Other

A S1 solar radiation storm has begun

Arctic · Radio Services · HYDROARC 232/11

issued: 2011-11-26 22:46Z
status: cancelled 2011-11-27 23:00Z (archive)
self-cancels: 2011-11-27 23:00Z
authority: MINTER 262230Z NOV 11.//
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

ARCTIC.
RADIO SERVICES.
1. A S1 SOLAR RADIATION STORM HAS BEGUN. THIS
   COULD HAVE A MINOR IMPACT ON HF RADIO
   COMMUNICATIONS IN THE POLAR REGIONS FOR THE
   NEXT 24 HOURS.
2. TUNE INTO RADIO STATION WWV OR WWVB FOR MORE
   INFORMATION. SEE NGA PUBLICATION 117, RADIO
   BROADCAST SIGNALS FOR STATION INFORMATION.
3. CANCEL THIS MSG 272300Z NOV.

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

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Other

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Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.