The annual event, which happens when Earth passes through debris from Halley's Comet, produces between 20 and 80 meteors every hour. At their most frequent, there should be about 20 to 25 meteors per hour.
"The Orionids are so named as they seem to originate, or radiate, from near the famous constellation Orion". This year's shower should be aided by the lack of harsh moonlight.
We'll still see mostly clear skies tonight along with mild temps and just a few thin clouds.
Tom Kerss, an astronomer at the Royal Observatory Greenwich, said: "The Orionids is a modest shower, producing around 20 meteors per hour at best under absolutely flawless conditions".
"Orionid meteors often leave longer trails than Perseid meteors, and have a more-pronounced bluish colour". Instead, as NASA notes, "It is actually better to view the Orionids from 45 to 90 degrees away from the radiant".More news: Father of Slain Soldier: Trump Didn't Send Promised $25K
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Over the years many people thought the arrival of Halley's Comet portended the end of the world.
For the best view, you'll want to be away from city lights.
The shower is active throughout October, but Kerss says the best time to see it will be on October 22 between midnight and dawn, when the sky is darkest and the shower will be at its brightest.
NASA advises meteor watchers to lie on their backs with their feet facing southeast (if you are in the Northern Hemisphere) and to give your eyes at least a half hour to adapt to the dark.
If you live in the northern hemisphere, look up to find Orion's club above the star Betelgeuse.