NOAA SWPC Space Weather Bulletin #11- 43

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

SPACE WEATHER ADVISORY OUTLOOK #11- 43

2011 October 04 at 12:49 p.m. MDT (2011 October 04 1849 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For September 26-October 2

Category G1 (Minor) to G2 (Moderate) geomagnetic storms occurred 26 – 29 September due to CME passage and substorming.

A category S1 (Minor) solar radiation storm was observed 23 – 27 September due to solar activity from active sunspot Region 1302. Category R1 (Minor) radio blackouts were observed 26, 28 and 30 September to 02 October due to flare activity from active sunspot Regions 1302 and 1305.

Outlook For October 5-11

A category G1 (Minor) geomagnetic storm is possible 05 – 06 October due to coronal mass ejection passage.

Isolated R1 (Minor) radioation storms are possible through 07 October from sunspot Region 1305.

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 SWPC’s Web site http://swpc.noaa.gov