Space-Weather-Advisory #01-50

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

SPACE WEATHER OUTLOOK #01- 50

2001 December 11 at 12:02 p.m. MST (2001 December 11 1902 UT)

**** SPACE WEATHER OUTLOOK ****

Summary For December 3-9

Space weather was at minor levels. Isolated category R1 (minor) radio
blackouts occurred on Dec. 4, 6, and 8 due to moderate-sized solar
flares. There were no geomagnetic storms or solar radiation storms
during the period. For a list of adverse system effects due to space
weather storms, please refer to the NOAA Space Weather Scales.

Outlook For December 12-18

Space weather is expected to be at minor to moderate levels. Isolated
category R1 (minor) radio blackouts are expected. There will also be a
chance for a category R2 (moderate) radio blackout. There will be a
slight chance for a category S1 (minor) solar radiation storm.

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.