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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, November 22, 2024 00:09:48

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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

Verification Tutorials

Forecast Verification Tutorials

These forecast verification tutorials were presented at the World Meterological Organization, World Weather Research Programme,
4th WMO INTERNATIONAL VERIFICATION METHODS WORKSHOP at Helsinki, Finland, 8 - 10 June 2009.

 Basic Verification Concepts

 Verification of Categorical Predictands

​ Verification of Continuous Predictands

​ Verification of Probability and Ensemble Forecasts

 Methods for Verifying Spatial Forecasts

 Statistical Inference

 Warning Verification