From: LARRY KLAES (ljk4_at_msn.com)
Date: Tue Oct 28 2003 - 11:36:11 PST
----- Original Message -----
From: Space Environment Center
Sent: Tuesday, October 28, 2003 2:32 PM
To: advisory-list-send_at_dawn.sec.noaa.gov
Subject: Space-Weather-Bulletin
Official Space Weather Advisory issued by NOAA Space Environment Center
Boulder, Colorado, USA
SPACE WEATHER ADVISORY BULLETIN #03- 3
2003 October 28 at 10:55 a.m. MST (2003 October 28 1755 UTC)
**** SOLAR ACTIVE REGION PRODUCES INTENSE SOLAR FLARE ****
The dynamic solar regions reported on 21 October continue to produce
high levels of solar activity. NOAA Region 486 produced a category R4
(severe) radio blackout with an associated category S3 (strong) solar
radiation storm on 28 October at 1110 UTC (6:10 A.M. EST). The
SOHO/LASCO instruments also observed a full halo coronal mass ejection
with this activity, which is Earth directed. This region is the second
largest in size this solar cycle.
As a result of this activity a category G4 (severe) geomagnetic storm is
expected with periods of category G5 (extreme) levels possible. The
solar radiation storm is also expected to continue at strong (G3)
levels for the next 48 hours.
Further major eruptions are possible from these active regions as they
rotate across the face of the sun over the next few days. Agencies
impacted by solar flare radio blackouts, geomagnetic storms, and solar
radiation storms may experience disruptions through this period. These
include spacecraft operations, electric power systems, HF
communications, and navigation systems.
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. For more
information, including email services, see SEC's Space Weather
Advisories Web site http://sec.noaa.gov/advisories or (303) 497-5127.
The NOAA Public Affairs contact is Barbara McGehan at
Barbara.McGehan_at_noaa.gov or (303) 497-6288.
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