Official Space Weather Advisory issued by NOAA Space Weather Prediction Center
Boulder, Colorado, USA
SPACE WEATHER ADVISORY OUTLOOK #26-19
2026 May 10 at 7:54 p.m. MDT (2026 May 11 0154 UTC)
**** SPACE WEATHER OUTLOOK ****
Summary For May 4-10
G2 (Moderate) geomagnetic storms were observed on 04 May due to coronal hole influence.
G1 (Minor) geomagnetic storms were observed on 05 May due to coronal hole influence.
R1 (Minor) radio blackouts were observed on 04 May and 07 May due to activity from Region 4424.
R2 (Moderate) radio blackouts were observed on 10 May due to activity from Region 4436.
No other space weather storms were observed during the summary period.
Outlook For May 11-17
G1 (Minor) geomagnetic storm levels are likely on 15-17 May due to influence from a coronal hole.
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
