Kategorie: Climate Change

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 13500 ft (4100 m), or flight level 135, and moving at 15 kts in SW direction.
Original VAAC bulletin:

FVXX20 at 13:43 UTC, 21/08/26 from KNES
VA ADVISORY
DTG: 20260821/1341Z

VAAC: WASHINGTON

VOLCANO: FUEGO 342090
PSN: N1428 W09052

AREA: GUATEMALA

SOURCE ELEV: 12346 FT AMSL

ADVISORY NR: 2026/980

INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. 

ERUPTION DETAILS: VA PLUME OBSD

OBS VA DTG: 21/1250Z

OBS VA CLD: SFC/FL135 N1437 W09137 - N1423 W09105
- N1429 W09053 - N1426 W09050 - N1419 W09104 -
N1431 W09140 - N1437 W09137 MOV SW 15KT 

FCST VA CLD +6HR: 21/1900Z SFC/FL135 N1429 W09053
- N1426 W09050 - N1410 W09104 - N1419 W09150 -
N1428 W09148 - N1417 W09108 - N1429 W09053 

FCST VA CLD +12HR: 22/0100Z SFC/FL135 N1429
W09053 - N1428 W09051 - N1356 W09132 - N1404
W09139 - N1429 W09053 

FCST VA CLD +18HR: 22/0700Z SFC/FL135 N1501
W09139 - N1429 W09053 - N1425 W09053 - N1453
W09144 - N1501 W09139 

RMK: VA PLUME OBSD ON STLT IMG. FQNT EMS SEEN ON
WEBCAM. NWP MDL FCST VA EMS GEN SW MOVMT THRU
T+12, THEN VA EMS MOVMT NW THRU T+18. FL ESTD
FROM WEBCAM. ...BUTLER

NXT ADVISORY: WILL BE ISSUED BY 20260821/1945Z

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140.
Original VAAC bulletin:

FVXX22 at 11:24 UTC, 21/08/26 from KNES
VA ADVISORY -CORRECTION
DTG: 20260821/1122Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0004 W07739

AREA: ECUADOR

SOURCE ELEV: 11686 FT AMSL

ADVISORY NR: 2026/851

INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS. 

ERUPTION DETAILS: VA EMS ONGOING

OBS VA DTG: 21/1050Z

OBS VA CLD: SFC/FL140 N0007 W07753 - S0005 W07738
- S0005 W07740 - N0003 W07756 - N0007 W07753 MOV
NW 25KT 

FCST VA CLD +6HR: 21/1700Z SFC/FL140 N0009 W07753
- S0004 W07739 - S0005 W07740 - N0005 W07756 -
N0009 W07753 

FCST VA CLD +12HR: 21/2300Z SFC/FL140 N0011
W07751 - S0004 W07739 - S0005 W07740 - N0008
W07753 - N0011 W07751 

FCST VA CLD +18HR: 22/0500Z SFC/FL140 N0005
W07756 - S0004 W07739 - S0005 W07739 - N0001
W07757 - N0005 W07756 

RMK: COR FOR SOURCE. VONA RCVD RPRTNG VA EMS UP
TO FL 140. VA EMS OBSD ON STLT IMG. FQNT VOL
ACTIVITY SEEN ON WEBCAM. NWP MDL FCST VA EMS
MOVNG WNW THRU T+18. ...BUTLER

NXT ADVISORY: WILL BE ISSUED BY 20260821/1715Z

Satellite image of Klyuchevskoy volcano on 21 Aug 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Tokyo warned of a volcanic ash plume rising to an estimated 18000 ft (5500 m), or flight level 180, and moving at 20 kts in E direction.
Original VAAC bulletin:

