On 8/4/2026 8:16:37 PM, an earthquake occurred in Indonesia potentially affecting 10 thousand in MMI IV. The earthquake had Magnitude 5.7M, Depth:35km.
Semeru Volcano Volcanic Ash Advisory: VA TO FL150 LAST REP 04/1744Z EST VA DTG: 04/1900Z to 15000 ft (4600 m)
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 05 kts in NE direction.
The full report is as follows:
FVAU02 at 19:15 UTC, 04/08/26 from ADRM
VA ADVISORY
DTG: 20260804/1920Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/886
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 LAST REP 04/1744Z
EST VA DTG: 04/1900Z
EST VA CLD: SFC/FL150 S0809 E11252 – S0757 E11244 – S0748
E11249 – S0743 E11259 – S0749 E11308 – S0759 E11313 – S0809
E11259 MOV NE 05KT
FCST VA CLD +6 HR: 05/0100Z SFC/FL150 S0809 E11252 – S0757
E11244 – S0747 E11253 – S0747 E11304 – S0759 E11313 – S0810
E11258
FCST VA CLD +12 HR: 05/0700Z SFC/FL150 S0808 E11251 – S0756
E11244 – S0746 E11252 – S0745 E11302 – S0759 E11313 – S0809
E11259
FCST VA CLD +18 HR: 05/1300Z SFC/FL150 S0810 E11258 – S0809
E11251 – S0755 E11244 – S0746 E11251 – S0746 E11304 – S0758
E11314
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD. VA HEIGHT AND FORECAST FROM HIMAWARI-9 SAT IMG,
GROUND REPORTS AND MODEL GUIDANCE. LOW CONFIDENCE IN FCST
DUE TO LIGHT AND VARIABLE WINDS.
NXT ADVISORY: NO LATER THAN 20260805/0120Z=
Sheveluch Volcano Volcanic Ash Advisory: POSS ERUPTION OBS AT 20260804/1340Z FL270 EXTD NE OBS VA DTG: 04/1420Z to 27000 ft (8200 m)
Satellite image of Sheveluch volcano on 4 Aug 2026
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 27000 ft (8200 m) altitude or flight level 270 .
The full report is as follows:
FVFE01 at 14:44 UTC, 04/08/26 from RJTD
VA ADVISORY
DTG: 20260804/1444Z
VAAC: TOKYO
VOLCANO: SHEVELUCH 300270
PSN: N5639 E16122
AREA: RUSSIA
SOURCE ELEV: 3283M AMSL
ADVISORY NR: 2026/323
INFO SOURCE: HIMAWARI-9
ERUPTION DETAILS: POSS ERUPTION OBS AT 20260804/1340Z FL270 EXTD NE
OBS VA DTG: 04/1420Z
OBS VA CLD: SFC/FL270 N5641 E16122 – N5658 E16154 – N5642 E16152 MOV
NE 25KT
FCST VA CLD +6 HR: 04/2020Z SFC/FL290 N5840 E16638 – N5756 E16703 –
N5648 E16458 – N5654 E16157 – N5725 E16440
FCST VA CLD +12 HR: 05/0220Z SFC/FL290 N5919 E17112 – N5654 E16748 –
N5730 E16604 – N5731 E16350 – N5757 E16739 – N5904 E16907 – N6012
E16856
FCST VA CLD +18 HR: 05/0820Z SFC/FL280 N5951 E17424 – N5815 E17313 –
N5709 E16957 – N5738 E16809 – N5906 E17130 – N6113 E16838
RMK: NIL
NXT ADVISORY: 20260804/1800Z=
Fuego Volcano Volcanic Ash Advisory: SIG VA EMS to 18000 ft (5500 m)
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 and is moving at 10 kts in W direction.
The full report is as follows:
FVXX20 at 09:18 UTC, 04/08/26 from KNES
VA ADVISORY
DTG: 20260804/0914Z
VAAC: WASHINGTON
VOLCANO: FUEGO 342090
PSN: N1428 W09052
AREA: GUATEMALA
SOURCE ELEV: 12346 FT AMSL
ADVISORY NR: 2026/903
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: SIG VA EMS
OBS VA DTG: 04/0830Z
OBS VA CLD: SFC/FL180 N1508 W09157 – N1433 W09053
– N1428 W09052 – N1426 W09054 – N1435 W09156 –
N1508 W09157 MOV W 10KT
FCST VA CLD +6HR: 04/1430Z SFC/FL180 N1515 W09215
– N1431 W09054 – N1428 W09052 – N1427 W09053 –
N1429 W09215 – N1515 W09215
FCST VA CLD +12HR: 04/2030Z SFC/FL180 N1442
W09141 – N1428 W09052 – N1428 W09053 – N1429
W09141 – N1442 W09141
FCST VA CLD +18HR: 05/0230Z SFC/FL180 N1438
W09127 – N1428 W09052 – N1428 W09053 – N1428
W09127 – N1438 W09127
RMK: VRY DENSE VA PLUME WITHIN 35 NM OF SUMMIT
MOVG W. MDTLY DENSE PLUME EXTENDED APROX 65 NM
WNW OF SUMMIT CURRENTLY. WEBCAM SHOWS CONS STG EMS
WITH LTG IN PLUME. LTLCHG FCST IN MDL WINDS AT FL
NXT 18 HR. …KONON
NXT ADVISORY: WILL BE ISSUED BY 20260804/1515Z
Lewotobi Volcano Volcanic Ash Advisory: VA TO FL090 REPORTED AT 04/0442Z EST VA DTG: 04/0550Z to 9000 ft (2700 m)
Satellite image of Lewotobi volcano on 4 Aug 2026
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 .
The full report is as follows:
FVAU04 at 06:11 UTC, 04/08/26 from ADRM
VA ADVISORY
DTG: 20260804/0620Z
VAAC: DARWIN
VOLCANO: LEWOTOBI 264180
PSN: S0833 E12246
AREA: INDONESIA
SOURCE ELEV: 1703M AMSL
ADVISORY NR: 2026/335
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL090 REPORTED AT 04/0442Z
EST VA DTG: 04/0550Z
EST VA CLD: SFC/FL090 S0834 E12248 – S0841 E12231 – S0838
E12220 – S0825 E12222 – S0823 E12233 – S0832 E12247 MOV W
10KT
FCST VA CLD +6 HR: 04/1150Z SFC/FL090 S0832 E12248 – S0834
E12248 – S0841 E12231 – S0837 E12220 – S0825 E12222 – S0823
E12233
FCST VA CLD +12 HR: 04/1750Z SFC/FL090 S0835 E12247 – S0834
E12216 – S0814 E12229 – S0831 E12248
FCST VA CLD +18 HR: 04/2350Z SFC/FL090 S0835 E12247 – S0834
E12217 – S0815 E12229 – S0831 E12248
RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGERY.
GROUND REPORTS INDICATE DISCRETE VA EMISSIONS ARE ONGOING.
VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND
REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260804/1220Z=