The Short-Term Proton Warning is a "high-confidence" notification of solar particle activity expected to reach the 10 pfu at greater than 10 MeV proton alert threshold.
NOAA / Space Weather Prediction Center
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The Short-Term Proton Warning is a "high-confidence" notification of solar particle activity expected to reach the 10 pfu at greater than 10 MeV proton alert threshold.
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Statistics Summary Table
Proton Warning Contingency Table and Statistics
Proton Warning Lead Time Plot