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National Oceanic and Atmospheric Administration

Tuesday, April 22, 2025 13:04:19

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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
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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
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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

G1 Watch for 5 & 6 August, 2019

G1 Watch 5-6 Aug, 2019
G1 Watch for 5 & 6 August, 2019
published: Wednesday, August 07, 2019 06:56 UTC

A G1 (Minor) geomagnetic watch remains in effect for 5 and 6 August, 2019 due to coronal hole high speed stream (CH HSS) influences. A co-rotating interaction region (CIR) arrived ahead of the CH HSS early on the 5 Aug UTC-day and increased total interplanetary magnetic field (IMF) strength. Elevated IMF strength, coupled with a periods of a southward directed Bz component; and solar wind speed increases to over 600 km/s, are expected to continue resulting in occasional periods of overall planetary geomagnetic responses to G1 levels.Therefore, the G1 Warning has been extended until 05/2359 UTC.