Other

Earthquake with magnitude of 7.4 occurred in vicinity 54-30.00N 160-48.00W at 160648Z jul

Gulf of Alaska · North Pacific · Alaska · NAVAREA XII 441/23

issued
2023-07-16 07:32Z
status
cancelled 2023-07-16 07:55Z (archive)
cancels
NAVAREA XII 440/23
authority
NTWC 0/23 160723Z JUL 23.
sea
Gulf of Alaska
position
55.739, -159.101
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

GULF OF ALASKA.
NORTH PACIFIC.
ALASKA.
1. EARTHQUAKE WITH MAGNITUDE OF 7.4
   OCCURRED IN VICINITY 54-30.00N 160-48.00W
   AT 160648Z JUL. TSUNAMI WAVES ARE POSSIBLE
   WHICH COULD CAUSE DAMAGE TO THE
   SURROUNDING COASTS.
2. TSUNAMI ACTIVITY IS FORECASTED TO START AT
   THE FOLLOWING TIMES:
   A. SAND POINT 55-20.19N 160-29.60W AT 0810Z.
   B. KODIAK 57-54.58N 152-23.69W AT 0835Z.
   C. COLD BAY 55-12.55N 162-42.85W AT 0935Z.
3. TSUNAMI WAVE HEIGHTS CANNOT BE PREDICTED
   AND MAY BE A SERIES OF WAVES WHICH COULD BE
   DANGEROUS FOR SEVERAL HOURS AFTER THE
   INITIAL WAVE ARRIVAL.
4. CANCEL NAVAREA XII 440/23.

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