NOAA / Space Weather Prediction Center

SWPC Space Weather Advisory

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

2012 July 22 at 4:38 p.m. MDT (2012 July 22 2238 UTC)


Summary For July 16-22

Categories G1 (Minor) and G2 (Moderate) geomagnetic storms occurred on 16 July due to a coronal mass ejection. A category S1 (Minor) solar radiation storm was observed on 17-21 July, and reached S2 (Moderate) levels on 18 July, due to solar activity from active sunspot Region 1520. Categories R1 (Minor) and R2 (Moderate) radio blackouts were observed on 17 July and 19 July respectively, due to flare activity from active sunspot Region 1520.

Outlook For July 23-29

No space weather storms are expected.

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.