NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, November 20, 2024 17:58:59

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

G3 (Strong) Geomagnetic Storm Conditions Observed on Feb 27

G3 (Strong) Geomagnetic Storm Conditions Observed on Feb 27
published: Wednesday, March 01, 2023 06:28 UTC

On Feb 26 SWPC issued a G3 (Strong) geomagnetic storm watch for Feb 27 in anticipation of the arrival of 2 coronal mass ejections (CMEs) from Feb 25 and 26, the latter of which was associated with a M6.2 flare from Active Region 2329. Wind speeds were already predicted to be elevated in response to a recurrent, coronal hole high speed stream. On Feb 26 at 12:33 pm EST, a sudden impulse was first observed at the DSCOVR satellite, indicating the imminent arrival of the CME(s). SWPC officially observed G3 (Strong) conditions across a global network of real-time magnetometers on Feb 27 at 1:00 am EST. G3 conditions are expected through most of the remainder of Feb 27. G2 (Moderate) conditions are likely for Feb 28 with ongoing storming.