NOAA SEC Space Weather Advisory Outlook #04- 38
Official Space Weather Advisory issued by NOAA Space Environment Center
Boulder, Colorado, USA
SPACE WEATHER ADVISORY OUTLOOK #04- 38
2004 September 21 at 01:21 p.m. MDT (2004 September 21 1921 UTC)
**** SPACE WEATHER OUTLOOK ****
Summary For September 13-19
Category R1 (minor) radio blackouts were observed on 14 and 19 September
due to flare activity from active sunspot Region 672. Category G1
(minor) geomagnetic storming occurred on 14 September due to clouds of
magnetic material from a solar flare on the Sun that impacted Earth.
Category G1 (minor) geomagnetic storming occurred on 17 and 18
September due to high speed solar winds from a coronal hole on the Sun.
A category S1 (minor) and S2 (moderate) solar radiation storm was
observed on 13 – 15 September due to solar flare activity from active
sunspot Region 672.
Outlook For September 22-28
Category R1 (minor) radio blackouts are possible from active sunspot
Region 672 and Region 667 after they rotate back onto the visible disk.
Category G1 (minor) geomagnetic storming are possible due to clouds of
magnetic material from solar flares on the Sun that are expected to
impact Earth and from high speed solar winds from coronal holes on the
Sun. Category S1 (minor) solar radiation storms are possible due to
solar flare activity from various active sunspot regions on the Sun.
For current space weather conditions please refer to:
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.
