Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .
The full report is as follows:
FVXX20 at 03:57 UTC, 21/01/26 from KNES
VA ADVISORY
DTG: 20260121/0355Z
VAAC: WASHINGTON
VOLCANO: REVENTADOR 352010
PSN: S0004 W07739
AREA: ECUADOR
SOURCE ELEV: 11686 FT AMSL
ADVISORY NR: 2026/083
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: VA MOVG SSE
OBS VA DTG: 21/0330Z
OBS VA CLD: SFC/FL160 S0004 W07739 – S0016 W07729
– S0019 W07735 – S0005 W07740 – S0004 W07739 MOV
SE 5KT
FCST VA CLD +6HR: 21/0930Z SFC/FL160 S0005 W07739
– S0021 W07728 – S0023 W07741 – S0005 W07740 –
S0005 W07739
FCST VA CLD +12HR: 21/1530Z SFC/FL160 S0004
W07739 – S0005 W07739 – S0022 W07738 – S0018
W07749 – S0004 W07739
FCST VA CLD +18HR: 21/2130Z SFC/FL160 S0004
W07739 – S0018 W07729 – S0022 W07737 – S0005
W07740 – S0004 W07739
RMK: OCNL VA EMS OBS IN STLT IMAGERY MOVG APPRX
15NM SSE FM SUMMIT. VA FCST THRU T+18 HRS BASED
ON NWP MDL GUIDANCE BUT FL WINDS REMAIN LGT.
…COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20260121/1000Z