NOAA / Space Weather Prediction Center

SWPC Space Weather Advisory

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

2017 August 27 at 9:37 p.m. MDT (2017 August 28 0337 UTC)


Summary For August 21-27

G1 (Minor) geomagnetic storm levels were observed on 22-23 August while G2 (Moderate) geomagnetic storm levels were observed on 22 August due to coronal hole high speed stream effects coupled with prolong periods of southward Bz.

Outlook For August 28-September 3

G1 (Minor) geomagnetic storm levels are likely on 31 August due to the arrival of a positive polarity coronal hole high speed stream.

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 or (303) 497-5127.

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