NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, June 16, 2025 12:19:38

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

G2 Watch issued for 4 August; G1 Watch issued for 5 August

G2 Watch issued for 4 August; G1 Watch issued for 5 August
G2 Watch issued for 4 August; G1 Watch issued for 5 August
published: Sunday, August 06, 2017 12:23 UTC

A coronal hole high speed stream, originating from a recurrent, positive polarity coronal hole seen in the SDO/AIA 193 image above, is likely to cause geomagnetic storming at the G2 level on 4 August 2017, and at the G1 level on 5 August. Stay tuned for additional updates.