FVFE01 at 08:26 UTC, 21/08/26 from RJTD
VA ADVISORY
DTG: 20260821/0826Z
VAAC: TOKYO
VOLCANO: KLYUCHEVSKOY 300260
PSN: N5603 E16039
AREA: RUSSIA
SOURCE ELEV: 4754M AMSL
ADVISORY NR: 2026/24
INFO SOURCE: HIMAWARI-9
ERUPTION DETAILS: VA AT 20260821/0800Z FL180 EXTD E
OBS VA DTG: 21/0800Z
OBS VA CLD: SFC/FL180 N5608 E16039 - N5623 E16111 - N5625 E16153 - 
N5615 E16155 - N5609 E16113 - N5601 E16040 MOV E 20KT
FCST VA CLD +6 HR: 21/1400Z SFC/FL190 N5642 E16748 - N5620 E16713 - 
N5623 E16335 - N5603 E16038 - N5705 E16415
FCST VA CLD +12 HR: 21/2000Z SFC/FL190 N5727 E17155 - N5627 E17437 - 

N5613 E17357 - N5640 E16654 - N5603 E16038 - N5727 E16613
FCST VA CLD +18 HR: NO VA EXP
RMK: NIL
NXT ADVISORY: 20260821/1200Z=

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140.
Original VAAC bulletin:

FVXX20 at 04:44 UTC, 21/08/26 from KNES
VA ADVISORY
DTG: 20260821/0442Z

VAAC: WASHINGTON

VOLCANO: FUEGO 342090
PSN: N1428 W09052

AREA: GUATEMALA

SOURCE ELEV: 12346 FT AMSL

ADVISORY NR: 2026/978

INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. 

ERUPTION DETAILS: FREQUENT VA EMS

OBS VA DTG: 21/0410Z

OBS VA CLD: SFC/FL140 N1428 W09052 - N1428 W09052
- N1425 W09110 - N1428 W09110 - N1428 W09052 MOV
W 25KT 

FCST VA CLD +6HR: 21/1000Z SFC/FL140 N1430 W09110
- N1428 W09052 - N1428 W09052 - N1427 W09110 -
N1430 W09110 

FCST VA CLD +12HR: 21/1600Z SFC/FL140 N1432
W09107 - N1428 W09053 - N1428 W09052 - N1429
W09108 - N1432 W09107 

FCST VA CLD +18HR: 21/2200Z SFC/FL140 N1428
W09052 - N1428 W09052 - N1422 W09105 - N1425
W09107 - N1428 W09052 

RMK: VA EMS OBS IN WEBCAM AND STLT IMG EXT APRX
20NM W FM SUMMIT. A GEN W MVMT EXP THRU T+18.
FCST BASED ON STLT AND MDL WINDS. ...GATLING

NXT ADVISORY: WILL BE ISSUED BY 20260821/1045Z

Satellite image of Krakatau volcano on 21 Aug 2026

A ground report at 20/2348Z indicated volcanic ash up to FL020 moving northwest. Ash was not visible on satellite imagery due to weather clouds; forecasts are based on ground observations and models.
Original VAAC bulletin:

FVAU05 at 00:27 UTC, 21/08/26 from ADRM
VA ADVISORY
DTG: 20260821/0026Z
VAAC: DARWIN
VOLCANO: KRAKATAU 262000
PSN: S0606 E10525
AREA: INDONESIA
SOURCE ELEV: 155M AMSL
ADVISORY NR: 2026/117
INFO SOURCE: WEBCAM, GROUND REPORT
ERUPTION DETAILS: GROUND REPORT AT 20/2348Z OF VA TO FL020
 MOV NW
EST VA DTG: 21/0000Z
EST VA CLD: SFC/FL020 S0609 E10529 - S0609 E10435 - S0531
 E10452 - S0604 E10530 MOV NW 10KT
FCST VA CLD +6 HR: 21/0600Z SFC/FL020 S0604 E10528 - S0608
 E10528 - S0628 E10434 - S0547 E10438
FCST VA CLD +12 HR: 21/1200Z SFC/FL020 S0603 E10528 - S0610
 E10528 - S0615 E10430 - S0533 E10440
FCST VA CLD +18 HR: 21/1800Z SFC/FL020 S0610 E10528 - S0602
 E10431 - S0525 E10456 - S0604 E10529
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO
 OBSCURATION BY MET CLOUD, HOWEVER ERUPTION ASSUMED TO BE
 CONTINUOUS BASED ON GROUND REPORT. HEIGHT AND FORECAST BASED
 ON GROUND REPORT AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260821/0626Z=