Verification Tutorials

NOAA Scales mini

R1-R2	50%
R3-R5	10%

S1 or greater	10%

R1-R2	50%
R3-R5	10%

S1 or greater	10%

R1-R2	50%
R3-R5	10%

S1 or greater	10%

R1 (Minor) Radio Blackout Impacts

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

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