NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, April 21, 2025 18:20:27

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 (Moderate) Warning Issued: Valid to 31/1800 UTC

G2 Warning Auroral Forecast
G2 (Moderate) Warning Issued: Valid to 31/1800 UTC
published: Thursday, August 31, 2017 21:17 UTC

G2 (Moderate) geomagnetic storming warning is now in effect through 31/1800 UTC (31/1400 ET). The overall geomagnetic responses have escalated due to increased solar wind speed and  occasions of favorable orientation of the interplanetary magnetic field (IMF). Solar wind speeds currently range from 600 km/s to 700 km/s. The G1 (Minor) storm warning was extended until 31/2100 UTC (1700 ET) and G1 levels continue to be reached. Continue checking our SWPC website for the latest information, data, and updated forecasts/warnings/alerts.