NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, November 23, 2024 19:20:39

Main menu

NOAA Scales mini

minimize icon
Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
R
no data
S
no data
G
no data
Latest Observed
R
no data
S
no data
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
maximize icon
R
no data
S
no data
G
no data
Current Space Weather Conditions
on NOAA Scales
R1 (Minor) Radio Blackout Impacts
close
HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales

G1 (Minor) Watch issued for 12 January 2016

G1 (Minor) Watch issued for 12 January 2016
published: Wednesday, January 13, 2016 00:19 UTC

A G1 (Minor) geomagnetic storm watch has been issued for 12 January (UTC day) due to a recurrent, negative polarity, coronal hole high speed stream.  Whenever we have high speed solar wind stream features that have been observed consistently for several rotations, it is more likely that isolated minor geomagnetic activity will occur.  The image is a composite of several different wavelengths from NASA’s Solar Dynamics Observatory.  The outline indicates the coronal hole we are tracking.