Which code represents patchy fog in weather reports?

The code that represents patchy fog in weather reports is MIFG. This designation specifically refers to "shallow fog," which is often synonymous with patchy fog and denotes areas where visibility can be significantly reduced in localized spots.

The other codes have distinct meanings: FG refers to fog more generally, without indicating it is patchy or shallow. BCFG indicates "borderline fog," which might suggest areas where fog is present, but not specifically patchy. SHRA denotes light rain showers and is unrelated to fog or visibility conditions. Understanding these definitions is crucial for accurate weather reporting and interpreting the conditions being described.