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

SPACE WEATHER ADVISORY OUTLOOK #13-33
2013 August 18 at 8:43 p.m. MDT (2013 August 19 0243 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For August 12-18

R1 (Minor) radio blackouts were observed on 12 Aug and 17 Aug due to flare activity from active Regions 1817  and 1818 respectively.

G1 (Minor) geomagnetic storms were observed on 16 Aug due to effects from a coronal hole high speed stream (CH HSS).  

Outlook For August 19-25

A chance for R1 - R2 (Minor - Moderate) radio blackouts exists from 19 - 21 Aug due to possible continued flare activity from Region 1818.

A slight chance for a G1 (Minor) geomagnetic storm exists on 21 Aug due to a combination of CH HSS effects and possible effects from the 17 Aug coronal mass ejection. 

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

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