NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, July 17, 2024 21:12:36

Main menu

NOAA Scales

minimize icon
Space Weather Conditions
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
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

Space Weather Summary

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

Slider

Forecast Highlight 15-18 July: R1-R2 Events Remain Likely
The Evolution and Impact of Active Region 13664
Wednesday, July 17, 2024 21:10 UTC

An abundance of sunspot groups are present on the visible solar disk and R1-R2 (Minor-Moderate) flares remain likely 15-18 July.

Wednesday, July 17, 2024 21:10 UTC

GOES-U, which will be renamed GOES-19 once in orbit, successfully launched from Florida on June 25.

Wednesday, July 17, 2024 21:09 UTC

SWPC is seeking information from interested parties regarding a possible revision to the Space Weather Scales (SWS).

Wednesday, July 17, 2024 21:09 UTC

Active Region 13664 was responsible for the largest geomagnetic storm of Solar Cycle 25, read the story from an operational perspective 

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)