On 9/23/2026 2:41:02 PM, an earthquake occurred in Tonga potentially affecting 1 thousand in MMI IV. The earthquake had Magnitude 5.7M, Depth:10km.
Popocatépetl Volcanic Ash Advisory: ash plume to 20,000 ft (6,100 m) as of Sep 23, 09:26 UTC
Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 20000 ft (6100 m), or flight level 200.
Original VAAC bulletin:
FVXX24 at 09:47 UTC, 23/09/26 from KNES
VA ADVISORY
DTG: 20260923/0945Z
VAAC: WASHINGTON
VOLCANO: POPOCATEPETL 341090
PSN: N1901 W09837
AREA: MEXICO
SOURCE ELEV: 17693 FT AMSL
ADVISORY NR: 2026/344
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: DISCRETE VA EM.
OBS VA DTG: 23/0926Z
OBS VA CLD: SFC/FL200 N1913 W09846 - N1901 W09837
- N1900 W09837 - N1910 W09849 - N1913 W09846 MOV
NW 20KT
FCST VA CLD +6HR: 23/1530Z SFC/FL200 N1925 W09857
- N1901 W09837 - N1900 W09837 - N1918 W09902 -
N1925 W09857
FCST VA CLD +12HR: 23/2130Z NO VA EXP
FCST VA CLD +18HR: 24/0330Z NO VA EXP
RMK: SML VA EM LKLY OBSD BY WEBCAM AT 0900Z AND
OBSD BY STLT AFTER 0901Z MOVG NW. FL ESTD FM NWP
MDLS AND WEBCAM. NWP MDLS FCST LTLCG IN WINDS
THRU T+6HRS. ...HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20260923/1545Z
Semeru Volcanic Ash Advisory: ash plume to 15,000 ft (4,600 m) as of Sep 23, 09:51 UTC
Satellite image of Semeru volcano on 23 Sep 2026
Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150.
Original VAAC bulletin:
FVAU02 at 09:51 UTC, 23/09/26 from ADRM
VA ADVISORY
DTG: 20260923/0950Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1089
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: VA TO FL150 OBS AT 23/0010Z
EST VA DTG: 23/0930Z
EST VA CLD: SFC/FL150 S0808 E11249 - S0759 E11250 - S0746
E11314 - S0800 E11329 - S0816 E11323 - S0828 E11305 MOV SE
10KT
FCST VA CLD +6 HR: 23/1530Z SFC/FL150 S0809 E11249 - S0800
E11248 - S0743 E11313 - S0756 E11329 - S0821 E11320
FCST VA CLD +12 HR: 23/2130Z SFC/FL150 S0810 E11249 - S0801
E11248 - S0744 E11313 - S0802 E11327 - S0823 E11316
FCST VA CLD +18 HR: 24/0330Z SFC/FL150 S0808 E11248 - S0757
E11250 - S0753 E11325 - S0814 E11326 - S0826 E11308
RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGERY. VA
EMISSION IS EXPECTED TO BE ONGOING. HEIGHT AND MOVEMENT
BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL
GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260923/1550Z=