The phrase "are significant enough that" is correct and usable in written English.
It can be used to indicate that something has a level of importance or impact that justifies a particular conclusion or action.
Example: "The results of the study are significant enough that they could change the current understanding of the disease."
Alternatives: "are important enough to" or "are substantial enough that".
The open questions about OPC's remove-at-the-source proposal are significant enough that I've listed them in a separate blog post, here.
Its lingering problems, including the questionable loyalties of the former rebels now in power and the competition between the Kremlin and the Chechen government for oil, are significant enough that the republic could slip into disorder again.
Still, he reported recently in Geophysical Research Papers, the effects of reservoir construction are significant enough that they will have to be taken into consideration in calculating long-term changes in global motion.
The amounts are significant enough that the United States Atomic Energy Commission, in the early 1950s when substantial domestic sources of high-grade uranium ore had not yet been located, seriously considered extracting uranium from coal ash for atomic bombs.
But the challenges facing NBC News – from management issues to ratings decline to low morale to the absence of Williams – are significant enough that the job ahead looks more like emergency response than legacy maintenance.
Underrepresented founders face greater challenges in convincing a fairly homogeneous industry that issues they are solving are significant enough, that the services they provide are widely needed and that they are the ones to take this vision into a multibillion dollar company.
This issue was significant enough that the team felt it warranted further investigation.
It was significant enough that it changed me from a medium-sized mezzo-soprano to a larger soprano voice, which meant a complete repertoire change.
