What does a TEMPO condition forecast signify for destination filing during an IFR flight?

A TEMPO condition forecast indicates that temporary weather conditions are expected to occur that may significantly impact flying operations, especially during an instrument flight rules (IFR) flight. Typically, TEMPO conditions denote temporary variations in weather that might bring about lower visibility or higher turbulence than would normally be expected in the forecast.

When it comes to filing for an IFR flight, these conditions can impact the minimum required weather for the destination airport. If a TEMPO forecast indicates that visibility will be low for certain periods, it may necessitate the requirement for an alternate airport, particularly if the primary airport's weather does not meet the alternate airport criteria set forth in regulations. As such, pilots are advised to consider these potential visibility issues when planning their flights and determining whether an alternate is needed, ensuring safety and compliance with IFR regulations.

The other options do not accurately reflect the implications of a TEMPO condition. While some may consider the forecast irrelevant, it plays an essential role in ensuring safe navigation—particularly in variable conditions. The misconception that visual approaches remain permitted under TEMPO conditions fails to recognize that the temporary restrictions could endanger IFR procedures that rely on certain visibility standards.