloud Forecast | London VAAC
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FVUK01 EGRR 041236 RRA
VOLCANIC ASH ADVISORY
ISSUED: 20041104/1200Z
VAAC: LONDON
VOLCANO: GRIMSVOTN 1703-01
LOCATION: N6416W01716
AREA: ICELAND
SUMMIT ELEVATION: 1725M
ADVISORY NUMBER: 2004/12
INFORMATION SOURCE: ICELANDIC MET SERVICE
AVIATION COLOUR CODE: UNKNOWN
ERUPTION DETAILS: VAAC LONDON HAS RECEIVED CONFIRMED REPORTS THAT
THE GRIMSVOTN VOLCANO HAS ERUPTED, ESTIMATED START 20041101/2200Z.
THE ICELANDIC MET OFFICE CONFIRM THAT THE ASH CLOUD HAS REACHED
FL400.
ERRUPTIONS HAVE BECOME LESS FREQUENT AND LESS POWERFULL. THE LAST
ERUPTION OF ASH TO FL400 WAS AT 03/0830Z.
THE LATEST REPORT FROM ICELAND MET WAS THAT ERRUPTIONS TO FL180 HAD
CEASED BY 031200Z AND THERE HAS BEEN NO RECENT SEISMIC ACTIVITY.
OBS ASH DATE/TIME: 04/0600Z
OBS ASH CLOUD: ASH NOW RESTRICTED TO BELOW 200 METRES OF THE SUMMIT
FCST ASH CLOUD + 6HR: 04/1800Z
SFC/FL200
NOTAMS as follow for BIRD
A0206/04 - VOLCANIC ERUPTION REPORTED SOUTH OF VOLCANO GRIMSVOTN 1703-01 NOMI NAL POSITION 6425N01719W ICELAND-S. VOLCANIC ASHCLOUD TOPS FL400. BIRD OACC WILL SEPARATE AIRCRAFT FROM AFFECTED AREA AS FOLLOWS. OCEANIC AIRCRAFT 60 NM PROCEDURAL SEPARATION OR 10 NM RADAR SEPARATION AS APPROPRIATE. DOMESTIC AIRCRAFT WITH THE APPROPRIATE DOMESTIC PROCEDURAL/RADAR SEPARATION FROM AREA BOUNDED BY: FL200 TO FL450 AREA 70N020W 75N020W 77N000W 72N000W 70N008W MOV NE. SFC TO FL200 AREA 64N018W 69N025W 70N020W 73N020W 73N000W 64N017W. MAINTAIN WATCH FOR NOTAM/SIGMET FOR AREA. GND FL450 03 NOV 21:05 UNTIL 04 NOV 08:00 ESTIMATED
A0211/04 - THE ERUPTION IN GRIMSVOTN 1703-01 NOMINAL POS. 6425N01719W HAS REDUCED SIGNIFICANTLY. CONTAMINATED AREA NOW BOUNDED BY: SFC TO 7.000 FEET AREA 64N018W 64N013W 62N017W 63N020W. MAINTAIN WATCH FOR NOTAM/SIGMET FOR AREA. SFC 7000 FT MSL 04 NOV 14:46 UNTIL 04 NOV 22:00 ESTIMATED
Icelandair flights unaffected, internal flights are sunject to some restrictions. Nice views on the approach to the island apparently, visible for several hundred miles