Solar Flares May Disrupt GPS Signals

Official Space Weather Advisory issued by NOAA Space Environment Center
Boulder, Colorado, USA

SPACE WEATHER ADVISORY BULLETIN #06- 3
2006 December 06 at 8:28 a.m. MST (2006 December 06 1528 UTC)


**** RADIATION STORM EXPECTED ****


A minor (S1) radiation storm is expected sometime after 06/1530 UTC
(10:30 a.m. EST) due to yesterday's major solar flare (R3) from NOAA
sunspot Region 930. The energetic solar particles that drive these
radiation storms have been gradually climbing during the past 24 hours
and are now expected to reach minor levels. Region 930 also produced a
moderate (R2) flare at 06/0823UTC (3:23 a.m. EST) which may also be
contributing to the energetic particle counts. Minor radiation storms
may result in minor impacts on HF radio communication in the polar
regions.


Region 930 rotated into view as a large, magnetically complex sunspot
group and is expected to produce additional moderate flares with a good
chance for more major flares. Agencies impacted by solar flare radio
blackouts, radiation storms, and geomagnetic storms should closely
monitor conditions as Region 930 rotates across the Sun between now and
18 December.


Data used to provide space weather services are contribued by NOAA,
USAF, NASA, NSF, USGS, the International Space Environment Services and
other observatories, universities, and institutions. MOre information
is available at SEC's Web site http://sec.noaa.gov


Data used to provide space weather services are contributed by NOAA,
USAF, NASA, NSF, USGS, the International Space Environment Services
and other observatories, universities, and institutions. More
information is available at SEC's Web site http://sec.noaa.gov


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