Status Report

Space Weather Outlook #01-11 — 20 Mar 2001

By SpaceRef Editor
March 20, 2001
Filed under ,

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


2001 March 20 at 02:59 p.m. MST (2001 March 20 2159 UT)


Summary For March 12-18

No space weather storms occurred. However, an Earth-directed coronal
mass ejection (CME) was detected on March 15.

Outlook For March 21-27

Space weather is expected to be at minor to moderate levels. The above
CME reached Earth early on March 19 and caused a geomagnetic storm
which was in progress at the time of this advisory. As a result of the
continuing storm and recent CME occurrences Category G1 (minor) to G2
(moderate) geomagnetic storm periods will be possible through March 22.
Category G2 geomagnetic storms are typically associated with the
following system effects: high latitude power systems may experience
voltage alarms with possible transformer damage during long duration
storms; possible changes in satellite drag affect orbital predictions
and corrective actions to satellite orientation may be needed by ground
control; and HF propagation can fade at higher latitudes. In addition,
aurora may be visible along the northern tier states. Isolated category
R1 (minor) radio blackouts will also be possible during the period.
Should an R1 radio blackout occur, expect minor degradation of
high-frequency radio communication on the sunlit side of Earth
resulting in occasional loss of radio contact; and low-frequency
navigation signals may be degraded for brief intervals.

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 or
(303) 497-5127. The NOAA Public Affairs contact is Barbara McGehan
at or (303) 497-6288.

SpaceRef staff editor.