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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, April 19, 2024 13:05:07

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NOAA Scales mini

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

G2 (moderate) Geomagnetic Storm Watch

a model depiction of a CME expected to arrive at Earth on 12 September
G2 (moderate) Geomagnetic Storm Watch
published: Thursday, September 11, 2014 05:47 UTC

A Forecast Watch for NOAA Scale G2 (moderate) Geomagnetic Storm conditions has been issued for 12 September, as the result of the coronal mass ejection associated with the M4 flare observed early on September 9th. The arrival of the plasma cloud at Earth’s magnetosphere is forecast for early on the 12th. G1 (minor) conditions are forecast to persist into 13 September. Displayed here is an ENLIL model depiction of the plasma cloud with a component flanking towards Earth.