Overall Green Volcanic eruption alert for Krakatau in Indonesia on 31 Mar 2023 07:40 UTC

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Overall Green alert Volcanic eruption for Krakatau

in Indonesia

Volcano Ash Advisories for air traffic

Although Volcano Ash Advisories (VAAC) are not intended for assessing humanitarian impact, the observations of the plume are relevant for understanding local impact. The actual impact (like ash fall) depends on the type of eruption and is not known.

Click on the messages list to visualize on the right the detailed text.

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

31/03 07:40

28/03 18:00 2023-34 DARWIN

28/03 01:04 2023-30 DARWIN

27/03 21:35 2023-29 DARWIN

Volcanic Ash Advisory issued on 2023-03-31 at 07:40 UTC.

Key information extracted from original VAA message :

Original Message :

Volcanic Ash Advisory issued on 2023-03-28 at 18:00 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash reported to flight level 30 (900m) at 28 1741 UTC.
Cvghm reported eruption to flight level 30 (900m) at 28/1741z. Volcanic ash not discernible on satellite img due to obscuration by meteorological cloud. Height and forecast based on ground report and model guidance. Advisory will be reissued if new information is received.

Original Message :

Received FVAU01 at 18:00 UTC, 28/03/23 from ADRM
VA ADVISORY
DTG: 20230328/1800Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SUMMIT ELEV: 155M
ADVISORY NR: 2023/34
INFO SOURCE: CVGHM, HIMAWARI-9, WEBCAM
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: VA REPORTED TO FL030 AT 28/1741Z
EST VA DTG: 28/1741Z
EST VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND
SFC/FL030 300/05KT
FCST VA CLD +6 HR: 28/2341Z NOT AVBL
FCST VA CLD +12 HR: 29/0541Z NOT AVBL
FCST VA CLD +18 HR: 29/1141Z NOT AVBL
RMK: CVGHM REPORTED ERUPTION TO FL030 AT 28/1741Z. VA NOT
DISCERNIBLE ON SAT IMG DUE TO OBSCURATION BY MET CLOUD.
HEIGHT AND FCST BASED ON GROUND REPORT AND MODEL GUIDANCE.
ADVISORY WILL BE REISSUED IF NEW INFORMATION IS RECEIVED.
NXT ADVISORY: NO FURTHER ADVISORIES=

Volcanic Ash Advisory issued on 2023-03-28 at 01:04 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash emission to flight level 70 (2100m) at 28 0043 UTC.
Cvghm reported eruption to flight level 70 (2100m) move north east at 28/0043z. Volcanic ash not discernible on satellite img due to obscuration by meteorological cloud. Height and winds based on ground report and jakarta 27 1200 UTC sounding. Advisory will be reissued if new information is.

Original Message :

Received FVAU02 at 01:04 UTC, 28/03/23 from ADRM
VA ADVISORY
DTG: 20230328/0104Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SUMMIT ELEV: 155M
ADVISORY NR: 2023/30
INFO SOURCE: CVGHM, HIMAWAWI-9
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: VA EMISSION TO FL070 AT 28/0043Z
OBS VA DTG: 28/0050Z
OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND
SFC/FL070 250/10KT
FCST VA CLD +6 HR: 28/0650Z NOT AVBL
FCST VA CLD +12 HR: 28/1250Z NOT AVBL
FCST VA CLD +18 HR: 28/1850Z NOT AVBL
RMK: CVGHM REPORTED ERUPTION TO FL070 MOV NE AT 28/0043Z. VA
NOT DISCERNIBLE ON SAT IMG DUE TO OBSCURATION BY MET CLOUD.
HEIGHT AND WINDS BASED ON GROUND REPORT AND JAKARTA 27/1200Z
SOUNDING. ADVISORY WILL BE REISSUED IF NEW INFORMATION IS

Volcanic Ash Advisory issued on 2023-03-27 at 21:35 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash reported to flight level 30 (900m) at 27 2112 UTC.
Cvghm reported eruption to flight level 30 (900m) move north east on 27 2112 UTC vona. Volcanic ash not discernible on satellite img due to obscuration by meteorological cloud. Height and winds based on ground report and jakarta 27 1200 UTC sounding. Advisory will be reissued if new information is received.

Original Message :

Received FVAU02 at 21:35 UTC, 27/03/23 from ADRM
VA ADVISORY
DTG: 20230327/2135Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SUMMIT ELEV: 155M
ADVISORY NR: 2023/29
INFO SOURCE: CVGHM, HIMAWARI-9
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: VA REPORTED TO FL030 AT 27/2112Z
OBS VA DTG: 27/2120Z
OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND
SFC/FL030 240/05KT
FCST VA CLD +6 HR: 28/0320Z NOT AVBL
FCST VA CLD +12 HR: 28/0920Z NOT AVBL
FCST VA CLD +18 HR: 28/1520Z NOT AVBL
RMK: CVGHM REPORTED ERUPTION TO FL030 MOV NE ON 27/2112Z
VONA. VA NOT DISCERNIBLE ON SAT IMG DUE TO OBSCURATION BY
MET CLOUD. HEIGHT AND WINDS BASED ON GROUND REPORT AND
JAKARTA 27/1200Z SOUNDING. ADVISORY WILL BE REISSUED IF NEW
INFORMATION IS RECEIVED.
NXT ADVISORY: NO FURTHER ADVISORIES=

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