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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, October 21, 2025 17:10:46

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NOAA Scales

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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
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R
no data
S
no data
G
no data
Current Space Weather Conditions
on NOAA Scales
R1 (Minor) Radio Blackout Impacts
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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

Space Weather Summary

  • Solar Wind Speed: km/sec
  • Solar Wind Magnetic Fields: Bt nT, Bz nT
  • Noon 10.7cm Radio Flux: sfu

Space Weather Enthusiasts Dashboard

Space Weather Overview

The latest space weather overview plot

Solar

GOES Solar Ultraviolet Imager

Solar Ultraviolet Image

Solar Visible Light

The latest Solar Visible Light image

LASCO C3

The latest LASCO C3 image

Solar Wind

ACE Mag and SWEPAM

The latest magnetic field and Solar Wind Electron Proton Alpha Monitor (SWEPAM) plot

WSA-Enlil Prediction

The latest WSA-Enlil solar wind prediction plot and animation

Geospace

Aurora Forecast

The latest Ovation aurora prediction plot and animation

3-Day Satellite Environment

Updated Time:

Ionosphere

Total Electron Content

Total Electron Content

D Region Absorption Prediction

The latest D Region global absorption prediction at 1 dB plot and animation

Solar Cycle

Sunspot Number Progression