Space Weather Outlook #00-39 5 September 2000

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

SPACE WEATHER OUTLOOK #00- 39

2000 September 05 at 10:45 a.m. MDT (2000 September 05 1645 UT)

**** SPACE WEATHER OUTLOOK ****

Summary For August 28-September 3

Space weather ranged from calm to moderate levels. A category G2
(moderate) geomagnetic storm occurred on August 29 as relatively
high-speed, coronal hole solar winds buffeted the Earth’s magnetic
field. Category G2 geomagnetic storms normally result in minor effects
on electrical power grids, especially at high latitudes, and on
satellite operations.

Outlook For September 6-12

Space weather is expected to reach minor to moderate levels. A category
G1 (minor) or G2 (moderate) geomagnetic storm is expected to occur on
September 07 -08, due to a partial halo CME caused by a solar filament
eruption that occurred on September 04. Isolated category R1 (minor)
radio blackouts are possible during the week. Should an R1 radio
blackout occur, expect the following system effects on the sunlit
portion of Earth: minor degradation of high-frequency radio
communication signals resulting in occasional loss of contact for
mariners and en route aviators, and brief degradation of low-frequency
navigation signals affecting maritime and general aviation
positioning.

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.