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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, February 23, 2020 12:31:02

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NOAA Scales mini

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Space Weather Conditions
24-Hour Observed Maximums
R
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S
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G
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Latest Observed
R
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S
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G
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R
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S
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Current Space Weather Conditions
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

Solar Energetic Particles - WMO Product Portal

Three-day Proton Forecast

Proton forecast thumbnail
Product Description:
Daily probabilities of solar proton events over the next one,
two, and three days. A solar proton event is defined by the >10
MeV proton flux exceeding 10 particles/(cm2 s sr) at
geostationary orbit.


Target Users:
Product users include industries that rely on HF
Communication, particularly at high latitudes, the satellite
industry and activities sensitive to energetic particle
radiation at high altitudes and in space.
Three-day Proton Event Forecast
Cadence: Daily
Data Source: Solar Images, GOES X-Ray and Proton measurements


Current Proton Alerts

Proton alerts thumbnail
Product Description:

Timeline of currently active and recent energetic proton alerts.
Alerts are issued when observed proton flux levels at geostationary
orbit exceed predetermined thresholds.


Target Users:
Product users include industries that rely on HF Communication, the satellite
industry and activities sensitive to energetic particle radiation at
high altitudes and in space.
Current Proton Alerts
Cadence: As Issued
Data Source: GOES Proton measurements