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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, May 11, 2024 03:51:13

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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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Yet Another X-class Flare!
Saturday, May 11, 2024 03:44 UTC

Yet another X-class flare has been observed. 

G5 Conditions Observed!
Friday, May 10, 2024 23:58 UTC

G5 Conditions were first observed at Earth at 6:54 p.m. EDT today.

Geomagnetic Storming Likely to Persist This Weekend
Friday, May 10, 2024 22:38 UTC

G4 (Severe) geomagnetic conditions have been observed today, and geomagnetic storming will persist through the weekend.

SWPC Issues Its First G4 Watch Since 2005
Thursday, May 09, 2024 20:38 UTC

On Thursday, May 9, 2024, the NOAA Space Weather Prediction Center issued a Severe (G4) Geomagnetic Storm Watch.

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)