USGS Volcano Notice for Aviation - DOI-USGS-NMI-2026-07-15T19:41:39+00:00

VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)

WMMY01 PAVO 160013   
VONA
DTG:                    20260716/0013Z
VOLCANO:                AHYI SEAMOUNT 284141
PSN:                    N2026 E14502
AREA:                   NORTHERN MARIANA ISLANDS
SOURCE ELEV:            -180FT AMSL
NOTICE NR:              2026/02
CURRENT COLOUR CODE:    YELLOW
PREVIOUS COLOUR CODE:   UNASSIGNED
SVO:                    NORTHERN MARIANA ISLANDS
ACT STS:                HEIGHTENED UNREST
ONSET:                  NIL
DUR:                    NIL
VA CLD HGT:             NO VA CLD PRODUCED
HGT SOURCE:             NO VA CLD PRODUCED
MOV:                    NO VA CLD PRODUCED
CTC:                    USGS NORTHERN MARIANA DUTY SCIENTIST +1 (907) 786-7497
RMK:                    UNDERWATER VOLCANIC UNREST OR POSS ERUPTION OBSERVED IN SATELLITE IMAGES WITH SMALL
                        PLUMES OF DISCOLORED WATER SEEN OVER THE VOLCANO LOCATION. NO ACTIVITY AT OR ABV THE
                        OCEAN SFC COLOR CODE RAISED TO YELLOW.
NXT NOTICE:             A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOR CODE CHANGES
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