Space Weather Outlook #00-51 5 Dec 2000
Official Space Weather Advisory issued by NOAA Space Environment Center
Boulder, Colorado, USA
SPACE WEATHER OUTLOOK #00-51
2000 December 05 at 11:40 a.m. MST (2000 December 05 1840 UT)
**** SPACE WEATHER OUTLOOK ****
Summary For November 27-December 3
Space weather reached moderate to strong (category G2 – G3) levels this
week due to geomagnetic storms. Coronal mass ejections, spawned from
last week’s major flare activity, intersected Earth during November 27
– 29 causing category G2 (moderate) to G3 (strong) geomagnetic storms.
Strong geomagnetic storms are typically associated with the following
system effects: power systems may require voltage corrections and false
alarms may be triggered on some protection devices; surface charging
may occur on satellite components, drag may increase on low-Earth-orbit
satellites, and corrections may be needed for satellite orientation
problems; intermittent satellite navigation and low-frequency radio
navigation problems may occur, high-frequency radio may be
intermittent, and aurora has been seen as low as Oregon and Illinois
(typically 50 degrees geomagnetic latitude). Isolated category R1
(minor) radio blackouts occurred on November 30. Minor radio blackouts
usually result in the following effects on the sunlit portion of Earth:
weak or minor degradation of high-frequency radio communication with
occasional loss of radio contact and low-frequency navigation signals
degraded for brief intervals.
Outlook For December 6-12
Space weather is expected to be at minor levels. There will be a chance
for category G1 (minor) geomagnetic storm conditions on December 9 due
to an expected increase in solar wind velocities related to a coronal
hole.
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.
