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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, August 18, 2025 23:35:06 UTC

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NOAA Scales

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Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
R
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S
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G
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Latest Observed
R
none
S
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Predicted 2025-08-18 UTC
R1-R2 5%
R3-R5 1%
S1 or greater 1%
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none
Predicted 2025-08-19 UTC
R1-R2 5%
R3-R5 1%
S1 or greater 1%
G1
minor
Predicted 2025-08-20 UTC
R1-R2 10%
R3-R5 1%
S1 or greater 1%
G1
minor
1
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PrevNext
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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: 350 km/sec
  • Solar Wind Magnetic Fields: Bt 10 nT, Bz 4 nT
  • Noon 10.7cm Radio Flux: 114 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

Visible Light images from GONG can be viewed on the Testbed website.

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

Created with Highcharts 8.0.4GOES Proton FluxAug 1612:00Aug 1712:00Aug 1812:00Aug 19
10-2100102104
Created with Highcharts 8.0.4GOES Electron FluxAug 1612:00Aug 1712:00Aug 1812:00Aug 19
10-2100102104106108
Created with Highcharts 8.0.4GOES MagnetometersAug 1612:00Aug 1712:00Aug 1812:00Aug 190200
Created with Highcharts 8.0.4Universal TimeEstimated KpAug 16Aug 17Aug 1812:0012:0012:00Aug 19010Space Weather Prediction Center
Updated Time: 2025-08-18T23:32:00.000Z

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