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 #15-51
2015 December 20 at 9:30 p.m. MST (2015 December 21 0430 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For December 14-20

G2 (Moderate) geomagnetic storms were observed on 20 December.

G1 (Minor) geomagnetic storms were observed on 14, 15, and 20 December.

No Radio Blackouts were observed during the summary period.

No Solar Radiation storms were observed during the summary period.

Outlook For December 21-27

G1-G3 (Minor-Strong) geomagnetic storms are expected on 21 December

No Radio Blackouts are expected throughout the outlook period.

No Solar Radiation storms are expected throughout 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.