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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, February 23, 2020 11:59:44

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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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Latest Observed
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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 --
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R
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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 Activity - WMO Product Portal

Three-day X-Ray Forecast

X-Ray forecast plot thumbnail
Product Description:
Daily probabilities of X-class and M-class
flares over the next one, two, and three days.


Target Users:
Product users include industries that rely on HF Communication,
such as: emergency managers, aviation, and maritime
communication.
Three-day X-Ray Forecast
Cadence: Daily
Data Source: Solar images and GOES X-Rays


Three-day Proton Forecast

Proton forecast plot 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 X-Ray and Proton Alerts

x-ray/proton alerts thumbnail
Product Description:
Timeline of currently active and recent X-Ray and energetic proton alerts.
Alerts are issued when observed X-Ray and 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 X-Ray and Proton Alerts
Cadence: As Issued
Data Source: GOES X-Ray and Proton measurements