NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, April 24, 2024 03:00:58

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

M9 Flare (R2-Moderate) Event on 16 May, 2023

R2 Event on 16 May, 2023
M9 Flare (R2-Moderate) Event on 16 May, 2023
published: Thursday, May 18, 2023 16:19 UTC

A M9.6 flare (R2-Moderate HF Radio Blackout) occurred on 16 May at 12:43 pm EDT (1643 UTC). The flare erupted from a yet to be observed active region just beyond the southeast limb of the visible solar disk. However, the NSO - Gong (National Solar Observatory - Global Oscillation Network Group) helioseismology observation detected a noteworthy signature just about to rotate into Earth-view in another day or so. SWPC forecasters utilize this technology when available to assist in forecast decision-making. Continue to monitor our SWPC website for the latest information and forecasts.