NOAA SEC Space Weather Advisory Outlook #02-35 — 27 Aug 2002

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

SPACE WEATHER ADVISORY OUTLOOK #02- 35

2002 August 27 at 01:52 p.m. MDT (2002 August 27 1952 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For August 19-25

Space weather reached strong levels over the past week. A category R3
(strong) radio blackout occurred on August 23rd, 7:12 p.m. MDT. The
source of this R3 was a large flare from an active sunspot region,
known to NOAA Space Environment Center Forecasters as Sunspot Region
69. This active region also produced category R1 (minor) and category
R2 (moderate) radio blackouts during most of the period. Solar
radiation storms reached the S1 (minor) level on August 21, 10:40 p.m.
MDT and the S2 (moderate) level on August 23, 7:40 p.m. MDT. These
solar radiation storms were also the result of activity from Sunspot
Region 69. The geomagnetic field reached category G1 (minor) level on
August 19 and 20. The geomagnetic field reached category G3 (strong)
level on August 21. For a list of adverse system effects due to space
weather storms, please refer to the NOAA Space Weather Scales.

Outlook For August 28-September 3

Space weather is expected to be at minor levels. Isolated category R1
(minor) radio blackouts are possible throughout the period.

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.