General Category > General Discussion

ALERT: X-Ray Flux exceeded M5


Space Weather Message Code: ALTXMF
Serial Number: 277
Issue Time: 2022 Mar 30 1735 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2022 Mar 30 1729 UTC
NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see


[0] Message Index

Go to full version