Volcanic Ash Advisory Center Washington (VAAC) issued the following report:
FVXX22 at 03:56 UTC, 31/12/25 from KNES
VA ADVISORY
DTG: 20251231/0354Z
VAAC: WASHINGTON
VOLCANO: RUIZ 351020
PSN: N0453 W07519
AREA: COLOMBIA
SOURCE ELEV: 17319 FT AMSL
ADVISORY NR: 2025/589
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VONA RCVD
EST VA DTG: 31/0320Z
EST VA CLD: SFC/FL190 N0454 W07519 – N0453 W07518
– N0444 W07522 – N0450 W07529 – N0454 W07519 MOV
SW 5KT
FCST VA CLD +6HR: 31/0930Z SFC/FL190 N0504 W07528
– N0454 W07519 – N0452 W07519 – N0453 W07534 –
N0504 W07528
FCST VA CLD +12HR: 31/1530Z NO VA EXP
FCST VA CLD +18HR: 31/2130Z NO VA EXP
RMK: RCNT VONA RPRT RCVD INDICATING VA EM MOVG
SW. VA NOT OBS IN STLT IMAGERY OR WEBCAM. VA FCST
THRU T+6 HRS BASED ON NWP MDL GUIDANCE BUT
LGT/VRBL FL WINDS EXP. …COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20251231/1000Z