What does it mean when seasonal forecasts indicate “Climatology”, “CL”, or are blank in certain areas?
Frequently, large portions of the nation are not forecasted for at all by seasonal forecasts, such as NCEP-CPC (see graphic on right). They label this type of non-forecast as “Climatology” or “CL”, which reverts back to uncertain and equal chances of anything happening. Hence, the user is left with a proverbial “coin-flip” of possible outcomes. People often mistake these blank areas as a near normal forecast, whereas in actuality, it signifies that no forecast was made. Financial and business communities require a much more detailed and thorough approach, and should utilize Site-Specific Forecasting.
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