An interstellar phenomena forecast was a report which provided information on the movement and location of interstellar phenomena, such as passing pulsars.

In 2376, Federation space station Deep Space 9 predicted that a pulsar would pass close to the MIDAS array. By firing a tachyon beam at the pulsar, the Pathfinder Project was able to create a micro-wormhole through which they made contact with USS Voyager, thirty thousand light years away in the Delta Quadrant, for a brief period. (VOY: "Pathfinder")

Interestingly, this is the only mention of Deep Space 9 in a canon Star Trek production whose setting follows the final events of the series Star Trek: Deep Space Nine, as the episode "Pathfinder" is set in 2376 but DS9's fictional events conclude in 2375. The space station was mentioned one last time in a 2000 episode of Star Trek: Voyager, "Fury" but was referenced from the year 2371, which is the year in which the episode is partially set.
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