Space Weather Outlook #01-44 — 30 Oct 2001
Official Space Weather Advisory issued by NOAA Space Environment Center
Boulder, Colorado, USA
SPACE WEATHER OUTLOOK #01-44
2001 October 30 at 12:50 p.m. MST (2001 October 30 1950 UT)
**** SPACE WEATHER OUTLOOK ****
Summary For October 22-28
Space weather reached strong (category 3) levels on the NOAA Space
Weather Scales due to radio blackouts and geomagnetic storms. A large
and magnetically complex sunspot group, referred to as Region 9672 by
NOAA space weather forecasters, produced major solar flares during
October 22 – 25 which resulted in category R2 (moderate) to R3 (strong)
radio blackouts. Isolated category R1 (minor) radio blackouts also
occurred during the period due to moderate-sized solar flares. A
relatively brief category S1 (minor) solar radiation storm occurred
during October 22 – 23 following major flare activity from Region 9672.
Category G1 (minor) to G3 (strong) geomagnetic storms occurred during
October 22 – 23 as a CME (coronal mass ejection) passed earth. Category
G1 to G2 (moderate) geomagnetic storms occurred on October 28, also due
to a CME passage. For a list of adverse system effects related to space
weather storms, please refer to the NOAA Space Weather Scales.
Outlook For October 31-November 6
Space weather is expected to range from minor to moderate levels.
Category R1 (minor) to R2 (moderate) radio blackouts are possible
during the period. There will also be a slight chance for an isolated
Category R3 (strong) radio blackout sometime during the outlook period.
There will be a slight chance for a category S1 (minor) solar radiation
storm. There will be a slight chance for category G1 (minor)
geomagnetic storm conditions 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.
