Official Space Weather Advisory issued by NOAA Space Weather Prediction Center
Boulder, Colorado, USA
SPACE WEATHER ADVISORY OUTLOOK #15-21
2015 May 25 at 2:18 a.m. MDT (2015 May 25 0818 UTC)
**** SPACE WEATHER OUTLOOK ****
Summary For May 18-24
Category G1 (Minor) geomagnetic storming occurred on 18 May while category G2 (Moderate) geomagnetic storming occurred on 19 May due to coronal hole high speed stream effects.
Outlook For May 25-31
A chance for R1-R2 (Minor-Moderate) radio blackouts exists from 30-31 May due to the return of old Region 2339.
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