The phrase "a considerable uncertainty" is correct and usable in written English.
It can be used when discussing situations or conditions where there is a significant lack of certainty or predictability.
Example: "The researchers faced a considerable uncertainty regarding the outcomes of their experiments due to the unpredictable variables involved."
Alternatives: "a significant uncertainty" or "a substantial uncertainty".
"There is a considerable uncertainty about the strength of the upturn," he said.
Another production of the Public Art Fund, it reflects a considerable uncertainty about who it wants its public to be.
If reading electronic books becomes popular -- a considerable uncertainty today -- a merger would create a company with enormous power over the future shape of the book business.
However, the total explanatory strength of the considered factors is moderate and a considerable uncertainty in the exact distribution remains.
Although there is a considerable uncertainty in the observed mass changes, the 3D-modelling approach allows a first approximation of the initial, mostly erosion-affected, surface structural dynamics of the artificial catchment.
In this framework, hydrogen will have the chance to play a major role but its penetration rate still represents a considerable uncertainty and needs to be investigated with special attention to show the real feasibility of a hydrogen economy advent.
Nate Cohn: "The new polls, the first to show Mr. Begich ahead in more than a month, add considerable uncertainty to a race in a state that has a history of inaccurate polling.
A spokesman said the report had been produced "against a backdrop of considerable uncertainty because no detailed financial information has been provided by the government beyond the last financial settlement, which set out what resources would be available to us for 2011-12 and 2012-13".
The case takes place during a period of considerable uncertainty in the global capital markets.
Members in branches will be facing a period of considerable uncertainty in the current harsh economic climate".
"The Bank of England has a plan to achieve our objectives and by doing so support growth, jobs and wages during a time of considerable uncertainty.
