774
fvxx01 egrr 221101
va advisory
dtg: 20110522/1200z
vaac: London
volcano: Grimsvotn 1703-01
psn: N6425 w01720
area: Iceland
summit elev: 1725
advisory nr: 2011/005
info source: Icelantic met office
aviation colour code: Unknown
eruption details: Grimsvotn erupted around
20110521/1900z. At 22/0900z plume height estimated by
radar 15-17km.
Obs va dtg: 22/1200z
obs va cld: Sfc/fl200 n6628 w02308 - n6333 w02607 - n6129
w02319 - n6145 w01421 - n6456 w01014 - n6725 w00834 -
n6519 w01709 - n6628 w02308 fl200/fl350 n6211 w01720 -
n6441 w01026 - n6747 w00619 - n6820 w01048 - n6747 w01252
- n6812 w01850 - n6655 w02201 - n6456 w02522 - n6303
w02053 - n6211 w01720 fl350/fl550 n6420 w01719 - n6602
w01326 - n6814 w01411 - n6834 w01813 - n6824 w02131 -
n6747 w02327 - n6506 w02505 - n6435 w02019 - n6420 w01719
fcst va cld +6hr: 22/1800z sfc/fl200 n6051 w01218 - n6313
w01252 - n7011 w00150 - n6849 w01207 - n6619 w01732 -
n6743 w02246 - n6747 w02855 - n6451 w02641 - n6258 w02940
- n6107 w02714 - n6051 w01218 fl200/fl350 n6222 w01720 -
n7045 w00128 - n7004 w00856 - n6944 w01828 - n6853 w02341
- n6704 w02918 - n6206 w02042 - n6222 w01720 fl350/fl550
n6446 w01709 - n6857 w01325 - n7004 w01828 - n6841 w02607
- n6751 w02940 - n6441 w02138 - n6446 w01709
fcst va cld +12hr: 23/0000z sfc/fl200 n6056 w00856 -
n6610 w01122 - n7228 e01255 - n7107 w00641 - n6921 w01817
- n6905 w02308 - n6751 w03251 - n6343 w03047 - n6007
w02907 - n6023 w00823 - n6056 w00856 fl200/fl350 n6201
w01635 - n6747 w01111 - n7211 e00955 - n7330 e00910 -
n7244 w00704 - n7114 w02042 - n6913 w02641 - n6738 w03121
- n6140 w02201 - n6201 w01635 fl350/fl550 n6422 w01658 -
n6952 w01444 - n7135 w01455 - n7030 w02629 - n6812 w03358
- n6519 w02500 - n6422 w01658
fcst va cld +18hr: 23/0600z sfc/fl200 n5922 w02855 -
n6046 e00023 - n6403 w01337 - n6841 w01004 - n7157 e01114
- n7244 e02740 - n7404 e01458 - n7330 w01444 - n6913
w03302 - n6738 w03432 - n6007 w02952 - n5922 w02855
fl200/fl350 n6145 w01517 - n6713 w01635 - n7301 e00504 -
n7224 e03412 - n7410 e02418 - n7527 w00749 - n7104 w02844
- n6659 w03528 - n6056 w02449 - n6145 w01517 fl350/fl550
n6451 w01602 - n6937 w01658 - n7244 w01410 - n7244 w02545
- n6659 w03816 - n6524 w03358 - n6641 w02556 - n6417
w01839 - n6451 w01602
rmk: Plume clearly visible from imo office in reykjavik .
Plume visible on infrared and ash imagery. Heavy ashfall
reported in areas around the volcano. Ashfall visible on
various webcams in se-iceland. Extreme lightning activity
still detected
nxt advisory: 20110522/1800z=