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SÉCURITÉ

MF/HF/DSC communications unreliable near Guam (13-29.00N 144-50.00E) on 22 Oct

No longer in forceReceived 20 Oct 2026, 18:27 UTCArchived 22 Oct 2026, 17:03 UTC

Warning text

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NORTH PACIFIC. GUAM. 1. USCG REMOTE COMMUNICATION FACILITY GUAM 13-29.00N 144-50.00E MF, HF AND DSC SERVICES UNRELIABLE 221330Z TO 221600Z OCT. 2. CANCEL THIS MSG 221700Z OCT 26.

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Analysis

No longer in force

USCG remote communication facility at Guam will have unreliable MF, HF and DSC services affecting the area around 13-29.00N 144-50.00E. Unreliable service expected 22 Oct 1330-1600Z; message self-cancels 22 Oct 1700Z. Mariners should plan for possible loss of those radio services and use alternatives.

Expect unreliable MF/HF/DSC communications; use alternative means (VHF, satellite, phone) and exercise caution when relying on these services.

Type: Other · severity moderate
Location: Guam (13-29.00N 144-50.00E)
Validity: From 22 Oct 2026, 13:30 UTC
Until 22 Oct 2026, 17:00 UTC221330Z TO 221600Z OCT. CANCEL THIS MSG 221700Z OCT 26.
Activity periods: 22 Oct 2026, 13:30 UTC - 22 Oct 2026, 16:00 UTC (MF, HF and DSC services unreliable)
Hazards: unreliable MF communications, unreliable HF communications, unreliable DSC service

Worked out automatically from the warning text on 20 Oct 2026, 19:27 UTC. It can be wrong: the official warning text is the authority.

KeywordsUNRELIABLE

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