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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, August 23, 2017 05:57:09

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NOAA Scales

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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
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R
no data
S
no data
G
no data
Current Space Weather Conditions
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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G2 Warning/Observed 22 Aug Aurora Forecast
2018 Space Weather Workshop Banner
Soalr Eclipse Safety
Geoelectric Field Model
Tuesday, August 22, 2017 04:00 UTC

A G2 (Moderate) geomagnetic storm Warning was issued, valid from 22/0255-0800 UTC (21/2255 - 22/0400 EDT).

Monday, August 21, 2017 13:16 UTC

The date and location for the 2018 Space Weather Workshop have now been determined by UCAR.  In 2018 we will be gathering from 16-20 April at the W

Friday, August 18, 2017 09:42 UTC

Are you ready for the total solar eclipse on Monday, August 21st, 2017?!  While the total eclipse will have no impact upon space weather

Tuesday, June 27, 2017 19:08 UTC

The NWS Director, Dr. Louis W. Uccellini, announced a new space weather model, the Geoelectric Field model, today.

Serving Essential Space Weather Communities

The Sun's X-Rays

Solar X-Ray Imager Image

Coronal Mass Ejections

LASCO C3 Coronagraph Image

The Aurora

Aurora ovation plot

GOES X-Ray Flux

GOES X-Ray flux plot

GOES Proton Flux

GOES Proton Flux plot

Estimated Planetary K-Index

Planetary K Index plot