Official Space Weather Advisory issued by NOAA Space Weather Prediction Center

Boulder, Colorado, USA



SPACE WEATHER ADVISORY OUTLOOK #25-21

2025 June 22 at 6:52 p.m. MDT (2025 June 23 0052 UTC)



**** SPACE WEATHER OUTLOOK ****



Summary For June 16-22


-R3 (Strong) radio blackouts were observed on 17 and 19 Jun.

-An R2 (Moderate) event was observed on 16 Jun.

-R1 (Minor) events were observed on 16-17 and 20 Jun.

-No geomagnetic or solar radiation storms were observed this period.



Outlook For June 23-29



-There is a chance for R1-R2 (Minor-Moderate) events through 29 Jun.

-There is a slight chance for an R3 (Strong) or greater event through 29 Jun.

-Periods of G1 (Minor) geomagnetic storms are likely on 25-26 Jun due to +CH HSS influences.

-There is a slight chance for S1 (Minor) solar radiation storm conditions through 29 Jun.



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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