NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, April 20, 2026 21:21:10

Main menu

NOAA Scales mini

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

News Archive

Previous SWPC news items.

DAP - temp Head Section

News Archive

sort ascending Originally Posted
Data Gap on 04 December Friday, December 4, 2015 - 17:49
Customer Needs & Requirements for Space Weather Customer Needs & Requirements for Space Weather Monday, September 30, 2019 - 18:41
CME Image from SOHO/LASCO Coronal Mass Ejections (CME) Space Weather Phenomena Tuesday, September 5, 2017 - 16:51
SOHO/LASCO-C3 coronagraph images of 28 Dec CME Coronal Mass Ejection on 28 December Monday, December 28, 2015 - 20:09
Coronal Mass Ejection From March 7th To Miss Earth Sunday, March 8, 2015 - 21:11

Pages