NOAA / Space Weather Prediction Center

SWPC Space Weather Advisory

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

2015 December 27 at 5:28 p.m. MST (2015 December 28 0028 UTC)


Summary For December 21-27

G1 (Minor) and G2 (Moderate) geomagnetic storms were observed on 21 December due to coronal mass ejection effects.

G1 (Minor) geomagnetic storms were observed on 26 December due to effects from a geoeffective coronal hole high speed stream (CH HSS).

R1 (Minor) radio blackouts were observed on 21-24 December due to flare activity from active Regions 2472 and 2473.

No Solar Radiation storms were observed during the summary period.

Outlook For December 28-January 3

G1 (Minor) geomagnetic storms are likely on 02 January due to effects from a geoeffective CH HSS.

R1 (Minor) radio blackouts are likely through 03 January, primarily from active Region 2473.

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 or (303) 497-5127.

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