NOAA SWPC Space WeatherOutlook #21-54 20 December 2021

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

SPACE WEATHER ADVISORY OUTLOOK #21-54
2021 December 19 at 7:41 p.m. MST (2021 December 20 0241 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For December 13-19

G1 (Minor) geomagnetic storms were observed on 19 Dec.

R1 (Minor) radio blackout conditions were observed on 17 Dec.

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

Outlook For December 20-26

G1 (Minor) geomagnetic storms are expected on 20 Dec.

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

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. More
information is available at SWPC’s Web site http://swpc.noaa.gov