Space Weather Advisory Outlook #02-28

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

SPACE WEATHER ADVISORY OUTLOOK #02- 28

2002 July 09 at 02:31 p.m. MDT (2002 July 09 2031 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For July 1-7

Space weather increased to strong (category 3) levels during this first
week of July. A category R3 (strong) radio blackout peaked at 8:13 p.m.
MDT on July 2 (2002 July 03 0213 UTC). A category R2 (moderate) radio
blackout reached its peak at 2:10 p.m. MDT on July 3 (2002 July 03 2010
UTC). Both blackouts were due to major solar flares from a sunspot
group near the Sun’s southwest limb. Isolated category R1 (minor) radio
blackouts occurred during most days. A category S1 (minor) solar
radiation storm occurred on July 7 following a moderate-sized,
long-duration flare from just beyond the Sun’s southwest limb. NOAA
GOES satellites indicated the storm began at 12:30 p.m. MDT on July 7
(2002 July 07 1830 UTC) and continued as the period ended. There were
no geomagnetic storms during the period. For a list of adverse system
effects related to space weather storms, please refer to the NOAA Space
Weather Scales.

Outlook For July 10-16

Space weather is expected to be at minor levels. Isolated category R1
(minor) radio blackouts are likely. There is a chance for category G1
(minor) geomagnetic storm conditions on July 13 due to increased solar
wind velocities.

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@noaa.gov or (303) 497-6288.