Space Weather Outlook #00-47 2000 October 31

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

SPACE WEATHER OUTLOOK #00- 47

2000 October 31 at 11:04 a.m. MST (2000 October 31 1804 UT)

**** SPACE WEATHER OUTLOOK ****

Summary For October 23-29

Space weather reached minor levels. Isolated category R1 (minor) radio
blackouts occurred on during Oct. 27 – 28. R1 blackouts typically cause
minor degradation of high-frequency radio communication on the sunlit
side of Earth resulting in occasional loss of radio contact. R1 radio
blackouts are also associated with brief degradation of low-frequency
navigation signals. A category S1 (minor) solar radiation storm
occurred on Oct. 26 following a solar flare from beyond the Sun’s west
limb. S1 storms usually cause minor effects on high frequency radio
communication in the polar regions. Category G1 (minor) geomagnetic
storms occurred during Oct. 28 – 29 due to a CME passage at Earth. G1
storms typically result in minor impacts on power systems and satellite
operations.

Outlook For November 1-7

Space weather is expected to remain at minor levels. Isolated category
R1 (minor) radio blackouts will be possible during the week. There will
be a chance for brief category G1 (minor) geomagnetic storms on
November 1.

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 or
(303) 497-5127. The NOAA Public Affairs contact is Barbara McGehan
at bmcgehan@boulder.noaa.gov or (303) 497-6288.