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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, August 17, 2024 18:09:00

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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

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G3 - Strong Geomagnetic Storm Levels Observed
Weekend Forecast Outlook (15-18 Aug)
Solar Cycle 25 Likely Reached the Highest Sunspot Number in over 20 Years
GOES 500 MeV Proton Flux Observations Now Available
G3 - Strong Geomagnetic Storm Levels Observed
Saturday, August 17, 2024 18:05 UTC

G3 - Strong Geomagnetic Storm Levels were reached at 1746 UTC (1346 ET) on 17 Aug 2024 due to influence from the CME associated with the X flare th

Weekend Forecast Outlook (15-18 Aug) - G1 Watch on 18 Aug UTC-Day
Thursday, August 15, 2024 16:04 UTC

Another CME may reach Earth late on 17 August (EDT time zone) and a G1 (Minor) Watch is in effect.

Solar Cycle 25 Likely Reached the Highest Sunspot Number in over 20 Years
Friday, August 09, 2024 18:27 UTC

Solar Cycle 25 likely reached the highest sunspot number yet - a value of at least 299.

GOES 500 MeV Proton Flux Observations Now Available
Tuesday, August 06, 2024 15:41 UTC

The National Weather Service (NWS) Space Weather Prediction Center (SWPC) has deployed an update to the observed Geostationary Orbiting Environment

Serving Essential Space Weather Communities

The Sun (EUV)

Solar Ultraviolet Image

Coronal Mass Ejections

LASCO C3 Coronagraph Image

The Aurora

Aurora ovation plot

GOES X-Ray Flux

GOES Proton Flux
Updated Time:
NOAA Scales Geomagnetic Storms
Kp < 5 Kp = 5 (G1) Kp = 6 (G2) Kp = 7 (G3) Kp = 8, 9- (G4) Kp = 9o (G5)