NOAA / Space Weather Prediction Center

SWPC Space Weather Advisory

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

SPACE WEATHER ADVISORY OUTLOOK #16-39
2016 September 25 at 7:09 p.m. MDT (2016 September 26 0109 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For September 19-25

G1 (Minor) geomagnetic storms were observed on 20 Sep and 25 Sep due to the influence of multiple coronal hole high speed streams.

No other space weather storms were observed during the summary period.

Outlook For September 26-October 2

G2 (Moderate) geomagnetic storms are likely on 28-30 Sep and G1 (Minor) storms are likely on 26 Sep and 01-02 Oct due to the anticipated influence of multiple coronal hole high speed streams.

No other space weather storms are expected during the outlook period.

For current space weather conditions see: Space Weather Now, Today's Space Weather and Space Weather Alerts


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. For more information, including email services, see SWPC's Space Weather Advisories Web site http://swpc.noaa.gov/advisories or (303) 497-5127.


NOAA Space Weather Scales - Description of catagories used in Outlooks.