NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, December 18, 2020 00:32:22

Main menu

NOAA Scales

minimize icon
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
maximize icon
R
no data
S
no data
G
no data
Current Space Weather Conditions
on NOAA Scales
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

Geoelectric Field Model Response to SI 10 Dec, 2020
What is a CME?
NWS Winter Safety Campaign
Improved Aurora Forecasts at the Space Weather Prediction Center
Geoelectric Field Model Responses to Sudden Impulse on 10 Dec, 2020
Tuesday, December 15, 2020 17:07 UTC

Effects from the CME that departed the Sun on 7 December, 2020, arrived at Earth early on the 10 December, 2020, UTC-day.

What is a Coronal Mass Ejection (CME)?
Tuesday, December 08, 2020 21:24 UTC

Coronal Mass Ejections (CMEs) are large expulsions of plasma and magnetic field from the Sun’s corona.

NWS Winter Safety Campaign
Tuesday, December 01, 2020 22:56 UTC

Winter is approaching!

Improved Aurora Forecasts at the Space Weather Prediction Center
Monday, October 26, 2020 22:08 UTC

The Space Weather Prediction Center is pleased to announce the operational release of improved 30 minute auroral prediction maps beginning October

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

Estimated Planetary K-Index

Planetary K Index plot